Sprinkler system & sprinkler head.

Sprinkler System:

1.    By Regulation, passenger ships carrying more than 36 persons shall be provided with Automatic Sprinkler System.

2.    Generally used only to protect living quarters, passageways and public spaces.

Operation:

a)        Each sprinkler head provided with a quartzoid valve, which seals the outlet of water pipe.

b)       Valve is partially filled with special fluid, so that a rise in room temperature will expand the liquid and the valve will burst.

c)        Water under pressure; will flow out from Sprinkler System. [ 5 – 8 bars pressure is maintained in FW pressure tank by air pressure.]

d)       Sprinkler head can cover a floor area of about  12m² with water pressure of  5 – 8 bars.

e)        Pressure drop in tank activates the pumps to take over and supply water from FW holding tank. When holding tank become empty, SW pumps come into action automatically. 

Rules:

1.    No: of heads not more than 200 per section.

2.    Heads are spaced not more than 4 meters apart.

3.    At least 2 sources of power supply to Automatic alarm system and SW pump.

Advantages:

1.    Self fire detection, and immediate and automatic operation at all time

2.    Not harmful to human.

3.    No need to seal the space.

4.    No need to clean the media, after use.

Various sprinkler head colour: Red    Yellow     Green         Blue          Purple

Quartzoid valve will burst at:   68°C     80°C      93°C         141°C        182°C