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Thread: Arc Flash

  1. #1
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    Arc Flash

    If your performing a PM (voltage/current readings) task on a motor starter and /or an MCC, are you required to place barriers at the flash zone?

    When do you need to secure the area?

    Jim

  2. #2
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    Quote Originally Posted by jmd445 View Post
    When do you need to secure the area?
    Whenever a hazard exists.
    Just because you can, doesn't mean you should.

  3. #3
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    Quote Originally Posted by jmd445 View Post
    If your performing a PM (voltage/current readings) task on a motor starter and /or an MCC, are you required to place barriers at the flash zone?

    When do you need to secure the area?

    Jim
    Yes barricades are required and shall be no closer than the LAB. If barricades are not possible or would introduce additional hazards an attendant may be used. 130.7(E)

  4. #4
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    Huh. The thread title had me thinking that Noah had a drinking problem...

  5. #5
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    Quote Originally Posted by Jraef View Post
    Huh. The thread title had me thinking that Noah had a drinking problem...
    Fixed

  6. #6
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    Quote Originally Posted by Jraef View Post
    Huh. The thread title had me thinking that Noah had a drinking problem...
    "NOAH"!...."you been dankin' " ? :grin:

  7. #7
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    Arc Flash Boundary and Barricades

    The standard allows different methods for working inside the arc flash boundary. Whatever energized work is performed or potentially performed, one of these methods must be used at the Arc Flash Boundary.

    1. Guard (This usually entails setting another person to watch the boundary while the testing, or other work is occurring). Some circumstances might mean you can guard yourself. We DO NOT recommend this in training. You should be working, not guarding.

    2. Barricade (The barricade should be at the Limited Approach Boundary or the Arc Flash Boundary, whichever is greater). The barricade is required by the standard to meet ANSI Z535.

    3. Barrier (A Barrier must create a safe work zone by preventing shock and arc flash outside this area. This one is very difficult to do unless you are inside a building/room which has restricted access.

    Most companies choose barricades like a red tape which says, "Danger. High Voltage, Keep Out"

    Hope this helps,

    Hugh Hoagland
    Last edited by George Stolz; 05-18-10 at 11:19 PM. Reason: Deleted Contact Info

  8. #8
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    Quote Originally Posted by Hugh_Hoagland_e-Hazard View Post
    The standard allows different methods for working inside the arc flash boundary. Whatever energized work is performed or potentially performed, one of these methods must be used at the Arc Flash Boundary.

    1. Guard (This usually entails setting another person to watch the boundary while the testing, or other work is occurring). Some circumstances might mean you can guard yourself. We DO NOT recommend this in training. You should be working, not guarding.

    2. Barricade (The barricade should be at the Limited Approach Boundary or the Arc Flash Boundary, whichever is greater). The barricade is required by the standard to meet ANSI Z535.

    3. Barrier (A Barrier must create a safe work zone by preventing shock and arc flash outside this area. This one is very difficult to do unless you are inside a building/room which has restricted access.

    Most companies choose barricades like a red tape which says, "Danger. High Voltage, Keep Out"

    Hope this helps,

    Hugh Hoagland
    Hey Hugh, welcome to this forum, I needed some backup

  9. #9
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    Thanks to all for your replys, IWIRE, thanks for fixing the title, I tried to edit it but couldn't.

    Jim

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