Bettis RPE-Series Safety Guide

Bettis RPE-Series Safety Guide
Safety Guide
DOC.SG.BRPE.EN Rev. 1
November 2015
BETTIS RPE Series
Rack and Pinion Pneumatic Actuators
November 2015
Safety Guide
ANSI 534.6 Safety messages
WARNING Indicates a hazardous situation that, if not avoided, could result in death or serious injury.
CAUTION Indicates a hazardous situation that, if not avoided, could result in minor or moderate injury.
Note/Important
Indicates information considered important, but not hazard-related
Contents
1. Safety Instructions.......................................3
2. In General....................................................3
3. BETTIS RPE series actuators..........................5
2
4. Actuator accessories....................................8
5. Instructions for use in (potential)
explosive area’s............................................8
November 2015
Safety Guide
1. Safety Instructions
Please read these safety warnings, cautions, and instructions carefully before using the
product.
These instructions cannot cover every installation and situation. Do not install, operate,
or maintain this product without being fully trained and qualified in valve, actuator, and
accessory installation, operation, and maintenance.
To avoid personal injury or property damage, it is important to carefully read,
understand, and follow all of the contents of the associated instruction manual,
including all safety cautions and warnings. If you have any questions concerning
installation, or use of this product, contact your Emerson Process Management sales
office before proceeding.
2. In General
2.1 General intend use
The BETTIS™ RPE Rack and Pinion actuators are intended for the automation and
operation of quarter-turn valves like Butterfly-, Ball- and Plug valves.
Rack and Pinion actuators can also be used to operate venting louvers or any other
quarter-turn applications.
This product was intended for a specific range of service conditions: pressure, ambient
temperature, operating media, and possibly other specifications. Do not expose the
product to service conditions or variables other than those for which the product was
intended.
If you are not sure what these conditions or variables are, contact your Emerson Process
Management sales office for assistance. Provide the product type, size, serial number
and all other pertinent information that you have available.
3
Safety Guide
November 2015
2.2 Inspection and Maintenance Schedules
The Bettis RPE Rack and Pinion actuators must be inspected periodically and
maintained as needed. Refer to the maintenance section of manual DOC.IOM.BRPE.EN
for more detailed information.
The schedule for inspection can only be determined based on the severity of your
service conditions. Your installation might also be subject to inspection schedules
set by applicable governmental codes and regulations, industry standards, company
standards, or plant standards.
In order to avoid increasing dust explosion risk, periodically clean dust deposits from all
equipment.
When equipment is installed in a hazardous area location (potentially explosive
atmosphere), prevent sparks by proper tool selection and avoiding other types of
impact energy.
Proper care must be taken to avoid generation of static electricity on the nonconductive external surfaces of the equipment (e.g. rubbing of surfaces, etc.). The
actuator's surface temperature is dependent upon process operating conditions.
2.3 Parts Ordering
Whenever ordering parts for older products, always specify the type, size and serial
number of the product and provide all other pertinent information that you can,
such as part material, age of the product, and general service conditions. If you have
reconfigured the product since it was originally purchased, include that information
with your request.
WARNING - USE GENUINE PARTS
Use only genuine replacement parts. Components that are not supplied by Emerson Process
Management should not, under any circumstances, be used in any BETTIS product. Use of
components not supplied by Emerson Process Management may void your warranty, might
adversely affect the performance of the product, and could cause personal injury and property
damage.
4
November 2015
Safety Guide
3. Bettis M series actuators
These safety instructions are limited to Bettis RPE series actuators which are operating
using air or inert gas. If the application requires use of a flammable or hazardous gas,
you must contact your Emerson Process Management sales office for assistance.
3.1 Installation
WARNING - DO NOT EXCEED SPECIFICATIONS
To avoid personal injury and property damage caused by bursting of parts and to avoid parts
damage, malfunction of control valve, or loss of control of the process caused by excessive
pressure, do not exceed the maximum pressures or temperatures for this actuator, as given in
the applicable product literature or on the nameplate. Use pressure-limiting or pressure-relieving
devices to prevent the actuator pressure from exceeding specified limits. If you cannot determine
the limits for this product, contact your Emerson Process Management sales office before
proceeding.
„„ To avoid personal injury, always wear protective gloves, clothing, and eyewear when
performing any installation operations.
„„ If hoisting the actuator, use a nylon sling to protect the surfaces. Carefully position the sling
to prevent damage to the actuator tubing and any accessories. Also, take care to prevent
people from being injured in case the hoist or rigging might slip. Be sure to use adequately
sized hoists and chains or slings to handle the assembly. If an actuator/valve assembly should
be lifted, it is strongly recommended to connect the nylon lifting slings in such way that the
actuator and valve is supported.
