Hazardous Area Classification DWGS

[Redskinsdb21]

Hello All,

I am reviewing NEC Classified area section. Something came to my mind from days at chemical industry but could not find answer.
So, does anyone know how, when developing a HAC drawing, to tell how far the classified area extends beyond the source/point?

Thanks!

 

[xnuke]

This is a duplicate post and has been red-flagged for deletion.

xnuke
"Live and act within the limit of your knowledge and keep expanding it to the limit of your life." Ayn Rand, Atlas Shrugged.
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.

 

[Redskinsdb21]

Where is the duplicate? I searched but could not find.

 

[xnuke]

It was in forum248, but is now gone. Someone, probably a moderator, has edited my post above to remove the link I included telling people to post in the other thread, and has deleted the other thread.

Please do not post the same question in more than one forum. Now that this is the only thread with this question remaining on the site, people should feel free to answer the question here and ignore my post above.

xnuke
"Live and act within the limit of your knowledge and keep expanding it to the limit of your life." Ayn Rand, Atlas Shrugged.
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.

 

[mparenteau]

NFPA 497.

Mike