E-20 COMPARTMENT FLOODING WATER LEVEL DETECTORS

Guideline No.: E-20(201712)
E-20 COMPARTMENT FLOODING
WATER LEVEL DETECTORS
(INCLUDING SENSORS)
Issued date: December 26, 2017
© China Classification Society
Foreword:
This Guideline is a part of CCS Rules, which contains technical requirements, inspection and
testing criteria related to classification and statutory survey of marine products.
This Guideline is published and updated by CCS and can be found through http://www.ccs.org.cn .
Comments or suggestions can be sent by email to ps@ccs.org.cn .
Historical versions and release date: E-20(201510)
October 20,2015
E-20(201610)
October 28,2016
E-20(201705)
May 9, 2017
Main changes and effective date:
Chapter 6.4.7, and 4.11 of Table 7.1.2 are modified in accordance with Resolution
MSC.1/Circ.1572 (2017.6.09).
E-20(201712) COMPARTMENT FLOODING WATER LEVEL DETECTORS (INCLUDING
SENSORS)
CONTENTS
1 Application ..................................................................................................................................... 4
2 Normative references ..................................................................................................................... 4
3 Definitions...................................................................................................................................... 4
4 Drawings and documentation......................................................................................................... 5
5 Materials and components ............................................................................................................. 6
6 Technical requirements .................................................................................................................. 6
7 Type test ......................................................................................................................................... 9
8 Unit/batch inspection ................................................................................................................... 27
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COMPARTMENT FLOODING WATER LEVEL DETECTORS (INCLUDING
SENSORS)
1 Application
1.1 This guideline is applicable to the approval and inspection of water level detectors equipped
on single hold cargo ships and bulk carriers other than the passenger ships and bulk carriers
required in Regulation 22-1 and Regulation 25, Chapter II-1 and Regulation 12, Chapter XII of
SOLAS.
1.2 This guideline does not involve the onboard installation and arrangement of water level
detectors.
2 Normative references
The applicable normative references are as follows:
2.1 Regulation 22-1 and Regulation 25, Chapter II-1 and Regulation 12, Chapter XII of
SOLAS1974 and Amendments thereto;
2.2 Resolution MSC.188(79)(2004.12.3) Performance Standards for Water Level Detectors on
Bulk Carriers and Single Hold Cargo Ships other than Bulk Carriers;
2.3 MSC.1/Circ.1291(2008.12.9)Guidelines for Flooding Detection Systems on Passenger Ships;
2.4 MSC.1/Circ.1572 (2017.6.09) UNIFIED INTERPRETATIONS OF SOLAS CHAPTERS II-1
AND XII, OF THE TECHNICAL PROVISIONS FOR MEANS OF ACCESS FOR
INSPECTIONS (RESOLUTION MSC.158(78)) AND OF THE PERFORMANCE STANDARDS
FOR WATER LEVEL DETECTORS ON BULK CARRIERS AND SINGLE HOLD CARGO
SHIPS OTHER THAN BULK CARRIERS (RESOLUTION MSC.188(79)).
2.5 IACS UI SC180 (Sept2003) (Rev.1May 2004) (Rev.2 Nov 2005) (Rev.3Mar 2012)Hold,
Ballast and Dry Space Water Level Detectors (Chapter II-1/25 and Chapter XII/12) and
Performance Standards for Water Level Detectors on Bulk Carriers and Single Hold Cargo Ships
other than Bulk Carriers (Resolution MSC.188(79));
2.6 Chapters 1, 2, 3, PART FOUR and Section 7 (sensors), Chapter 2, PART SEVEN of CCS
Rules for Classification of Sea-going Steel Ships and Amendments thereto;
2.7 IMO A.1021(26)(2009.12.2)Code on Alerts and Indicator;
2.8 IEC60092-504 (2001-03) Electrical Installations in Ships-Part 504: Special Features-Control
and Instrumentation;
2.9 CCS GD 22-2015 Guidelines for Type Approval Test of Electric and Electronic Products;
2.10 IEC 60529:1989+AMD1:1999+AMD2:2013 CSV
Enclosures (IP Code);
Degrees of Protection Provided by
2.11 IEC60079-0:2011 RLV Explosive Atmospheres - Part 0: Equipment - General requirements;
2.12 IEC60079-11:2011 Explosive Atmospheres - Part 11: Equipment Protection by Intrinsic
Safety ‘i’'.
3 Definitions
3.1 The terms and definitions used in this guideline are consistent with those in SOLAS.
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3.2 The terms and definitions used in this guideline are consistent with those in CCS Rules for
Classification of Sea-going Steel Ships.
3.3 The terms and definitions used in this guideline are consistent with those in IEC60092-504.
3.4 The terms and definitions used in this guideline are consistent with those in IMO A. 1021(26).
3.5 Water level detector is a system comprised of sensor and display device, which is used to
detect any water ingress in cargo holds and other spaces and activate the corresponding alarm, as
required by SOLAS Regulation XII/12 or Regulation II-1/22-1 or Regulation II-1/25.
3.6 Sensor is a component which is fitted in monitored spaces and able to activate signals
alarming water flooding in such spaces.
3.7 Water ingress detection pre-alarm means an alarm given when the water level reaches a lower
level in cargo holds or other spaces on bulk carriers or single hold cargo ships.
3.8 water ingress detection main-alarm means an alarm given when the water level reaches the
main alarm level in cargo holds or other spaces on bulk carriers or single hold cargo ships. This is
applicable to SOLAS Regulation XII/12 or Regulation II-1/25; or the unique water level required
by SOLAS Regulation II-1/22-1 which is applicable to the compartments other than cargo holds.
