It is currently Fri Jan 21, 2022 2:24 pm



Post new topic Reply to topic

For an incident energy greater than 40 cal/cm2, which tasks would you consider acceptable?
Opening a hinged door
Removing bolted covers - front of equipment
Removing bolted covers - back of equipment
Hooking up test equipment
None of these are acceptable
You may select up to 5 options

View results
Author Message
 Post subject: More specific tasks where the incident energy is greater than 40 cal/cm2
PostPosted: Sun Dec 02, 2012 8:58 pm 
Plasma Level
User avatar

Joined: Mon Sep 17, 2007 5:00 pm
Posts: 1635
Location: Scottsdale, Arizona
I had a few emails and comments regarding last week’s question saying I need to expand the list of tasks for the greater than 40 cal/cm2 question. This week’s question is the same as last week but with different tasks. Also this is an opinion question so whether you perform live work or not, jump right in with your thoughts.

So here we go - Expanding on last week’s question:

If the incident energy is greater than 40 cal/cm2, which of the following (additional) tasks would you consider reasonable to perform? (Select all that apply)
  • Opening a hinged door
  • Removing bolted covers - front of equipment
  • Removing bolted covers - back of equipment
  • Hooking up test equipment
  • None of these are acceptable

_________________
Jim Phillips, P.E.
Brainfiller.com


Report this post
Top
 Profile Send private message  
Reply with quote  
 Post subject:
PostPosted: Sat Dec 08, 2012 6:51 am 
Plasma Level
User avatar

Joined: Tue Oct 26, 2010 9:08 am
Posts: 2174
Location: North Carolina
Opening covers is tricky because it depends on the equipment design. If there is a significant risk of dropping a cover into buskers for instance then this is different than when there is a hinge (except manhole type covers). Also different if busbars that are unlikely to move or laying up against a cover.

There is also a big difference between say voltage probes and current clamps if wires must be disturbed to attach them or if exposed probe tips exceed phase to phase spacing.


Report this post
Top
 Profile Send private message  
Reply with quote  
 Post subject:
PostPosted: Sun Dec 09, 2012 10:44 am 

Joined: Fri Aug 26, 2011 7:38 am
Posts: 32
Location: Baltimore, MD
Under almost all circumstances I would say none of those tasks are permissible. However, if the consequences on NOT performing the work are an even greater risk to life than performing the work, then the work would be not only permissible, but mandatory. Years ago (I can't find a reference for it on the web) a local state police trooper pulled a citizen out of a burning car seconds before the gas tank caught fire and exploded. The state occupational safety office was set to fine the trooper for violating workplace safety policy but the governor made them stop.


Report this post
Top
 Profile Send private message  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 3 posts ] 

All times are UTC - 7 hours


You can post new topics in this forum
You can reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
© 2022 Arcflash Forum / Brainfiller, Inc. | P.O. Box 12024 | Scottsdale, AZ 85267 USA | 800-874-8883