13. Fire Fighting System in ER [Compatibility Mode].pdf

02 September 2009

13. Fire Fighting System in E/R

Course

No.

2004

© Det Norske Veritas AS. All rights reserved.

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� Purpose of the rules and regulations;

Fire Fighting System - E/R

� To effectively control and extinguish fires


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� The following systems are required;


1. Fire water system with hydrant valves and hoses with nozzles.

2. Fixed fire extinguishing system

- A gas system (CO2)

- A high expansion foam system

- A water spraying system

If there is provided two type of fixed fire extinguishing system in E/R, what to be consider?


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� The following systems are required;


3. Fixed local fire extinguishing system covering:

SOLAS 2000Amendments, applicable for cat. A machinery spaces above 500 m3

4. Portable fire extinguishers : to be provided acc. to MSC.1/Circ.1275

- Boiler fronts

- Fire hazard portions of incinerators

- Purifiers for heated fuel oil

- Main and aux. engines


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� Arrangement and number of fire pumps ;


If both pumps are located in the same compartment (E.G. E/R), an independently driven emergency fire pump is to be provide in another compartment.

− Cargo ships of 1000 GRT and above is to be provided with two independently driven fire pumps.


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− Minimum total capacity for the main fire pumps ;

QF = 4/3 × QBP, QBP - bilge pump capacity

− Capacity of each fire pump ;

N - Number of required fire pumps.− Capacity of emergency fire pump ;

QEFP ≥ 4/3 × QBP × 0.4QEFP ≥ 25 m³/h

For cargo ships QF need not exceed 180 m³/h, but in no case less than 25m³/h.

� Arrangement and number of fire pumps ;

4/3 × QBP × 0.8NQFP ≥


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� Number and position of hydrants ;

� The number and position of hydrants shall be such that at least two jets of water not emanating from the same hydrant, one of which shall be from a single length hose, may reach any part of the engine room.

� The hydrants should be positioned near the accesses to the protected spaces.



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� Fire Hoses ;

� Each hose shall be provided with a nozzle and the necessary couplings.

� Fire hose shall have a length of at least 10m, but not more than 15m for machinery spaces.

� Common practice to provide 1 hose for each hydrant in E/R

Fire mains and hydrants with fire hoses

HB

HB

HB

HB

HB

HBHB

Port side acc. branch

Emergency fire pump Main fire pumps

Engine room

Steering gear & emergency fire pump room

HB

HB

HB


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� CO2 HP fire extinguishing sys. for machinery spaces.

� The CO2 bottles shall be stored in a readily accessible room outside the protected space(s).

� Automatic release of CO2 is not accepted.

� Pre-discharge alarm must be provided.To operate for the time required to evacuate the space, but not less than 20s.

� Means for release shall be grouped together in few locations outside the protected spaces

− .


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1. Discharge the CO2 from the bottles

2. Opening the master valve for the space.

− Two separate controls should be provided.

� CO2 HP fire extinguishing sys. for machinery spaces.

− The fixed piping system shall be such that 85% of the required CO2 can be discharged into the E/R within 2 minutes.

− Required quantity of CO2 : the larger of the following:

1. 35% of the gross volume of the engine room including the casing.

2. 40% of the gross volume of the engine room, excluding:

The casing above the level at which the horizontal area of the casing is 40% or less or the horizontal area of the E/R taken midway between the tank top and the lowest part of the casing.


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� CO2 HP fire extinguishing system for machinery spaces.

V × 0.35/0.4 [kg]0.56

M =

N = M/45 [number of 45kg bottles]

Typical arrangement HP CO2 system

PUMPROOM

CO2 ROOM

TO OPEN AIR

TDTD

E/R

ALARMALARM

TO E/R CO2 NOZZLES

PUM P ROOM

VENT STOPALARM

PUMP ROOM

E/RFIR CONTROL STATION


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Engine Room Vent Fan

Main control panel for E/R space closing damper


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Engine Room Funnel louver damper


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Engine Room Vent Fan damper


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� High expansion foam systems:

� Only hot foam systems, using inside air to generate form, is used for machinery spaces today.

� The system must have been successfully tested according to IMO MSC/Circ. 668, Part B.

� Design requirements such as:

- Foam in-mix concentration & foam type

- Filling rate

- Foam generator capacity/design/arrangement

To be according to test documentation/certificate.The foam generator and foam concentrate must be of approved (i.e. certified) type.


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− The generators should be evenly distributed.

Where the engine room is divided into separate spaces (e.g. workshop, purifier room, ECR, etc.) each space must be provided with foam generator(s).


− The Arrangement in the engine room is to be such that possible overpressure generated by the fire and application of foam can be relieved.

E.g. by keeping exhaust ventilation louvres in the casing open during foam application.

− The quantity of foam concentrate available shall be sufficient to produce a volume of foam equal to five times the volume of the space protected.


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− The expansion ratio of the foam shall not exceed 1,000 to 1.


− The capacity of the system is to be sufficient to fill the whole space to the level of the main deck in course of maximum 10 minutes.

