Quote:
Originally Posted by redpoint5
Unlikely it would blow up much more than whatever was very local. The gas diffuses quickly in open air. It really has to be trapped to accumulate to explosive levels.
My wife sometimes leaves a burner on but not burning. Whenever the sitter smells the faintest amount of NG odor, she opens all the windows and leaves the house, as if it's going to blow up.
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4-15%
It's got a hell of a smell in large quantities, with a good sniffer it is impossible to ignore.
My previous job we did studies to determine how close the gas meter/regulator could be installed to other home features. I don't recall what the final measurement was but we learned that NG does infact dissipate very quickly in open air.
Propane on the other hand is heavier than air and will flow like water... except it's invisible. I.e., don't store propane tanks or gasoline in your basement.