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What is the maximum percentage a fire pump's rated pressure is permitted to produce at churn condition?
Suggested Answer: D
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A fire pump at churn condition (no flow, maximum pressure) is permitted to produce up to 140 percent of its rated pressure. This condition ensures the pump can maintain sufficient pressure in the system during varying demand conditions without exceeding the system's designed pressure limits.
12 comments · newest first
AR
Arlene
1 month ago
I agree with Frederica. 100 percent is the standard.
RO
Rolf
1 month ago
I feel like it could be C) 120 percent. Pumps need some leeway.
FR
Frederica
1 month ago
I think it's B) 100 percent. Seems reasonable.
UN
Una
2 months ago
I agree, 120% sounds about right for churn.
NE
Nettie
2 months ago
Definitely not 65%, that's way too low.
FR
Frank
2 months ago
Wait, can a pump really handle 140%? That seems risky.
NI
Nicolette
2 months ago
I thought it was 100%. Makes sense!
LE
Leah
2 months ago
It's 150% for churn conditions, not listed here.
LA
Lashandra
2 months ago
I thought it was 120 percent, but now I'm second-guessing myself. I should have reviewed that section more thoroughly!
SH
Shawnta
3 months ago
I feel like it might be 140 percent, but that seems high. I need to double-check what I studied about pump ratings.
TY
Tyra
3 months ago
I remember practicing a question like this, and I think the answer was around 100 percent, but I can't recall the specifics.
BR
Bronwyn
3 months ago
I think the churn condition is related to how much pressure a pump can handle without overheating, but I'm not sure about the exact percentage.