time to fill firefighting tanks
time to fill firefighting tanks
(OP)
what is the maximum available time to fill firefighting tanks?
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time to fill firefighting tanks
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RE: time to fill firefighting tanks
RE: time to fill firefighting tanks
RE: time to fill firefighting tanks
RE: time to fill firefighting tanks
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: time to fill firefighting tanks
Well since insurance companies drive a lot of the codes and standards for the last 100 plus years, they want the tank full to provide fire protection to reduce the loss potential. I am sure the 8 hours time limit was a 3 day debate by the NFPA committee with some wanting no limit and some wanting 2 hour limit. After all the yelling and screaming they all agreed on 8 hours. I say this as being a past member of a NFPA committee.
If you are self insured and the AHJ can live with 48 hours.....more power to you.
RE: time to fill firefighting tanks
I agree.
It doesn't matter how you full it as long as you can do it in 8 hours. Any tank can be filled in 8 hours if you have enough money to hire a fleet of tanker trucks.
RE: time to fill firefighting tanks
RE: time to fill firefighting tanks
There is no need whatsoever to place such an onerous condition for something that happens once or twice in a tanks lifetime (empty to full). I would simply apply to the AHJ stating why filling the tank in that time is ridiculous, but accepting that the tank needs to be full before the facility can be used.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: time to fill firefighting tanks
Yes there needs to be a number, but the tank might be drained for other reasons, and maybe the eight hours is one work day, till the tank is refilled.
And, they do not want a building unprotected for an extended period of time.
RE: time to fill firefighting tanks
Dejan IVANOVIC
Process Engineer, MSChE
RE: time to fill firefighting tanks
Given that number and eight hours what would be the minimum flow to fill it in eight hours??
RE: time to fill firefighting tanks
NFPA 25 requires internal inspection of the tank every 5 years, not too long ago they required the tank to be emptied for the inspection. So in this case it was not something that never happened, it did occur every 5 years.
About the only time I did not enforce the 8 hour time limit was when the tank was for a secondary water supply, where the tank and pump was a backup to the adequate city water supply.
So who put that 8 hour time limit into the standard....the insurance companies and property owners ( they did not want to pay those reinsurance $$$) who were on the committee.
RE: time to fill firefighting tanks
Given that number and eight hours what would be the minimum flow to fill it in eight hours??
It depends on the occupancy and hazard...warehouse with ESFR typically 100K gallons, nonESFR 250+K, power plant where they use process water (cooling) and fire protection in one tank 1 million gallons!