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Have you worn PPE above 40 cal/cm^2?
https://brainfiller.com/arcflashforum/viewtopic.php?f=33&t=4317
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Author:  Jim Phillips (brainfiller) [ Sun Feb 12, 2017 6:01 pm ]
Post subject:  Have you worn PPE above 40 cal/cm^2?

PPE is available with Arc Ratings that exceed 100 cal/cm^2. This weeks question,

Have you worn PPE with an arc rating above 40 cal/cm^2?

Yes - Please tell us the rating
No - I use 40 cal/cm^2 or less
PPE not required for my job

Author:  PaulEngr [ Mon Feb 13, 2017 8:00 am ]
Post subject:  Re: Have you worn PPE above 40 cal/cm^2?

Does it count if I've got cotton underwear, followed by FR shirt and pants, followed by a 40 cal suit over the top of that? Our standard workwear is the typical ATPV 10 range and we haven't taken credit for or tested the combination of the 3 so technically I'm way higher but never treated it that way.

Author:  bbaumer [ Mon Feb 13, 2017 8:09 am ]
Post subject:  Re: Have you worn PPE above 40 cal/cm^2?

PaulEngr wrote:
Does it count if I've got cotton underwear, followed by FR shirt and pants, followed by a 40 cal suit over the top of that? Our standard workwear is the typical ATPV 10 range and we haven't taken credit for or tested the combination of the 3 so technically I'm way higher but never treated it that way.


Good points. I expect that is what most guys are wearing. Probably not wearing double balaclava's and face shields though.

Author:  Voltrael [ Mon Feb 20, 2017 7:56 am ]
Post subject:  Re: Have you worn PPE above 40 cal/cm^2?

I have not been in a situation where I personally needed to where clothing that exceeded 40 cal/cm2. At a prior location, the suit was rated for 46 cal and the actual equipment rating was around 42 cal, and I encouraged them to where that when necessary.

Author:  vpower [ Wed Mar 01, 2017 6:59 am ]
Post subject:  Re: Have you worn PPE above 40 cal/cm^2?

We have 65 and 100 calorie suits available at the station. I have been required to wear both. Current Engineering provided arc flash calculations list one breaker at 74, one at 52 and several between 42 and 46.5. Also our procedure directs a default to 100 calorie suits if addressing an energized situation that has not been previously evaluated and no Engineer is available to perform calculations.

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