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Do you use the Hazard / Risk Category table method for PPE selection?
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 Post subject: Do you still use HRC Tables for selecting PPE?
PostPosted: Sun May 06, 2012 2:25 pm 
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Joined: Mon Sep 17, 2007 5:00 pm
Posts: 1637
Location: Scottsdale, Arizona
The Hazard / Risk Category method was introduced with the 2000 Edition of NFPA 70E. Many years have passed since then and it seems the trend for PPE selection has migrated towards incident energy calculations.

This week's question:

Do you still use the Hazard / Risk Category table method for PPE selection?
  • Yes
  • No
  • Sometimes
Stories and comments are always welcome!

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Jim Phillips, P.E.
Brainfiller.com


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PostPosted: Sun May 06, 2012 4:20 pm 
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Joined: Tue Jul 03, 2007 5:00 pm
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Location: Michigan
I would be surprised if anyone uses the tables anymore. For labeling if you use the HRC tables, you have to list the highest one which could be a real problem to implement.


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PostPosted: Mon May 07, 2012 5:28 am 
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Location: Charlotte, NC
As a contractor you often have to use the tables if the facility has not conducted an arc flash study. The hard part is training your field crew to understand how to figure out if the equipment falls within the limit sof the tables.


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PostPosted: Mon May 07, 2012 6:49 am 

Joined: Sat Jul 26, 2008 5:00 pm
Posts: 29
I know the tables have risk involved with the HRC depending on the task but it is still always difficult to explain to someone why calculations give you only 1 answer and the tables may give you 3 different answers.


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PostPosted: Mon May 07, 2012 7:16 am 

Joined: Tue Jul 27, 2010 6:56 am
Posts: 5
Location: New York, NY
brainfiller wrote:
The Hazard / Risk Category method was introduced with the 2000 Edition of NFPA 70E. Many years have passed since then and it seems the trend for PPE selection has migrated towards incident energy calculations.

This week's question:

Do you still use the Hazard / Risk Category table method for PPE selection?
  • Yes
  • No
  • Sometimes
Stories and comments are always welcome!


We use IEEE to calculate the incident energy.


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PostPosted: Mon May 07, 2012 9:13 am 

Joined: Wed Nov 24, 2010 8:12 am
Posts: 1
Location: South Carolina
We don't do math, the Safety department just makes blanket policies. PPE to change 3 VDC battery.


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PostPosted: Wed May 09, 2012 6:32 am 
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Joined: Wed Jun 04, 2008 9:17 am
Posts: 428
Location: Spartanburg, South Carolina
We use the tables when gathering data for arc flash studies. This is somewhat of a problem, however, because before we gather the data and model the system, we don't usually know the fault current levels and interrupting times.


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PostPosted: Wed May 09, 2012 12:51 pm 

Joined: Sun Oct 05, 2008 5:00 pm
Posts: 17
jghrist wrote:
We use the tables when gathering data for arc flash studies. This is somewhat of a problem, however, because before we gather the data and model the system, we don't usually know the fault current levels and interrupting times.

Same here. There is only so much you can do when you don't have enough info. Something is better than nothing.


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PostPosted: Thu May 10, 2012 1:36 pm 
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Joined: Sun Jul 13, 2008 5:00 pm
Posts: 24
I've had contractors use the tables but when I mention the limitations they give me the deer in the headlights look.


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PostPosted: Fri May 11, 2012 6:51 am 
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Joined: Wed Nov 04, 2009 6:59 am
Posts: 1
Location: Georgia
Jim, GREAT QUESTION!
I am on the "other" end of the spectrum. Workrite provides the clothing specified, but many contractors {who are allowed} to use the tables do so incorrectly due to missing information. My experience has been that companies who specify the appropriate level of clothing are the same companies who have performed the appropriate level of arc flash hazard analysis. These same reputable companies will then enforce their own standards or allow acceptable higher levels of protection from their contractors. In the eyes of OSHA, both the a)host employer and b) contractor are responsible for doing the work safely. Both will be fined in the event of an accident. This is well documented. GOOGLE OSHA's "multi-employer citation policy" for reference to their position.


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