Boss2966
Industrial Relations
Dipil
Safety Consultant
Kesava Pillai
Occupational Safety & Health
+1 Other

Thread Started by #narenderenjoy

Dear Sir.
I have one small clarification that,while cutting or welding time all are using LPG along with O2 cylinder,what purpose O2 cylinder attaching while cutting time.
Please give me clarification.
Regards
Naren
8th February 2014 From India, Bidar
Dear Naren,
There is some thing called fire chemistry.
There is something called LEL and UEL too. Please learn about it.
We can change the quality of flame/fire by changing the gas air/oxygen ratio. For better flame quality especially increase in temperature use of oxygen with LPG is resorted to.This is nothing but changing the above ratio.
Regards,
Kesava Pillai
4th March 2014 From India, Kollam
Dear Pillai,
Thanks for your valuable input it is very useful for us.
Dear Naren,
Please find attachment and read carefully for your clarification,
I think it will sufficient for for your clarification .
4th March 2014 From India, JaipurJaipur

Attached Files
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File Type: ppt FIRE-C.R.Saini.ppt (130.0 KB, 433 views)

Dear Friends We should not use the LPG Cylinder for Cutting & Welding jobs. We Must use DA & O2 Cylinders with good quality Flash Back Arrester.
5th March 2014 From India, Kumbakonam
Dear Bhasker
Thanks for the participation.
Can you please let us know what is the source or logic of this information? Any statue in India prohibiting the use of Industrial LPG for Gas Cutting Operation in Industries?
Looking forward to hear from you.

5th March 2014 From India
Dear Dipil
There is no such statute available in India not to use the Industrial LPG.
The reasons for restricting the LPG in industrial use are as follows :
DA Cylinders are more safer than Industrial LPG.
We cannot fit the Flash back arrester in the LPG Cylinder nozzle. The flash back arresters are fitted in cylinder as well as near the lighting nozzle.
LPG is 2.5 times heavier than air. In case of any leakage, DA can easily spread and mix with the air but the LPG will not spread and mix with air as like DA. Hence there are more chances of Fire Hazard.
In houses we used to close the knob of the regulator which is fitted in the cylinder and switch of the Gas Stove. But we will not always follow the same in Industries, which will increase the risk of fire hazard.
5th March 2014 From India, Kumbakonam
Dear Bhaskar

Thanks,

I am sure you might miss the below thread containing our earlier discussion on LPG vs DA and we came to a common conclusion that LPG is much safer than DA due to many factors. Request to please refer below thread.

https://www.citehr.com/269907-domest...sures-pg2.html

Now to reply to you specifically on the issues you mentioned:

DA Cylinders are more safer than Industrial LPG - No. Please go through the convincing reply from even Mr. Keshav Pillai in the above mentioned thread.

We cannot fit the Flash back arrester in the LPG Cylinder nozzle. The flash back arresters are fitted in cylinder as well as near the lighting nozzle. - This is the problem with wrong selection of regulator. We normally use regulator using by "Halwai (sweet makers)" and this is the issue. Go for a standard ISI marked regulator and this issue will get resolved.

LPG is 2.5 times heavier than air. In case of any leakage, DA can easily spread and mix with the air but the LPG will not spread and mix with air as like DA. Hence there are more chances of Fire Hazard. - Refer the attachment DA and LPG in the above mentioned thread.

In houses we used to close the knob of the regulator which is fitted in the cylinder and switch of the Gas Stove. But we will not always follow the same in Industries, which will increase the risk of fire hazard. - Nowadays much more safe regulators are available in market for even domestic LPG cylinders which will even turn off the regulator automatically if found a small leak even in the gas pipe.
5th March 2014 From India
Thank you Dipil for linking the earlier discussion on the subject. It is really informative. I am unable to understand how I missed that thread. Since I joined in this forum, whether I participate in any discussion or not, I used to go through completely all the threads subject line once and I open the the threads of my interest and read completely and if I feel it needs my reply then I respond.
In the same link Mr. Sudhir has mentioned that the usage of LPG cylinder is restricted in Maharashtra Government and the Industries in Maharashtra can use only DA.
In the same link Mr. Vasudev has mentioned that the LPG cylinder compatible ISI marked Non Return Valve is not available in Market.
Once the LPG is more safe, then what is the purpose of making one more product by Bharat Petroleum in the name of Bharat Cutting Gas.
5th March 2014 From India, Kumbakonam
Dear Bhaskar
Have a look into the attachments. One from BPCL & One from Indane. Both are sufficient enough to clear your further quires.
Answer of Mr. Sudhir not supported with which legislation / notification of Maharashtra preventing the use of Industrial LPG inside industries not clear. Hence I am not commenting upon. If he can lead us to the source of information, we may relay or else this is just an open statement. See where all can we use the Industrial LPG from the attachment.
Now what Mr. Vasudev commented is totally wrong. I personally have experience of implementing such standard regulators in industries.
Bharat Cutting Gas is the name BPCL given to its Industrial LPG only.

5th March 2014 From India

Attached Files
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File Type: ppt DA vs LPG BMCG-PRESENTATION-CII08012010m.ppt (655.5 KB, 201 views)
File Type: docx Commercial Applications of LPG.docx (252.1 KB, 193 views)

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