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API 505-Appendix D Question

Discussion in 'Electrical Engineering' started by Scott Darling, Sep 8, 2004.

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  1. Hello all,

    I have a question regarding area class determination as shown in API 505
    Appendix D.

    Most of it is straight forward but the one factor for determining the
    distance of the classification is a little confusing... can anyone tell me
    what the definition is of Mass Liquid Release Rate?

    I assume it is how much leakage will come out of the seals/flanges of a pump
    or the vents/flanges/valves of a tank or similar item during normal usage.
    There is a little difference of opinion about this in the office so I was
    wondering if there might be an official meaning to this?
    Some folk seem to think it has to do with leakage during a fault or
    emergency situation in which case how do you determine how much of a fault
    is required.

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