„„ Check with your process or safety engineer for any additional measures that must be taken to
protect against process media.
„„ If installing into an existing application, also refer to the WARNING in the Maintenance section.
„„ Do not connect a pressure vessel, to the Actuator, with unrestricted media.
„„ Do not exceed the MAXIMUM stated operating pressures.
„„ Applying pressure directly to the actuator can turn the actuator's shaft / Valve stem.
„„ Applying a control signal to the actuator's solenoid can turn the Actuator / Valve assembly.
WARNING - MOVING PARTS
Stay away from moving parts to prevent serious injuries. When test cycling the actuator and valve
assembly by applying pressure to the A or B port, be aware that there are moving parts like pinion
top, actuator to valve coupling and the valve blade, -ball, -plug, etc.
Isolate the piping system on which an actuator-valve assembly is installed, when removing
this assembly, and relieve any media pressure that may be trapped in the valve cavities before
removing the actuator for maintenance.
5
November 2015
Safety Guide
3.2 Operation
WARNING - MOVING PARTS
When rotating the actuator stem or shaft with loading pressure applied, use caution to keep
hands and tools out of the actuator travel path. Personal injury and property damage is possible if
something is caught between the actuator stem and other control valve assembly parts.
3.2.1 Operating media.
1. Use clean, dry or lubricated air or inert gas.
2. Maximum Operating Pressure (MOP) = 8 barg / 116 psig
MOP is the pressure required to produce the maximum rated torque at the break
position for all actuators.
Pressure should not exceed MOP during valve rotation.
MOP should be the maximum pressure regulator setting.
WARNING - DO NOT EXCEED SPECIFICATIONS
It can be assured that the housing will not rupture or burst when applying 10 bar of pressure but
the cycle function cannot be guaranteed as it totally depends on the time span to which actuator is
subjected at 10 bar and the frequency at which these pressure peaks occurs. Every time this peak
occurs will, for sure, have a significant negative effect on the life expectancy of the actuator.
3. Refer to below table on applications where the spring stroke of spring-return
actuators is pneumatically operated.
Table 3.1 Maximum pressure on spring stroke of spring-return actuators
Spring set
Maximum pressure on spring
stroke of spring-return actuators
N=10
7 barg / 101.5 psig
N=20
6 barg / 87.0 psig
N=30
5 barg / 72.5 psig
N=40
4 barg / 58.0 psig
N=50
3 barg / 43.5 psig
N=60
2 barg / 29.0 psig
4. Dew point at least 10K below ambient temperature.
5. For subzero applications take appropriate measures.
6. Mentioned pressure levels are "gauge pressures." Gauge pressure is equal to
absolute pressure minus atmospheric pressure.
6
November 2015
Safety Guide
3.2.2 Operating Temperature range
1. Using standard seals and greases the operating temperature range is -20°C to
+ 80°C (-4°F to +176°F) as is indicated on the product label.
2. Other medias and temperatures may be used but consult your local Emerson
Process Management sales office for confirmation as to suitability.
3.3 Maintenance
Before mounting or (dis) assembling the actuator consult the relevant sections of
the installation, operation and maintenance manual for more detailed maintenance
information.
WARNING
Avoid personal injury or property damage from sudden release of process pressure or uncontrolled
movement of parts. Before performing any maintenance operations:
„„ Always wear protective gloves, clothing, and eyewear.
„„ Disconnect any operating lines providing air pressure, electric power, or a control signal to the
actuator. Be sure the actuator cannot suddenly open or close the valve.
„„ Do not remove the actuator from the valve while the valve is still pressurized.
„„ Vent any pneumatic pressure from the actuator and relieve any actuator spring precompression.
„„ Use lock-out procedures to be sure that the above measures stay in effect while you work on
the equipment.
„„ Never apply pressure to a partially assembled actuator unless all pressure-retaining parts have
been installed properly.
„„ Check with your process or safety engineer for any additional measures that must be taken to
protect against process media.
„„ Do not remove the Pistons from the Actuator Body by using air pressure when the End Caps
have been removed.
CAUTION - PRESSURIZED ACTUATOR
„„
Do not turn out the travel stops completely when the actuator is pressurized. When adjusting
the travel stops and the actuator is still pressurized, the travel stops can be “shot” away when
completely turned out.
7
Safety Guide
November 2015
CAUTION - SPRING FORCE
Spring-return actuators contain springs in a compressed state. Follow these instructions to
release the spring force safely. Normally the end caps of spring return actuators should be free
of the spring load after 10 full turns (crosswise relaxing) of the end cap screws.