3.9 Visual display means the light device or other devices visible to human eyes under various
illuminated and dim conditions in various spaces or places.
3.10 Audible display means the audible signal detectable in the space from which such signal is
given.
4 Drawings and documentation
4.1 The drawings and documentation to be submitted to CCS for approval:
4.1.1 General plan;
4.1.2 Main parts diagram;
4.1.3 Panel arrangement plan;
4.1.4 Electric circuit and power supply diagrams;
4.1.5 List of elements and devices (including the name, type, specifications, quantity,
manufacturer or brand of elements and devices, the code of elements and devices in the electric
circuit diagram, etc.);
4.1.6 Type test plan;
4.1.7 Product technical specifications or enterprise standard.
4.2 The drawings and documentation to be submitted to CCS for review:
4.2.1 Instructions for use of the product (both in English and Chinese);
4.2.2 Process documents and process flow chart showing quality monitoring points;
4.2.3 Software specification (including programming platform, software type, software version,
etc., applicable to products with programmable elements);
4.2.4 Software flow chart/program block diagram (applicable to products with programmable
elements);
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4.2.5 Type, specification and list of qualified suppliers of main raw materials and parts (e.g. sensor,
integrated circuit chip, printed circuit board, semi-conductor element, fuse, switch, power module,
light emitting diode, printed product, insulation paint, etc.);
4.2.6 System wiring diagram or hardware block diagram;
4.2.7 External wiring diagram;
4.2.8 Nameplate;
4.2.9 Product quality certificates;
4.2.10 Information on the manufacturer’s production capacity and quality system documents.
5 Materials and components
Materials and components should be controlled by the relevant requirements of CCS current rules.
The type and specifications of sensors are to be expressly indicated in the approval certificate and
controlled by the list of approved and qualified suppliers. Where approved sensors are to be
replaced by sensors of other types, CCS product certificate is to be presented or the corresponding
type test is to be performed.
6 Technical requirements
6.1 System components
The water level detector is a system composed of a number of sensors (sensors of explosion-proof
type include safety barrier) and display devices (usually electric control box), among which the
electric control box and safety barrier are installed in safe areas and sensors are installed in
hazardous areas (if they are explosion proof).
6.2 Method of water level detection
6.2.1 Water level may be detected by the following direct or indirect means:
(1)Indirect means of detection: existence of water is determined through physical contact between
water and the detector.
(2)Indirect means of detection: include devices that do not involve physical contact with water.
6.2.2 Water level detection system is to be capable of operating continuously while the ship is
navigating on the sea.
6.3 Requirements for water level detector
6.3.1 The detection system is to provide reliable display when the water reaches the preset level.
Use of sensors capable of detecting two preset levels (warning level and main alarm level) is
allowed.
6.3.2 Requirements for water level detectors on bulk carriers
(1) A visual and audible alarm is to be activated when the water in each cargo hold reaches a level
0.5m above the inner bottom of the cargo hold, and a visual and audible alarm is also to be
activated when the height of water level is not less than 15% of the cargo hold depth and not more
than 2m. For bulk carriers to which SOLAS Regulation XII/9.2 is applicable, only the alarm
device giving the latter alarm is required. For cargo holds used for water ballasting, an alarm
overriding control device may be installed. The visual and audible alarm is to be capable of clearly
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distinguishing the two kinds of water levels detected in each cargo hold.
(2) The audible and visual alarms are to be activated when the water within any ballast tank
forward of the collision bulkhead required in SOLAS RegulationⅡ-1/11 has reached a level not
greater than 10% of the tank capacity. The displayed visual and auditory features of the alarm are
to be identical to those corresponding to the main alarm level of cargo holds. An alarm overriding
control device is to be installed for the purpose of level alarm overriding control when the tank is
being used.
(3) In any dry space or void space other than the chain locker, extended to any location forward of
the fore cargo hold, the audible and visual alarms are to be activated when the water reaches a
level 0.1m above the deck. The displayed visual and auditory features of the alarm are to be
identical to those corresponding to the main alarm level of cargo holds. Such alarms does not have
to be installed provided that the capacity of enclosed spaces is not more than 0.1% of the ship’s
maximum displacement.
6.3.3 Requirements for the performance of water level detectors on single hold cargo ships other
than bulk carriers
An audible and visual alarm is to be activated when the water in a cargo hold reaches a level not
less than 0.3m above the inner bottom of the cargo hold and the same is to be also activated when
the water reaches a level not more than 15% of the average cargo hold depth.
6.3.4 Requirements for water level detectors on passenger ships
Refer to Regulations 6 and 7 of MSC.1/Circ.1291 Guidelines for Flooding Detection Systems on
Passenger Ships for the requirements for detector configuration on passenger ships:
Regulation 6 of Guidelines for Flooding Detection Systems on Passenger Ships: water level
detectors are to be provided in all enclosed spaces that are located below the bulkhead deck and
have a capacity larger than:
(1) Molded volume of displacement per centimeter at deepest subdivision draught, or
(2) 30m3, whichever is greater.
Regulation 7 of Guidelines for Flooding Detection Systems on Passenger Ships: compliance with
the requirements of Regulation 6 may be waived provided that the liquid (e.g. freshwater, ballast
water, fuel oil, etc.) level sensors are installed individually in the spaces of abovementioned
capacities and indicator board or other monitoring devices are provided in the navigation bridge.
The provided water level detection system on passenger ships is to be installed as close to the
compartment bottom as possible in the vertical direction to ensure that alarms are activated
immediately upon detection of any flooding in the abovementioned watertight compartments.
