In Section 6.2.1 & A.6.2.1 does the pump running without interruption intend to not have the water supply interrupted or does that intend that the power supply to the pump be on an emergency generator or both?
Will have to look at that section
Normally unless it has changed, a 13d does not require power back up
There is only a certain amount of water/ minutes required
Fire pumps are meant to be sacrificed, they run till someone shuts them off, or quit for what ever reason
Maybe restate your question
Water supply requirement,,, this is what you need, and no extra::
6.1.2 Where stored water is used as the sole source of supply, the minimum quantity shall equal the water demand rate times 10 minutes unless permitted otherwise by 6.1.3. 6.1.3 Where stored water is used as the sole source of supply, the minimum quantity shall be permitted to equal the two sprinkler water demand rate times 7 minutes where dwelling units meet the following criteria:
Not sure why it says 240??
6.2.2 Where a pump and tank is the source of supply for a fire sprinkler system but is not a portion of the domestic water system, the following shall be met:
Not seeing anything else??
13D:6.2.1* Prior to system acceptance, a system utilizing a pumpshall be tested by opening the drain/test connection.13D:18.104.22.168 The pump shall sense the flow, turn on, and flow waterfor the required duration of 6.1.2 or 6.1.3 without interruption.
13D:A.6.2.1 The flow of water is necessary to make sure that thepump does not get damaged during testing. Use of a timer tokeep the pump running is not recommended because thetimer will allow the pump to run when no water is flowing. Thepump needs to run for the entire duration without interruption,including not tripping the circuit breaker.
Question: In Section 6.2.1 & A.6.2.1 does the pump running without interruption intend to not have the water supply interrupted or does that intend that the power supply to the pump be on an emergency generator or both?
Thanks cda cda. The question; If the pump is to run and flow water "without interruption" for the test duration for 10 minutes or 7 minutes, does not matter, whether supply is from a correctly sized tank or public water, does the code section 6.2.1 & A.6.2.1 intend the water supply to not be interrupted? Second part of the question, if the water supply is not interrupted and the pump is running for the test duration, or worst case, during a real fire, does the pump power supply need to be on an emergency generator?
Is this for your own house???
Only systems I have done, are connected to the city water supply.
So if you are doing a tank or well, it needs to have the gallons required to meet the minute duration required.
So I take it
1. you open the valve
2. the pump is supposed to come on by itself
3. you flow water for at least the minimum duration
4. end of test if all above happen.
I would say no back up power is not required. Now if you live in the boonies, and the electrical is not reliable, you might consider it. I guess it assumed that you have good power.
Not my own house even though I did sprinkler my own house.
After more research and talking to pump manufacturers there is no provision in NFPA 13D that requries back up power for NFPA 13D residential fire sprinklers systems.
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