If there is still spring load on the end cap, this might indicate a broken spring cartridge. Stop
this disassembly procedure immediately. Continuing might cause the end cap to be “shot”
away causing serious injury.
Refer to Appendix A of manual DOC.IOM.BRPE.EN for instructions to safely remove the spring
load before disassembling the end cap from the spring-return actuator.
„„ A spring-return actuator mounted on a valve, which is stuck in mid stroke, contains a high
spring load which will cause a sudden rotation during disassembly of the actuator versus the
valve or valve bracket. This can cause serious injury to personnel or damage to material.
Refer to Appendix A of manual DOC.IOM.BRPE.EN for instructions to safely remove the spring
load before disassembling the actuator form a valve, which is stuck in mid stroke.
„„
4. Actuator accessories
The actuator may be equipped with components for control and/or feedback. Check
the instructions of these components for installation, operation and maintenance
instructions.
5. Instructions for use in (potential) explosive area’s.
5.1 Intended use
The Bettis RPE series pneumatic actuators are intended for use in areas in which
explosive atmospheres caused by mixtures of air and gases, vapours, mists or by air/
dusts are likely to occur. Therefore it may be used in classified Zones 1, 2 (Gasses) and/
or 21, 22 (Dust).
5.2 Safety instructions
1. Assembly, disassembly and maintenance, is only allowed at the actuator, when, at
the time of the activity, there is not an explosive mixture.
2. Prevent entry of explosive mixtures into the actuator. We suggest utilizing a
solenoid with a "breather" function on spring-return actuators when used in
potentially explosive atmospheres.
3. This plastic position indicator is approved for use in potentially explosive (Ex) gas
group IIB areas. In areas where Ex gas group IIC requirements apply, do not use the
plastic position indicator.
4. In order to avoid increasing dust explosion risk, periodically clean dust deposits
from all equipment.
8
November 2015
Safety Guide
5. When equipment is installed in a hazardous area location (potentially explosive
atmosphere), prevent sparks by proper tool selection and avoiding other types of
impact energy.
6. Rack and pinion actuators do not have an inherent ignition source due to electrostatic discharge, but explosion hazard may be present due to the discharge of static
electricity from other valve assembly components.
—— To avoid personal injury or property damage, make sure that the valve is
grounded to the pipeline before placing the valve assembly into service.
—— Use and maintain alternate shaft-to-valve body bonding, such as a shaft-tobody bonding strap assembly.
7. Proper care must be taken to avoid generation of static electricity on the nonconductive external surfaces of the equipment (e.g. rubbing of surfaces, etc.).
8. The paint protection must not exceed 200 μm if the actuator is used in a group IIC
atmosphere. For group IIA or IIB atmospheres the paint protection must not exceed
a thickness of 2 mm (0.08").
9. Prevent entry of explosive mixtures into the actuator. We suggest utilizing a
solenoid with a “breather” function on spring return actuators when used in
potentially explosive atmospheres.
5.3 Maximum temperatures
WARNING - SURFACE TEMPERATURE
The actuators surface temperature is dependent upon process operating conditions. Personal
injury or property damage, caused by fire or explosion, can result if the actuator's surface
temperature exceeds the acceptable temperature for the hazardous area classification. To avoid
an increase of instrumentation and/or accessory surface temperature due to process operating
conditions, ensure adequate ventilation, shielding, or insulation of these actuator components
installed in a potentially hazardous or explosive atmosphere.
Table 5.1 Temperature range for (potential) explosive area’s
Temperature
Temperature
class
TX (surface
temperature)
-20°C(-4°F)…75°C(167°F)
T6
T85°C (185°F)
-20°C(-4°F)…80°C(176°F)
T5
T90°C (194°F)
-20°C(-4°F)…90°C(194°F)
T5
T100°C (212°F)
-20°C(-4°F)…120°C(248°F)
T4
T130°C (266°F)
-40°C(-40°F)…75°C(167°F)
T4
T85°C (185°F)
Ambient range
Valid for actuator model
0 = Standard Temperature
1 = High Temperature
2 = Low Temperature
The specified values are valid with the following conditions:
Maximum cycle frequency of the actuator is 1Hz at a maximum of 50 cycles per hour and at maximum load.
9
ROC no 11020
Rev. 1
Legal representative entity for the European Union:
Emerson Process Management, Valve Automation
Asveldweg 11, 7556 BR Hengelo Netherlands
mentioned European Directives.
