NEC Hazardous Area Classification

[ePOWEReng]

I am an employee of a company that designs, builds, and performs testing on large LPG/LNG pumps. I am trying to classify the hazarous areas around the test stand, the storage tanks and the transfer area, but am having trouble finding solid references. The NEC says in reference to Class I, Division II locations; "The classification usually includes locations where volatile flammable liquids or flammable gases or vapors are used but that in the judgement of the authority having jurisdiction, would become hazardous only in case of an accident or of some unusual operating condition." -- This brings to question, "Who is the local authority?!?!?!". I have tried the fire marshall for the city, and the city inspectors and they don't want to provide any input. Help anybody????

 

[advidana]

Don't feel lost, a lot of people don't know the lp code. Use the NFPA 58 "Liquefied petroleum Gas Code" and the associated Handook. They cost me $107 in 2001 and it was well worth it. Most hazardous unformation is hard to come by because it a very specialized field. This code book has a lot of pictures imcluded with separation distances requirements shown for lp and the hand book has even more information which helps a lot. Call NFPA to order the books.

 

[advidana]

This brings to question, "Who is the local authority?!?!?!". I have tried the fire marshall for the city, and the city inspectors and they don't want to provide any input. Help anybody????-
Check with the insurance company covering your facility they should know.

 

[waross]

Who will inspect the work? If there is a permit and an inspection required, the permiting and inspecting body should be able to inform you what standard they will inspect to.
As stated by advidana, the insurance company may have requirements in addition to NEC requirements.
respectfully