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NFPA 54, 58 question.....

NFPA 54, 58 question.....

NFPA 54, 58 question.....

(OP)
I'm at an industrial job site and don't have my 54, 58 or 59 with me...(Safe at home..lol)...I'm installing a propane vaporizer and I know that 5 psig is max pressure for propane to enter a building unless there are "special" conditions (welded pipe, etc...) that will allow me to go up to a max 20 psig. I've got an engineer who insists I can go higher...I would like to quote him the exact code (NFPA ? , section ? and page ?) that references pressure into buildings and put an end to this minor dispute....I think he has a line loss issue and that may have to be addressed as well...This is a good place to start...Any help would be MOST appreciated :)....Lee

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