TQMC has acquired wide Domain Knowledge and Experience. You can FREELY access it here and here

DISCLAIMER: This matter here is a guide only. For authentic and up-to-date information, please contact TQMC.

The DIRECTIVES and STANDARDS listed here may have been subsequently REVISED . You must refer to the CURRENT REVISION and AMENDMENTS if any.

Friday, April 16, 2010


from the Instrumentation department...
Flame proof vs Explosion proof
Engineering and workplace issues. topic
Posted by @mod on 13 December, 2008 - 4:34 am
We have asked Vendor to give an explosion proof Temperature txr suitable for Zone 2, Class I & Temp Class T3. But vendor is offering Flame-proof for this application. Is it acceptable? Can Somebody compare these two certifications?

Posted by Abhijit Goswami, Haldia on 13 December, 2008 - 2:18 pm
Flameproof design is one of the explosion protection technique extensively used for light fittings, JBs, motors in hazardous areas. This is certified by IEC but is predominantly followed in India and is also governed by local IS standards.

However, hazardous area specification you have asked for the transmitter is quite common and you should get it (ex-proof) from most of the reputed manufacturers.


Posted by Bruce Durdle on 13 December, 2008 - 5:14 pm
The difference is in name only - and the detailed standards for each. They both use the same protection principle of preventing any ignition effects from propagating from the enclosure interior to the external atmosphere.

Posted by Deodatta Koli on 23 November, 2009 - 7:32 am
Dear Sir,

Hello from Deodatta Koli. Please let us know what do you mean by Temperature txr. Flameproof is the word normally used by Asian & other commonwealth countries. Explosion proof is an American Word. EExd is used by all EU. There is no difference except term. You can log into for further information.

In brief, we would like to inform you that as India has adopted IEC in the year 2004, now the certification are in line with IEC: 60079.1 as well as IS:2148. Now again we would like to inform you that the CMRI, Dhanbad is abolished by Govt. of India & it has become now Central Institute of Mining & Fuel Resaerch (CIMFR, Dhanabd)

Your use of this site is subject to the terms and conditions set forth under Legal Notices and the Privacy Policy. Please read those terms and conditions carefully. Subject to the rights expressly reserved to others under Legal Notices, the content of this site and the compilation thereof is © 1999-2010 Nerds in Control, LLC. All rights reserved.

Users of this site are benefiting from open source technologies, including PHP, MySQL and Apache. Be happy.

I have yet to see any problem, however complicated, which, when looked
at in the right way, did not become still more complicated.
-- Poul Anderson


No comments:

Post a Comment