Various types of Fire protection pumps are used in a fire protection systems
Fire Protection Pumps, also called Fire Fighting Pumps or Fire Fighting Systems consist of two basic parts:
1) A specialized pumping system and Fire Pump. Fire pumps include Hydrant or Jacking Pump, Vertical Turbine Pump, Vertical Split case and end suction pump. (These fire pumps are controlled by an Electric or Diesel Controller).
2) A large water storage tank. Water storage ideally builds on top of the building or underground. It is also referred to as afire water storage tank.
A fire hydrant is a vertical steel pipe with an outlet, close to which two fire hoses are stored (A fire hydrant is called a fire hydrant booster pump or fire water pump in Australia). During a fire, firefighters will go to the outlet, break open the hoses, attach one to the outlet, and manually open it so that water rushes out of the nozzle of the hose. The quantity and speed of the water are so great that it can knock over the firefighter holding the hose if he is not standing in the correct way. As soon as the firefighter opens the hydrant, water will gush out, and sensors will detect a drop in pressure in the system. This drop in pressure will trigger the fire pumps to turn on and start pumping water at a tremendous flow rate.
DIESEL OR ELECTRIC CONTROLLER
Fire pump controllers are designed to start an electric motor driven fire pump. It can either start the fire pump manually through the local start push button or automatically through the sensing of a pressure drop in the sprinkler system. The fire pump controller is supplied with a pressure transducer. The fire pump can be stopped manually with the local stop push button or automatically after the expiration of a field programmable timer. In both cases, stopping is only allowed if all starting causes have disappeared.
FIRE STORAGE TANKS
Storage tanks are designsdiffer depending on hazard level and project location. As per Australian standard Hazard Levels to AS 4343, all commercial and industrial building is divided into five categories. The relevant building code will apply to build fire water tank.
The water is usually stored in concrete underground tanks or steel storage tanks. This type of tanks holds large capacities of water for heavy-duty building services, agricultural and industrial uses. Designers will also try and ensure that the water in the fire tanks does not get stagnant and develop algae, which could clog the pipes and pumps, rendering the system useless in a fire.
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