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Is it necessary to to stop the jockey pump if the electrical pump is in operation during a fire condition?

Fire Safety Firefighting
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Question added by Naveen Vallekadavil , Mechanical Engineer , AECOM Middleeast
Date Posted: 2016/03/14
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Christopher Thomas
by Christopher Thomas , Owner/ Fire Protection Consultant , FPE Professionals

Not necessarily.

  • The jockey pump stop point should equal the pump churn pressure plus the minimum static supply pressure.
  • The jockey pump start point should be at least 10 psi (0.68 bar) less than the jockey pump stop point.
  • The fire pump start point should be 5 psi (0.34 bar) less than the jockey pump start point.

It is theoretically possible for both to remain in operation since there is a overlap between the start and stop pressures of each.

 

Cheers.

Shafique rehman

certainly it is necessary to stop.....

 

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