Explosion proof

[guschash]

Just got a call for an estimate for a job and he everything has to have explosion proof fitting. I have only worked with explosion fitting one other time and it was a long time ago. Could use some advise on what to look for and how to price the job. Any help is always appreciate.

Thanks

 

[WorkSafe]

This question should probably be in the "classified location" forum?

What classification are they wanting you to install at?