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arc flash face shield requirement per NFPA 70E-2015

Question asked by Amir Toliyat on Aug 17, 2016
Latest reply on Aug 17, 2016 by Steve Benton

I have performed an engineering analysis for a client and found the maximum incident energy to be 2.565 cal/cm^2. According to Table H.3(b) of NFPA 70E this is within the 1.2 to 12 cal/cm^2 exposure level, which requires an arc-rated face shield. However, the client is thinking that an arc-rated face shield would seem like overkill, especially since the minimum ATPV of a face shield is usually 8 to 10 cal/cm^2. Is there any resolution to this contradiction? If the purpose of an engineering analysis is to avoid using more PPE than required, then why are they being told to wear something they do not need? Is there any language that allows them to side-step the face shield? (unless, of course, they do really need it?)

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