Fire hydrant system is one of
fire protection system in power plant. An underground fire hydrant ring main
facility shall be provided. Strategically placed indoor hydrant system, outdoor
hydrant system and water hose station connections shall be provided on the
system to suit the site / plant / building configuration. The tire hydrant
protection system would be arranged to draw water from raw water storage tanks,
the hydrant pumps shall comprise of electric motor driven pump and diesel
engine driven water pump.
The hydrant pumps shall be sized
to accommodate the use of the main in two separate site areas during an
emergency and shall be operationally continuously rated. A re-circulation line
for pump test shall be installed in each pump.
A jockey pump and motor unit
shall be provided to maintain the pressure in the fire main. An air filled
pressure sustaining vessel shall be provided to reduce the operating cycle of
the jockey pump. Each of the fire hoses shall be provided with instantaneous
coupling with male and female coupling at opposite ends and shall be compatible
with common standard fire appliance connections.
The fire protection zones shall
be numbered generally in accordance with the format described in Exhibit. External
Pressurized Hydrant System (Yard Hydrant) shall be provided and designed with
reference to the latest edition of NFPA 14, NFPA 24 and NFPA 850. The water
supply of the system is tapped from the fire main ring. The water canon hydrant
shall be provided in the fuel oil tank area. The Guard Rail shall be provided
for Hydrant near the road.
Indoor Hydrant shall be provided
and designed with reference to the latest edition of NFPA 14. The water supply
of the system is tapped from the nearest external fire main ring.
Some hydrant ring mains should be
given and overall power plant region should be surely split amidst these ring
mains which should be interconnected by using isolation valves. It should be
doable to allow undertaking component of any of the ring mains intended for
repair with no any damage of process in the balance aspect.
The following area should be
equipped with fire hydrant system:
- Steam boiler
- Turbine building
- Coal handling plant
- ESP (Electro Static Precipitator)
- Transfer point, etc.
1 comment:
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