3500 KVA Mineral Oil Transformer installed indoors temporarily

[scrub12]

I have a temporary installation of a 3500KVA mineral oil transformer installed indoors in a mechanical room. This needs to be done temporarily until a permanent transformer can be purchased to replace an existing system. Are there any exceptions to the rental transformer being installed indoors not in a dedicated transformer vault? If there isn't, is the best solution to either install outdoors or build a 1hr fire rated room around the transformer and run a sprinkler line into the room for the exception to the 3-Hour fire rating requirement?

Thanks for the assistance in advance!

 

[jim dungar]

No exceptions.
These are questions whose answers should involve the facility's insurance company.

 

[petersonra]

I would be looking to install it outside.

 

[scrub12]

Thanks all.