1. The container handling system tagged as CHS10

ADDENDUM NO. 1
TO THE CONSTRUCTION DOCUMENTS FOR
North Shore Water Reclamation District
Gurnee Water Reclamation Facility Bar Screen Replacement
& Pump Station (PS-5) Improvements
July 29, 2015
th
BID DATE: 11:00 AM August 5 , 2015
TO ALL BIDDERS: The above titled construction documents are hereby revised in accordance with the items
set forth herein.
This addendum to the construction documents is hereby made a part of the contract documents for the aboveentitled project, to the same extent as though it was originally contained herein. Bidders are required to
acknowledge receipt of all addenda immediately to the sender and as noted in the bid forms.
All bidders are expected to thoroughly examine each item enumerated herein, regardless of its apparent
application(s) and shall be held responsible for furnishing all labor and materials required in the division of work
that the items indicate. Items herein shall take precedence over any clauses, which they modify in the contract
documents or portions of the construction documents, which they modify or supplement.
A. Pre-bid Meeting Minutes:
1. A Pre-Bid Meeting was held at North Shore Water Reclamation District (NSWRD), Gurnee Water
Reclamation Facility Bar Screen Replacement & Pump Station (PS-5) Improvements project on July 23,
2015, 11:00 am at 14770 W Wm. Koepsel Drive, Gurnee, IL 60031. See Attached Pre-bid meeting
minutes in Appendix A.
2. Engineering Contacts:
a. Mark Hardie, Project Manager, HR Green
Office: 815-385-1778
Email: mhardie@hrgreen.com
B. General Clarifications:
1. The container handling system tagged as CHS10-01 in the plans and specified in section 46
2153 CONTAINER HANDLING SYSTEM is no longer included in the project. The Contractor
shall coordinate construction practices with the Owner to allow installation of the container
handling system by others. Affected specification sections and plan sheets have been
updated and attached to this Addendum #1.
2. The mechanical bar screen design is based on the existing 4’ wide channel. No modifications
to the channel width will be allowed.
3. Delete Sheet G-001, TITLE SHEET, and replace with the revised Sheet G-001 attached to this
Addendum #1. Changes are generally described as follows:
a. Sheet Index has been updated.
4. Delete Sheet C1-02, UTILITY LOCATION PLAN, and replace with the revised Sheet C1-02
attached to this Addendum #1. Changes are generally described as follows:
ADDENDUM NO. 1
Page 1
a. Two additional existing utilities are now included in the plan view and in the Conflict
Resolution Tags.
5. Delete Sheet P1-102, BLDG 10 INTERMEDIATE LEVEL IMPROVEMENTS PLAN, and
replace with the revised Sheet P1-102 attached to this Addendum #1. Changes are generally
described as follows:
a. The proposed concrete equipment pad indicated in keynote #18 shall be extended south to
the existing concrete curb.
b. Keynotes have been revised.
6. Delete Sheet P1-103, BLDG 10 MAIN LEVEL IMPROVEMENTS PLAN, and replace with the
revised Sheet P1-103 attached to this Addendum #1. Changes are generally described as
follows:
a. The container handling system tagged as CHS10-01 in the plans and specified in section
46 2153 CONTAINER HANDLING SYSTEM is no longer included in the project. The
Contractor shall coordinate construction practices with the Owner to allow installation of
the container handling system by others.
7. Delete Sheet and P1-104, BLDG 10 IMPROVEMENTS SECTION, and replace with the
revised Sheet P1-104 attached to this Addendum #1. Changes are generally described as
follows:
a. The container handling system tagged as CHS10-01 in the plans and specified in section
46 2153 CONTAINER HANDLING SYSTEM is no longer included in the project. The
Contractor shall coordinate construction practices with the Owner to allow installation of
the container handling system by others.
8. Delete Sheet P1-106, BLDG 10 CONTAINER HANDLING SYSTEM DETAILS. This sheet will
no longer be used in the project.
9. Delete Sheet E1-101, BLDG 10 ONE-LINE DIAGRAM, and replace with the revised Sheet E1101 attached to this Addendum #1. Changes are generally described as follows:
a. PLC I/O racks CCP1 & CCP2 adjusted.
b. Dumpster-Veyor (container handling system) removed from project scope.
10. Delete Sheet E1-103, BLDG 10 INTERMEDIATE LEVEL ELECTRICAL PLAN, and replace
with the revised Sheet E1-103 attached to this Addendum #1. Changes are generally
described as follows:
a. Revised location of proposed control panel.
b. Clarification of existing equipment. A tank shown in the background drawings is no longer
present.
11. Delete Sheet E1-104, BLDG 10 INTERMEDIATE LEVEL ELECTRICAL PLAN, and replace
with the revised Sheet E1-104 attached to this Addendum #1. Changes are generally
described as follows:
a. Keynotes revised.
b. Dumpster-Veyor (container handling system) removed from project scope.
12. Delete Sheet E1-105, BLDG 10 CIRCUIT SCHEDULE, and replace with the revised Sheet E1105 attached to this Addendum #1. Changes are generally described as follows:
a. Cable C115 added.
b. Multiple cable locations revised.
13. Delete Sheet IC1-101, BLDG 10 CONTROLS, and replace with the revised Sheet IC1-101
attached to this Addendum #1. Changes are generally described as follows:
a. Revised location of equipment.
14. Delete Specification Section 00100, NOTICE TO BIDDERS, and replace with the revised
Specification Section 00100 attached to this Addendum #1. Changes generally described as
follows:
a. Dumpster-Veyor (container handling system) removed from project scope.
ADDENDUM NO. 1
Page 2
15. Delete Specification Section 00400, BID FORM, and replace with the revised Specification
Section 00400 attached to this Addendum #1. Changes generally described as follows:
a. Dumpster-Veyor (container handling system) removed from project scope and Cordell
removed from the Major Equipment Schedule.
b. Whipps, Inc. added as B supplier for Fabricated Metal Slide Gates.
16. Delete Specification Section 00500, AGREEMENT, and replace with the revised Specification
Section 00500 attached to this Addendum #1. Changes generally described as follows:
a. Dumpster-Veyor (container handling system) removed from project scope.
17. Delete Specification Section 01 1000, SUMMARY OF WORK, and replace with the revised
Specification Section 01 1000 attached to this Addendum #1. Changes generally described as
follows:
a. Dumpster-Veyor (container handling system) removed from project scope. The Contractor
is instructed to coordinate construction practices with the Owner to allow installation of the
container handling system by others.
b. Contractor shall complete the proposed W3 installation connecting Building 230 to the
existing W3 line in Building 010 no later than 8 weeks after the Notice to Proceed.
18. Delete Specification Section 35 2016, FABRICATED METAL SLIDE GATES, and replace with
the revised Specification Section 35 2016 attached to this Addendum #1. Changes generally
described as follows:
a. Whipps, Inc. added as an acceptable manufacturer.
b. Paragraph 2.07 “Weir Gate” inserted.
c. Schedule updated to include revised gate dimensions. SLG10-01 is now listed as 66” x
96”.
19. Section 46 2151, 2.05.C.28 – Add Ethernet communications to Allen-Bradley Micrologix PLC.
20. Section 46 2152, 2.05.J. - Add Ethernet communications to Allen-Bradley Micrologix PLC.
21. Section 46 2151 and Section 46 2152 require the manufacturer to submit a Finite Element
Analysis certified by a Professional Engineer of the proposed equipment under loading.
22. All PLC’s shall be Allen-Bradley with Ethernet communication capability.
23. For each PLC supplied for this project, respective manufacturer shall provide PLC
programming (similar to Section 43 2100, Booster pumping system, 2.07.D Control System).
24. The NSWRD Process Automation Department will program the District’s existing PLC’s.
25. Sheet E1-105 - Add circuit C115 consisting of one Ethernet cable in ¾” conduit from Booster
Pump Control Panel to Screen /Compactor Control Panel.
26. Sheet E1-104 – There are three PLC panels on the main level of the pump room. The remote
I/O panel 010-RIO-1 is on the north wall. The PLC processor panel CCP1 is on the east wall.
The remote I/O panel CCP2 is also on the east wall, south of CCP1. Field verify exact
locations.
27. Sheet E1-105 - The New Screen/Compactor control panel circuit C111 shall be routed to PLC
panel CCP1.
28. Sheet IC1-101 – Wires that go to PLC addresses :042 thru :046 shall be routed to PLC panel
CCP2.
29. Sheet IC1-101 – Wires shown as TBD shall be routed to PLC panel #CCP1.
30. Sheet IC1-101 - Contractor shall supply NEW Allen-Bradly 1771 I/O modules for all PLC
addresses listed as “TBD”. The NSWRD Process Automation department will install the
modules. The Electrical Contractor shall supply terminal blocks as needed and wire to the
module wiring arms.
31. Section 26 0501 - Electrical contractor shall remove all wiring from demolished equipment.
32. Sheet E1-104 – There is no wall space for the location as shown for the new
Screen/Compactor control panel and the ISB3 and ISB4 devices. Relocate devices to empty
wall space on the west wall north of the MCC’s. Coordinate equipment location with NSWRD.
ADDENDUM NO. 1
Page 3
33. Section 46 2152, 2.05.A – Control Panel shall include HAND-OFF-AUTO function to allow
manual control of the bar screens from the operator interface unit.
C. Certification:
I hereby certify that this addendum was prepared by me or under my direct supervision and that I am a duly
Licensed Engineer under the laws of the state of Illinois.
Signature:_______
Date:
July 29, 2015
ADDENDUM NO. 1
_________
Typed or Printed Name: Mark Hardie
Reg. No.
062.063102
Page 4
ADDENDUM NO. 1
APPENDIX A
PRE-BID MEETING MINUTES
ADDENDUM NO. 1
Page 5
OFFICIAL NOTICE TO BIDDERS
NORTH SHORE WATER RECLAMATION DISTRICT
GURNEE WATER RECLAMATION FACILITY BAR SCREEN REPLACEMENT
& UPPER SKOKIE VALLEY PUMP STATION (PS-5) IMPROVEMENTS
GURNEE, ILLINOIS
OWNER AND WORK: The North Shore Water Reclamation District hereby gives notice that sealed Bids
will be received for Bar Screen Replacement and Pump Station (PS-5) Improvements at the Gurnee
Water Reclamation Facility and Upper Skokie Valley Pump Station. The work generally consists of the
furnishing and installation of two new screens, compactors, effluent reuse water main, and a booster
station at the Gurnee Water Reclamation Facility, two new gates at the Upper Skokie Valley Pump
Station (PS-5), and all associated electrical work to integrate screens, compactors, and booster station
into existing systems. Minor structural improvements are also included as shown on the plans.
TIME AND PLACE OF BID OPENING: Sealed Bids will be received until 11:00 a.m., Local Time on the
5th day of August, 2015, in the office of the North Shore Water Reclamation District, P.O. Box 750,
14770 W Wm. Koepsel Drive, Gurnee, Illinois 60031. After the official Bid closing time, the Bids will be
publicly opened and read aloud.
BIDDING DOCUMENTS: The Bidding Documents are on file for inspection at the office of the North
Shore Water Reclamation District, Gurnee, Illinois. Copies may be obtained by applying to North Shore
Water Reclamation District, P.O. Box 750, 14770 W Wm Koepsel Drive, Gurnee, Illinois 60031. Requests
shall include company name, street address for delivery of documents, name of contact person,
telephone number, and fax number with application.
A $75.00 payment for each set of Bidding Documents is required, of which $50.00 is a refundable deposit
and $25.00 is a nonrefundable handling charge for each set of Documents to be mailed. Full scale
drawings, not including the Project Manual, are available upon request for a separate nonrefundable
payment of $50.00 for each set. Make check or money order payable to North Shore Water Reclamation
District. Payment for the plans shall be mailed to North Shore Water Reclamation District – Attn: Director
of Engineering Services, P.O. Box 750, 14770 W Wm. Koepsel Drive, Gurnee, IL 60031.
Copies of the Bidding Documents may be secured in person at the North Shore Water Reclamation
District office, eliminating the handling charge. The refundable deposit will be returned to the apparent
low bidder and all other plan holders who return the documents in good condition within 60 days after the
opening of the bids. These are the only conditions under which the deposit will be returned.
All questions about the meaning or intent of the Bidding Documents are to be directed to the ENGINEER:
Attn: Mark Hardie, P.E.
mhardie@hrgreen.com
420 N. Front Street, Suite 100
McHenry, IL 60050
Phone: 815.385.1778
DRAWINGS OF EXISTING STRUCTURES: Drawings of physical conditions in or relating to existing
surface and subsurface structures used in preparing the Bidding Documents are on file at the North
Shore Water Reclamation District, P.O. Box 750, 14770 W Wm. Koepsel Drive, Gurnee, Illinois 60031,
and may be examined by contacting The Director of Engineering Services at 847-623-6060.
HR Green, Inc.
Project No. 91140077
OFFICIAL NOTICE TO BIDDERS
00100-1
LEGAL PROVISIONS: CONTRACTORS and Subcontractors shall conform to the “Substance Abuse
Prevention on Public Works Projects Act”, (820 ILCS 265/1 et seq.); and with the provisions of 29 CFR
Part 470.
WAGE RATES: This Contract calls for the construction of a “public work,” within the meaning of the
Illinois Prevailing Wage Act, 820 ILCS 130/.01 et seq. (“the Act”). The Act requires CONTRACTORS and
Subcontractors to pay laborers, workers and mechanics performing services on public works projects no
less than the “prevailing rate of wages” (hourly cash wages plus fringe benefits) in the county where the
work is performed. The prevailing rate of wages are revised by the Illinois Department of Labor and are
available on their official website at http://www.illinois.gov/idol/Laws-Rules/CONMED/Pages/Rates.aspx.
If the Illinois Department of Labor revises the prevailing rate of hourly wages to be paid, the revised rate
shall apply to this Contract. All CONTRACTORS and Subcontractors rendering services under this
Contract must comply with all requirements of the Act, including but not limited to, all wage, notice and
record keeping duties.
PRE-BID CONFERENCE: A pre-bid conference will be held prior to the Bid opening on the 23rd day of
July 2015, at 11:00 a.m. at the North Shore Water Reclamation District, Gurnee Water Reclamation
Facility, 14940 Wm. Koepsel Drive, to clarify questions from the potential bidders and review the existing
conditions.
BID SECURITY: Bid Security in the amount of not less than 5% of the Bid shall accompany each Bid in
accordance with the Instructions to Bidders.
CONTRACT SECURITY: The Bidder to whom a Contract is awarded shall furnish a Performance Bond
and a Payment Bond each in an amount equal to the Contract Price.
BID REJECTION/ACCEPTANCE: The OWNER reserves the right to reject any and all Bids, waive
informalities in bidding, or to accept the Bid or Bids, which best serves the interests of the OWNER.
BID WITHDRAWAL: No Bid shall be withdrawn for a period of 60 days after the scheduled opening of the
bids without the consent of OWNER.
Published by authority of the North Shore Water Reclamation District.
By:
BRIAN DORN, P.E., Executive Director
MARY JO BRYANT, Secretary
Dated: July 14, 2015
HR Green, Inc.
Project No. 91140077
OFFICIAL NOTICE TO BIDDERS
00100-2
BID FORM
PROJECT IDENTIFICATION:
North Shore Water Reclamation District
Gurnee Water Reclamation Facility Bar Screen Replacement & Pump Station (PS5) Improvements
Gurnee, Illinois
PROJECT NUMBER: 14A-08
THIS BID IS SUBMITTED TO:
North Shore Water Reclamation District
P.O. Box 750
14770 W. Wm. Koepsel Drive
Gurnee, Illinois 60031
(hereinafter called OWNER)
1.01
This Bid Form shall be used to submit a Bid for the Gurnee Water Reclamation Facility Bar
Screen Replacement & Pump Station (PS5) Improvements.
2.01
The undersigned Bidder proposes and agrees, if this Bid is accepted, to enter into an Agreement
with OWNER in the form included in the Bidding Documents to perform and furnish all Work as
specified or indicated in the Bidding Documents for the Bid Price and within the Bid Time
indicated in this Bid and in accordance with the other terms and conditions of the Bidding
Documents.
3.01
Bidder accepts all of the terms and conditions of the Official Notice to Bidders and Instructions to
Bidders, including without limitation those dealing with the disposition of Bid security. Bidder has
not added any conditions or qualifying statements to the Bid. This Bid will remain subject to
acceptance for 60 days after the day of Bid opening. Bidder will sign and deliver the required
number of counterparts of the Agreement with the Bonds, evidence of insurance coverage, and
other documents required by the Bidding Requirements within 10 days after the date of
OWNER’S Notice of Award.
