# How do I know what size fire pump I need?

## How do I know what size fire pump I need?

For example, if you have a 40,000-square-foot building that is all ordinary group 1, the calculation would be 1,500 x 0.15 (density) = 225 + 250 (hose demand) = 475 gpm total for the fire pump. If the structure has multiple hazards, the hazard with the highest gpm calculation dictates the pump size.

How often should a fire pump be serviced?

Fire Pump Maintenance and Service According to NFPA 25, fire pumps must be tested on both a monthly and annual basis to ensure that they will perform as designed.

What is the difference between a fire pump and booster pump?

A fire pump services standpipes, not to be confused with a sprinkler booster pump which serves only sprinklers. Fire pumps are substantially larger than sprinkler booster pumps. Standpipes are required per BC 905 when: The building is 2 or more stories with a floor area of 10,000 ft2 or greater on any floor.

### What is the standard pressure of fire pump?

Fire pumps are rated by the manufacturer to produce a certain amount of net pressure (typically between 40 and 250 psi) at their rated flow. It is important to note that the rated net pressure usually only occurs at the rated flow of the pump.

How do you size a fire jockey pump?

Simply stated sizing is 1% of the fire pump’s flow and 110 % of the fire pump’s head. For example, if the Aurora Fire Pump System which is selected is rated 500 gallons per minute at 100 psi, the jockey pump needs to handle 5 gallons per minute at 110 psi.

Does a fire pump require a generator?

An onsite generator must provide the secondary source of power for the fire pump. The service to the fire pump will need to meet the requirements as defined by NFPA 70: National Electrical Code (NEC) 695.3(B)(2) for service from an individual source and onsite standby generator.

## How do you test a diesel fire pump?

DIESEL FIRE PUMP WEEKLY TEST PROCEDURE The pump should be run a minimum of 30 minutes. Record the pressure at which the pump automatically started. Observe how long it takes the engine to crank and once started how long it takes to reach running speed. Record the pump suction and discharge pressures.

Is NFPA 25 mandatory?

In conclusion, NFPA 25 is mandatory, but the specific requirements vary depending on your location. Regardless of how severe the penalty could be, it is in a building owner or manager’s best interest to ensure the fire protection system is working properly.

Is jockey pump a booster pump?

Although jockey pump and booster pump are both a kind of pressurization facilities, jockey pump operation in sprinkler head and hydrant did not flow, the booster pump work in sprinkler head and hydrant has been out of water, and the water pressure of fire water is insufficient, need to increase the water pressure.

### How do you pick a jockey pump?

“The pump manufacturer, Armstrong pumps, recommends, as a rule of thumb, to size the jockey for about 1 % of the rated flow of the main fire water pump. Also they recommend that jockey to be sized with 10 psi (0.7 bar) higher pressure than the system design pressure of the firewater ring.”

Are jockey pumps required to be on emergency power?

Also, please confirm the Jockey pump does not require backup power.

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