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 Post subject: Query related to PPE
PostPosted: Tue Feb 25, 2014 8:08 pm 
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Hi,
Q1. Is there any necessity to consider PPE, hazard categories, arc flash boundries that already have type test certificate for internal containment?
Q2. As per Table 130.7(C)(10) in NFPA 70E 2012 regarding the PPE requirements, should the worker wear AR PPE (including Hood/shield/AR Coveralls) even the hazard category is CAT-1 or 2?

Request any one to please let me know about the answer for above queries at the earliest.. Thank u


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PostPosted: Wed Feb 26, 2014 7:13 am 
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Q1: Not clear on what you are asking. Could you elaborate?

Q2: There is no Table 130.7(C)(10) in NFPA 70E-2012. Regardless see Table 130.7(C)(16) for PPE required by HRC.

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PostPosted: Wed Feb 26, 2014 3:52 pm 
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When you say "internal containment" and you are referring to arc resistant switchgear, that certification only applies when the doors are closed and bolted shut. The qualified workers that have to open it up and work on it still need the information when the doors are open. If you are referring to AIC then no, false. A bolted fault is vastly different from an arcing fault.

With regards to Q2, that sounds like an older (pre-2012) 70E standard. Where are you getting this from? Even in the older standards, arc rated PPE was required up to H/RC 2, even going back to the 2004 edition. The big change in the 2009 edition is that "layering" such as wearing two sets of coveralls was eliminated from the tables as it had no scientific basis. The big change in 2012 was that "2*" disappeared, and H/RC 2 now requires EITHER a hood or a combination of a balaclava and a face shield. Both require safety glasses and several other items that you did not mention. You need to get an up to date Code book because there were a lot of changes in the new edtion and there will be even bigger changes in the 2015 edition.

If you can't afford to purchase an up to date copy, go to the [url='http://www.nfpa.org/']www.nfpa.org[/url] website. You can read ALL current NFPA standards for free. You just can't copy/paste or print from them and they are a little slow to change pages. Don't feel shy about this. I have frequently looked up some of the lesser known standards that I don't have the time or money to pay for just for one or two paragraphs of material.


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PostPosted: Thu Feb 27, 2014 11:24 pm 
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Thank u very much Mr Paul for your reply.


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