6.3.5 Detection devices are to be adequately protected against corrosion caused by the intended
cargo to be loaded. Detection devices consist of sensors and filters installed in cargo holds and
other spaces and the protective devices of detectors.
6.3. 6 The activation precision of water level detectors is to be ±100mm.
6.3.7 The electric circuit in cargo area, if any, of water level detectors, is to be intrinsically safe
circuit of grade ib specified in IEC 60079. Such intrinsically safe circuit may not be mandatorily
required provided that the ship is designed to carry only the cargos that will not generate
combustible or explosive atmospheres, which is specified in the ship’s operational manual of the
detection system, ship loading manual and relevant certificate for carrying special cargos.
Intrinsically safe equipment in cargo spaces, if installed, is to be qualified explosion-proof
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electrical equipment meeting the requirements. The explosion-proof grade and maximum surface
temperature of such equipment are to be suitable for the combustible dust and/or explosive gas
that may be present. Where the properties of such combustible dust and/or explosive gas are
unknown, the explosion-proof grade is to be no less thanⅡC and the temperature class is to beT6
or the maximum surface temperature is to be no more than 85°C (ExibIICT6).
If intrinsically safe circuit is included in the detector system, the plan of its installation and
arrangement on board is to be evaluated /approved by CCS.
6.3.8 Degree of protection by enclosure
(1) The degree of protection by enclosure is to be IP22 for control box of detection devices and
IP56 for safety barrier junction box installed on decks.
(2) Degree of protection of sensors
For liquid level sensors installed in cargo holds, ballast tanks and dry spaces, the degree of
protection provided by their enclosures is to be in compliance with the requirements for IP68 in
IEC 60529.
6.4 Requirements for alarm system
6.4.1Visual and audible alarms are to be installed in the navigation bridge.
6.4.2 Visual and audible alarms are to comply with the requirements of IMO A1021 (26) Code on
Alerts and Indicators:
This code is applicable to alarms activated for ship protection or ship safety;
Warning level means an alarm level on which the circumstance is to be displayed for immediate
attention to prevent occurrence of any emergency;
Main alarm level is an emergency alarm level on which the circumstance is to be displayed for
immediate actions to be taken to prevent damage to human life or the ship.
6.4.3Visual and audible alarms are to meet the following requirements:
(1) Light of special color or digital display unit clearly visible under varying expected illumination
conditions is to be used for visual display, and such display is not to cause serious interference
with other activities required for safe operation of the ship. Visibility of such visual display is to
be maintained unless the activation condition of the visual display has been restored to a point
below the set value of relevant sensors. Visual display is not to be capable of being closed by the
operator.
(2) The system is to be capable of providing visual and auditory display and alarm of the same
sensor in the compartment where the display unit is located. Auditory display is to be capable of
being closed by the operator.
(3)The alarm signal panel is to be fitted with switches for testing visual and audible alarm devices
and these switches are to be in off position when they are not in use.
(4) The visual and audible alarms of water level detectors are to be different from other alarm
signals (in the navigation bridge).
6.4.4 The alarm system may have time delay function to prevent false alarm from being triggered
under the sloshing effects arising from ship movement.
6.4.5 For detection systems installed only in liquid tanks and cargo holds designed to hold ballast
water, the alarm system is to have display and alarm overriding control ability (SOLAS
Regulation XII/12.1). Compartments that may be designed with overriding control include:
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(1) One alarm overriding control device may be installed in the cargo hold used for ballast tank.
(2) Any ballast tank forward of the collision bulkhead.
For a flooding alarm system, arrangement of alarm overriding control is not allowed in the spaces
(e.g. dry space, cargo hold, etc.) which cannot be designed with alarm overriding control and used
for water ballasting.
6.4.6 The water level detectors in cargo holds or liquid tanks described in 6.4.5 are to be capable
of overriding visual display at all times during the out-of-service period. If such overriding ability
is provided, the water level detectors are to be capable of automatically cancelling the overriding
state and restoring the alarming ability when the ballast water in cargo holds or liquid tanks is
drained to the indicated minimum alarm level.
6.4.7 The failure, alarm and display system is to include a device for continuous monitoring and
such device is to be capable of activating visual and audible alarms once any failure is detected.
The audible alarm is to be capable of being silenced while the visual display continues to function
until the failure is eliminated.
Fault monitoring should address faults associated with the system that include open circuit, short
circuit, as well as arrangement details that would include loss of power supplies and CPU failure
for computer based alarm/monitoring system, etc.
6.4.8 Power supply to water level detectors
The power supply to water level detectors is to comply with the following requirements:
1. Water level detectors are to be energized by two independent sources of power:
(1) Main source of power and emergency source of power; or
(2) Main source of power and one continuously charged special accumulator battery whose
arrangement, location and power supply duration are equivalent to those of the emergency source
of power (18h). This accumulator battery may be an internal battery of the water level detection
system;
2. The power supply changeover equipment for changeover from one source of power to another
needs not be integrated into the water level detection system;
3. Alarm indication is to be activated when the main source of power supply sustains any failure.
Where the accumulator battery is used as the alternative source of power, both sources of power
are to be provided with failure alarm.
6.5 Water level detectors are to be provided with warning and main alarm output interface to
VDR.
7 Type test
7.1 Water level detectors are to be type tested as specified. The specific test requirements are as
follows:
7.1.1 All tests are to be carried out under the following atmospheric conditions:
(1) Ambient temperature: 15°C~35°C;
(2) Relative humidity: 30%RH~90%RH;
(3) Atmospheric pressure: 86~106 kPa.
7.1.2 The water level detectors installed on bulk carriers are, as a minimum, to be type tested in
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accordance with Table 7.1.2; the water level detectors installed on passenger ships and single hold
cargo ships may be type tested with reference to Table 7.1.2.
