Based on NFPA,how door fire rating can be reduced if fire system there

[jhonsmit73]

I have three wooden doors with fire rating of 45min. These doors are for electrical/instrument shop (max. 220V), mechanical shop and equipment storage. These rooms are inside a building located in gas plant. All rooms are for light duty and minor work.
We received a request to change all to be 90min fire resistance while I think this is too much for such building.
As we installed smoke detectors and fire alarm system in the building, dose this justify keeping these doors with 45min fire rating.
I would appreciate if someone could help to resolve this issue or if I could have the NFPA doc. that support keeping these doors as fire system installed.

 

[cdafd]

Do not think a sprinkler system will let you reduce door rating,

Normaly it is based on the rating of the fire wall, or the use of the room.

Do you know what building code and edition you are under???

"""We received a request to change """

1. who requested it???

2. What code and section did they site for the request???

 

[Arsnman4]

There are no allowences for a reduction in door assembly ratings without fire sprinklers. If you had sprinkler protection there are available reduction allowances in NFPA 101, 2006 40.3.2.4 and 8.7.1.3

"Fire suppression is a failure in prevention"