1st time user,
New construction, 300 apt. residence, ordinary, sprinklers, 6 storys, not a high rise.
This building has a generator. The Utility qualifies as a reliable source.
Is the Fire Pump required to be connected to the emergency generator?#
Which building and fire code do you have adopted?? and year.
So they are providing a generator already??
If so I would say hook it up.
What is it powering anyway?
OHHH I am not an engineer, so you can discount my reply if you want, and I cannot do math.
(1) IBC 2015 NJ edition --- NFPA 13 & 72 2013
(2) Only to emergency systems ie: fire detection, egress lighting.
(3) I agree but it is a considerable amount of work and cost to upgrade the generation system.
(4) Detection, egress, elevators
Interesting, The fire alarm should already have battery back up, and the
Lighting may or may not have battery back up?
I guess someone sold them a generator.
They do, they provide support during the generator transition time. Elevators are also protected.
It's not required by NFPA 20 for non high-rise's fire pumps to connect to a secondary source when the primary source is considered reliable. See NFPA 20 section 9.3. Usually a primary source is considered reliable is if it is unavailable no more than 8 hours per year.
I do think that if the construction is in a disaster prone area and budget allows, it should also be connected to an emergency generator even if the primary is considered reliable.
I agree, thank you.
It has been many years since I designed a fire pump installation, but as I recall, it has to be on a separate service and any generator supplying it has to be standalone; i.e., it cannot have the life safety equipment attached to it. If a generator is being supplied that was intended only for the life safety equipment during design, it is probably not large enough to carry the fire pump. First, it has to be able to supply the starting current of the motor; and second, it has to be able to withstand the locked-rotor current of the motor long enough for the fuses/breaker to clear that overload. And there are special requirements for sizing the fuses supplying the pump motor. Essentially, it is designed to almost "burn-down" the system before removing power.
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