Type test Items
No.
1
Test item
Technical requirements
Test method
Table 7.1.2
Remark
To be in accordance
with the requirements
of approved drawings; Visual inspection.
Inspection of
assembly and wiring Other tools such as
appearance, structure
processes are to
measuring gauge
and marks
comply with the
are to be used when
requirements of the
necessary.
manufacturer’s
process documents.
a)Between independent
2.14 of GUIDELINE
2.14 of GUIDELINE FOR
FOR TYPE
TYPE APPROVAL TEST APPROVAL TEST OF
2
circuits;
b)To ground, after all circuits
are connected in series;
Electric strength
OF ELECTRICAL AND
ELECTRICAL AND
verification
ELECTRONIC
ELECTRONIC
PRODUCTS (CURRENT
PRODUCTS
VALID VERSION)
(CURRENT VALID
d)Printed circuit with electric
VERSION)
elements liable to damage
c)Contact element is to be in
normally open position;
may be removed.
Insulation resistance between
2.3 of GUIDELINE FOR
2.3 of GUIDELINE
all circuits and the ground
FOR TYPE
and that on the power source
TYPE APPROVAL TEST APPROVAL TEST OF end (if applicable) are to be
3
Insulation resistance
OF ELECTRICAL AND
ELECTRICAL AND
verified; measurement is to
verification
ELECTRONIC
ELECTRONIC
be taken before and after tests
PRODUCTS (CURRENT
PRODUCTS
such as electric strength test,
VALID VERSION)
(CURRENT VALID
humidity and heat test, low
VERSION)
temperature test, salt mist
test, etc.
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4
Performance test
When the alarm test
4.1
Alarm test, switch
functions
button on control box
panel is pressed down, the
Manual inspection
alarm indicator lamp on
the control box panel is to
be lit and the buzzer
sounded.(3.2.2 of
MSC.188(79) Appendix)
1. When any flooding
alarm is activated, the
buzzer is to give different
and distinguishable
sounds for warning alarm
and main alarm. (2.1.1 of Manual inspection. Sound
MSC.188(79) Appendix)
4.2
Audible alarm function
2. Range of sound signal
frequency: 200-2500Hz
pressure level is to be
measured from a distance
1m away from the audible
alarm using audio
3. Range of sound
frequency meter.
pressure: 75-95 decibels,
not more than 115
decibels
(5.4.3.4.1 and 5.4.3.4.2 of
MSC/Circ.982)
1. Visual alarm is to be
capable of clearly
distinguishing the two
different kinds of water
levels (the requirement of
(1) in SOLAS Regulation
4.3
Visual alarm function
XII/12) (the requirement
of (2) in 3.2.2 of MSC.
188 (79)).
2. Visual alarm is to
indicate the compartment
where it is located (the
requirement of (1) in 3.2.2
of MSC.188 (79)).
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Visual inspection
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Once the silencing button
is pressed down when the
4.4
Alarm silencing function
buzzer is sounding, the
Manual inspection
buzzer is to stop sounding.
(3.3.7 of MSC.188(79))
When any alarm is
activated, the alarm
indicator lamp is to be
flashing after a short
automatic time delay of
4.5
Alarm flash-eliminating
function
the detection system.
When the
Manual inspection
flash-eliminating button is
pressed down, the alarm
indicator lamp is to stop
flashing while the alarm
color still remains.
(3.3.7 of MSC.188 (79))
The indicator lamps of the
product, other than alarm
indicator lamp and
4.6
Indicator light-lamp
illuminating light of the
brightness adjustment
light adjusting and
function
controlling device, are to
Manual inspection
have the function of
manual brightness
adjustment.
1. The detection system
installed in forepeak tanks
The following test
and cargo holds designed methods may be employed
to hold ballast water is to for liquid level (pressure)
have the ability of
sensors:
overriding display and
direct method: using
alarm.
4.7 Alarm overriding function
plastic pipe containing
2. When the ballast water
water;
in the abovementioned
tanks/holds is drained to
And indirect method:
the minimum indicated
using pressure calibrator.
alarm level, the overriding
state is to be automatically
cancelled and alarm
ability restored.
For float-type sensors or
electrode-type sensors,
testing methods suitable to
(3.3.6 of MSC.188 (79))
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these types may be
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employed.
The interpretation of UI
SC180 has specified:
Test item- two
independent sources of
power are to be available,
one being the main source
of power and the other the
emergency source of
power, unless a
continuously charged
special accumulator
battery, whose
arrangement, location and
power supply duration are
equivalent to those of the
Power failure alarm
4.8
function; function of
backup source of power;
1. The detection system is
to be energized by two
independent sources of
emergency source of
power (18h), has been
Manual inspection
provided. The
power.
accumulator battery may
be installed into the water
level detection system.
-
Power supply
changeover arrangement
needs not be integrated
with the water level
detection system.
-
Where the accumulator
battery is used for
secondary source of power
supply, both sources of
power supply are to be
provided with failure
alarm device.
4.9
2.In the event of any
The interpretation of UI
Open circuit failure of
failure of the main source
SC180 has specified:
liquid level sensors or
of power, the failure
other circuits
indicator lamp and buzzer
monitoring means the
are to be capable of
monitoring of all
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Manual inspection
Test item: deficiency
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displaying the alarm
deficiencies related to the
simultaneously, and the
system, e.g. broken
backup source of power is
circuit, short circuit,
to start operating.
power loss, CPU failure.
