FIRE HOSES, NOZZLES AND COUPLINGS

 FIRE HOSES, NOZZLES AND COUPLINGS

Regulations

As per SOLAS II-2/10;

All fire hoses must be at least 10 m in length but maximum length is not more than as follows:

• 15 m in machinery spaces,
• 20 m in other spaces on deck,
• 25 m for open decks on ships with a maximum breadth in excess of 30 m.

There must be one hose and nozzle for each fire hydrants and there shall be complete interchangeability of hose couplings and nozzles.

In cargo ships:

of 1,000 gross tonnage and upwards,

the number of fire hoses to be provided shall be one for each 30 m length of the ship and one spare but in no case less than five in all.

A sample of minimum no. of fire hose distribution on deck of a ship which is more than 1000 GRT, not engaged in carrying dagerous goods.

• This number does not include any hoses required in any engine or boiler room. The Administration may increase the number of hoses required so as to ensure that hoses in sufficient number are available and accessible at all times, having regard to the type of ship and the nature of trade in which the ship is employed.

• Ships carrying dangerous goods  shall be provided with 3 hoses and nozzles, in addition to those required above;

• of less than 1,000 gross tonnage, the number of fire hoses to be provided shall be the same requirement with above except, in no case less than three in all.

  Standard nozzle sizes shall be 12 mm, 16 mm and 19 mm or as near thereto as possible. Larger diameter nozzles may be permitted at the discretion of the Administration. 

• For accommodation and service spaces, a nozzle size greater than 12 mm need not be used. 

• For machinery spaces and exterior locations, the nozzle size shall be such as to obtain the maximum discharge possible from two jets at the pressure required from the smallest pump, provided that a nozzle size greater than 19 mm need not be used. 

• Nozzles shall be of an approved dual-purpose type (i.e., spray/jet type) incorporating a shutoff. 

• What are fire hoses made of?

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Liner covered by jaket(s) 
Source: https://firehosedirect.com/blogs/expert-help/introduction-to-fire-hoses




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  Each fire hose consists of a rubber liner in which the water is carried. However, it cannot witstand the high pressure nor provide resistance to weathering. So that the liner is covered over by single or double jackets made of fabric or rubber.

• Rubber Jacket Fire Hose

• Rubber fire hoses provide extra resistance to chemicals and abrasion. They do not absorb water so that they can be stored when wet. They are also easy to clean. However, they are not good at flexibility when comprared to the fabric hoses. The rubber generally are made out of syntetic nitrile rubber.

• Fabric Single/Double Jacket Fire Hose

• These hoses are made up of polyester or nylon yarns forming jacket out of interior rubber.

• If there is one coat over the interior rubber, it is called ''single jacket''; if there are two coats over the interior rubber, it is called ''double jacket''.

           Polyester fabrics, are very strong, elastic and resistant to mildew and chemicals.

          The nylons can dry easily, have resistance to UV lights, heat, chemicals, abrasion and elastic.

        

            Fire Hose Color

Fire hose color gives additional durability as compared to the white fire hose of the same type because pigments in the color show more resistance to UV radiations.

Fire Hose Repair

If the fire hose breaks at some place, we have to repair it on board. Please be sure that, the length of the fire hose after reapir will be more than 10 m as per SOLAS requirements. 

Please see the video below for tutorial.