4.01
In submitting this Bid, Bidder represents, as set forth in the Agreement, that:
A. Bidder has examined and carefully studied the Bidding Documents, the other related data
identified in the Bidding Documents, and the following Addenda, receipt of all which is hereby
acknowledged.
Addendum No.
Addendum Date
___________
____________
___________
____________
___________
____________
___________
____________
B. Bidder has visited the Site and become familiar with and is satisfied as to the general, local
and Site conditions that may affect cost, progress, performance, and furnishing of the Work.
HR Green, Inc.
91140077
BID FORM
00400-1
C. Bidder is familiar with and is satisfied as to all federal, state and local Laws and Regulations
that may affect cost, progress and performance of the Work.
D. Bidder has carefully studied all reports of explorations and test of subsurface conditions at or
contiguous to the Site and all drawings of physical conditions in or relating to existing surface
or subsurface structures at or contiguous to the site (except Underground Facilities) which
have been identified in the Supplementary Conditions as provided in paragraph 4.02 of the
General Conditions.
E. Bidder has obtained and carefully studied (or assumes responsibility for having done so)
additional or supplementary examinations, investigations, explorations, tests, studies and
data concerning conditions (surface, subsurface and Underground Facilities) at or contiguous
to the Site which may affect cost, progress, or performance of the Work or which relate to any
aspect of the means, methods, techniques, sequences, and procedures of construction to be
employed by Bidder, including applying the specific means, methods, techniques, sequences,
and procedures of construction expressly required by the Bidding Documents to be employed
by Bidder, and OSHA standard safety precautions and programs incident thereto.
F. Bidder does not consider that any further examinations, investigations, explorations, tests,
studies, or data are necessary for the determination of this Bid for performance of the Work at
the price(s) bid and within the times and in accordance with the other terms and conditions of
the Bidding Documents.
G. Bidder acknowledges that OWNER and ENGINEER does not assume responsibility for the
accuracy or completeness of information and data shown or indicated in the Bidding
Documents with respect to Underground Facilities at or contiguous to the site. Bidder has
obtained and carefully studied (or assumes responsibility for having done so) all such
examinations, investigation, explorations, tests, studies, and data concerning conditions
(surface, subsurface, and Underground Facilities) at or contiguous to the site or otherwise
which may affect costs, progress, performance or furnishing of the Work or which related to
any aspect of the means, methods, techniques, sequences, and procedures of construction
to be employed by Bidder and OSHA standard safety precautions and programs incident
thereto.
Bidder does not consider that any additional examinations, investigations,
explorations, tests, studies or data are necessary for the determination of this Bid for
performance and furnishing of the Work in accordance with the time, price, and other items
and conditions of the Bidding Documents.
H. Bidder is aware of the general nature of work to be performed by OWNER and others at the
Site that relates to the Work as indicated in the Bidding Documents.
I.
Bidder has correlated the information known to Bidder, information and observations obtained
from visits to the Site, reports and drawings identified in the Bidding Documents, and all
additional examinations, investigations, explorations, tests, studies and data with the Bidding
Documents.
J.
Bidder has given ENGINEER written notice of all conflicts, errors, ambiguities, or
discrepancies that Bidder has discovered in the Bidding Documents, and the written
resolution thereof by ENGINEER is acceptable to Bidder, and the Bidding Documents are
generally sufficient to indicate and convey understanding of all terms and conditions for the
performance of the Work for which this Bid is submitted.
K. This Bid is genuine and not made in the interest of or on behalf of any undisclosed person,
firm, or corporation and is not submitted in conformity with any agreement or rules of any
group, association, organization or corporation; Bidder has not directly or indirectly induced or
solicited any other Bidder to submit a false or sham bid; Bidder has not solicited or induced
any person, firm or corporation to refrain from bidding; and Bidder has not sought by collusion
to obtain for itself any advantage over any other Bidder or over OWNER.
L. Bidder is not barred from bidding on this contract as a result of a conviction for either bidrigging or bid-rotating under the provision contained in Chapter 38, Paragraphs 33E-3 and
33E-4 of the Illinois Revised Statutes.
HR Green, Inc.
BID FORM
Project No. 91140077
00400-2
5.01
The following schedule of Contract Lump Sum prices has been completed with a full and
complete knowledge of the Plans and Specifications for the Work and it is understood that each
item, when completed and in place, will be ready for use
Bidder will complete the Work in accordance with the Contract Documents for the following price:
LUMP SUM BID PRICE _________________________________________________________
____________________________________________________ ($______________________)
(use words)
(use figures)
Alternate: Include the following alternate as described in Section 01230:
Mechanical Bar Screen Type MS1 and Screwpactor by Headworks
Add or Deduct (Circle One)
____________________________________________________ ($______________________)
(use words)
(use figures)
6.01
Bidder shall complete Major Equipment Schedule in Bid Form Appendix 1. It is understood and
agreed by the undersigned that the Owner reserves the unrestricted privileged to reject any bid in
which all of the items in the Major Equipment Schedule are not properly filled out.
7.01 Bidder agrees that the Work will be substantially completed and completed and ready for final
payment in accordance with paragraph 14.07.B of the General Conditions on or before the dates or
within the number of calendar days indicated in the Agreement.
8.01 Bidder accepts the provisions of the Agreement as to liquidated damages in the event of failure to
complete the Work within the times specified above, which shall be stated in the Agreement.
9.01 The following documents are attached to and made a condition of this Bid:
A. Required Bid security in the form of _____________________________________________
(Certified Check or Bid Bond)
in the amount of ____________________________________________________________.
(Dollars or Percent of Lump Sum Bid Price)
10.01 The terms used in this Bid which are defined in the General Conditions of the Construction
Contract included as part of the Bidding Documents have the meanings assigned to them in the
General Conditions and terms defined in the Instructions to Bidders are used with the same
meaning in this Bid.
SUBMITTED ON ________________________________________, 20____.
I hereby certify that as Bidder I/we have examined and carefully prepared this Bid from the Bidding
Documents and have checked the same in detail before submitting this Bid, and that all statements herein
are made on behalf of:
An Individual
By (Written)
(Typed)
doing business as
(Individual's Name)
(Firm Name)
Business address:
HR Green, Inc.
91140077
BID FORM
00400-3
Phone No.:
A Partnership
By
(Firm Name)
By (Written)
(Typed)
(General Partner)
Business address:
Phone No.:
A Corporation
By
(Corporation Name)
(State of Incorporation)
By (Written)
(Typed)
(Title)
(Name of Person Authorized to Sign)
(Corporate Seal)
Attest (Written)
(Typed)
(Secretary)
Business address:
Phone No.:
A Joint Venture By
(Joint Venture Name)
(State of Incorporation if Appropriate)
By (Written)
(Typed)
(Name of Person Authorized to Sign)
Title:
Business Address:
Phone No.:
By
(Joint Venture Name)
(State of Incorporation if Appropriate)
By (Written)
(Typed)
BID FORM
00400-4
(Name of Person Authorized to Sign)
HR Green, Inc.
Project No. 91140077
Title:
Business Address:
Phone No.:
(Each joint venturer must sign. The manner of signing for each individual, partnership, and corporation
that is a party to the joint venture should be in the manner indicated above).
Sworn and subscribed to before me this
____ day of _______________, 20___
__________________________________________
Notary or other office authorized to administer oaths
My commission expires: ______________________
(Bidders shall not add any conditions or qualifying statements to this Bid as otherwise the Bid may be
declared irregular as being not responsive to the advertisement. BIDDERS SHALL USE THIS BID FORM
IN SUBMITTING THEIR BIDS.)
END OF BID FORM
HR Green, Inc.
91140077
BID FORM
00400-5
BID FORM APPENDIX 1
A. Base Bid Material and Equipment:
1. Bidder shall base their Lump Sum Contract Price on one of the listed Suppliers of material or
equipment and shall circle the item A, B, or C and write in the equipment cost and the total
installed cost included in their Bid. Should Bidder fail to indicate which Supplier is included in the
Lump Sum Contract Price, Bidder shall furnish Item A. Refer to Instructions to Bidders, Article 14,
for additional requirements and provisions.
2. The procedures for submission of substitutes and consideration by ENGINEER for determining
the acceptability of substitutes are set forth in the Instructions to Bidders, General Conditions and
Supplementary Conditions.
Major Equipment Schedule
Specification
Section
462151
432100
352016
Description of Item
Centerflow Screen and
compactor
Packaged Skid Mounted
Water Booster Pumping
System
Fabricated Metal Slide
Gates
Supplier
A. Hydrodyne
B. Ovivo
A. Dakota
Pump
B. Metropolitan
Industries,
Inc.
C. SynchroFlo
A. R.W. Gate
Company
B. Whipps, Inc.
Equipment
Cost
Total Installed
Cost(1)
(1) Total Installed Cost = Equipment Cost + Cost of Equipment Installation
BID FORM
00400-6
HR Green, Inc.
Project No. 91140077
AGREEMENT
THIS AGREEMENT is by and between ____________________________________________________
_____________________________________________________________(hereinafter called OWNER)
and ________________________________________________________________________________
_______________________________________________________(hereinafter called CONTRACTOR).
OWNER and CONTRACTOR, in consideration of the mutual covenants hereinafter set forth, agree as
follows:
ARTICLE 1 – WORK
1.01
CONTRACTOR shall complete all Work as specified or indicated in the Contract Documents.
The Work is generally described as follows:
The work generally consists of the furnishing and installation of two new screens, compactors,
effluent reuse water main, and a booster station at the Gurnee Water Reclamation Facility, two
new gates at the Upper Skokie Valley Pump Station (PS5), and all associated electrical work to
integrate screens, compactors, and booster station into existing systems. Minor structural
improvements are also included as shown on the plans.
ARTICLE 2 – THE PROJECT
2.01
The Project for which the Work under the Contract Documents may be the whole or only a part is
generally described as follows:
North Shore Water Reclamation District
Gurnee Water Reclamation Facility Bar Screen Replacement & Pump Station (PS5) Improvements
Gurnee, Illinois
ARTICLE 3 – ENGINEER
3.01
The Project has been designed by HR Green, Inc., who is hereinafter called ENGINEER and who
is to act as OWNER’S representative, assume all duties and responsibilities, and have the rights
and authority assigned to ENGINEER in the Contract Documents in connection with the
completion of the Work in accordance with the Contract Documents.
ARTICLE 4 – CONTRACT TIMES
4.01
Time of Essence
A. All time limits for Milestones, if any, Substantial Completion, and completion and readiness
for final payment as stated in the Contract Documents are of the essence of the Contract.
4.02
Days to Achieve Substantial Completion and Final Payment
HR Green, Inc.
Project No. 91140077
AGREEMENT
00500-1
A. All of the Work shall be substantially completed within 240 days after the date when the
Contract Times commence to run as provided in paragraph 2.03 of the General Conditions,
and completed and ready for final payment in accordance with paragraph 14.07 of the
General Conditions within 300 days after the date when the Contract Times commence to
run.
4.03
Liquidated Damages
A. CONTRACTOR and OWNER recognize that time is of the essence of this Agreement and
that OWNER will suffer financial loss if the Work is not completed within the times specified in
paragraph 4.02 above, plus any extensions thereof allowed in accordance with Article 12 of
the General Conditions. The parties also recognize the delays, expense, and difficulties
involved in proving in a legal or arbitration proceeding the actual loss suffered by OWNER if
the Work is not completed on time. Accordingly, instead of requiring any such proof,
OWNER and CONTRACTOR agree that as liquidated damages for delay (but not as a
penalty), CONTRACTOR shall pay OWNER $500.00 for each day that expires after the time
specified in paragraph 4.02 for Substantial Completion, plus additional engineering costs
as set forth in paragraph SC-14.10 of the Supplementary Conditions, until the Work is
substantially complete. After Substantial Completion, if CONTRACTOR shall neglect, refuse,
or fail to complete the remaining Work within the Contract Time or any proper extension
thereof granted by OWNER, CONTRACTOR shall pay OWNER $200.00 for each day that
expires after the time specified in paragraph 4.02 for completion and readiness for final
payment, plus additional engineering costs as set forth in paragraph SC-14.10 of the
Supplementary Conditions, until the Work is completed and ready for final payment.
4.04
Permitting CONTRACTOR or Surety to continue and finish the Work or any part of the Work after
the times specified for completion, or after the date to which the times for completion may have
been extended, shall in no way operate as a waiver on the part of OWNER of its rights under the
Contract.
ARTICLE 5 – CONTRACT PRICE
5.01
OWNER shall pay CONTRACTOR for completion of the Work in accordance with the Contract
Documents an amount in current funds as follows:
________________________________________________________ ($ __________________)
(use words)
(figures)
ARTICLE 6 – PAYMENT PROCEDURES
6.01
Submittal and Processing of Payments
A. CONTRACTOR shall submit Applications for Payment in accordance with Article 14 of the
General Conditions. Applications for Payment will be processed by ENGINEER as provided
in the General Conditions.
6.02
Progress Payments; Retainage
A. OWNER shall make progress payments on account of the Contract Price on the basis of
CONTRACTOR’S Applications for Payment as recommended by ENGINEER each month
during performance of the Work as provided below. All such payments will be measured by
the schedule of values established in paragraph 2.07.A of the General Conditions or, in the
event there is no schedule of values, as provided in the General Requirements.
B. Progress payments will be made in an amount equal to the percentage indicated below but,
in each case, less the aggregate of payments previously made and less such amounts as
AGREEMENT
00500-2
HR Green, Inc.
Project No. 91140077
ENGINEER may determine or Owner may withhold, in accordance with paragraph 14.02 of
the General Conditions:
1. 90% of Work completed (with the balance being retainage). If the Work has been
50% completed as determined by ENGINEER, and if the character and progress of
the Work have been satisfactory to OWNER and recommendation of the ENGINEER
may determine that as long as the character and progress of the Work remain
satisfactory to them, there will be no retainage on account of Work subsequently
completed, in which case the remaining progress payments will be in an amount
equal to 100% of the Work completed less the aggregate of previous retainage and
payments previously made. At 50% completion, or any time thereafter, when the
character and progress of the Work is not satisfactory, additional amounts may be
retained, but in no event shall the total retainage be more than 10% of the value of
the Work completed.
6.03
Final Payment
A. Upon final completion and acceptance of the Work in accordance with paragraph 14.07 of the
General Conditions, OWNER shall pay the remainder of the Contract Price as recommended
by ENGINEER as provided in said paragraph 14.07.
ARTICLE 7 – CONTRACTOR’S REPRESENTATIONS
7.01
In order to induce OWNER to enter into this Agreement CONTRACTOR makes the following
representations:
A. CONTRACTOR has examined and carefully studied the Contract Documents (including the
Addenda listed in Article 8) and the other related data identified in the Bidding Documents
including “technical data”.
B. CONTACTOR has visited the Site and become familiar with and is satisfied as to the general,
local and Site conditions that may affect cost, progress, performance, and furnishing of the
Work.
C. CONTRACTOR is familiar with and is satisfied as to all federal, state and local Laws and
Regulations that may affect cost, progress and performance of the Work.
D. CONTRACTOR has carefully studied all reports of explorations and test of subsurface
conditions at or contiguous to the Site and all drawings of physical conditions in or relating to
existing surface or subsurface structures at or contiguous to the site (except Underground
Facilities) which have been identified in the Supplementary Conditions as provided in
paragraph 4.02 of the General Conditions.
E. CONTRACTOR has obtained and carefully studied (or assumes responsibility for having
done so) additional or supplementary examinations, investigations, explorations, tests,
studies and data concerning conditions (surface, subsurface and Underground Facilities) at
or contiguous to the Site which may affect cost, progress, or performance of the Work or
which relate to any aspect of the means, methods, techniques, sequences, and procedures
of construction to be employed by CONTRACTOR, including applying the specific means,
methods, techniques, sequences, and procedures of construction expressly required by the
Contract Documents to be employed by CONTRACTOR, and OSHA standard safety
precautions and programs incident thereto.
F. CONTRACTOR does not consider that any further examinations, investigations, explorations,
tests, studies, or data are necessary for performance of the Work at the contract price and
HR Green, Inc.
Project No. 91140077
AGREEMENT
00500-3
within the contract times and in accordance with the other terms and conditions of the
Contract Documents.
G. CONTRACTOR acknowledges that OWNER and ENGINEER do not assume responsibility
for the accuracy or completeness of information and data shown or indicted in the Contract
Documents with respect to Underground Facilities at or contiguous to the site.
