Review some old ISA standards in the RP 60 series RP 60.1, 60.3, 60.8, 60.9 etc.
Several NFPA standards apply such as 70, 70E, 72, 780, especially 90 A & B on HVAC, 91 on exhaust systems, 101, 220 on the construction, 251, 255, 496 on pressurization, etc.
The applicable building code.
Also look at some of the threads related to blast resistant construction and recent posts regarding the trailers located too near the process at a recent plant explosion, etc.