3. Where an accumulator
4.10
battery is used as
The interpretation of UI
alternative source of
SC180 has specified:
power, the failure
Test item: deficiency
Short circuit failure of
indicator lamp and buzzer
liquid level sensors or
are to be capable of
other circuits
displaying the alarm
deficiencies related to the
simultaneously in the
system, e.g. broken
event of battery failure
circuit, short circuit,
during the test. (3.3.8 of
power loss, CPU failure.
monitoring means the
Manual inspection
monitoring of all
MSC.188 (79))
1.Power supply to CPU is
to be cut off directly and
individually, and failure
alarm indication is to be
output; or
In the event of any CPU
failure (including cutoff of 2. The CPU program is to
be cleared, and failure
CPU power, program
4.11
CPU failure test
failure, communication
alarm indication is to be
failure, etc.), the buzzer
output; or
and visual alarm indicator
3. The CPU
light on the control box
communication line is to
panel are to give visual
be disconnected, and
and audible alarm signals. failure alarm indication is
(3.3.7 of MSC.188 (79))
to be output; or
4. CPU is to be tested by
other methods that are
capable of detecting the
CPU failure.
4.12
Warning function
1. When the water in the
The following methods
controlled compartment
may be employed for
reaches the warning level
liquid level (pressure)
of the detection system,
sensors:
the indicator lamp on the
direct method: using
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This test should be
carried out for
computer based
alarm/monitoring
system.
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control box panel
plastic pipe containing
corresponding to the
water;
compartment is to be lit
after a short automatic
and indirect method: using
pressure calibrator.
time delay of the detection
system and in the
For float-type sensors or
meanwhile, the buzzer and
electrode-type sensors,
the corresponding
testing methods suitable to
indicator lamp are to give
these types may be
audible and visual alarm
employed.
signals.
2. The audible alarm
signal given by the buzzer
is to be capable of being
eliminated by pressing
down the silencing button.
3. The indicator lamp on
the control box panel
corresponding to the
compartment is not to be
capable of being cleared
manually. The indicator
lamp is to go out only
when the water level in
the compartment is lower
than the warning level.
4. The activation precision
of the warning level alarm
is to be within ±100mm.
(3.2 and 3.3 of MSC. 188
(79))
1. When the water in the For liquid level (pressure)
4.13
Main alarm function
controlled compartment
sensors, the following
reaches the main alarm
methods may be
level of the detection
employed:
system, the indicator lamp
on the control box panel
corresponding to the
compartment is to be lit
after a short automatic
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direct method: using
plastic pipe containing
water;
And indirect method:
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time delay of the detection using pressure calibrator.
system and in the
meanwhile, the buzzer and
the corresponding
indicator lamp are to give
For float-type sensors or
electrode-type sensors,
testing methods suitable to
these types may be
audible and visual alarm
employed.
signals.
2. The audible alarm
signal given by the buzzer
is to be capable of being
eliminated by pressing
down the silencing button.
3. The indicator lamp on
the control box panel
corresponding to the
compartment is not to be
capable of being cleared
manually. The indicator
light is to go out only
when the water level in
the compartment is lower
than the main alarm level.
However, the sound of the
buzzer is different from
that of the warning level
alarm.
4. The activation precision
of the main alarm level is
to be within ±100mm.
(3.2 and 3.3 of MSC. 188
(79))
The detection devices are
to be capable of outputting
4.14
Warning and main alarm
the warning and main
Necessary equipment is to
output interface to VDR
alarm to VDR.
be connected. Manual
inspection.
(10.1.1 of IMO
A.1021(26))
4.15
Hydraulic test
Detection devices are to
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For immersion test of
Interpretation of UI
E-20(201712) COMPARTMENT FLOODING WATER LEVEL DETECTORS (INCLUDING
SENSORS)
be capable of providing
electrical elements to be
reliable display when the
installed in ballast water
water reached the preset tanks or liquid cargo tanks
levels and their durability
used as ballast water
and suitability under
tanks, the duration is to be
appropriate conditions and
no less than 20 days.
cases specified in IEC
- For immersion test of
60092-504 are to be
electrical elements to be
verified through type test. installed in dry spaces or
(2.1.1(1) of Appendix to
MSC.188 (79))
cargo tanks not used as
ballast tanks, the duration
is to be no less than 24h.
- Where detectors and/or
cable connecting devices
(e.g. junction box, etc.)
are installed in spaces
adjacent to cargo holds
(e.g. lower seat) and such
spaces are deemed flooded
during calculation of
damage stability, such
detectors and devices are
to comply with the
requirements of IP68 for
water head. The water
head is to be equivalent to
the tank depth. The test
duration, either 20 days or
24h, is to be
determined based on
whether the tanks
described in the previous
two points are intended to
be used as ballast water
tanks. The degree of
protection for liquid level
sensors is to be IP68.
The detection device is to The detection device is to
4.16
Immersion test
be allowed to work in
be allowed to work in
cargo/water mixture
cargo/water mixture
which is composed of
which is composed of
17 / 27
SC180 is as follows:
For immersion test of
electrical elements to be
installed in ballast water
tanks or liquid cargo tanks
used as ballast water
tanks, the duration is to be
no less than 20 days.
- For immersion test of
electrical elements to be
installed in dry spaces or
cargo tanks not used as
ballast tanks, the duration
is to be no less than 24h.
- Where detectors and/or
cable connecting devices
(e.g. junction box, etc.)
are installed in spaces
adjacent to cargo holds
(e.g. lower seat) and such
spaces are deemed flooded
during calculation of
damage stability, such
detectors and devices are
to comply with the
requirements of IP68 for
water head. The water
head is to be equivalent to
the tank depth. The test
duration, either 20 days or
24h, is to be
determined based on
whether the tanks
described in the previous
two points are intended to
be used as ballast water
tanks.
