5 replies to this topic

[sn_sn]

How To Decide Gas Group For Hazardous Area Classification? i have three tanks methanol ethanol and acetone

[breizh]

Hi,

Consider this resource:

Hazardous Area Classification and Control of Ignition Sources (hse.gov.uk)

 

Take a look also at the SDS of your products.

Breizh 

[seuenergy]

Hi Sn_Sn,

 

It seems that your site collects three tail gas from different tanks. 

Firstly, you need to identify the hazard area of individual tank's gas phase. For example, whether the tank is sealing with continuous N2 sealing gas or collecting with atmosphere by breathing valve, or other type.

Secondly, if one of the three tanks is identified as zone 2. I think that the collecting gas should also be zone 2.

 

This is my simple idea. please correct me if I am wrong. 

[sn_sn]

thanks for replying there is one tanker...pump...and then tanks...piping are flanged and valves are manual. As per standard 2 tanks gas group IIA and and third tank IIB. so should i consider IIB for all three tanks?

[shvet1]

@sn_sn

See annex B IEC 60079-20-1. Note that according to standard for mixtures of gases a user shall provide a certified measurement otherwise use a strictest component. What is a design code? ATEX/EU or UL/USA?

 

Looks like you a lack of basic knowledge in ATEX. That-guy-from-the-internet is not a source to be relied on in such things like explosions.

Edited by shvet1, 02 May 2023 - 12:15 AM.

[breizh]

Hi,

You may find mor information in the doc attached.

Check with the safety engineer at your workplace and/or get a chat with the fire brigade and ask for support.

 

https://infostore.sa..._AS_AS_208935/  

 

Good luck.

Breizh