CONTRACTOR has obtained and carefully studied (or assumes responsibility for having
done so) all such examinations, investigation, explorations, tests, studies, and data
concerning conditions (surface, subsurface, and Underground Facilities) at or contiguous to
the site or otherwise which may affect costs, progress, performance or furnishing of the Work
or which related to any aspect of the means, methods, techniques, sequences, and
procedures of construction to be employed by CONTRACTOR and OSHA standard safety
precautions and programs incident thereto. CONTRACTOR does not consider that any
additional examinations, investigations, explorations, tests, studies or data are necessary for
the performance and furnishing of the Work in accordance with the time, price, and other
items and conditions of the Contract Documents.
H. CONTRACTOR is aware of the general nature of work to be performed by OWNER and
others at the Site that relates to the Work as indicated in the Contract Documents.
I.
CONTRACTOR has correlated the information known to CONTRACTOR, information and
observations obtained from visits to the Site, reports and drawings identified in the Contract
Documents, and all additional examinations, investigations, explorations, tests, studies and
data with the Contract Documents.
J.
CONTRACTOR has given ENGINEER written notice of all conflicts, errors, ambiguities, or
discrepancies that CONTRACTOR has discovered in the Contract Documents, and the
written resolution thereof by ENGINEER is acceptable to CONTACTOR, and the Contract
Documents are generally sufficient to indicate and convey understanding of all terms and
conditions for the performance of the Work.
K. CONTRACTOR certifies that CONTRACTOR was not barred from bidding on this contract as
a result of a conviction for either bid-rigging or bid-rotating under the provision contained in
720 ILCS 5/33 E-11 of the Illinois Revised Statutes.
ARTICLE 8 – CONTRACT DOCUMENTS
8.01
Contents
A. The Contract Documents consist of the following:
1. Instructions to Bidders, inclusive;
2. Wage Rates, inclusive;
3. Contractor’s Bid Form, inclusive;
4. This Agreement, inclusive;
5. Notice of Award
6. Performance Bond or Contract Security Specified in lieu of Performance Bond;
7. Payment Bond, inclusive;
8. General Conditions, inclusive;
AGREEMENT
00500-4
HR Green, Inc.
Project No. 91140077
9. Supplementary Conditions, inclusive;
10. Specifications as listed in the table of contents of the Project Manual;
11. Drawings, not attached hereto, inclusive, with each sheet bearing the following
general title: Gurnee Water Reclamation Facility Bar Screen Replacement & Pump
Station (PS-5) Improvements, North Shore Water Reclamation District, Gurnee,
Illinois;
12. Addenda (numbers [__] to [__], inclusive);
13. Exhibits to this Agreement (enumerated as follows):
a. Exhibit A: “Major Equipment Schedule” as completed in CONTRACTOR’S
Bid, Bid Form Appendix 1;]
14 Documents in the Appendix;
The following which may be delivered or issued on or after the Effective Date of the
Agreement and are not attached hereto:
a. Notice to Proceed;
b. Written Amendments;
c.
Work Change Directives;
d. Change Order(s);
e. Field Order(s);
f.
ENGINEER’S Written Interpretations and Clarifications
B. The documents listed in Paragraph 8.01.A. are attached to this Agreement (except as
expressly noted otherwise above).
C. There are no Contract Documents other than those listed above in this Article 8.
D. The Contract Documents may only be amended, modified, or supplemented as provided in
paragraph 3.04 of the General Conditions.
ARTICLE 9 – MISCELLANEOUS
9.01
Terms
A. Terms used in this Agreement will have the meanings indicated in the General Conditions.
9.02
Assignment of Contract
A. No assignment by a party hereto of any rights under or interests in the Contract will be
binding on another party hereto without the written consent of the party sought to be bound;
and, specifically but without limitation, moneys that may become due and moneys that are
due may not be assigned without such consent (except to the extent that the effect of this
restriction may be limited by law), and unless specifically stated to the contrary in any written
HR Green, Inc.
Project No. 91140077
AGREEMENT
00500-5
consent to an assignment, no assignment will release or discharge the assignor from any
duty or responsibility under the Contract Documents.
9.03
Successors and Assigns
A. OWNER and CONTRACTOR each binds itself, its partners, successors, assigns, and legal
representatives to the other party hereto, its partners, successors, assigns, and legal
representatives in respect to all covenants, agreements, and obligations contained in the
Contract Documents.
9.04
Severability
A. Any provision or part of the Contract Documents held to be void or unenforceable under any
Law or Regulation shall be deemed stricken, and all remaining provisions shall continue to be
valid and binding upon OWNER and CONTRACTOR, who agree that the Contract
Documents shall be reformed to replace such stricken provision or part thereof with a valid
and enforceable provision that comes as close as possible to expressing the intention of the
stricken provision.
9.05
Other Provisions
Equal Employment Opportunity Clause:
A. In the event of CONTRACTOR’S and/or vendor’s noncompliance with any provision of this
Equal Employment Opportunity Clause, the Illinois Fair Employment Practices Act or the Fair
Employment Practices Commission’s Rules and Regulations for Public Contracts, the
CONTRACTOR and/or vendor may be declared nonresponsible and therefore ineligible for
future contracts or subcontracts with the State of Illinois or any of its political subdivisions or
municipal corporations, and the Contract may be canceled or voided in whole or in part, and
such other sanctions or penalties may be imposed or remedies invoked as provided by
statute or regulations.
During the performance of this Contract, CONTRACTOR and/or vendor agrees as follows:
1) That it will not discriminate against any employee or applicant for employment because of
race, color, religion, sex, national origin or ancestry; and further that it will examine all job
classifications to determine if minority persons or women are underutilized and will take
appropriate affirmative action to rectify any such underutilization.
2) That, if it hires additional employees in order to perform this Contract, or any portion
hereof, it will determine the availability (in accordance with the Commission’s Rules and
Regulations for Public Contracts) of minorities and women in the area(s) from which it
may reasonably recruit and it will hire for each job classification for which employees are
hired in such a way that minorities and women are not underutilized.
3) That, in all solicitations or advertisements for employees placed by it or on its behalf, it
will state that all applicants will be afforded equal opportunity without discrimination
because of race, color, religion, sex, national origin, ancestry, age, marital status,
physical or mental handicap unrelated to ability, or an unfavorable discharge from military
service.
4) That it will send to each labor organization or representative of workers with which it has
or is bound by a collective bargaining or other agreement or understanding, a notice
advising such labor organization or representative of the CONTRACTOR’S obligations
under the Illinois Fair Employment Practices Act and the Commission’s Rules and
Regulations for Public Contracts. If any such labor organization or representative fails or
AGREEMENT
00500-6
HR Green, Inc.
Project No. 91140077
refuses to cooperate with CONTRACTOR in its efforts to comply with such Act and Rules
and Regulations, CONTRACTOR will promptly so notify the Illinois Fair Employment
Practices Commission and the contracting agency and will recruit employees from other
sources when necessary to fulfill its obligations thereunder.
5) That it will submit reports as required by the Illinois Fair Employment Practices
Commission’s Rules and Regulations for Public Contracts, furnish all relevant information
as may from time to time be requested by the Commission or the contracting agency, and
in all respects comply with the Illinois Fair Employment Practices Act and the
Commission’s Rules and Regulations for Public Contracts.
6) That it will permit access to all relevant books, records, accounts and work sites by
personnel of the contracting agency and the Illinois Fair Employment Practices
Commission for purposes of investigation to ascertain compliance with the Illinois Fair
Employment Practices Act and the Commission’s Rules and Regulations for Public
Contracts.
7) That it will include verbatim or by reference the provisions of Paragraphs 1 through 7 of
this clause in every performance subcontract as defined in Section 2.10(b) of the
Commission’s Rules and Regulations for Public Contracts so that such provisions will be
binding upon every such subcontractor, and that it will also so include the provisions of
Paragraphs 1, 5, 6, and 7 in every supply subcontract as defined in Section 2.10(a) of the
Commission’s Rules and Regulations for Public Contracts so that such provisions will be
binding upon every such subcontractor. In the same manner as with other provisions of
this Contract, CONTRACTOR will be liable for compliance with applicable provisions of
this clause by all its subcontractors; and further it will promptly notify the contracting
agency and the Illinois Fair Employment Practices Commission in the event any
subcontractor fails or refuses to comply therewith. In addition, no CONTRACTOR will
utilize any subcontractor declared by the Commission to be nonresponsible and therefore
ineligible for Contracts or subcontracts with the State of Illinois or any of its political
subdivision or municipal corporations.
Substance Abuse Prevention on Public Works Projects Act:
A. CONTRACTOR shall comply with the provisions of the Substance Abuse Prevention on
Public Works Projects Act, 820 ILCS 265 et seq. CONTRACTOR hereby certifies that it
has in place a written Substance Abuse Prevention Program that meets or exceeds the
requirements of the Act, or has a collective bargaining agreement in effect dealing with
the subject matter of the Act. CONTRACTOR and subcontractors shall file a copy of the
Substance Abuse Prevention Program, or collective bargaining agreement, with OWNER
prior to the commencement of work on the Contract.
Executive Order 13201 Compliance:
A. CONTRACTOR agrees to comply with the provisions of 29 CFR Part 470 – Obligations of
Federal Contractors and Subcontractors; Notice of Employee Rights Concerning
Payment of Union Dues or Fees.
IN WITNESS WHEREOF, OWNER and CONTRACTOR have signed this Agreement in triplicate. One
counterpart each has been delivered to OWNER, CONTRACTOR, and ENGINEER. All portions of the
Contract Documents have been signed or identified by OWNER and CONTRACTOR.
HR Green, Inc.
Project No. 91140077
AGREEMENT
00500-7
This Agreement will be effective on ___________, ______(which is the Effective Date of the Agreement).
Attest:
_______________________________________
(CONTRACTOR)
_______________________________________
(Signature)
Address for giving notices:
_______________________________________
(Signature)
_______________________________________
(Typed Name and Title)
_______________________________________
_______________________________________
_______________________________________
(If CONTRACTOR is a corporation, attach
evidence of authority to sign.)
CONTRACTOR’S License No. ______________
(If required by state or municipal law)
Attest:
_______________________________________
(OWNER)
_______________________________________
(Signature)
_______________________________________
Address for giving notices:
_______________________________________
(Signature)
(Typed Name and Title)
_______________________________________
_______________________________________
(If OWNER is a public body, attach evidence of
authority to sign and resolution or other
documents authorizing execution of Agreement.)
_______________________________________
Approved as to form and execution this ________ day of ________________, 20____.
_______________________________________
(Attorney for OWNER)
AGREEMENT
00500-8
HR Green, Inc.
Project No. 91140077
HR Green Company
Project No. 91140077
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
SECTION 01 1000
SUMMARY OF WORK
PART 1 GENERAL
1.01
PROJECT INFORMATION
A. Project Name: Gurnee Water Reclamation Facility Bar Screen Replacement and Pump Station
(PS5) Improvements
B. Owner’s Name: North Shore Water Reclamation District
1. Address: P.O. Box 750, 14770 W Wm. Koepsel Drive, Gurnee, IL 60031
2. Telephone: 847-623-6060
C. Engineer’s Name: HR Green, Inc.
1. Address: 420 N. Front Street, Suite 100, McHenry IL 60050
2. Phone: 815-385-1778
3. Fax: 815-385-1781
1.02
SUMMARY
A. Work on this Contract consists of: The work generally consists of the furnishing and
installation of two new screens, compactors, effluent reuse water main, and a booster station
at the Gurnee Water Reclamation Facility, two new gates at the Upper Skokie Valley Pump
Station (PS5), and all associated electrical work to integrate screens, compactors, and
booster station into existing systems. Minor structural improvements are also included as
shown on the plans.
1.03
FORM OF SPECIFICATIONS
A. Some Work described in these Specifications use systems approach to identify systems of
structure or facility.
B. System components are either specified in system specification or by reference to another
section.
C. Term “provide” or “provided” shall mean “furnish and install in-place”
1.04
CONTRACTS
A. Perform Work under single lump sum Contract with OWNER.
1.05
WORK BY OTHERS
A. On-going and concurrent Work by Others
1. Not applicable
1.06
WORK SEQUENCE
A. Construct Work in stages to accommodate Owner's occupancy and operational requirements
during the construction period. Coordinate construction schedule and operations with Owner.
B. Construct Work in stages to [accommodate Owner's occupancy and operational requirements]
during the construction period. Coordinate construction schedule and operations with Owner.
The following sequence should generally be followed:
1. Install new slide gate between channels in screening building as shown on the plans.
SLG10-01 shall not be used for channel isolation during construction. Existing stop plates
immediately downstream (east) of the existing screens shall be used for isolation of individual
channels during construction.
SUMMARY OF WORK
01 1000 - 1
HR Green Company
Project No. 91140077
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
2. Only one screen channel may be out of service at a time. The following tasks must be
completed to provide one fully operational system for screen MFS10-02 in the south channel
before interrupting use of the north channel:
a. The Contractor shall complete new 6" W3 piping connecting the main building (Bldg
230) to the screening building (Bldg 010) no later than 8 weeks after the Notice to
Proceed. This includes both exterior and interior work. Existing W3 pipe to remain in
use throughout construction except for a temporary shutdown no longer than one
day.
b. Install booster pump skid and provide working W3 connection for MFS10-02, WC1001, and WC10-02.
c. Others shall install CHS10-01 in screening building as shown on plans. Contractor
shall provide temporary access to screenings room for existing dumpster loading
and unloading during construction until MFS10-02 is operational.
d. Install Sluice in screening building as shown on plans. To allow access to existing
dumpster at existing north screen unit the Sluice leading from screens to
washer/compactors shall initially connect only to MFS10-02 after installation.
e. Install proposed mechanical screen MFS10-02 and washer/compactors WC10-01
and WC10-02 in screening building as shown on the plans.
f. Manufacturer to provide startup services for MFS10-02 and washer/compactors after
installation of completed system. Engineer will determine when MFS10-02 is fully
operational.
3. Screen MFS10-01 shall be installed after MFS10-02 is operational. Sluice shall be
completed to provide connection to MFS10-01.
4. Install new manual slide gates as shown on the plans in Pump Station 5. Only one channel
may be out of service at a time. The first gate must be installed and operational before the
second channel is taken out of service.
C. All portions of work under the proposed Contract Documents shall be completed and ready for
operation on or before the date set forth in the Agreement. Provisions for liquidated damages are
set forth in the Agreement.
D. The Contractor shall schedule Work so that interruption of existing utilities, including but not
limited to: electric, telephone, communication, cable, gas, water, and sewer service will be at a
minimum. When it is necessary to interrupt services, the Contractor shall notify the Owner's
representative, Engineer, and appropriate utility companies twenty-four (24) hours in advance of
the interruption.
E. Prior to starting the construction, confer with the Engineer and Owner's representative and
develop a detailed, approved construction schedule which will permit the facilities to function as
normally as practical during the construction period. Do not make connections between existing
piping and new piping until necessary inspection and tests have been completed on the new work
and it is found to conform in all respects to the requirements of the drawings and specifications.
F. Special notes detailing critical portions of the work involving removal, replacement, tie-in,
changeover, etc. have been included in the drawings and the Work Sequence of this Section.
These notes describe the work, timing, scheduling, and coordination with the Owner and
Engineer necessary to complete the work. The detailed construction schedule shall be
developed by the Contractor with consideration of these details and the overall progress of the
work. The Engineer and Owner shall have full authority to review this schedule in order to protect
the operation of the existing facilities during construction.
G. The Contractor is responsible to daily clean the manual bar rack and carry the screenings to the
top floor during the entire period (including weekends and legal holidays) between the existing
mechanical bar screen removal and the new bar screen start-up and operation. The screenings
shall be disposed to the existing compactor, which shall be available for service at all times
required to dispose the manually removed screenings.
1.07
CONTRACTOR’S USE OF PREMISES
SUMMARY OF WORK
01 1000 - 2
HR Green Company
Project No. 91140077
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
A. Conduct operations to ensure least inconvenience to OWNER and operation of existing facility.
Cooperate with OWNER during construction operations to minimize conflict and to facilitate
OWNER’S operations.
B. If CONTRACTOR removes a portion of the fence to complete Work, the fence shall be restored at
all times when no work is being done in the area; and existing fence shall be restored at
completion of the work in accordance with the requirements of the Contract Documents.
C. When keys to locked areas are needed to provide access to areas to perform Work, obtain from
OWNER. Return keys at end of work day.
D. Employees of CONTRACTOR and Subcontractors involved in Work shall carry a federally or
state issued photo ID at all times when working in OWNER’S facilities. Any of CONTRACTOR
and Subcontractor’s employees found on site without a proper photo ID shall be immediately
removed by CONTRACTOR from the site.