Interpretation of UI
SC180 is as follows:
(I) Type test required for
E-20(201712) COMPARTMENT FLOODING WATER LEVEL DETECTORS (INCLUDING
SENSORS)
seawater and cargos
seawater and cargos
sensors is to comply with
within the selected range, within the selected range,
the following
such as iron ore fines, coal such as iron ore fines, coal
requirements:
fines, grains and oil, with fines, grains and oil, with 1. The dimensions of test
a layer of fine suspended
a layer of fine suspended
container of cargo/water
matters representative of
matters representative of
mixture are to meet the
each cargo on the surface each cargo on the surface
following criteria: the
of the mixture. For the
of the mixture. For the
height and capacity are to
purpose of type test, the
purpose of type test, the
be sufficient for complete
representative fine
representative fine
immersion of the detector
suspended matters
suspended matters
and any filter during the
contained in the seawater contained in the seawater
repetitive function tests
are to be agitated and
are to be agitated and
required by immersion test
reach a concentration
reach a concentration
and the static and dynamic
equivalent to 50% of its
equivalent to 50% of its inclining tests described in
weight, and the entire
weight, and the entire
the previous
package of detection
package of detection
interpretations.
device including any filter device including any filter
is to be used. The function is to be used. The function
of the detection device
of the detection device
2. The detector and any
filter intended to be
with filter is to be verified with filter is to be verified immersed and installed in
by immersing the device
by immersing the device
the container are to be
in the cargo/water mixture in the cargo/water mixture installed according to the
for ten times without
for ten times without
instructions for
cleaning the filter.
cleaning the filter.
installation contained in
the equipment manual.
(2.1.1 (2) of Appendix to
MSC.188 (79))
3. The pressure on the
detector and filter applied
by the container used for
testing the entire package
of sensors is not to exceed
0.2 bar. The pressure is
applied by means of
pressurization or using
containers of sufficient
height.
4. The cargo/water
mixture is to be pumped
into the test container and
properly agitated to keep
the solid matters in
18 / 27
E-20(201712) COMPARTMENT FLOODING WATER LEVEL DETECTORS (INCLUDING
SENSORS)
suspended state. Pumping
of the cargo/water mixture
is not to affect the normal
operation of the sensor
and filter.
5. The cargo/water
mixture is to be pumped
into the test container to a
preset sensor immersion
level. The operation of
alarms is to be observed.
6. Then the water in the
test container is to be
drained and deactivation
of the alarm is to be
observed.
7. It is allowable for the
test container and sensor
fitted with filter to be
dried without physical
intervention.
8. The test procedure is
to be repeated for ten
times and during this
process, any filter
installed according to the
manufacturer’s
instructions for
installation is not to be
cleaned.
9. Satisfactory alarm
activation and
deactivation during each
of the ten tests indicates a
successful type test.
(II) The cargo/water
mixture used for type test
is prepared with the
representative cargos
19 / 27
E-20(201712) COMPARTMENT FLOODING WATER LEVEL DETECTORS (INCLUDING
SENSORS)
within the selected range,
consisting of and
including the following
groups, which contains the
minimum fine particles
that may be found in the
typical representative
samples. 1. Iron ore fines
20 / 27
E-20(201712) COMPARTMENT FLOODING WATER LEVEL DETECTORS (INCLUDING
SENSORS)
and seawater;
2. Coal fines and
seawater;
3. Grain particles and
seawater; and
4. Mixture (sand) fines
and seawater.
The size of the minimum
and maximum fine
particles and the density
of the dried mixture are to
be confirmed and
recorded. The fine
particles are to be evenly
distributed in the mixture.
The type test of
representative fine
particles has in general
proved that all kinds of
cargos in the four
abovementioned groups
are qualified.
(III) The guidance on how
to select fine particles for
the test is as follows:
1. Iron ore fines are to
mainly consist of small
and loose ore slags and
non-lumped iron ores (size
of fine particles<0.1mm).
2. Coal fines are to
mainly consist of small
and loose coal ore slags
and non-lumped coal ores
(size of fine
particles<0.1mm).
3. Grain fine particles
are to mainly consist of
small, loose and freely
flowable grains (size of
21 / 27
E-20(201712) COMPARTMENT FLOODING WATER LEVEL DETECTORS (INCLUDING
SENSORS)
grains >3mm, such as
wheat).
4. Mixed fine particles
are to mainly consist of
small, loose and
non-lumped grains in the
freely flowable sands (size
of fine particles<0.1mm).
Intrinsically safe type
4.17
Explosion-proof
performance
To be in accordance with
To be in accordance with
IEC 60079-11.
IEC 60079-11.
Only the safety barrier and
liquid level sensors are to
be tested.
2.4 of GUIDELINE FOR 2.4 of GUIDELINE FOR
TYPE APPROVAL TEST TYPE APPROVAL TEST
5
Power steady-state
OF ELECTRICAL AND
OF ELECTRICAL AND
fluctuation test
ELECTRONIC
ELECTRONIC
PRODUCTS (CURRENT PRODUCTS (CURRENT
VALID VERSION)
VALID VERSION)
2.4 of GUIDELINE FOR 2.4 of GUIDELINE FOR
TYPE APPROVAL TEST TYPE APPROVAL TEST
6
Power transient
OF ELECTRICAL AND
OF ELECTRICAL AND
fluctuation test
ELECTRONIC
ELECTRONIC
PRODUCTS (CURRENT PRODUCTS (CURRENT
VALID VERSION)
VALID VERSION)
The test is to verify:
2.5 of GUIDELINE FOR 2.5 of GUIDELINE FOR
TYPE APPROVAL TEST TYPE APPROVAL TEST
7
Power failure test
OF ELECTRICAL AND
OF ELECTRICAL AND
ELECTRONIC
ELECTRONIC
PRODUCTS (CURRENT PRODUCTS (CURRENT
VALID VERSION)
VALID VERSION)
a) The specified action of
the equipment during
power failure and
reinstatement;
b) No damage to the
program and data of
programmable electronic
systems (if applicable).
