Water Mist System on ship

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4250TEU-YZJ Seaspan Ship ManagementLocal Protection Water Mist System Machinery Space

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_LOCAL PROTECTION WATER MISTSYSTEM MACHINERY SPACE

LOCATION-ENGINE ROOM 3RD DECK AFT,PORT SIDE

1. This system protects local hazardous area by water mist where

fire most often occur.

2. Spaces protected by this system are:

1 MAIN ENGINE

2 AE #1 & #2

3 AE#3 & #44 BOILER

5 INCINERATOR

6 PURIFIER


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6. Operation of this system is controlled by the water level float

switch fitted in Distill water tank. Ensure distill water tank have

sufficient water at all times.

MANUAL RELEASE OF SYSTEM

IN CASE OF FAILURE OF AUTOMATIC RELEASE.

1. Go to FIRE CONTROL STATION OR EHQ for manual

release.

2. Change over the mode of MANUAL RELEASE PANEL from

AUTOMATIC to LOCAL by key.

3. Manually activate the starting signal for pump to START bychanging the knob of affected space from AUTOMATIC to

LOCAL.

4. This action will start the pump, opens the section valve for

affected space/spaces & water mist releases to suppress the fire.


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Note: Water mist system can alsoactivate locally at the spaceprotected.

PRESS !!!!SPRINKLER RELEASE BUTTON


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LOCAL RELEASE OF WATER MIST SYSTEMIF SYSTEM STILL FAILS TO START THE PUMP

1. Go to local pump starter panel in Engine room.

2. Change over the pump mode selection switch from

AUTOMATIC to LOCAL.

3. Pump will start, ensure the valve for the affected space/spaces

is/are open.

4. Water mist releases through sprinkler nozzles to suppress the fire

in space concerned.


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NOTE !!!!!In case of electric failure ofsection valve it can be manuallyopened by turning the markedrelease button on the solenoidvalve as shown below.


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Turn to open section valvemanually.

TESTING FOR MAINTENANCE OROPERATION CHECK DURING PORTSTATE INSPECTIONS /AUDITS

1. Testing to be done in rotation to ensure all sections are workingsatisfactorily.

2. Close all outlet valves.

3. Open all test valves.


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Outlet valves Test valves SHUT

Test valve OPEN

4. Release sections in one of following ways:

- Activate two flame detectors of the one protected space for

release.

- Activate SPRINKLER RELEASE BUTTON locally in

protected space.

- From Manual Release Panel at FCS/EHQ, manually

release one section of protected space as explained earlier.


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5. Check that pump starts, correct section valve opens, water being

discharged through drain/test valves & display on fire control

panel indicates WATER MIST SYSTEM RELEASED.

6. Reset the alarm on the FCP.

7. Check that section valve is closed & pump stopped.

8. Close test valve.

9. If required repeat test for other sections.

10.Open all outlet valves.

11. Log down all tests in Log book & NS5.

PREPARED BY : CE SUNIL JAIN

Water Mist System on ship

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