E. Provide OWNER with a list of all CONTRACTOR and Subcontractor employees working in
OWNER’S facilities. The list shall include the following information for each person: name,
employer, trade, job description, and length of prior experience with current employer.
F. Conduct staging and parking areas as designated on Drawings and by OWNER. CONTRACTOR
shall be responsible to coordinate staging and parking areas for its subcontractors and vendors.
G. Obtain and pay for use of additional storage or Work areas needed for operations at no additional
cost to OWNER.
1.08
WORKING HOURS
A. Comply with requirements of General Conditions.
B. No Work shall be done between 6:00 p.m. and 7:00 a.m., nor on Saturdays, Sundays or legal
holidays without written permission of OWNER. Emergency work may be done without prior
permission.
C. Such permission may be revoked at any time by OWNER if CONTRACTOR fails to maintain
adequate equipment and supervision for proper prosecution and control of Work. Revocation
shall not entitle CONTRACTOR to change in Contract Price or Contract Time.
1.09
OWNER OCCUPANCY OF PREMISES
A. OWNER will occupy site and existing facilities during entire construction period for conduct of
normal operations.
B. OWNER reserves right to partially occupy and to place and install equipment in completed areas
of facilities, prior to Substantial Completion, provided that such occupancy does not interfere with
completion of Work. Such placing of equipment and partial occupancy shall not constitute
acceptance of the Work.
C. Prior to partial OWNER occupancy, mechanical and electrical systems shall be fully operational.
Require inspections and tests shall have been successfully completed. Upon partial occupancy.
OWNER will provide operation and maintenance of mechanical and electrical systems in
occupied portions of the facility.
PART 2 – PRODUCTS
(Not Used)
PART 3 – EXECUTION
(Not Used)
END OF SECTION
SUMMARY OF WORK
01 1000 - 3
HR Green, Inc.
Project No. 91140077
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
SECTION 35 2016
FABRICATED METAL SLIDE GATES
PART 1 GENERAL
1.01 SECTION INCLUDES
A.
Slide gates and gate actuators. Slide gates shall be furnished complete with stainless steel
frames, slides, seals on all sides, actuators, operating stems, anchor bolts, and appurtenances.
B.
Sluice gates and gate actuators. Sluice gates shall be furnished complete with stainless steel
frames, slides, seals on three sides, actuators, operating stems, anchor bolts, and
appurtenances.
C.
Stop plates. Stop plates shall be furnished complete with stainless steel plate, handle for
manual operation, and appurtenances.
1.02 RELATED SECTIONS
A.
Division 3 - Concrete
B.
Section 05 5000 - Metal Fabrication
C.
Section 35 0610 - Gate Schedule
1.03 REFERENCES
A.
ASTM A240 - Standard Specification for Stainless Steel Plate, Sheet and Strip
B.
ASTM A276 - Standard Specification for Stainless Steel Bars and Shapes.
C.
ASTM B211 - Standard Specifications for Aluminum and Aluminum-Alloy Bar, Rod, and WIre
D.
ASTM B221 - Standard Specifications for Aluminum and Aluminum-Alloy Extruded Bars,
Rods, Wire, Profiles, and Tubes.
E.
ASTM F593 - Stanard Specification for Stainless Steel Bolts, Hex Cap Screws, and Studs.
F.
ASTM F594 - Standard Specification for Stainless Steel Nuts.
G.
AWWA C561 - AWWA Standard for Fabricated Stainless Steel Slide Gates
1.04 SUBMITTALS
A.
Complete drawings, details, and specifications covering the gates, plates and appurtenances
shall be submitted in accordance with Section 01 3000 Administrative Requirements. Each
drawing shall be identified with the corresponding slide gate equipment tag number.
B.
Manufacturer's Certificate: Certify that the products of this section meet or exceed specified
requirements.
C.
Manufacturer's Instructions: Submit instructions needed for equipment installation.
D.
Certificate of Proper Installation as described in Section 01 4000.
E.
Operations and Maintenance Manuals as described in Section 01 7800.
1.05 DELIVERY, STORAGE, AND HANDLING
A.
As described in Section 46 0500, Equipment Installation.
1.06 SERVICE REPRESENTATIVE
A.
Provide qualified service representative to perform functions described in Section 01 4000 and
to sign the Certificate of Proper Installation as required by Section 01 4000.
B.
Include necessary trips by the Manufacturer's representative to provide one 8-hour work day(s)
on-site (travel time not included) for startup and training of operations personnel.
FABRICATED METAL SLIDE GATES
35 2016 - 1
HR Green, Inc.
Project No. 91140077
C.
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
Any additional trips required by the Contractor before or after final startup and training shall not
be charged to the Owner.
1.07 WARRANTY
A.
Full warranty against defects in materials and workmanship for two years after Substantial
Completion, including all parts, labor and expenses.
PART 2 PRODUCTS
2.01 MANUFACTURERS
A.
RW Gate Company, Troy NY.
B.
Whipps, Inc.
C.
Engineer approved equivalent.
2.02 SERVICE CONDITIONS
A.
Gates and plates will be used to control wastewater flows and isolate equipment or tanks.
Specific conditions shall be as specified herein and as stated in the Gate Schedule.
2.03 GENERAL
A.
Stop plates shall be constructed of 1/4" aluminum, reinforced as required, that slides into a
stainless steel frame with UHMW side seals and a flush bottom EPDM invert seal. The plate
shall have a handle for manual operation. The plate shall not have an actuator.
B.
Sluice gates shall be sealed on four sides. One side shall be open to the water surface and
used for level and flow control. An actuator shall be used to adjust gate height.
C.
Slide gates shall be sealed on three sides and shall be upward opening. Gate opening shall be
used to control level and flow of wastewater. An actuator shall be used to adjust gate opening.
D.
Weir gates shall be sealed on three sides and shall be downward opening. Gate opening shall
be used to control level and flow of wastewater. An actuator shall be used to adjust gate
opening.
E.
Gates and plates will be used to control wastewater flows and isolate equipment or tanks.
Specific conditions shall be as specified on the Gate Schedule.
F.
Equipment furnished and installed under this section shall be fabricated, assembled, erected,
and placed in proper operating condition in full conformity with drawings, specifications,
engineering data, instructions, and recommendations of the equipment manufacturer, unless
exceptions are noted by the Engineer.
G.
Gates and plates shall be furnished with all necessary parts and accessories indicated on the
drawings, specified, or otherwise required for a complete, properly operating installation and
shall be the latest standard products of a manufacturer regularly engaged in the production of
gates and plates.
H.
Number Plates
1. Each gate shall be provided with a number plate. Numerals shall be at least 1 inch (25
mm) high and shall be black baked enamel on anodized aluminum plate or stamped on a
bronze tag. The location of number plates and the method of attachment shall be
acceptable to the Engineer. The number assigned to each slide gate shall be as indicated
in the Gate Schedule.
I.
Governing Standard
1. Except as modified or supplemented herein, all gates and manual actuators shall conform
to the applicable requirements of AWWA C561.
FABRICATED METAL SLIDE GATES
35 2016 - 2
HR Green, Inc.
Project No. 91140077
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
2.04 PERFORMANCE AND DESIGN REQUIREMENTS
A.
Gates shall be designed for the design seating and unseating heads indicated in the Gate
Schedule. Actuators, regardless of type, shall be sized to produce the torque or thrust required
to operate the applicable gate when the gate is subject to the seating and unseating operating
heads set forth in the schedule.
1. Both the design head and the operating head shall be measured from the surface of the
liquid to the center line of the gate.
B.
Gates, actuators, and appurtenances shall be designed for the conditions and requirements
specified in the Gate Schedule.
C.
Design
1. Liberal factors of safety shall be used throughout the design in full accordance with the
latest revision of AWWA C561.
2. Gates shall be designed to fit into the structures indicated on the drawings.
D.
Leakage
1. Maximum allowable leakage of gates shall not exceed 0.05 gallon per minute per foot of
wetted perimeter at any head up to the maximum seating head and maximum unseating
head specified.
2.05 MATERIALS
A.
Frames, Guides, Slides, Pedestals, Wall Brackets, Reinforcing Members and Yoke Beams:
304L Stainless Steel.
B.
Flush Bottom Closure Seal: Compressible EPDM.
C.
Slide Seats and Bearing Bars: self-adjusting UHMW polyethylene bearing bars.
D.
Top of Slide Seals: self-adjusting UHMW bearing strips.
E.
Operating Stems: Stainless steel, ASTM A276 AISI Type 304 or 316.
F.
Stem Covers: Transparent butyrate plastic pipe.
G.
Assembly Fasteners: Stainless steel, ASTM A276 or ASTM F593 and F594 AISI Type 316.
H.
Anchor Bolts, Nuts, and Washers: Stainless steel, ASTM A276 or ASTM F593 and F594 AISI
Type 316, as specified iin Section 05 5000.
I.
Grout: As specified in Division 3.
2.06 CONSTRUCTION
A.
Frames
1. Each frame shall be an integral unit of extruded or welded structural shapes at least 1/4
inch. Frames shall be designed for embedment in concrete as indicated in the Gate
Schedule. Embedded frames shall have a minimum guide weight of 6 lbs/ft and shall be
recessed so that the waterway is not obstructed.
2. Guides shall be provided on each side of each frame. Wall mounted guides shall be of
the flanged frame design and shall have a minimum weight of 13 lbs/ft. Guides shall be
sufficiently strong to require no further reinforcing where they extend above the operating
floor, and shall support the entire height of the slide in all positions. The portion of the
frame with the anchor bolt holes shall have a minimum thickness of 1/2-inch.
3. Full-length plastic slide seats or bearing bars shall be provided on the upstream and
downstream sides of the slide on all gates to prevent metal-to-metal contact. Seats and
seals shall be mechanically fastened into grooves in the frame.
4. All self-contained gates shall be equipped with a yoke, shop welded to the top of vertical
frame members to support the actuator. Yokes shall be fabricated from a pair of rolled or
FABRICATED METAL SLIDE GATES
35 2016 - 3
HR Green, Inc.
Project No. 91140077
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
extruded channels and shall be designed to deflect not more than 1/720 of the span when
the gate is operated at the specified maximum seating pressure. Each yoke shall be
designed to permit vertical removal of the slide. Actuators shall be mounted so that no
eccentric loads are transmitted to the yoke.
B.
Slides
1. Slides shall be at least 1/4 inch thick and shall be provided with welded stiffeners to limit
deflection to 1/360 or 1/16-inch, whichever is less, under the maximum seating or
unseating head specified. The portion of the slide that engages the guide shall have a
minimum thickness of 1/2-inch. Slides shall be adequately reinforced to withstand, without
permanent distortion, the maximum thrust which can be transmitted by the operating
stem. Each slide shall have a reinforced pocket or an internally threaded nut welded to
the slide for connection of the stem. The pocket or nut shall be designed to withstand the
maximum thrust which can be transmitted by the operating stem.
C.
Closures
1. The bottom of each slide gate frame shall be recessed so that the waterway is not
obstructed. A compressible EPDM invert seal shall be mechanically fastened to the frame
invert on upward opening gates. The seal shall be of sufficient length to seal the bottom
corners of each slide.
D.
Operating Stems
1. Operating stems shall conform to the requirements of AWWA C561 as modified herein.
Stems shall have a minimum diameter of 1-1/2-inches. Contact surfaces of threads shall
be machined rolled, full depth Acme threads and shall be polished to a 16 microinch
finish, or smoother. Each stem shall be securely attached to the slide.
E.
Welding: All welds shall be performed by welders with ASME Section IX certification.
Passivate all welds in accordance with ASTM A380.
2.07 WEIR GATE
A.
Gate No. SLG05-02 shall be in-channel mounted, combination weir/stop gates with an overall
size of 54” x 84”. Each combination weir/stop gate shall be a gate assembly that consists of a
downward-opening weir gate and an upward-opening, hand-pull stop gate. Both the weir gate
and stop gate shall be mounted within the same framework. The stop gate shall be provided
with a top seal. The top seal for the stop gate and the invert seal for the weir gate shall be
self-adjusting UHMWPE with a nitrile compression cord and both shall be mounted to the
same horizontal structural member. Rubber seals are not acceptable in lieu of self-adjusting
UHMWPE seals.
2.08 MANUAL ACTUATORS
A.
General Requirements
1. Manual actuators shall conform to the requirements of AWWA C561 and shall be of the
types listed in the Gate Schedule.
2. Manual actuators of the gearbox type with a minimum gear ratio of 2:1and shall be
provided by the Slide gate manufacturer. Gearboxes shall be suitable for operation by a
portable operator.
3. All bearings and gears shall be totally enclosed in a weather-tight ductile iron housing
having a sufficient number of fittings to permit periodic lubrication of all internal moving
components without partial or total disassembly of the mechanism. The pinion shaft of
crank-operated mechanisms shall be stainless steel and shall be supported by roller
bearings or ball bearings.
FABRICATED METAL SLIDE GATES
35 2016 - 4
HR Green, Inc.
Project No. 91140077
4.
5.
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
Each manual actuator shall be designed to operate the gate when a 40 pound effort is
applied to the crank or the handwheel and shall be able to withstand, without damage, an
effort of 200 pounds.
Unless otherwise specified, manual actuators for rising stem self-contained gates shall be
designed for mounting directly on the frame yoke.
2.09 SHOP PAINTING
A.
Actuators shall be shop painted as specified in Section 09 9000.
2.10 SHOP TESTING
A.
Gates shall be completely assembled in the shop to ensure that all parts fit together properly.
PART 3 EXECUTION
3.01 INSTALLATION
A.
Slide gates and appurtenances shall be handled and installed in accordance with the
manufacturer's recommendations. Each embedded frame shall be carefully braced in the
forms before concrete is placed, or a space shall be boxed out and the frame shall be grouted
in place later with non-shrink grout per the gate manufacturer’s recommendation and per
Division 3. All excess grout and debris shall be removed from the gates. Care shall be
exercised to ensure that frame members and anchor bolts do not rest upon or contact steel
reinforcing bars. Anchor bolts shall be carefully set to template.
B.
Each gate shall be carefully installed and shall be so adjusted that it does not bind or leak in
excess of specified requirements. Stems and operating mechanisms shall be treated as
precision equipment and handled with care.
C.
All bolts shall be tightened and all items requiring lubrication, including stem threads, shall be
lubricated. Anti-seize thread lubricant shall be liberally applied to the threaded portion of
stainless steel anchor bolts during the installation and tightening of nuts. Excess lubricant shall
be thoroughly removed following final tightening.
D.
After installation, each gate shall be operated through at least two complete open-close cycles,
readjusted and re-operated as necessary, and left in a condition acceptable to the Engineer.
3.02 SCHEDULE
A.
SLG05-01
1. Location: Upstream of the manual screen in the west screen channel of Pump Station 5.
2. Gate Size: 54" x 84"
3. Actuator Type: Manual
B.
SLG05-02
1. Location: Upstream of the manual screen in the east screen channel of Pump Station 5.
2. Total Gate Size: 54" x 84"
3. Stop Plate Size: 54" x 42"
4. Actuator Type: Manual
C.
SLG10-01
1. Location: Between the two bar screen channels in Building 10, downstream (east) of
existing stop plates and upstream (west) of existing wet wells.
2. Gate Size: 66" x 96"
3. Actuator Type: Manual
END OF SECTION 35 2016
FABRICATED METAL SLIDE GATES
35 2016 - 5
HR Green, Inc.
Project No. 91140077
FABRICATED METAL SLIDE GATES
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
35 2016 - 6
HR Green, Inc.
Project No. 91140077
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
SECTION 46 2151
MECHANICAL SCREENING EQUIPMENT (CENTER FLOW TYPE) AND COMPACTOR
PART 1 GENERAL
1.01 SECTION INCLUDES
A.
Furnish and install two (2) center flow type mechanical fine screens, one (1) sluice system and
two (2) washing compactors as shown in the Contract Documents.
B.
Each mechanical screen and compactor shall be furnished and installed complete with:
1. Required supports.
2. Mechanical equipment required for proper operation including complete drive units.
3. Instrumentation and controls as specified.
1.02 REFERENCES
A.
American Institute of Steel Construction (AISC).
B.
American Iron and Steel Institute (AISI).
C.
American National Standards Institute (ANSI).
D.
American Society of Mechanical Engineers (ASME).
E.
American Society of Testing and Materials (ASTM).
F.
American Society of Civil Engineers (ASCE).
G.
American Welding Society (AWS).
H.
International Building Code (IBC).
I.
International Electric Code (IEC).