8
Vibration test
2.7 of GUIDELINE FOR 2.7 of GUIDELINE FOR a) The equipment is to be
TYPE APPROVAL TEST TYPE APPROVAL TEST in operating state during
OF ELECTRICAL AND
OF ELECTRICAL AND
22 / 27
vibration test;
E-20(201712) COMPARTMENT FLOODING WATER LEVEL DETECTORS (INCLUDING
SENSORS)
ELECTRONIC
ELECTRONIC
b) The test is to be carried
PRODUCTS (CURRENT PRODUCTS (CURRENT out along three mutually
VALID VERSION) [when
VALID VERSION)
vertical axial lines;
the frequency is
c) The value of Q is to be
2+3-0~13.2Hz, the
as recommended by the
vibration amplitude is to
Guidelines but not greater
be ±1.0 mm; and when the
than 5;
frequency is 13.2~100, the
acceleration is to be ±6.9
d) If the several measured
m/s2 (including all test
resonance points are close
specimens)]
to each other, the duration
of frequency scanning test
is to be120min.
1. The degree of
protection of control
2.15 of GUIDELINE FOR 2.15 of GUIDELINE FOR
boxes is to be IP22;
TYPE APPROVAL TEST TYPE APPROVAL TEST
9
Test of degrees of
OF ELECTRICAL AND
OF ELECTRICAL AND
protection provided by
ELECTRONIC
ELECTRONIC
enclosure
2. The degree of
protection of safety barrier
PRODUCTS (CURRENT PRODUCTS (CURRENT
VALID VERSION)(or
VALID VERSION)(or IEC
IEC 60529)
60529)
junction box is to be
IP56。
3. The degree of
protection of liquid level
sensors is to be IP68.
Equipment without heat
radiating device:
10
High temperature test
2.8 of GUIDELINE FOR
a) The equipment is to be
TYPE APPROVAL TEST
energized and operate in
OF ELECTRICAL AND
2.8 of GUIDELINE FOR
ELECTRONIC
TYPE APPROVAL TEST
PRODUCTS (CURRENT OF ELECTRICAL AND
VALID
ELECTRONIC
high temperature
environment;
b) Function test is to be
carried out in the last one
VERSION)[+55°C±2°C, PRODUCTS (CURRENT hour at test temperature;
16h (control box)
VALID VERSION)
c) Function test is to be
+70°C±2°C, 2h (safety
carried out after
barrier, sensor)]
restoration.
Equipment with heat
radiating device:
23 / 27
E-20(201712) COMPARTMENT FLOODING WATER LEVEL DETECTORS (INCLUDING
SENSORS)
a) The equipment is to be
energized and operate in
high temperature
environment, with the heat
radiating system being
switched on;
b) Function test is to be
carried out in the last one
hour at test temperature;
c) Function test is to be
carried out after
restoration.
a) Initial insulation
resistance is to be
measured;
b) The equipment is not to
be energized and operate
2.9 of GUIDELINE FOR
throughout the entire test
TYPE APPROVAL TEST
OF ELECTRICAL AND
ELECTRONIC
PRODUCTS (CURRENT
11
Low temperature test
duration at test
2.9 of GUIDELINE FOR temperature, except when
function test is to be
TYPE APPROVAL TEST
OF ELECTRICAL AND
carried out in the last one
ELECTRONIC
hour at low temperature;
+5°C±3°C, 2h (control
PRODUCTS (CURRENT
c) Function test is to be
box);
VALID VERSION)
carried out in the last one
VALID VERSION)
-25°C±3°C, 2h (safety
hour in low temperature
barrier, sensor)]
environment;
d) Measurement of
insulation resistance and
function test are to be
carried out after
restoration.
12
Alternate humid and heat
test
Item 8, Table 1 of IEC
2.10 of GUIDELINE FOR a) Insulation resistance is
60092-504:2001;
TYPE APPROVAL TEST to be tested and measured;
2.10 of GUIDELINE FOR
TYPE APPROVAL TEST
OF ELECTRICAL AND
OF ELECTRICAL AND
ELECTRONIC
PRODUCTS (CURRENT
ELECTRONIC
24 / 27
VALID VERSION)
b) The equipment is to
operate within the first
cycle and is to be shut
down during the second
E-20(201712) COMPARTMENT FLOODING WATER LEVEL DETECTORS (INCLUDING
SENSORS)
PRODUCTS (CURRENT
cycle except when
VALID VERSION) [at
function test is being
55°C, relative humidity is
carried out;
to be 95%,
c) Function test is to be
2×(12+12hours)]
carried out at test
temperature in the first
two hours of the first cycle
and in the last two hours
of the second cycle;
d) The equipment is to be
restored under standard
environmental conditions;
Measurement of insulation
resistance and
performance test are to be
carried out.
