Fire hydrant system

This is about fire hydrant used by fire fighters.

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2. Fire hydrant pump working Farah naz 15-NTU-0036

3. WHAT IS FIRE HYDRANT system ? Fire hydrant pump systems are widely known as Fire pumps Hydrant boosters Fire water pumps Features: High pressure system, specially intended to enhance the fire fighting power in case building is set on fire 3

4. Fire hydrant system A fire hydrant system is a safety measure or emergency equipment required in some buildings that comprises a series of components that when assembled together provide a source of water to assist fire authorities in a fire. 4

5. Types of Hydrants 5 Dry riser hydrants Used where temperatures are expected to fall Valve of the hydrant place in the base of a hydrant, to prevent water from freezing Wet riser hydrants used in locations where temperatures don’t drop below the freezing point These hydrants always have water in the barrel and after each use

6. Working principle of fire hydrant pump The drop in water pressure is detected by a pressure switch which in turn starts the booster pump drawing water from the water supply to increase the water pressure of the system Water from the hydrant is then directed through the layflat fire hose to a nozzle which is then directed to the seat of a fire The user attaches a hose to the fire hydrant, then opens a valve on the hydrant to provide a powerful flow of water, on the order of 350 kPa (50 pounds per square inch gauge (psig)) This pressure varies according to region and depends on various factors including the size and location of the attached water main). 6

7. Components Pumps Jockey pump Electrical pump Diesel pump Heavy or medium grade pipes Hydrant valves Hose boxes Hoses Nozzles & branch pipes Fire brigade inlet Isolation valves Air release valve 7

8. Components 8

9. Water supply and storage A water supply for a fire hydrant system can be derived from a reliable source of water such as; street mains, static water supply such as a tank or dam.

10. Pipe works and valves To direct the water from its point of origin (supply) to its destination (hydrant valve) requires a series of interconnected pipes at defined size

11. A point of attachment for the fire brigade to provide additional water to a fire hydrant system in in the event of an emergency 11 Fire Brigade Booster

12. Booster pump set 12 In some circumstances where the a hydraulic analysis has determined that the water supply is insufficient for the building requirements, one or more booster pump sets may be require

13. Hydrant 13 The end-point of a fire hydrant system is the Hydrant (also known as a Hydrant Valve, Landing Valve or Millcock ) strategically located throughout a building in accordance with the provisions of AS2419

14. Lay flat Fire Hose 14 A lay flat fire hose is a flexible hose and nozzle that may be connected to a hydrant.

15. Jockey pump Also known as a pressure maintenance pump A small apparatus works together with a fire pump as part of a fire protection sprinkler system Designed to keep pressure in the system elevated to a specific level when the system is not in use Also prevent system from damage when a fire happens and water rushes into the pipes 15

16. Working of Jockey Pump Fire Sprinkle system It consists of Pipes with pressurized water Head, work according to temperature 16

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