J.
Institute of Electrical and Electronics Engineers (IEEE).
K.
National Electric Code (NEC).
L.
National Electrical Manufacturers Association (NEMA).
M. Underwriters Laboratory (UL and cUL).
1.03 SUBMITTALS
A.
Shop Drawings:
1. See Section 01 3000 - Administrative Requirements, for submittal procedures.
2. Product technical data including:
a. Acknowledgement that products submitted meet requirements of standards
referenced.
b. Manufacturer's installation instructions.
c. Manufacturer's storage and handling instructions.
d. Equipment identification utilizing numbering system and name utilized in Drawings.
e. Equipment installation details:
1) Location of anchorage.
2) Type, size, and materials of construction of anchorage.
3) Anchorage setting templates.
4) Manufacturer's installation instructions.
f.
Equipment areas classification rating.
g. Shipping and operating weight.
h. Equipment physical characteristics:
1) Dimensions (both horizontal and vertical).
2) Materials of construction and construction details.
i.
Equipment factory primer and paint data.
MECHANICAL SCREENING EQUIPMENT (CENTER FLOW TYPE) AND COMPACTOR
46 2151 - 1
HR Green, Inc.
Project No. 91140077
3.
4.
5.
6.
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
j.
Manufacturer's recommended spare parts list.
k. Equipment lining and coatings.
l.
Equipment utility requirements include air, natural gas, electricity, and water.
Mechanical and Process Equipment:
a. Operating characteristics:
1) Technical information including applicable performance curves showing
specified equipment capacity, rangeability, and efficiencies.
2) Computational Fluid Dynamic analysis of project showing headloss and velocity
through the system.
3) Brake horsepower requirements.
4) Evidence of physical testing to verify mathematical model of velocity.
5) Hydraulic performance curves showing the relationship of head loss versus the
full range of downstream liquid depths for various hydraulic capacities.
6) Finite Element Analysis of the screen under loading with a Professional
Engineer certification.
b. Utility piping connection size, type and location
c. Equipment bearing life calculation.
d. Equipment foundation data:
1) Equipment center of gravity.
2) Criteria for designing vibration, special or unbalanced forces resulting from
equipment operation.
Electrical and Control Equipment:
a. Electric motor information:
1) Documentation that motors provided are high efficiency units.
2) Nameplate data.
3) Service factor on motors 1/2 HP and above.
4) Motor enclosure type.
5) NEMA frame size.
6) NEMA design code.
7) Insulation type and temperature rise.
8) Efficiency and power factor at full load, 3/4 load, and 1/2 load.
b. Control panels:
1) Panel construction.
2) Three-line Power Diagram.
3) Control Schematic.
4) Field Wiring Diagram.
5) Scaled panel face and subpanel layout.
6) Technical product data on panel components.
7) Panel and subpanel dimensions and weights.
8) Panel access openings.
9) Nameplate test.
10) Panel anchorage.
c. Control loop descriptions.
A certificate from an industry recognized, independent testing facility verifying
compliance with screening Capture Ratio requirement.
Operation and maintenance manuals as described in Section 01 7800.
1.04 DELIVERY, STORAGE, AND HANDLING
A.
Receive and unload shipments to plant site from suppliers of equipment under this contract.
MECHANICAL SCREENING EQUIPMENT (CENTER FLOW TYPE) AND COMPACTOR
46 2151 - 2
HR Green, Inc.
Project No. 91140077
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
B.
Unload equipment as soon as possible after arrival.
C.
Pay freight car and truck demurrage, detention, and any other costs which may be billed to
Owner due to failure to unload cars or trucks within time required by freight companies.
D.
Provide physical protection for equipment placed in storage.
1. Support stored equipment above ground and cover with canvas or other heavy-duty
sheeting. Cover shall be securely fastened and shall be replaced if torn or otherwise
damaged during storage period.
2. Store motors in dry, warm place and in accordance with manufacturer's
recommendations.
3. Maintain desiccant between cover and motor frames on motors. Provide desiccant of type
permitting visual determination of condition of desiccant. Replace desiccant when it
becomes ineffective.
4. Store the following items in weatherproof, heated (minimum 50 degrees F.) building
complete with bins for storage of small pieces of equipment. Storage inside of existing
treatment plant not available.
a. Electronic instruments and cabinets.
b. Electrical equipment with general purpose enclosures.
c. Insulation materials.
d. Rotating equipment.
e. Miscellaneous electronic equipment, gaskets, and small machined parts.
f.
Instruments and controls.
E.
Inspect stored equipment weekly. Renew protective coatings as necessary to preserve fitness
of equipment.
F.
Provide for safekeeping of materials or equipment received. Store and maintain materials and
equipment after receipt until completed installation is accepted by Owner. Such storage and
maintenance shall be in accordance with manufacturer's recommendations and requirements
of these Specifications. Provide materials, equipment, and labor required for such storage and
maintenance.
G.
Contractor shall be accountable for any deterioration of materials or equipment occasioned by
improper storage or maintenance, and shall recondition, repair, or replace any such materials
or equipment without additional cost to Owner.
H.
The screening equipment shall be designed to fit in the existing channels as shown on the
Drawings. Screening equipment may be lowered through the existing roof hatches shown on
the drawings. Each screen shall be shipped as a complete assembly, dis-assembled on site
into modular pieces, and re-assembled in place by Contractor. No single section shall be larger
than 25 feet. The sluice and the Washing Compactors will be carried through the main
doorway.
1.05 SERVICE REPRESENTATIVE
A.
Provide qualified service representative to perform functions described in Section 01 4000 and
to sign the Certification of Proper Inspection attached to Section 01 4000.
B.
Include two (2) trip by the manufacturer's representative to provide two separate 8-hour work
days on-site (travel time not included) for startup and training of operations personnel per trip.
Training may be videotaped by Owner.
C.
Additional trips required by the Contractor before or after final startup and training shall not be
charged to the Owner.
MECHANICAL SCREENING EQUIPMENT (CENTER FLOW TYPE) AND COMPACTOR
46 2151 - 3
HR Green, Inc.
Project No. 91140077
D.
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
Include one (1) trip and two (2) days from a qualified service representative to provide the
following:
1. Observe the disassembly of the delivered screen machine.
2. Observe the rigging and reassembly of the screen machine in place.
3. At any time, advise the Contractor if the work is being performed inadequately.
1.06 WARRANTY
A.
Full warranty against defects in materials and workmanship for two years after substantial
completion, including all parts, labor, and expenses.
PART 2 PRODUCTS
2.01 MANUFACTURERS
A.
Hydro Dyne Engineering; Hydro-Flo Series.
B.
Ovivo
2.02 EQUIPMENT
A.
System Description
1. All system components to be suitable for operation in Class 1 Div 1, group D hazardous
environment.
2. The screen will have a belt that automatically rotates within the internal guide system of
the static frame.
3. The fine screen herein specified will be of the center flow type. The flow enters the inside
of the continuous belt and exits through both sides and the bottom of the belt.
4. The screen will be installed into the channel as shown on the contract drawings to
accommodate the flow pattern through the screen belt.
5. The solids will collect as a mat on the inside of the continuous belt. The belt will
intermittently rotate and elevate the solids to the discharge point. Larger objects will be
picked up by a series of hooks and trays placed at regular intervals.
6. The solids will be removed at the top of the screen by two spray bar headers positioned
on the outside of the belt. The screenings will drop into an internal hopper.
7. The continuous belt will be directly driven by drive sprockets that shall support and rotate
the grid assembly.
8. The screen will be totally enclosed and have access covers that will be lightweight and
easily removable for maintenance.
9. The Washing Compactor will be positioned next to the screening channels and will be fed
by a sluice system.
10. Each Washing Compactor will be adequately sized to handle all the screening and wash
water that will be generated when both screens are operating at peak flow. The system
will be required to wash the screenings to reduce the organic content and compact the
remaining solids into a dry plug.
11. The Washing Compactor will generally comprise of a screw auger rotating within the
washing and drainage trough, a wash water system, a compaction zone and an outlet
chute arrangement.
12. All stainless steel (including frame, grid, and drive components) mentioned below as
stainless steel shall be T304 stainless steel. All hardware shall be T316 stainless steel.
13. The screen shall have undergone performance testing by an industry recognized,
independent testing facility. The results of this testing shall verify a Screening Capture
Ratio of at least 84% for solids equal to or larger than the screen grid opening listed in
Design Requirements below. The manufacturer will be required to provide certification to
show compliance.
MECHANICAL SCREENING EQUIPMENT (CENTER FLOW TYPE) AND COMPACTOR
46 2151 - 4
HR Green, Inc.
Project No. 91140077
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
B.
Design Requirements:
1. Quantity: Two (2) Screens, one (1) sluice and two (2) Washing Compactors
2. Peak flow per screen: 25 MGD.
3. Average flow per screen: 8 MGD.
4. Screen Opening Diameter: 6 mm.
5. Head loss at peak flow: Less than 7.02 inches at 50% blinding.
6. Influent throat velocity at peak flow: Less than 5 feet per second at 50% blinding.
7. Mesh velocity at peak flow: Less than 5 feet per second at 50% blinding.
8. Exit velocity at peak flow: Less than 5 feet per second at 50% blinding.
9. Channel width: 48 inches, see drawings.
10. Channel depth: 198 inches, see drawings.
11. Upstream Water Depth: Maximum of 72".
12. Maximum differential water head across screen: 48 inches
13. Screenings discharge height: 4 feet minimum above operating floor elevation, see
drawings.
14. Top of channel to operating floor: 22.50 feet.
15. Operating Floor Elevation: 671.00
16. Screen Drive motor size: <=1 HP.
17. Compactor Drive motor size: <=3 HP
18. Screen wash water requirements: <=61 GPM at 60 PSI
19. Compactor wash water requirements: <=8 GPM at 60 PSI
20. Compactor rate of dewatering: 45% dry solids minimum
21. Compactor capacity: 70 cubic feet/hr
C.
Performance Requirements:
1. The screen shall be capable of presenting a clean filtration surface to the influent stream
at all times during continuous operation. It shall be capable of intermittent operation.
Operation shall be variable through the use of a timer or through level control.
2. The screening unit shall use a single drive unit for screening, conveying and cleaning of
the filter belt assembly.
3. The screen shall include an integral sluice system that will extend to feed the Washing
Compactors.
4. All routine maintenance shall be accomplished while the screening unit is still in the
bottom of the channel.
5. The compactor shall produce washed compacted screenings to pass EPA's Paint Filter
Test.
6. The compactor shall be operated in a forward reverse equence, repeated four times
(adjustable) to ensure thorough cleaning of screenings.
7. During peak flow, the compactor will automatically switch to operate only in forward
direction.
2.03 CONSTRUCTION AND MATERIALS
A.
Screen Frame Assembly:
1. The frame shall be constructed heavy duty stainless steel and shall be a rectangular box
construction. The design will ensure that the support frame meshes with the closure seal
on each guide link to prevent passage of screening material and grit particles.
2. The unit shall be supported at the operating floor elevation by a top support bar which
mounts to the top of the channel with concrete anchor bolts. The supports will be
constructed from 304 SS. Routine service of the unit must be possible with the screen in
the channel.
MECHANICAL SCREENING EQUIPMENT (CENTER FLOW TYPE) AND COMPACTOR
46 2151 - 5
HR Green, Inc.
Project No. 91140077
3.
4.
5.
6.
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
The frame shall accommodate stainless steel protective covers designed to prevent
leakage and contain spray wash. The protective covers shall extend from the headspace
of the screen, through the operating floor, down to the top of the channel. All access
covers for maintenance will be lightweight and easily removable. Screens with covers
requiring neoprene, rubber or plastic seals are not acceptable.
The screen manufacturer will supply the stainless steel angled filler plates to connect
from the upstream corners of the support frame to the channel walls.
The back-plate of the screen shall be furnished with a bypass wier that will allow high
flows to bypass screen through a manual bar screen.
The guide link system will travel around a stainless steel guide wear track that is integral
to the support frame. Top and bottom wear tracks shall be bolted in and field replaceable.
B.
Filter Belt and Screen Assembly:
1. The screenings belt will consist of panels manufactured from 3/8” thick UHMWPE with
perforations of the specified opening.
2. The perforated panels will be supported by 12 gauge stainless steel vertical mounted
lifting hooks horizontally spaced a maximum of 3 inches apart preventing deflection. The
lifting hooks shall support the screening grid and bear tension loads across the entire
length and width of the screen belt.
3. The hooks on the elements shall form horizontal lifting trays or shelves for removing large
solids and rags every 8 inches around the entire screen grid.
4. The perforated panels will be connected by heavy duty stainless steel axles every 8
inches to form a continuous belt that will rotate within the frame's guide system. The axle
design will allow the plates to pivot and create a seal between the perforated panels to
prevent the passage of solids.
5. Grid to frame sealing systems that use adjustable UHMWPE strips attached to the frame
will not be acceptable.
C.
Screen Drive Assembly:
1. Each screen will have a single maximum 1 hp, VFD controlled electric geared motor
suitable for a 460/3/60 supply, explosion proof environment. The motor will be TEFC
NEMA rated. The motor will be located outside of the screen covers and above the top of
the channel.
2. The gear reducer shall be directly coupled to a heavy duty shaft machined form solid
stainless steel round bar.
3. The drive shaft shall be supported on both ends by grease-filled roller bearings. Separate
grease-filled self-contained cartridge seals shall be mounted on a drive shaft between
bearings and frame to eliminate spray wash from entering bearings or gear reducer.
4. The continuous belt will be supported and rotated around heavy duty stainless steel
sprockets located on the drive shaft in the head space of the screen.
5. These sprockets will have lugs that transmit torque directly from the gear reducer to
notches on the underside of the UHMWPE guide links. Driving forces shall be transmitted
to areas located behind the screen's grid to prevent solids from contacting drive surfaces.
6. Chain driven systems or screens with wheels submerged in the wastewater are not
acceptable.
D.
Screen Spray System:
1. Two stainless steel spray wash headers will be located in the head space of the screen to
offload the screenings from the continuous belt.
2. The spray bars will incorporate brass nozzles at 2 inch spacing that can easily be
replaced or removed for cleaning.
MECHANICAL SCREENING EQUIPMENT (CENTER FLOW TYPE) AND COMPACTOR
46 2151 - 6
HR Green, Inc.
Project No. 91140077
3.
4.
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
The spray bars will be positioned behind the rotating belt and will backwash the solids into
an internal hopper manufactured from stainless steel. The wash water will be used to
continuously flush the screenings from the internal hopper into the extended sluice or
directly into the washing compactor.
The addition of a rotating or static brush system to aid offloading will not be acceptable.
2.04 SLUICE
A.
The screenings sluice will collect screenings and wash water from the discharge hopper of the
screen and transfer them by gravity at a slope of 1.5%-2% directly into the Washing
Compactors washing trough. Mechanically driven conveyors are not acceptable.
B.
The sluice will be manufactured from stainless steel. It shall comprise of U-shaped lengths of
trough that will be (flange connected/welded) to the desired overall length. Sluice shall be
bolted inside the the headspace of the screen.
C.
A change in direction will be achieved using long swept bends that will prevent blockages from
occurring.
D.
The sluice will be supplied with a Y-branch that will divert the screenings and wash water from
either or both screens to either or both Washing Compactors. The sluice system must provide
complete redundancy so that either screen can feed either Washing Compactor.
E.
The diversion between Washing Compactors will be provided by electrically actuated gates
that will be installed into the sluice. These gates will be controlled by the main control panel
that will provide automatically change the duty Washing Compactor based on run time.
F.
Covers will be a lightweight, no more than 6 feet long and easily removed by a single operator.
G.
All stainless steel support legs will be provided by the Manufacturer. Contractor shall grout as
required.
H.
Washing Compactor
1. The main body will be the washing trough that will receive screenings and wash water
directly from the discharge point of the sluice.
2. The washing trough will house the screw auger and provide a dedicated section to reduce
organic content. It will comprise of angled side walls manufactured from 10 gauge
stainless steel that will direct the screenings onto the screw auger, and a drainage section
in which the screw auger will ride.
3. The drainage section will be a stainless steel wedge wire basket with 2 mm slots. This
wedge wire drainage section shall be removable and easily replaceable in the field with
no special tools. The flights of the screw will be fitted with a stiff nylon brush that will
maintain contact with the wedge wire, preventing blockages. The brushes will be supplied
in pre-coiled lengths with suitable clamps. The brushes must be replaceable without
removing the screw from the washing trough.
4. The underside of the washing trough will be a catch pan that will collect the contaminated
water that passes through the drainage section. The catch pan will feed a 6 inch diameter
outlet connection. The Main Contractor will connect the pipe to take the water back to the
main flow.
5. The stainless steel screw auger will sit in the washing trough. Washing compactors with
shaft less screws are not acceptable as a shaft is required to support the flight and
provide necessary torque and compaction.
6. The auger will be a full pitch screw supported at the compaction end by a minimum 7.5"
wide UHMWPE Flight Support Bearing that creates a supporting collar around the screw
flight. Each bearing ring will be designed to rotate through 180 degrees to provide a
second wear surface below the screw. Each wear surface shall be fitted with a set screw
MECHANICAL SCREENING EQUIPMENT (CENTER FLOW TYPE) AND COMPACTOR
46 2151 - 7
HR Green, Inc.
Project No. 91140077
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
that can be removed for inspection. The operator will be able to inspect and rotate the
bearing by removing the outside cover without disassembling the equipment.
7. The screw will rotate allowing wash water and free organic/fecal material finer than trough
openings to escape and return to the influent flow. The wash water system will flush the
separated organic material through the drainage section in solution or as small particles.
8. A portion of the washing water will enter the washing trough with the screenings. this will
be supplemented by spray nozzles that will direct water on to the screenings prior to
compaction. The nozzles will be recessed into the side wall of the washing trough to
protect from ragging and blockage.
9. The screw will transfer the washed screenings into the compaction zone. This will be a
section of stainless steel pipe followed by the UHMWPE flight support bearing. The total
length of this section will at a minimum equal two full pitches of the screw flight.
10. The compacted screenings will be pushed through the compaction zone. The outlet chute
will be tapered along the full length and will elevate the dewatered screenings to
discharge by gravity into a waste receptacle (by others).
I.
Washing Compactor Drive Mechanism
1. Each Washing Compactor will have a single 3 hp (minimum), inverter duty electric motor
suitable for a 460/3/60 supply and rated for a Class 1 Div 1 explosion proof environment.
The motor shall be TEFC NEMA rated.
2. There shall be the ability to change the height of the screw within the washing trough by
using adjustment bolts on the gearbox plate. this will prevent excess wear of the screw
flights and trough.
2.05 CONTROL PANEL
A.
The manufacturer will supply one (1) UL listed 508A stainless steel main control panel and four
(4) local control stations that shall automatically control screens and washing compactors
supplied.
B.
One control panel shall control two screens and two washing compactors.
C.
The Main Control Panel: NEMA 4X. Control panel shall consist of the following components:
1. Stainless steel NEMA 4X control panel enclosure
2. Main fused disconnect/lockout switch
3. Hand/Off/Auto Switch
4. Recycle timer
5. Hour run meter
6. Control transformer
7. Fuses and breakers
8. Motor circuit protectors.
9. Motor starters
10. Motor overload sensors
11. Control Power indicator
12. Screen No. 1 Running indicator light
13. Screen No. 1 Fault indicator light
14. Screen No. 2 Running indicator light
15. Screen No. 2 Fault indicator light
16. Compactor No. 1 Running indicator light
17. Compactor No. 1 Fault indicator light
18. Compactor No. 2 Running indicator light
19. Compactor No. 2 Fault indicator light
20. Emergency Stop Pushbutton (Maintained - Pull to Reset)
MECHANICAL SCREENING EQUIPMENT (CENTER FLOW TYPE) AND COMPACTOR
46 2151 - 8
HR Green, Inc.
Project No. 91140077
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
System Reset Pushbutton
Screen No. 1 LOCAL-OFF-AUTO selector switch
Screen No. 2 LOCAL-OFF-AUTO selector switch
Compactor No. 1 LOCAL-OFF-AUTO selector switch
Compactor No. 2 HLOCAL-OFF-AUTO selector switch
Intrinsically safe barriers for level transmitters: dual-channel
Power Supply for ultrasonic level transmitters: 24 VDC. Power output shall be rated for
minimum of 125% of combined load of four level transmitters.
PLC, Allen Bradley MicroLogix
HMI Panelview 300 micro
Channel Level Controller
Variable frequency screen drives
Control circuits for electric sluice gates
D.
Two Screens and two Compactors shall be controlled from one vendor-furnished Control Panel
with interface signals to OWNER's PLC. Provide control sequence for reference and
integration into OWNER's existing control system.
E.
Coordinate Control Panel operation with Section 46 2153 Container Handling System Control
Panel and Section 43 2100 Packaged Skid Mounted Water Booster Pumping System.
F.
Provide detailed operating description for all equipment supplied within this Section.
Operating description shall reference names, device tags, and instrument tags as shown on
applicable Process and Instrumentation Diagrams (P&IDs).
G.
Intent is to provide sufficient detail to allow programming of OWNER's PLC in order to operate
as recommended by screen manufacturer. OWNER's PLC and its programming are provided
by OWNER.
H.
Describe the following:
1. Usage of all control signals monitored and controlled by OWNER's PLC.
2. Detailed sequence of operation for all components included in this Section.
3. Recommended initial control and alarm setpoints.
4. Scaling and setpoint information for all control signals associated with equipment
included in this Section.
I.
Loss of Motion Sensor
1. Provide zero motion speed switches located on end of driven shafts opposite gear
reducers to be hardwired to associated Screen or Compactor motor drives.
2. NEMA 7, 120 VAC, 5 amps, isolated contacts, 10 second start delay.
J.
Provide and coordinate current sensing relay from VFD. Coordinte with Contractor to
configure and adjust current sensing relay after installation for proper operation as part of the
start-up services.
K.
Local control stations: NEMA 7X. Each local control station shall consist of the following
components:
1. 3-Hole, NEMA 7 Cast Aluminum [START, STOP, & E-Stop] one per screen
2. 3-Hole, NEMA 7 Cast Aluminum [START, STOP, & E-Stop] one per compactor
L.
Ultrasonic level transmitters for channel level:
1. (1) Upstream of Screen No. 1
2. (1) Downstream of Screen No. 1
3. (1) Upstream of Screen No. 2
4. (1) Downstream of Screen No. 2
5. Output: 4-20 mA DC.
MECHANICAL SCREENING EQUIPMENT (CENTER FLOW TYPE) AND COMPACTOR
46 2151 - 9
HR Green, Inc.
Project No. 91140077
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
2.06 BY-PASS MANUAL RAKE SCREEN
A.
Manufacturer to provide two (2) screens to be used in emergency by-pass situations. Screens
shall be 1" bar screens to be raked manually.
B.
Bar screens shall be set behind mechanical screens. During high flow events, water shall pass
over back plate of mechanical screens into a channel isolated from flow being screened via
mechanical screen. Flow shall pass through 1" bar screen and then combine with mechanically
screened flow.
C.
Bar screens shall be capable of screening up to 50 MGD in combination with mechanical
screens.
D.
Material shall be resistant to corrosion.
2.07 ACCESSORIES
A.
The manufacturer will supply the following accessories with each screen:
1. Five (5) 1.5" explosion proof solenoid valves.
2. Four (4) 2" wash water strainers.
3. Four (4) wash water pressure gauges
4. Two (2) electrical actuator gates for sluice
5. One (1) stainless steel rake with shaft length allowing full access to top of screen height.
2.08 SPARE PARTS
A.
The following spare parts shall be furnished with each screen:
1. Ten (10) hook links and element spacers.
2. Two (2) grid axles.
3. Two (2) guide links.
4. Two (2) screen panels
5. One (1) center support link
6. One (1) brush for the screw
2.09 SURFACE PREPARATION AND PAINTING
A.
All stainless steel materials, including hardware, shall be acid passivated for quality control,
removal of heat affected discoloration, surface treatment for corrosive environments and to
provide a uniform finish to stainless surfaces.
B.
All ferrous surfaces (except stainless steel) shall be coated with a pre-primer, primer and an
exterior top coating, or fusion bonded polyester coating suitable for humid/wet environments
for superior corrosion protection.
C.
Motor and gearbox shall be manufacturer's standard coating for humid/wet environments for
superior corrosion protection.
PART 3 EXECUTION
3.01 INSTALLATION
A.
Install in accordance with manufacturer's instructions and as indicated on drawings, by
qualified craftsmen.
B.
Location, orientation, and quantities as indicated on drawings.
C.
Construction sequencing shall follow section 01 1000 SUMMARY.
D.
Include all required related items necessary for a complete installation.
E.
Coordinate for compatibility of manufacturer's shop coating and final finish.
F.
Support and anchor as indicated by manufacturer and on drawings.
MECHANICAL SCREENING EQUIPMENT (CENTER FLOW TYPE) AND COMPACTOR
46 2151 - 10
HR Green, Inc.
Project No. 91140077
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
G.
Start up in presence of manufacturer's service representative.
H.
Test power draw and motor vibration during initial operation with manufacturer's service
representative.
I.
The Contractor is responsible to daily clean the manual bar rack and carry the screenings to
the top floor during the entire period (including weekends and legal holidays) between the
existing mechanical bar screen removal and the new bar screen start-up and operation. The
screenings shall be disposed to the existing compactor, which shall be available for service at
all times required to dispose the manually removed screenings.
3.02 FIELD QUALITY CONTROL
A.
The unit will be factory operated and inspected prior to shipment. The Engineer and/or Owner
may, at their option and own expense, witness the factory test.
END OF SECTION 46 2151
MECHANICAL SCREENING EQUIPMENT (CENTER FLOW TYPE) AND COMPACTOR
46 2151 - 11
HR Green, Inc.
Project No. 91140077
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
MECHANICAL SCREENING EQUIPMENT (CENTER FLOW TYPE) AND COMPACTOR
46 2151 - 12
HR Green, Inc.
Project No. 91140077
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
SECTION 46 2152
MECHANICAL SCREENING EQUIPMENT (BAR SCREEN) AND COMPACTOR
PART 1 - GENERAL
1.01 SECTION INCLUDES
A.
Furnish, install and test two (2) mechanically cleaned screens, one (1) sluice system and two
(2) compactors as shown on the contract documents.
B.
Each screen shall be furnished and installed with:
1. Required supports.
2. Mechanical equipment required for proper operation including complete drive units.
3. Instrumentation and controls as specified.
C.
Each compactor shall be furnished and installed with:
1. Shafter screw
2. Sieve zone
3. Wash zone
4. Press zone
5. Transport zone
6. Collection Pan
7. Discharge Tube
8. Drive system and controls.
1.02 REFERENCES
A.
American Institute of Steel Construction (AISC).
B.
American Iron and Steel Institute (AISI).
C.
American National Standards Institute (ANSI).
D.
American Society of Mechanical Engineers (ASME).
E.
American Society of Testing and Materials (ASTM).
F.
American Society of Civil Engineers (ASCE).
G.
American Welding Society (AWS).
H.
International Building Code (IBC).
I.
International Electric Code (IEC).
J.
Institute of Electrical and Electronics Engineers (IEEE).
K.
National Electric Code (NEC).
L.
National Electrical Manufacturers Association (NEMA).
M. Underwriters Laboratory (UL and cUL).
1.03 SYSTEM DESCRIPTION
A.
Screen shall remove solids from raw wastewater.
B.
Screenings shall be mechanically raised on screen to the dead plate and automatically
discharged as indicated on the plans or specified in this section.
C.
The compaction system shall be designed to receive, positively convey and compact
screenings discharged by the sluice feed from the bar screen. The screenings shall be
introduced into the inlet hopper directly over the Sieve Zone, washed in the Wash Zone,
compacted in the Press Zone, conveyed through the Transport Zone, and discharged from the
Discharge Tube into a suitable receptacle (provided by others).
MECHANICAL SCREENING EQUIPMENT (BAR SCREEN) AND COMPACTOR
46 2152 - 1
HR Green, Inc.
Project No. 91140077
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
1.04 SUBMITTALS
A.
Shop Drawings:
1. See Section 01 3000 - Administrative Requirements, for submittal procedures.
2. Product technical data including:
a. Acknowledgement that products submitted meet requirements of standards
referenced.
b. Manufacturer's installation instructions.
c. Manufacturer's storage and handling instructions.
d. Equipment identification utilizing numbering system and name utilized in Drawings.
e. Equipment installation details:
1) Location of anchorage.
2) Type, size, and materials of construction of anchorage.
3) Anchorage setting templates.
4) Manufacturer's installation instructions.
f.
Equipment areas classification rating.
g. Shipping and operating weight.
h. Equipment physical characteristics:
1) Dimensions (both horizontal and vertical).
2) Materials of construction and construction details.
i.
Equipment factory primer and paint data.
j.
Manufacturer's recommended spare parts list.
k. Equipment lining and coatings.
l.
Equipment utility requirements include air, natural gas, electricity, and water.
3. Mechanical and Process Equipment:
a. Operating characteristics:
1) Technical information including applicable performance curves showing
specified equipment capacity, rangeability, and efficiencies.
2) Computational Fluid Dynamic analysis of project showing headloss and velocity
through the system.
3) Brake horsepower requirements.
4) Evidence of physical testing to verify mathematical model of velocity.
5) Hydraulic performance curves showing the relationship of head loss versus the
full range of downstream liquid depths for various hydraulic capacities.
6) Finite Element Analysis of the screen under loading with a Professional
Engineer certification.
b. Utility piping connection size, type and location
c. Equipment bearing life calculation.
d. Equipment foundation data:
1) Equipment center of gravity.
2) Criteria for designing vibration, special or unbalanced forces resulting from
equipment operation.
4. Electrical and Control Equipment:
a. Electric motor information:
1) Documentation that motors provided are high efficiency units.
2) Nameplate data.
3) Service factor on motors 1/2 HP and above.
4) Motor enclosure type.
5) NEMA frame size.
MECHANICAL SCREENING EQUIPMENT (BAR SCREEN) AND COMPACTOR
46 2152 - 2
HR Green, Inc.
Project No. 91140077
b.
c.
B.
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
6) NEMA design code.
7) Insulation type and temperature rise.
8) Efficiency and power factor at full load, 3/4 load, and 1/2 load.
Control panels:
1) Panel construction.
2) Point-to-point wiring diagrams.
3) Scaled panel face and subpanel layout.
4) Technical product data on panel components.
5) Panel and subpanel dimensions and weights.
6) Panel access openings.
7) Nameplate test.
8) Panel anchorage.
Control loop descriptions.
Operation and maintenance manuals as described in Section 01 7800.
1.05 DELIVERY, STORAGE, AND HANDLING
A.
Receive and unload shipments to plant site from suppliers of equipment under this contract.
B.
Unload equipment as soon as possible after arrival.
C.
Pay freight car and truck demurrage, detention, and any other costs which may be billed to
Owner due to failure to unload cars or trucks within time required by freight companies.
D.
Provide physical protection for equipment placed in storage.
1. Support stored equipment above ground and cover with canvas or other heavy-duty
sheeting. Cover shall be securely fastened and shall be replaced if torn or otherwise
damaged during storage period.
2. Store motors in dry, warm place and in accordance with manufacturer's
recommendations.
3. Maintain desiccant between cover and motor frames on motors. Provide desiccant of
type permitting visual determination of condition of desiccant. Replace desiccant when it
becomes ineffective.
4. Store the following items in weatherproof, heated (minimum 50 degrees F.) building
complete with bins for storage of small pieces of equipment. Storage inside of existing
treatment plant not available.
a. Electronic instruments and cabinets.
b. Electrical equipment with general purpose enclosures.
c. Insulation materials.
d. Rotating equipment.
e. Miscellaneous electronic equipment, gaskets, and small machined parts.
f.
Instruments and controls.
E.
Inspect stored equipment weekly. Renew protective coatings as necessary to preserve fitness
of equipment.
F.
Provide for safekeeping of materials or equipment received. Store and maintain materials and
equipment after receipt until completed installation is accepted by Owner. Such storage and
maintenance shall be in accordance with manufacturer's recommendations and requirements
of these Specifications. Provide materials, equipment, and labor required for such storage and
maintenance.
G.
Contractor shall be accountable for any deterioration of materials or equipment occasioned by
improper storage or maintenance, and shall recondition, repair, or replace any such materials
or equipment without additional cost to Owner.
MECHANICAL SCREENING EQUIPMENT (BAR SCREEN) AND COMPACTOR
46 2152 - 3
HR Green, Inc.
Project No. 91140077
H.
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
The screening equipment shall be designed to fit in the existing channels as shown on the
Drawings. All screening equipment will be lowered through the existing roof hatches shown on
the drawings. Each screen shall be shipped as a complete assembly, dis-assembled on site
into modular pieces, and re-assembled in place by Contractor. No single section shall be larger
than 25 feet. The sluice and the Washing Compactors will be carried through the main
doorway.
1.06 SERVICE REPRESENTATIVE
A.
Provide qualified service representative to perform functions described in Section 01 4000
and to sign the Certification of Proper Inspection attached to Section 01 4000.
B.
Include necessary trips by the manufacturer's representative to provide two separate 8-hour
work days on-site (travel time not included) for startup and training of operations personnel.
Training may be video taped by Owner.
C.
Additional trips required by the Contractor before or after final startup and training shall not be
charged to the Owner.
D.
Include one (1) trip and two (2) days from a qualified service representative to provide the
following:
1. Observe the disassembly of the delivered screen machine.
2. Observe the rigging and reassembly of the screen machine in place.
3. At any time, advise the Contractor if the work is being performed inadequately.
1.07 WARRANTY
A.
Full warranty against defects in materials and workmanship for two years after substantial
completion, including all parts, labor, and expenses.
PART 2 - PRODUCTS
2.01 MANUFACTURERS
A.
Headworks; Bar Screen Type MS1 and Screwpactor
2.02 DESIGN REQUIREMENTS
A.
Quantity of bar screens: 2
B.
Channel width: 4.0 feet
C.
Channel depth: 16.5 feet
D.
Discharge height above operating floor: 5.0 feet
E.
Bar spacing: 0.25 inch
F.
Maximum design flow per screen: 50 MGD at 3 ft/s, 35 MGD at 2 ft/s
G.
Maximum headloss at 50% blinding: 16 inches.
H.
Screen incline from vertical: 0 degrees
I.
Screen Overall Length: 47.28 feet
J.
Quantity of sluices: 1
K.
Quantity of compactors: 2
L.
Compactor capacity: 70 ft³/hr
M. Compactor rate of dewatering: 45% dry solids minimum
MECHANICAL SCREENING EQUIPMENT (BAR SCREEN) AND COMPACTOR
46 2152 - 4
HR Green, Inc.
Project No. 91140077
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
2.03 PERFORMANCE REQUIREMENTS
A.
The screen shall be capable of presenting a clean filtration surface to the influent stream at all
times during continuous operation. It shall be capable of intermittent operation. Operation shall
be variable through the use of a timer or through level control.
B.
The screening unit shall use a single drive unit for screening, conveying and cleaning of the
filter belt assembly.
C.
The screen shall include an integral sluice system that will extend to feed the Washing
Compactors.
D.
All routine maintenance shall be accomplished while the screening unit is still in the bottom of
the channel.
E.
The compactor shall produce washed compacted screenings to pass EPA's Paint Filter Test.
F.
The compactor shall be operated in a forward reverse equence, repeated four times
(adjustable) to ensure thorough cleaning of screenings.
G.
During peak flow, the compactor will automatically switch to operate only in forward direction.
2.04 BAR SCREEN MATERIALS AND CONSTRUCTION
A.
Screen to be mechanically cleaned; incline of bar screen shall be 0 degrees from vertical.
B.
Rakes shall approach channel invert from upstream side of screen and rake upward at
upstream face with tines between the bars.
C.
The screen shall be designed to either (a) pivot out of the channel, (b) be pulled out of the
channel. Rubber side flaps seal the screen to the channel walls. or (c) The Screen shall be
grouted in a wall recess and/or floor recess.
D.
Screenings shall be discharged on downstream side of screen to a common sluice as shown
on the drawings.
E.
The Screen Frame shall be supplied in flanged subassemblies complete with Drive Chains and
Rake Bars installed. The Flanged subassemblies shall be bolted together onsite during
installation.
F.
Framework of screen shall be constructed of Grade 304 stainless steel and cross section with a
minimum thickness 4mm (.1575” min). Various parts fastened by welding, riveting, or bolting
shall be braced as necessary to ensure a rigid structure. The side frames shall be minimum
4mm (.1575” min.) formed to a channel profile. The bottom thickness shall be 4mm (.1575”
min.). The frame shall have support beams with U-profile thickness of 4mm (.1575” min.) on
the front above the maximum water line. Wraparound stainless steel stiffeners with a thickness
of 4mm (.1575” min) formed to a channel profile shall be placed along the Screen Frame
above the maximum design water depth for rigidity. No braces, gussets or stiffeners shall be
inside the Screen Frame that will allow for screenings to collect.
G.
Bolts and nuts shall be of Grade 304 stainless steel.
H.
Anchor bolts shall be 3/4" Grade 304 stainless steel furnished by the contractor.
I.
Screen bars shall be constructed of Grade 304 stainless steel. The bar rack shall consist of
continuous taper section bars. The dimensions of the bars are 8mm x 4mm x 40mm (.31" x
.15" x 1.57") for bar spacing <= 3/8" [<= 10mm]. Round or rectangular bars shall not be used.
J.
Bars shall be supported from framework and be readily removable. The screen bars shall be
individually replaceable without any welding or cutting. Screen Bars that are welded to the
framework or welded into sub-assemblies shall not be allowed. Replacement screen bars shall
be available from the screen manufacturer.
MECHANICAL SCREENING EQUIPMENT (BAR SCREEN) AND COMPACTOR
46 2152 - 5
HR Green, Inc.
Project No. 91140077
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
K.
Bars shall be fastened to a dead plate that extends to the point of discharge. Bars shall extend
a minimum of 7.8" (200mm) above the maximum water level.
L.
The screen field shall be accurately constructed to give a clear opening of 0.25 inches between
the bars (minimum Bar Spacing: 3/16" [4.5mm]). There shall be no space wider than the
opening between the bars which would permit passage of larger solids through the screen.
M. Dead plate of Grade 304 stainless steel plate (thickness is 4mm (.1575” min.) shall extend to
the point of discharge. Dead plate shall be true and flat such that a close clearance between
the raking tines and the plate can be maintained during the cleaning cycle. The back side of
the dead plate shall be constructed to guarantee a maximum gap between rake bar and dead
plate, leading to the discharge chute without interruption.
N.
The raking tines shall have the tooth profile precision cut from a single continuous bar of
sufficient thickness and depth to insure adequate stiffness and strength to cope with the
specified duty cycle. The rakes shall run in guides on both sides to ensure engagement. The
rakes shall clean the bars from the upstream side of the screen. The rakes shall be fabricated
from stainless steel Grade 304. The rake material thickness shall be as follows:
1. Thickness of rake bar 12mm (.4724” min.)
2. Reinforcement profile 6mm (.2362” min.)
3. Side sheets
10mm (.3750” min.)
O.
The rake capacity shall be:
1. Chain with 125mm pitch:
a. Capacity/Rake Bar: 0.108 f3/ft [0.010m3/meter] Screen Field Width (SFW)
b. Total Screen Capacity at approx. 10 second cleaning interval (ft3/h) = 0.108 f3 x
SFW (ft) x 360
c. Total Screen Capacity at approx. 5-second cleaning interval (ft3/h) =0.108 f3 x SFW
(ft) x 720
2. Chain with 160 mm pitch:
a. Capacity/Rake Bar: 0.183 f3/ft [0.017m3/meter] Screen Field Width (SFW)
b. Total Screen Capacity at approx.10 second cleaning interval (ft3/h) = 0.183 f3 x
SFW (ft) x 360
c. Total Screen Capacity at approx. 5-second cleaning interval (ft3/h) =0.183 f3 x SFW
(ft) x 720
P.
S.S. rakes should have a shovel shape to prevent screenings from falling back to the channel.
Flat rakes without this feature are not permitted. Rake tines shall penetrate into the screen bar
spacing to insure that screenings are completely cleared during each lifting operation. Rake
tines are mechanically engaged into the screen bars. During each cleaning stroke, the raking
tines shall engage into the bottom of the bar screen grids at the channel invert. Drive chains,
chain guides, chain sprockets, bearings, and axles shall be fully replaceable without having to
remove the screen from the channel.
Q.
Screenings transported to the top of the screen shall be discharged positively by means of a
scraper mechanism to the discharge chute. The scraper mechanism shall be fitted with a
compression spring that allows the scraper to return to its resting position smoothly without any
shock. A scraper blade made of a combination of synthetic and other material shall be
provided on the scraper.
R.
The drive mechanism for the rakes shall incorporate a solid shaft constructed of stainless steel
Grade 304. The drive shaft shall be a solid shaft constructed of type 304 stainless steel.
MECHANICAL SCREENING EQUIPMENT (BAR SCREEN) AND COMPACTOR
46 2152 - 6
HR Green, Inc.
Project No. 91140077
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
S.
The Upper Sprocket shall be solid and made of type 304 stainless steel. The Upper Sprocket
shall have a (125 mm or 160 mm) pitch and a tooth width of minimum 27 mm. No split
sprockets shall be used.
1. Screen field width below 75" = 125 mm pitch
2. Screen field width above 75” = 160 mm pitch
3. Overall screen Length > 35’ = 160 mm pitch
T.
Upper Bearings shall be UCFX 4 - Bolt Flange Bearings or equal mounted in the Take-Up
Frame assembly. The bearings shall be grease-lubricated. The take up screw shall be an
Acme Lead Screw made of 18-8 stainless steel. No threaded rod shall be allowed.
U.
The Lower Sprocket shall be solid and made of type 304 stainless steel. The Lower Sprocket
shall have a (125 mm or 160 mm) pitch, a tooth width of minimum 27 mm and a bore of 70
mm. Split sprockets shall not be used.
V.
Bearings for lower submerged sprockets shall be of proven self-lubricating PE (Polyethylene)
material and be maintenance-free. A ceramic collar-type AHeadworks® Technox Zirconia
Diamond Ceramic shall be bonded onto the stub shaft. No metallic lower bearings or bushing
shall be allowed. No lower bearing requiring lubrication shall be allowed.
W. Chains shall be Heavy Duty roller type with a minimum weight of 6 lbs/ft and made of Grade
304 Stainless Steel of high tensile strength and resistance to corrosion. Chain rollers must be
Stainless Steel. The average ultimate strength of the chain shall be minimum 31,000 poundforce (137,500 Newtons). Chain Pins shall be a Stainless Steel and hardened.
X.
A Chain guide shall be securely fixed to the Screen frame for the full height of travel and shall
not protrude into the flow. The type of chain guide, thickness of material and size is an LProfile 2.65"/1.38"/0.19" (65/35/5mm), Material Grade 304 Stainless Steel. Replaceable wear
strips on chain guides located below the water level shall not be allowed.
Y.
The drive motor shall be maximum 5 HP. The motor shall be an inverter duty rated motor with
a 1.0 service factor, rated for continuous duty. The motor shall be controlled by a VFD
(variable frequency drive), rated for continuous operation. (Enclosure shall be rated applicable
for the specific installation environment.) The drive unit, including the reduction gearbox, shall
be directly shaft- mounted and shall be positioned to facilitate maintenance work.
Z.
A VFD (variable frequency drive) and a PLC (programmable logic controller) shall be provided.
VFD shall have solid state overload integral. On meeting a blockage, the device shall be able
to automatically reverse the direction of travel of the raking mechanism for an adjustable
distance and revert to the forward motion to try and clear the blockage. This reversing action
can occur a maximum of three times for any one obstruction. The device shall re-set
automatically if the blockage causing the initial overload condition is cleared; or, should the
blockage remain upon the completion of the fourth attempt, the screen shall be tripped and an
alarm generated. The reverse function shall be effective only in the low speed mode.
AA. The rake mechanism shall be capable of 2 cleaning speeds. Normal speed shall have an
approximate ten second cleaning interval and high speed shall have an approximate five
second cleaning interval. Screens which do not meet these performance criteria will not be
considered.
AB. A discharge chute (thickness of 4mm (.1575” min.) shall be provided for each screen to divert
screenings discharged from the screen to a washer/compactor. The discharge chute shall be
made of Grade 304 Stainless Steel. The discharge chute shall be mounted at an angle of 30
degrees. Panels are positioned on both sides to protect from splashing.
MECHANICAL SCREENING EQUIPMENT (BAR SCREEN) AND COMPACTOR
46 2152 - 7
HR Green, Inc.
Project No. 91140077
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
AC. Covers which are easily removable shall be provided for easy maintenance. Covers shall be
constructed of clear impact-resistant Polycarbonate material (thickness is 6mm (.25” min.) to
allow for visual observation during screen operation. Stainless steel covers shall not be used.
AD. Top Enclosed: The discharge chute and top of screen shall be fully enclosed. The top of the
frame shall be covered with a 3mm (11 gauge min.) type 304 stainless steel cover, bolted to
the front and back of the screen frame. The sides of the top cover shall be bent to overlap the
side frames.
AE. The discharge chute shall be enclosed from the top of the frame to the bottom of the chute.
The chute and chute enclosure shall be manufactured from a single piece of 4mm (.1575”
min.) type 304 stainless steel material. The enclosure shall include an access opening with
cover. The cover shall be easily removable for maintenance. The cover shall be made of
10mm (.375” min.) clear, impact resistant, polycarbonate to allow for visual inspection during
screen operation. The polycarbonate cover shall have stainless steel handles and be attached
to the chute enclosure by four (4) quick release clamps. The access opening shall be 18” long.
AF. Heat Tracing: The Debris Plate shall be Heat Traced, Insulated and Jacketed above the
Maximum Water Level or the base of the Debris Plate, whichever is higher, up to the top of the
Debris Plate where screenings are discharged and down to the base of the Discharge Chute.
Heat Tracing shall be suitable for Class 1, Division 1 areas. Insulation shall be approximately
1” thick. Jacketing shall be of 304SS material. The surface where Heat Tracing is installed
shall be energized by a Thermostat that turns on the Heat Tracing when the outside air
temperature reaches 40 degrees F. Heat Tape shall extend outside the pan for Field
Termination in an enclosure provided by Headworks Inc. that houses Contactors, Thermostat,
Terminal Strips, etc. and is, in turn, wired to the Main Control Panel for the Bar Screen.
AG. Pivot device: The Screen shall be equipped with a Pivot Stand that allows the Screen to pivot
out of the channel for maintenance purposes. Lifting is achieved by means of cables mounted
on the lifting eyes on the lower end of the screen. The lifting device is not included.
2.05 SCREEN CONTROL PANEL
A.
Two Screens and two Compactors shall be controlled from one vendor-furnished Control Panel
with interface signals to OWNER's PLC. Provide control sequence for reference and
integration into OWNER's existing control system.
B.
Coordinate Control Panel operation with Section 46 2153 Container Handling System Control
Panel and Section 43 2100 Packaged Skid Mounted Water Booster Pumping System.
C.
Provide detailed operating description for all equipment supplied within this Section.
Operating description shall reference names, device tags, and instrument tags as shown on
applicable Process and Instrumentation Diagrams (P&IDs).
D.
Intent is to provide sufficient detail to allow programming of OWNER's PLC in order to operate
as recommended by screen manufacturer. OWNER's PLC and its programming are provided
by OWNER.
E.
Describe the following:
1. Usage of all control signals monitored and controlled by OWNER's PLC.
2. Detailed sequence of operation for all components included in this Section.
3. Recommended initial control and alarm setpoints.
4. Scaling and setpoint information for all control signals associated with equipment
included in this Section.
F.
Loss of Motion Sensor
1. Provide zero motion speed switches located on end of driven shafts opposite gear
reducers to be hardwired to associated Screen or Compactor motor drives.
MECHANICAL SCREENING EQUIPMENT (BAR SCREEN) AND COMPACTOR
46 2152 - 8
HR Green, Inc.
Project No. 91140077
2.
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
NEMA 7, 120 VAC, 5 amps, isolated contacts, 10 second start delay.
G.
Provide and coordinate current sensing relay from VFD. Coordinte with Contractor to
configure and adjust current sensing relay after installation for proper operation as part of the
start-up services.
H.
Control Panel enclosure shall be sized as required to house equipment and shall be suitable
for wall mounting or mounting to strut-type supports. Enclosure shall be rated NEMA
.
(Standard - NEMA 4 Painted)
I.
Each Bar Screen motor shall be controlled by individual Danfoss FC200 variable frequency
drive (VFD), sized as required for bar screen motor horsepower and suitable for use with
variable torque loads. VFD shall include discrete and analog input and outputs as required by
control panel manufacturer. No bypass starters will be required.
J.
The VFD(s) shall be controlled by an Allen Bradley MicroLogix 1200 PLC (Programmable
Logic Controller). The PLC shall be used to control the VFD to operate the screen at two (2)
speeds and through the automatic reversing/cleaning shuttle sequence. The PLC shall include
discrete and analog inputs and outputs as required.
K.