Product Description :
• Bettis RPE Series - Pneumatic Actuator
Double Acting and Spring Return Actuators
• Double acting types:
Type: RPED 12, 25, 40, 65, 100, 150, 200, 350 or 600
• Spring Return types:
Type: RPES 12, 25, 40, 65, 100, 150, 200, 350 or 600
Product Variations:
• Product variations of the above mentioned types are still covered by the listed directives and are CE marked.
Serial Number:
•
EC Declaration of Conformity
Issued in accordance with the
Pressure Equipment Directive
(PED) 97/23/EC
ATEX Directive 94/9/EC
Pressure Equipment Directive (PED) 97/23/EC
• For Gas Group 2 (see Safety Guide DOC.SG.BE.1 section "Operating Media") Bettis RPE Series pneumatic
actuators are excluded from the requirements of the
Pressure Equipment Directive 97/23/EC based on
article 1, point 3.6 of the directive.
neering to check compatibility of pressure media with
the actuator.
• The below listed limited range of Bettis RPE Series
actuator sizes are rated “Sound-Engineering-Practice”
or Module A (Internal production control) and are
available on request for use with Gas Group 1 media.
• Double acting types:
RPED 12, 25, 40, 65, 100, 150, 200, 350 or 600
• Single acting types:
RPES 12, 25, 40, 65, 100, 150, 200, 350 or 600
EC Declaration of Incorporation of partly
completed machinery
Issued in accordance with the
Machinery Directive
2006/42/EC, Appendix IIb
Essential requirements applied and complied with:
• 1.1.2, 1.1.3, 1.1.5, 1.3.2, 1.3.4, 1.3.7, 1.5.2, 1.5.3,
1.5.4, 1.5.7, 1.6.1, 1.7.1, 1.7.3, 1.7.4.
• Technical documentation is drafted in compliance
with Appendix VII, section B.
• Before the actuator is put into operation, the machine
into or onto which the actuator will be installed, must
comply with the stipulations of the machinery directive.
• The relevant information concerning the machine
or part will be available in the event of a motivated
request from national authorities.
Applicable standards:
• EN ISO 12100 : 2010
ATEX Directive 94/9/EC
ATEX Marking:
•
II 2G c IIC TX
II 3D c IIIC TX
•
see Safety Guide: DOC.SG.BE.1 chapter 5, instructions
for use in potentially explosive atmospheres.
Applicable standards:
• EN 13463-1:2009
EN 13463-5:2011
Signed:
Name:
Position:
UK
Date:
Place:
_____________________________
S. Ooi
Vice President, Rack & Pinion SBU
& Global Marcom
Emerson Process Management,
Valve Automation Group
2015-09-25
Houston TX, U.S.A.
World Area Configuration Centers (WACC) offer
sales support, service, inventory and commissioning
to our global customers. Choose the WACC or sales
office nearest you:
NORTH & SOUTH AMERICA
MIDDLE EAST & AFRICA
19200 Northwest Freeway
Houston, TX 77065
T +1 281 477 4100
F +1 281 477 2809
P. O. Box 17033
Dubai
United Arab Emirates
T +971 4 811 8100
F +971 4 886 5465
Av. Hollingsworth,
325, Iporanga Sorocaba,
SP 18087-105
Brazil
T +55 15 3238 3788
F +55 15 3228 3300
ASIA PACIFIC
No. 9 Gul Road
#01-02 Singapore 629361
T +65 6501 4600
F +65 6268 0028
No.1 Lai Yuan Road
Wuqing Development Area
Tianjin 301700
P.R. China
T +86 22 8212 3300
F +86 22 8212 3308
P. O. Box 10305
Jubail 31961
Saudi Arabia
T +966 3 340 8650
F +966 3 340 8790
24 Angus Crescent
Longmeadow Business Estate
East P.O. Box 6908; Greenstone;
1616 Modderfontein, Extension 5
South Africa
T +27 11 451 3700
F +27 11 451 3800
EUROPE
Asveldweg 11
7556 BR Hengelo (O)
The Netherlands
T +31 74 256 1010
F +31 74 291 0938
For complete list of sales and manufacturing sites, please visit
www.emersonprocess.com/valveautomationlocations
Or contact us at [email protected]
www.emersonprocess.com/bettis
All Rights Reserved.
We reserve the right to modify or improve the designs or
specifications of the products mentioned in this manual at any
time without notice. Emerson Process Management does not
assume responsibility for the selection, use or maintenance
of any product. Responsibility for proper selection, use and
maintenance of any Emerson Process Management product
remains solely with the purchaser.
©2015 Emerson Electric Co.
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement