What is a fire pump?
Fire pumps are part of the water supply of a fire sprinkler system and are powered by electricity, diesel or steam. or still water sources (eg water tanks, reservoirs, lakes), the pump supplies water at higher pressure to the sprinkler system risers and hoses. Fire pumps are tested and listed for use specifically for the fire service by a third party testing and listing agency such as UL or FM Global. The main code governing North American fire pump installations is The National Fire Protection Association's NFPA 20 standard for stationary fire pump installations for fire protection.
The fire pump is operated by an electric motor or diesel engine. or steam turbines sometimes If local building codes require electricity to be used independently of the local grid. An electric motor operated pump may be used when connected via a specified transfer switch in an emergency generator installation.
How does a fire pump work?
The fire pump begins when the strain in the fire sprinkler framework dips under the limit. The pressure of the sprinkler system is greatly reduced when one or more sprinkler heads are heated above the designed temperature. and opened it and released the water. Alternatively, open the other fire hose reels or other fire connections, causing the fire mains pressure to drop.
When is it necessary to use a fire pump?
A fire pump is needed when the local water supply system cannot provide enough pressure to meet the hydraulic design requirements of a fire sprinkler system. This usually occurs if the building is very tall, such as in a tall building, or in a system requiring relatively high working pressure at the most remote location. In order to have a large volume of water, such as a warehouse, a fire pump is needed if fire protection water is supplied from a ground-level water tank.
If there is a fire pump, when should it be inspected?
during the annual test Your device will be in the “off” position, many problems will be invisible when the pump and controller are in the mechanical chamber and not working. Just use your device as part of the weekly test. Many potentially serious problems can be discovered and fixed immediately.
Most fire pumps are either electric motor driven or diesel engine driven. Also the sort and recurrence of testing will shift contingent upon what you have in your structure. For electric fire pumps It is recommended that the device be used at least once a week for at least ten (10) minutes for visual inspection and 30 minutes per week for diesel fire pumps. During this test — simply see the device in action and have a qualified operator deal with any potential issues. Some might point out that NFPA 25 allows monthly testing in some cases. In any case, we will forever suggest a straightforward week by week test. due to the importance of equipment
NFPA 25 requires fire pump flow tests once a year to measure pump flow and pressure. The test should be carried out with a hose attached to the discharge probe. The hose is directed to a safe location where the water flow will not damage it. Pressure readings are taken as the pump is run through different stages at I.F. Wilson Fire Protection Ltd. Results are recorded and plotted on graphs by our engineering department. These test results are compared with factory specifications and test results from the previous year. If the efficiency of the pump is greatly reduced Additional inspections are required to make necessary repairs.