− The emergency fire pump capacity :

Supply foam generators with sufficient water for maximum production

+Water for 2 hydrants(min.25m3/h)

For the type approved hot foam systems the expansion ratio is 620-660 : 1.

Easier flow-out/distribution.

Typical arrangement high expansion foam system

E/R

FOAM TANK

TO E/RFOAM GENERATORS

EMERGENCYFIRE PUMP

FIREMAIN

FOAMROOM

PUMP ROOMEMERGENCY FIREPUMP ROOM

MAIN FIRE PUMPS

FOAMPUMP


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• SOLAS 2000 AMENDMENTS

SOLAS CH. II-2,

REGULATION 10.5.6

FIXED LOCAL APPLICATION

FIRE FIGHTING SYSTEM


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• Fixed Local Application Fire Fighting System

Applicable for :

− Passenger Ships of 2000GRT and above constructed before 1 July 2002, provided that such ships comply with the requirements not later than 1 October 2005.

− NIS/NOR Flag passenger vessel 2000

− Machinery spaces of category A above 500m³ in gross volume.

− Passenger Ships of 500GRT and above and cargo ships of 2000GRT and above constructed on or after 1 July 2002.


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− E0, system to have both automatic and Manual release capabilities.

− Visual and Distinct Audible Alarm in protected Space and Continuously Manned Stations.

− The Alarm shall indicate the Specific System Activated

− Fire Fighting Medium is not to Endanger Life.

• Characteristics


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− Boiler fronts

− Fire hazard portions of incinerators

− Purifiers for heated fuel oil

− Fire hazard portions of internal combustion machinery used for the ships main propulsion and power generation (i.e. main and aux. engines.)

• Coverage


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� Fixed local application fire fighting systems ;


− The system must have been successfully tested according to IMO MSC/Circ.913.

− Design requirements such as ;- Detailed nozzle arrangement- Minimum operation pressure- Nozzle types (k-factor , Q = k × p )- System components

To be according to test documentation/certificate.

½

SKETCH LOCAL WATER FOG SYSTEM

* MIN. 20 MINOPERATION

LCB

AD

FLAME DETECTOR

SMOKE DETECTOR

LOCAL RELEASE

ALARM HORN

ADLCB

12 12

20 20

LCB

ADLCB

12 12

20 20

ADLCB

20 20

LCB

20 20

ADLCB

ADLCB

12

M

M

M

M

M

M

M

P

M

DRAIN

25A

FW TK

LS

DRAIN

15A

15A AIRTEST

CONNECTION

25A50A ST

15A

15A

15A

20A

15A

15A

15A

15A

TESTLINE

INCINERATOR AREA

AUX. BOILER AREA

MAIN ENGINE AREA

NO. 1, 2, 3 D/G ENG. AREA

HYD. POWER PACKENG. AREA

I.G.G AREA

HFO PURIFIER AREA

HIGH PRESSURE PUMP

ENGINE ROOM

NO

15A

AD

AD

GEN. SERVICE

NO*


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Local Fire Fighting Remote Control


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Local Fire Fighting System Pump


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Local Fire Fighting System V/V Block


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� Fire extinguishers;

− All fire extinguishers shall be of approved types (i.e., certified.)

− Designs shall be based upon IMO Resolution A.602(15).

Basic requirements:


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� Definition portable foam applicator unit;


− Consist of a foam nozzle of an inductor type.

− Capable of being connected to the fire main by a fire hose.

− One 20l foam tank plus one space.

− The nozzle shall produce effective foam at the rate of at least 1.5m³/min.


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� Spaces containing both oil fired boilers and internal combustion machinery;


Equipment required Location

1 portable foam applicator unit Nearby boilers/combustion machineryNearby hydrant valve

45l foam extinguisher with hose or reel (1) In each space containing internal combustionmachinery

9l foam extinguishers

In each space containing internal combustionmachinery. Located so that no point is more than10m walking distance from an extinguisher.The number not to be less than 2.

9l foam extinguishers (≥ 2) In each boiler firing space

135l foam extinguisher with hose or reel (1) In each boiler firing space

A receptacle containing at least 0.1m3 sand,sawdust impregnated with soda, or otherapproved material.An approved portable extinguisher may beaccepted as an alternative.

In each boiler firing space


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� Equivalents :


25 kg dry power

20 kg CO2

45l foam


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� References;


- SOLAS 2000 Amendments Ch.II-2 Reg.10

- International Code for Fire Safety Systems Ch.4/5/6

- SOLAS 1974 as amended Ch.II-2 Reg.4/5/6/7/9

- IMO MSC/Circ.688 Part B

- IMO Resolution A.602(15)

- IACS F35

- DNV Rules for Ships Pt.4 Ch.1 Sec.3 A400


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Case 12; Please review the below design as to acceptability. Present your comments, if any.


PORT SIDEACC. BRANCH

EMERGENCYFIRE PUMP MAIN FIRE PUMPS

ENGINE ROOMSTEERING GEAR & EMERGENCY FIRE PUMPROOM

13. Fire Fighting System in ER [Compatibility Mode].pdf

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