2.12 of GUIDELINE FOR 2.12 of GUIDELINE FOR
Salt mist test (Kb)
13
TYPE APPROVAL TEST TYPE APPROVAL TEST
(applicable to installations OF ELECTRICAL AND
on open decks or in open
cargo holds
OF ELECTRICAL AND
ELECTRONIC
ELECTRONIC
PRODUCTS (CURRENT PRODUCTS (CURRENT
VALID VERSION)
VALID VERSION)
2.6 of GUIDELINE FOR 2.6 of GUIDELINE FOR
Inclining test (if the
14
detectors have moving
parts)
TYPE APPROVAL TEST TYPE APPROVAL TEST
OF ELECTRICAL AND
OF ELECTRICAL AND
ELECTRONIC
ELECTRONIC
PRODUCTS (CURRENT PRODUCTS (CURRENT
VALID VERSION)
15
VALID VERSION)
Electromagnetic compatibility test
3.4 of GUIDELINE FOR 3.4 of GUIDELINE FOR
TYPE APPROVAL TEST TYPE APPROVAL TEST
15.1
Electrostatic discharge
OF ELECTRICAL AND
OF ELECTRICAL AND
immunity test
ELECTRONIC
ELECTRONIC
PRODUCTS (CURRENT PRODUCTS (CURRENT
VALID VERSION)
25 / 27
VALID VERSION)
Salt mist test is to be
carried out for sensors
located in open spaces;
The safety barrier junction
box, if installed on open
decks, is also to be subject
to the salt mist test.
E-20(201712) COMPARTMENT FLOODING WATER LEVEL DETECTORS (INCLUDING
SENSORS)
3.5 of GUIDELINE FOR 3.5 of GUIDELINE FOR
Radiated, radio-frequency,
15.2
electromagnetic field
immunity test
TYPE APPROVAL TEST TYPE APPROVAL TEST
OF ELECTRICAL AND
OF ELECTRICAL AND
ELECTRONIC
ELECTRONIC
PRODUCTS (CURRENT PRODUCTS (CURRENT
VALID VERSION)
VALID VERSION)
3.8 of GUIDELINE FOR 3.8 of GUIDELINE FOR
TYPE APPROVAL TEST TYPE APPROVAL TEST
15.3
Low-frequency
transduction immunity test
OF ELECTRICAL AND
OF ELECTRICAL AND
ELECTRONIC
ELECTRONIC
PRODUCTS (CURRENT PRODUCTS (CURRENT
VALID VERSION)
VALID VERSION)
3.9 of GUIDELINE FOR 3.9 of GUIDELINE FOR
Test of immunity to
15.4
TYPE APPROVAL TEST TYPE APPROVAL TEST
conducted disturbances,
OF ELECTRICAL AND
OF ELECTRICAL AND
induced by
ELECTRONIC
ELECTRONIC
radio-frequency fields
PRODUCTS (CURRENT PRODUCTS (CURRENT
VALID VERSION)
VALID VERSION)
3.6 of GUIDELINE FOR 3.6 of GUIDELINE FOR
Electrical fast
15.5 transient/burst immunity
test
TYPE APPROVAL TEST TYPE APPROVAL TEST
OF ELECTRICAL AND
OF ELECTRICAL AND
ELECTRONIC
ELECTRONIC
PRODUCTS (CURRENT PRODUCTS (CURRENT
VALID VERSION)
VALID VERSION)
3.7 of GUIDELINE FOR 3.7 of GUIDELINE FOR
TYPE APPROVAL TEST TYPE APPROVAL TEST
15.6
Surge immunity test
OF ELECTRICAL AND
OF ELECTRICAL AND
ELECTRONIC
ELECTRONIC
PRODUCTS (CURRENT PRODUCTS (CURRENT
VALID VERSION)
VALID VERSION)
3.3 of GUIDELINE FOR 3.3 of GUIDELINE FOR
Measurement of enclosure
15.7
port radiated emission
testing
TYPE APPROVAL TEST TYPE APPROVAL TEST
OF ELECTRICAL AND
OF ELECTRICAL AND
ELECTRONIC
ELECTRONIC
PRODUCTS (CURRENT PRODUCTS (CURRENT
VALID VERSION)
26 / 27
VALID VERSION)
E-20(201712) COMPARTMENT FLOODING WATER LEVEL DETECTORS (INCLUDING
SENSORS)
3.2 of GUIDELINE FOR 3.2 of GUIDELINE FOR
TYPE APPROVAL TEST TYPE APPROVAL TEST
15.8
Measurement of
OF ELECTRICAL AND
OF ELECTRICAL AND
conducted emission
ELECTRONIC
ELECTRONIC
PRODUCTS (CURRENT PRODUCTS (CURRENT
VALID VERSION)
VALID VERSION)
7.2 Selection of typical test specimens
7.2.1 The test specimens for type test are to be sampled by CCS surveyor from the manufacturer’s
qualified finished products.
7.2.2 For water level detectors, at least one set of test specimens is to be taken (may be increased
if required).
7.3Testing agency
7.3.1 For initial type approval, the organization undertaking the test is to be an appropriate testing
agency holding the corresponding CCS Product Inspection and Testing agency Approval
Certificate.
7.3.2 For the purpose of type approval certificate renewal, with the consent of CCS, the option of
conducting type testing the manufacturer’s lab under the witness of CCS surveyor may be
considered, provided that the equipment manufacturer has the test environment and equipment
specified by relevant standard and the competent inspection and testing personnel.
8 Unit/batch inspection
8.1The following items are to be executed for water level detectors at the manufacturer’s premise
on a package by package basis:
8.1.1 Structural inspection;
8.1.2Electric strength verification;
8.1.3 Insulation resistance verification;
8.1.4 Performance test: Items 4.1 to 4.14 in Table 7.1.2 are to be tested and verified. For item 14.2,
use of audio frequency meter and sound pressure meter is not required provided that the sounds of
warning and main alarm can be distinguished by human ears.
27 / 27