Each screen shall be controlled in synchronization with ultrasonic level sensors. Upon
reaching a predetermined differential set point the screen shall begin operation in low or
normal speed and shall shut down after a predetermined time if the differential level is less
than the predetermined set point. Upon reaching a second higher predetermined differential
set point the screen shall operate in high speed.
L.
When an overcurrent is detected the screen shall automatically stop and run in reverse for a
predetermined time. The screen shall then stop and return to forward. If the cause of the
overload is cleared the screen shall automatically reset in normal operation. If an overload is
again detected the reversing cycle is repeated up to four (4) times prior to initiating an alarm
contact. The use of clutches, friction disks or similar devices for overload protection are not
acceptable
M. The Control Panel shall have a Red Lion G303 OIT (Operator Interface Terminal) to allow
push button adjustment of counter values, timers and level set points without connecting to the
PLC. The OIT shall be rated NEMA 4X and provide fault and troubleshooting information.
N.
Door mounted NEMA 4X indicating lights shall be provided to indicate running and alarm
status of the bar screen. Legend plates and a door mounted Alarm Rest push button shall also
be provided.
O.
Ultrasonic level transmitters for channel level:
1. (1) Upstream of Screen No. 1
2. (1) Downstream of Screen No. 1
3. (1) Upstream of Screen No. 2
4. (1) Downstream of Screen No. 2
5. Output: 4-20 mA DC.
P.
A separate Local Operator Station rated NEMA 7 shall be provided. The local panel shall
include Hand/Off/Automatic and Forward/Off/Reverse 3-position switches and an Emergency
Stop mushroom pushbutton.
2.06 SCREEN SEQUENCE OF OPERATION - 2-SPEED OPERATION
Main Panel
Local Panel
Result
Action when
Blockage Occurs
MECHANICAL SCREENING EQUIPMENT (BAR SCREEN) AND COMPACTOR
46 2152 - 9
Comments
HR Green, Inc.
Project No. 91140077
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
ON
Auto & Any
Position
Screen starts in
LSP when the
rising water
differential
reaches set level
(Level 1)
ON
Auto & Any
Position
Screen starts in
HSP when the
rising water
differential
reaches set level
(Level 2).
ON
Auto & Any
Position
Exercise run
ON
Manual &
Forward
Screen operates
forward in LSP
ON
Manual &
Reverse
Screen operates
in reverse LSP
ON
E-Stop Engaged
ON
Off & Any
Position
Hand & Off
Screen stops
immediately
Screen will not
operate
Screen will not
operate
Screen will not
operate
ON
OFF
Any Position &
Any Position
Screen performs
cleaning shuttle
up to 4 times. If
no success,
screen stops and
initiates alarm
contact.
Screen performs
cleaning shuttle
up to 4 times. If
no success,
screen stops and
initiates alarm
contact.
Screen performs
cleaning shuttle
up to 4 times. If
not success,
screen stops and
initiates alarm
signal.
Screen stops
immediately. No
cleaning shuttle.
Screen stops
immediately. No
cleaning shuttle.
N/A
LSP - Low
Speed Mode.
Approx 10-sec
cleaning interval
HSP - High
Speed Mode.
Approx 5-sec
cleaning interval.
X min in LSP,
every Y min. (X
& Y are operator
adjustable)
N/A
N/A
N/A
2.07 SCREEN SPARE PARTS
A.
The following minimum recommended spare parts shall be provided for mechanically cleaned
screens:
1. Two (2) rake bars.
2. Five (5) feet of chain.
3. One (1) pair wiper arm wear pads.
4. Two (2) lower bearing assemblies.
2.08 SLUICE
A.
The screenings sluice will collect screenings and wash water from the discharge hopper of the
screen and transfer them by gravity directly into the Washing Compactors washing trough.
Mechanically driven conveyors are not acceptable.
B.
The sluice will be manufactured from stainless steel. It shall comprise of U-shaped lengths of
trough that will be (flange connected/welded) to the desired overall length.
MECHANICAL SCREENING EQUIPMENT (BAR SCREEN) AND COMPACTOR
46 2152 - 10
HR Green, Inc.
Project No. 91140077
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
C.
A change in direction will be achieved using long swept bends that will prevent blockages from
occurring.
D.
The sluice will be supplied with a Y-branch that will divert the screenings and wash water from
either or both screens to either or both Washing Compactors. The sluice system must provide
complete redundancy so that either screen can feed either Washing Compactor.
E.
The diversion between Washing Compactors will be provided by electrically actuated gates
that will be installed into the sluice. These gates will be controlled by the main control panel
that will provide automatically change the duty Washing Compactor based on run time.
F.
Covers will be a lightweight, no more than 6 feet long and easily removed by a single operator.
G.
All stainless steel support legs will be provided by the Manufacturer.
2.09 CONVEYOR COMPACTOR
A.
SHAFTED SCREW ASSEMBLY
1. The Shafted Screw Assembly shall consist of a spiral welded to mechanical tubing. The
mechanical tubing shall be welded to an end shaft.
2. The Shafted Screw shall be manufactured from one (1) concentric flight formed from
carbon plate and welded to form a single spiral.
3. The diameter of the Shafted Screw assembly shall be 9 inches [230 mm] in diameter and
shall be constant over the length of the assembly.
4. The Shafted Screw shall have one (1) abrasive resistant Brush Assembly. The Brush
shall be Nylon and tack welded to the screw.
5. The Pitch of the screw shall reduce to 66% of the screw outer diameter in the Press Zone
area.
6. The final Quarter-Pitch of the Shafted Screw shall be Hard Faced.
B.
SIEVE ZONE
1. The Sieve Zone shall tubular in design with an integral collection pan and an Inlet Chute
to accept screenings from the screen.
2. The Sieve Zone shall be manufactured from minimum 11 gauge Grade 304 Stainless
Steel and minimum 14 gauge perforated Grade 304 Stainless Steel. The perforations
shall be 1/8”.
3. The Sieve Zone shall include Inlet Hopper(s) to direct screenings from the screen
4. into the Shafted Screw Conveyor/Compactor. The Inlet Hoppers shall be constructed of
14 gauge [2 mm] Grade 304 Stainless Steel and shall be bolted to the Transport Zone of
the U-Trough.
C.
TRANSPORT ZONE
1. The Transport Zone shall be tubular in design and constructed of minimum 11 gauge
Grade 304 Stainless Steel.
2. The Transport Zone shall be fitted with Wear Bars constructed of minimum 3/8” thick
Carbon Steel. The Wear Bars shall be bolted from the outside of the Transport Zone.
Welded Wear Bars shall not be allowed.
D.
WASH ZONE
1. The Wash Zone shall tubular in design with an integral collection pan located directly
under the zone. The Wash Zone shall wash screenings and reduce the organic content.
2. The Wash Zone shall be constructed of minimum 11 gauge perforated Grade 304
Stainless Steel plate and minimum 14 gauge Grade 304 Stainless Steel plate. The
perforations shall be 1/8”.
3. The Wash Zone shall consist of a spray header fitted with two (2) spray nozzles to
provide cleaning of screenings before compacting. The Wash Zone supply water shall be
MECHANICAL SCREENING EQUIPMENT (BAR SCREEN) AND COMPACTOR
46 2152 - 11
HR Green, Inc.
Project No. 91140077
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
approximately 10 GPM at 40psi. The Wash Zone shall include a solenoid valve to control
the flow of water into the Wash Zone. The Wash Zone shall include a solenoid valve,
shipped loose to control the flow of water. All interconnecting piping, valves, etc. between
the water source, the Wash Zone and the solenoid valve shall be supplied and installed
by the Installing Contractor. Note: If the water source is a plant’s final effluent, the
contractor shall also provide a Y-strainer with mesh size 40, equivalent to 0.47mm (470
microns).
E.
PRESS ZONE
1. The Press Zone design shall tubular in design with an integral collection pan located
directly under the zone.
2. The Press Zone shall be constructed of minimum 11 gauge Grade 304 Stainless Steel.
F.
COLLECTION PAN
1. The Collection Pan design shall be a U-Tough design located directly under the Sieve,
Wash and Press Zones.
2. The Collection Pan shall be constructed of minimum 14 gauges Grade 304 Stainless
Steel and attached to the compactor body with quick release clamps.
3. Periodically, water shall be introduced into the collection pan to flush organics and other
fines to the drain. The Collection Pan water supply shall be approximately 10 GPM at 40
psi. The flush water shall run five (5) seconds out of every twenty (20) seconds and be
field adjustable. The flush water shall flow down to the base of the collection pan to the 3”
diameter drain outlet.
4. The Wash Zone shall include a solenoid valve, shipped loose to control the flow of water.
All interconnecting piping, valves, etc. between the water source, the Wash Zone and the
solenoid valve shall be supplied and installed by the Installing Contractor.
G.
DISCHARGE TUBE
1. The Discharge Tube shall be cylindrical and constructed of minimum 14 gauge Grade
304 Stainless Steel. The discharge tube shall increase in diameter over its length in order
to reduce the potential for plugging.
2. The Discharge Tube shall direct and discharge screenings at a clear discharge height that
allows for placement of a receptacle (provided by others) to collect the screenings.
3. The Drain Pan and Discharge Tube shall be Heat Traced, Insulated, and Jacketed. Heat
cable shall extend outside the jacket of each area that is heat traced. One (1) NEMA 4X
enclosure that houses the Contactor, Thermostat and Terminal Strip shall be mounted
near the compactor. Both points where Heat Tracing is installed shall be energized by the
one (1) Thermostat that shall turn on the Heat Tracing when the outside air temperature
reaches 40 degrees F.
4. Wiring from each area that is heat traced to the Thermostat enclosure and from the
Thermostat enclosure to the main control panel shall be by the installing contractor.
Mounting of the Thermostat enclosure shall be by the installing contractor.
2.10 CONVEYOR DRIVE SYSTEM
A.
Electric Motor. The Electric Motor shall be maximum 5 HP, 230/460V, 3 Phase, 60 Hz, TEFC,
rated for the required Electrical Area Classification.
B.
Gear Reducer. The design shall utilize a shaft mounted parallel helical type gear reducer
driven by a direct coupled motor. The reducer shall have a cast iron housing with an output
speed of 14 rpm. The service factor shall be minimum 1.0. (A shaft mounted worm gear type
reducer shall be used for vertical mount drives)
MECHANICAL SCREENING EQUIPMENT (BAR SCREEN) AND COMPACTOR
46 2152 - 12
HR Green, Inc.
Project No. 91140077
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
2.11 CONVEYOR CONTROLS
A.
The screw compactor control planel encolusre shall be sized as required to house the required
components and shall be suitable for wall mounting or mounting to strut-type supports. The
enclosure shall be rated NEMA 4. The control panel shall be pre-wired and tested, requiring
only wall mounting and connection to external wiring by the electrical contractor in the field.
The panel shall be located in a non-classified area where no corrosive gasses are present.
B.
The Screw Compactor Control Panel shall be controlled in synchronization with the upstream
screening equipment. The Screw Compactor shall begin operation whenever the screening
equipment begins operation and shall continue operation for a predetermined period of time
after the upstream equipment stops.
C.
The Control Panel shall have front panel mounted NEMA 4X pilot lights indicating, Power,
Fault, Forward and Reverse.
D.
The Control Panel shall include a disconnect, motor starter, control power transformer,
adjustable timer, panel heater Elapsed Time Meter and other components to allow for
sequencing the system.
E.
Output Dry Contacts shall be provided for Fault, Forward and Reverse.
F.
The Control Panel shall be fitted with an adjustable Current Switch. Upon a Fault the
equipment shall shut down and an alarm contact shall be initiated.
G.
Local Operator Station shall be provided in a NEMA4Xpanel. The Local Operator Station shall
include an Automatic/Local switch, Forward/Reverse Switch and an Emergency Stop.
H.
Emergency Shutdown Pull Cord and Switch: An Emergency Pull Cord and Safety Switch shall
be provided. The Pull Cord shall be mounted to the compactor over its full length and be
attached to the Safety Switch. The Safety Switch shall immediately stop the system when the
cord is pulled and the switch is actuated.
I.
Rotation Sensor: A Rotation Sensor shall be provided to detect the Screw rotation. The
sensor shall be mounted towards the discharge end of the compactor and away from the drive.
When the sensor records zero movement of the screw the system shall immediately stop and
initiate an alarm contact.
2.12 CONVEYOR ANCHOR BOLTS
A.
All anchor bolts, nuts and washers shall be ¾” diameter 304 Stainless Steel. The anchor bolts
shall be supplied by the installing contractor.
2.13 CONVEYOR SPARE PARTS
A.
Spare parts shall be packaged with labels bearing the description and quantity of the contents.
Furnish the following spare parts for each shafted screw conveyor/compactor:
B.
Recommended for one (1) year operation:
1. One (1) Brush
2. One (1) set of Wear Bars.
C.
Recommended for five (5) years operation:
1. One (1) Thrust Bearing
2. One (1) set Shaft Seals
3. One (1) sets of Wear Bars
4. One (1) Shafted Screw
MECHANICAL SCREENING EQUIPMENT (BAR SCREEN) AND COMPACTOR
46 2152 - 13
HR Green, Inc.
Project No. 91140077
North Shore Water Reclamation District
Gurnee Bar Screen Replacement
PART 3 - EXECUTION
3.01 INSTALLATION
A.
Install in accordance with manufacturer's instructions and Section 46 0500, as indicated on
drawings, by qualified craftsmen.
B.
Location, orientation, and quantities as indicated on drawings.
C.
Include all required related items necessary for a complete installation.
D.
Coordinate for compatibility of manufacturer's shop coating and final finish.
E.
Support and anchor as indicated on drawings.
F.
Start up in presence of manufacturer's service representative.
G.
Test power draw and motor vibration during initial operation with manufacturer's service
representative.
H.
The Contractor is responsible to daily clean the manual bar rack and carry the screenings to
the top floor during the entire period (including weekends and legal holidays) between the
existing mechanical bar screen removal and the new bar screen start-up and operation. The
screenings shall be disposed to the existing compactor, which shall be available for service at
all times required to dispose the manually removed screenings.
3.02 FIELD QUALITY CONTROL
A.
The unit will be factory operated and inspected prior to shipment. The Engineer and/or Owner
may, at their option and own expense, witness the factory test.
END OF SECTION 46 2152
MECHANICAL SCREENING EQUIPMENT (BAR SCREEN) AND COMPACTOR
46 2152 - 14
MEETING MINUTES
Date:
Time:
Location:
Project:
HR Green Job No.:
Present:
July 23, 2015
11:00 a.m.
14770 W Wm. Koepsel Drive, Gurnee, IL 60031
Gurnee Water Reclamation Facility Bar Screen Replacement & Pump Station (PS-5)
Improvements
91140077
See Attached Sign In Sheet
Purpose:
Pre-Bid Meeting/Site Walkthrough
ITEM
NO.
1.
ITEM
ACTION
Attendees Signed In and Introductions were made.
Info.
Schedule.
Info

Bid opening at 11:00 a.m. on August 5, 2015.

Bids will be kept for 60 days at most and bid documents
(performance bond, etc.) need to be submitted 10 days after
Board approval.

Project length is 240 days to substantial completion and 300
days to final completion.

Submit questions as soon as possible. Emailing the questions is
fine.

Project work will be driven by equipment delivery times.
2.
Bid Information.
 Bid Form and Appendix 1; Bid Bond, and Addenda
acknowledged as part of the bid package.
 NSSD has right to reject bids for any reason.
 Wage rates used will be current to time of work being
performed.
3.
Shut Downs, Sequencing, and Coordination with NSSD

4.
Shut downs need to be coordinated with facility operations at
least 2 weeks in advanced.
Staging/Storage

Minimal staging will be required.

Equipment staging to be coordinated with Owner.

Inside storage is minimal and needs to be coordinated with the
Join the Centennial Celebration at HRGreen.com
Phone 815.385.1778 Fax 815.385.1781 Toll Free 800.728.7805
420 N. Front Street, Suite 100, McHenry, IL 60050
Clavey Road STP Scum Pump Improvements
Meeting Minutes
HR Green Job No.: 86130389
September 17, 2014
Page 2 of 2
ITEM
NO.
ITEM
ACTION
Owner.
5.
Addenda

6.
There are no addenda at this time.
Questions/Discussion

The pre-bid meeting was not mandatory.

There is no owner supplied items.

There will be another project on site, but should not interfere
with construction of the bar screen replacement project.
These minutes are assumed correct unless the author is notified within seven calendar days of publication.
Distribution: All Present
_________________________________
By: Mark Hardie, P.E.
Project Manager
Date of Publication: July 28, 2015
Attachments:
Sign in Sheet
Meeting Agenda
Download PDF