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  1. #24
    Join Date
    Mar 2013
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    USA
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    I am also confused as to when would I use the classification areas laid out in NFPA 30, and when would I go through a complete analysis as described in NFPA 497. NFPA 30 defines the hazardous area in one way for a class I div 1 equipment, while NFPA 497 says that certain Class I Div 1 zones may exist within a piece of equipment, and the hazardous area defined does not match what NFPA 30 is defining. It seems like most of the "general rules of thumb" i encounter in the field are referencing boundaries similar to NFPA 30, without any other analysis being done.
    Last edited by fifty60; 09-12-17 at 02:11 PM.
    Time is of the essence, and I am low on essence. ~ Graham Hill

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