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  1. Replies
    5$$
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    CompEx is almost exclusively focused on the...

    CompEx is almost exclusively focused on the installation of equipment in hazardous areas. So it should meet your needs.
  2. No, it is because the leaking is presumed to be...

    No, it is because the leaking is presumed to be small, and the flammable vapors will dilute to below LFL by the time they travel 3' from the leak point.

    3' (1m) is a fairly common rule of thumb...
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    Yes, the logic is (mostly) correct. I assume...

    Yes, the logic is (mostly) correct.

    I assume we're talking about a solid-state capacitive switch, or some other device without moving physical metallic contacts.


    With respect to the ignition...
  4. > Can somebody tell me how they comply with the...

    > Can somebody tell me how they comply with the insulation requirement, or how they got around it?

    Who is "they", and what did they get around?

    I'm not sure what your argument is. I'm...
  5. I think you mean the device >requires

    I think you mean the device >requires< nonincendive field wiring.

    Regardless:

    "Nonincendive Field Wiring": means that the device in question has to be supplied from a power source that has been...
  6. FWIW, I agree that talking to the NFPA committee...

    FWIW, I agree that talking to the NFPA committee members was a good approach. They're the ones who have the best understanding of the standard.

    The AHJ, on the other hand, might not know. A lot...
  7. Probably, but it depends on what you're doing. ...

    Probably, but it depends on what you're doing.



    Again, depends on what you're doing.



    You answered your own question, as the minimum rating for the components would be Div 2.
  8. Replies
    5$$
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    CompEx (https://www.compex.org.uk/)is probably...

    CompEx is probably the closest program to what you want. It covers equipment selection, installation and inspection, but AFAIK it doesn't cover how to classify areas. Several European providers...
  9. From NFPA 36: "Chapter 1 Administration 1.1...

    From NFPA 36:

    "Chapter 1 Administration

    1.1 Scope.

    1.1.1* This standard shall apply to the commercial scale
    extraction processing of animal and vegetable oils and fats by
    the use of Class...
  10. Replies
    3$$
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    Group A = Acetylene Group B = Hydrogen (and...

    Group A = Acetylene
    Group B = Hydrogen (and similar)
    Group C = Ethylene (and similar)
    Group D = Propane (and similar)

    Group D often means the location has methane or propane.
  11. Replies
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    ANSI/ISA 12.12.01 can certainly be used on a...

    ANSI/ISA 12.12.01 can certainly be used on a complete apparatus. Or on components - it's written to accommodate both.

    A lot of equipment certified for use in Division 2 has been evaluated to...
  12. The definition of "simple apparatus" has been...

    The definition of "simple apparatus" has been moved to Art. 100. The 1.5V, 100mA, 25 mW limits can be found there.
  13. Replies
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    Yes, correct. Agencies will use ANSI 12.12.01...

    Yes, correct. Agencies will use ANSI 12.12.01 only for equipment that is intended to be certified as non-incendive. Accordingly, in the USA, all non-incendive equipment has to meet ANSI 12.12.01.
    ...
  14. Yes, certainly. Not all paints will form an...

    Yes, certainly. Not all paints will form an explosive atmosphere, and the other criteria will determine extent of area. Maybe your outlets will be in a Div 2 area, or outside the hazardous area...
  15. On first reading, I would think "marked" is...

    On first reading, I would think "marked" is referring to 501.105(B)(1):

    "Where such an assembly includes any of the equipment
    described in 501.105(B)(1), 501.105(B)(2), and
    501.105(B)(3), the...
  16. I think everyone available should be consulted,...

    I think everyone available should be consulted, including process.

    Most of the newer standards concur - they're now calling risk analysis a multidisciplinary activity, which makes sense:

    "4.4...
  17. As petersonra said, for a Div 2 location, both...

    As petersonra said, for a Div 2 location, both can be used. So both can be treated the same in this situation.

    They are not quite identical. For example, "non-incendive" allows currents up to...
  18. After a brief look, I would say that per NFPA 77...

    After a brief look, I would say that per NFPA 77 Chapter 11, you should bond the drums to the filling station before filling. Also try to fill slowly, and at the bottom. However, I don't see any...
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    6$$
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    Knowing what I know about equipment standards,...

    Knowing what I know about equipment standards, I'd be skeptical that comparison against the NEC would be sufficient.

    To determine suitability on anything more complicated than a junction/relay box...
  20. Replies
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    Static electricity is not mentioned in the NEC,...

    Static electricity is not mentioned in the NEC, except in connection with electrostatic processes (spray booths, printing, etc.). So both non-metallic and plastic-coated metallic conduit should be...
  21. You are correct - without the necessary seal(s),...

    You are correct - without the necessary seal(s), it is no longer explosion-proof, and not suitable. It would be rated for exactly nothing.

    You can always put Div 1 equipment in Div 2 locations -...
  22. It's impossible to argue since you're the only...

    It's impossible to argue since you're the only one who knows what we're talking about. The rest of us are flying blind.

    However, the conclusion should be scientifically and legally defensible. ...
  23. > The building has been designated simply as...

    > The building has been designated simply as “Hazardous Materials Building” but no one is sure what exactly the materials will be housed
    > within – one must assume both lighter than air as well...
  24. It is indeed a pity we can't all (yet) get along....

    It is indeed a pity we can't all (yet) get along. ;)
  25. Hey Bob, At risk of hijacking this thread: ...

    Hey Bob,

    At risk of hijacking this thread:

    As always, you are correct. :) Canada switched to Zones and put Division in Annex J of the CEC some time ago. (Although we only just got Zone dusts...
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