Fire pump in a high rise
I’m looking for some insight into NFPA20 - 2016. I don’t have the handbook to see any commentary.
Looking at 5.5, it looks to me like I need to connect my pump to a backup generator or provide a backup pump. I don’t have the option to install a second pump. But I see 9.3.1 that says at least one alternative source of power shall be provided for the high rise buildings or where the height of the structure is beyond pumping capabilities of the fire dept. I don’t see a way to get from 5.5 to 9.3.1 but I have an engineer saying because of 9.3.1 I don’t need to connect to a generator. I don’t see a way around it and I was hoping somebody with the handbook or some more experience with electric drive pumps in high rises might give more insight. There is an option to provide a second reliable feed into the building from the utility.
5.5 specifically points to 9.6 that quite directly requires that it’s connected to a backup on site generator. 9.6 doesn’t have a path to 9.3, so I’m looking at those as entirely separate requirements.