5 minute read
Fire Appliances
16
Fire Appliances
Advertisement
16.1 General Requirements
16.1.1 Fire appliances are to be of an approved type and should be provided to meet the minimum requirements listed in Table 1 and the specific requirements of 16.2.
16.1.2 Fire appliances provided in addition to those required by 16.1.1 should be of a type acceptable to the Administration.
16.1.3 The location of concealed fire appliances should be clearly marked.
16.2 Specific Requirements
16.2.1 PROVISION OF WATER JET At least one jet of water, from a single length of hose, should be able to reach any part of the yacht normally accessible to passengers or crew while the yacht is being navigated and, any store room or any part of a storage compartment when empty.
16.2.2 FIRE PUMPS
16.2.2.1 The power driven fire pump should have a capacity of: 2.5×1+0.066×LB+D0.52 m3/hour
Where: L = the length B = the greatest molded breadth D = the molded depth measured to the bulkhead deck at amidships.
When discharging at full capacity through two adjacent fire hydrants, the pump should be capable of maintaining a water pressure of O.2N/mm2 at any hydrant, provided the fire hose can be effectively controlled at this pressure.
16.2.2.2 The second fire pump, which may be portable, should have a capacity of at least 80% of that required by 16.2.2.1 and be capable of input to the fire main. A permanent sea connection, external to the machinery space, should be provided. "Throw-over" sea suctions are not acceptable.
16.2.2.3 Each centrifugal fire pump should be provided with a non-return valve in the connection to the fire main.
16.2.3 FIRE MAIN AND HYDRANTS
16.2.3.1 A fire main, water service pipes and fire hydrants should be fitted.
16.2.3.2 The fire main and water service pipe connections to the hydrants should be sized for the maximum discharge rate of the pump(s) connected to the main.
16.2.3.3 The fire main, water service pipes and fire hydrants should be constructed such that they will: .1 Not be rendered ineffective by heat; .2 Not readily corrode; and .3 Be protected against freezing.
16.2.3.4 When a fire main is supplied by two pumps, one in the machinery space and one elsewhere, provision should be made for isolation of the fire main within the machinery space and for the second pump to supply the fire main and hydrants external to the machinery space. Isolation valve(s) should be manually operated valves fitted outside the machinery space in a position easily accessible in the event of a fire.
16.2.3.5 The fire main should have no connections other than those necessary for fire fighting or washing down.
16.2.3.6 Fire hydrants should be located for easy attachment of fire hoses, protected from damage and distributed so that a single length of the fire hoses provided can reach any part of the yacht.
16.2.3.7 Fire hydrants should be fitted with valves that allow a fire hose to be isolated and removed when a fire pump is operating.
16.2.4 FIRE HOSES
16.2.4.1 Fire hoses should not exceed 18 meters in length and, generally, the diameter of a lined hose for use with a powered pump should not be less than 4Smm.
16.2.4.2 Fire hoses and associated tools and fittings should be kept in readily accessible and known locations, close to the hydrants or connections on which they will be used. Hoses supplied from a powered pump should have jet/spray nozzles (incorporating a shut-off facility) of diameter 19mm, 16mm or 12mm depending on fire fighting purposes. For accommodation and service spaces, the diameter of nozzles need not exceed 12mm. For machinery spaces and exterior locations, the nozzle size should be as to obtain the maximum discharge possible from two jets at the pressure referred to in 16.2.2.1, from the smallest pump.
16.2.4.3 Hydrants or connections in interior locations on the yacht should have hoses connected at all times. For use within accommodation and service spaces, proposals to provide a smaller diameter of hoses and jet/spray nozzles will be considered.
16.2.4.4 The number of fire hoses and nozzles provided should correspond to the functional fire safety requirements, but be at least three.
16.2.5
PORTABLE FIRE EXTINGUISHERS FOR USE IN ACCOMMODATION AND SERVICE SPACES
16.2.5.1 The number, location, fire extinguishing medium type and capacity should be selected according to the perceived fire risk, but for each deck, one portable extinguisher should be available for use within a distance of 10m from any location. A minimum of at least three portable fire extinguishers should be provided. As far as practical, the fire extinguishers provided should have a uniform method of operation and should be of an approved type and capacity.
16.2.5.2 Portable fire extinguishers of the carbon dioxide type should not be located or provided for use in accommodation spaces.
16.2.5.3 Except for portable extinguishers provided in connection with a specific hazard within a space when it is manned (such as a galley), portable extinguishers
generally should be located external to, but adjacent to, the entrance of the space(s) in which they will be used. Extinguishers should be stowed in readily accessible and marked locations.
16.2.5.4 Spare charges should be provided onboard for at least 50% of each type and capacity of portable fire extinguisher onboard. When an extinguisher is not of a type which is rechargeable when the yacht is at sea, an additional portable fire extinguisher of the same type (or its equivalent) should be provided.
16.2.6 FIRE EXTINGUISHING IN MACHINERY SPACES
16.2.6.1 In a machinery space containing internal combustion type machinery, fire appliances should be provided at least to the extent listed in item 7 of Table 1 Fire Appliances.
16.2.6.2 In a machinery space containing an oil fired boiler, oil fuel settling tank or oil fuel unit, a fixed fire extinguishing system complying with the IMO Fire Safety Systems Code should be installed.
16.2.6.3 Portable fire extinguishers should be installed and the number, location, fire extinguishing medium type and capacity should be selected according to the perceived fire risk in the space. (Spare charges or spare extinguishers should be provided per 16.2.5.4.) In any case, portable fire extinguishers for extinguishing oil fires should be fitted: .1 In a boiler room - at least two; .2 In a space containing any part of an oil fuel installation - at least two; and .3 In a firing space - at least one.
