This table does not mandate sprinkler protection. However, the requirement for sprinklers may be dependent on the occupancy classification.
It would be helpful to the community if we knew the occupancy classification of the building housing the pump room if not a ancillary structure.
Hi Mr.Milton :
Actually the Occupancy Clssification for the building is Extra Hazard Group 1 with 6 transformers of 63 MVA protected by water spray system & the Pump room is a ancillary structure .
The high hazard industrial occupancies (Ch 40 of the Life Safety Code) requires protection by a supervised automatic extinguishment system. I would say if the fire pump room was housed in the same structure as the high hazard industrial occupancy, then that room would require protection by the supervised automatic extinguishment system and a 1-hour fire rated separation (Table 220.127.116.11.2). If the fire pump was in a detached structure from the building housing the high hazard industrial occupancy, then a 2-hour fire rated separation or at least 50 feet separation distance per Table 18.104.22.168.2.
I am presuming the buildings are existing. One option is to avoid an extinguishment system for the fire pump:
If the fire pump building is less than 50 feet distance from the high hazard building then a 2-hour fire rated separation could be a free standing wall between the two buildings (or at one of the exterior building walls) extended horizontally so all parts of either of the buildings is linearly exposed to each other 50 feet or more.
Based on above, it may be more prudent to add the automatic extinguishment system in the fire pump building.
Refer to Life Safety Code:
I am wondering if other community members may have comments.
As per 22.214.171.124 & 126.96.36.199 how we can avoid automatic sprinkler system in Pumproom if it is detached or not & it is contrary for Table 188.8.131.52.2.
I misunderstood the occupancy classification and gave you information based on industrial occupancies of the Life Safety Code. Sorry for the confusion.
Advisory language was added to NFPA 20, Standard for the Installation of Stationary Pumps for Fire Protection to explicitly state that the purpose for the “Not Sprinklered” heading in the table is to identify the type of fire protection for the fire pump in unsprinklered buildings—that is, the pump room needs to be separated from the remainder of the building by 2-hour-rated construction, or the pump house needs to be located at least 50 ft from the building served by the pump house. The purpose of the heading is not to provide an exception for omitting sprinklers in the fire pump room in fully sprinklered buildings. Referencing Section 184.108.40.206.2 the application of Table 220.127.116.11.2 is for fire pump room in a non-high-rise building or physically separated fire pump rooms.
The only possible way to avoid sprinklered fire pump rooms may be to use a detached fire pump room with an electric driver. This choice could be complicated by the provisions of an emergency power source. If an emergency power source is not available on the site, then it may be prudent to use a diesel engine and sprinkler the pump room per Section 18.104.22.168. A question here is; Does the detached structure housing the electric driven fire pump require a sprinkler system by the building code?
Otherwise, if you are using a diesel engine, there is no question that the fire pump room must be protected with an automatic sprinkler system designed for the water density of extra hazard group 2 per Section 22.214.171.124.
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