Domestic Vs Industrial LPG - Safety Measures
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Domestic Vs Industrial LPG - Safety Measures

dipil Started The Discussion:

Dear All

Industrail LPG is widely used in the industries for gas cutting operation and strictly prohibiting the use of Domestic LPG.

If we use the domestic LPG for industrial purpose, as per Liquefied Petroleum Gas Control Order - 2001, you may get an imprisonement upto 7 years together with fines.

Is there any SAFETY Hazard in using the domestic LPG in Industrail Use than the above mentioned statue?

Any other technical reason which prevent us from using the Domestic LPG for Industrial use?

Awaiting for your valuable reply's.

Regards,
Dipil Kumar V

Mallik - Member Since: Dec 2007
Dear all,
LPG is a mixture of commercial butane and commercial propane having both saturated and unsaturated hydrocarbons. LPG is inherently dangerous on account of fire, explosion and other hazards. This calls for special attention on the manner in which it is bottled, transported or used. These hazards can have an impact on both the plants and the public. As a consequence of this special emphasis has been placed on the safety regulations in its handling system design, etc.LPG at atmospheric pressure and temperature is a gas which is 1.5 to 2.0 times heavier than air. It is readily liquefied under moderate pressures. The density of the liquid is approximately half that of water and ranges from 0.525 to 0.580 @ 15 deg. C The pressure inside a LPG storage vessel/ cylinder will be equal to the vapour pressure corresponding to the temperature of LPG in the storage vessel. The restriction on vapour pressure is stipulated by IS-4576 which in turn regulates the lighter ends of hydrocarbons and this governs the design parameters for storage vessels.
The vapour pressure is dependent on temperature as well as on the ratio of mixture of hydrocarbons. At liquid full condition any further expansion of the liquid, the cylinder pressure will rise by approx. 14 to 15 kg./sq. cm. for each degree centigrade. This clearly explains the hazardous situation that could arise due to overfilling of cylinders.
We should not use LPG for gas cutting in industrial fabrications and other jobs. LPG is a mixtureof Butane and Propane only whether used domestic or Industiral.

dipil - Member Since: Nov 2009
@ Mallik

Thanks very much for your technical explanations...

Its really makes me think...

Now have to find out more facts about the same...

Hope your participations in the forum discussions in future too...

Regards,
Dipil Kumar V

Kesava Pillai - Member Since: Dec 2009
Dear Dipil, There is of course a major difference. That difference is in the pricing and other wise nothing. Regards, Kesava Pillai

dipil - Member Since: Nov 2009
Dear All

Which fuel gas (DA or LPG) is more SAFE to use for gas cutting operation and Why?

What all factors to be considered while selecting fuel gas?

Post your comments on the queries please

Regards,
Dipil Kumar V

tajsateesh - Member Since: Mar 2009
Hello Dilip Kumar,
You seem to be asking so many details about Domestic & Industrial LPG that there seems to be SOME SPECIFIC reason, rather than just to increase your awareness/knowledge.
Could you pl share the reasons for your queries?

Rgds,
TS

dipil - Member Since: Nov 2009
@ TS

This question was asked to me by one of my colleague... I fail to give sufficient technical explanations to that queries... That’s why bring the topic for a debate to the forum...

No other specific reason...

Regards,
Dipil Kumar V

dipil - Member Since: Nov 2009
@ TS

The queries I raised was asked to me by one of my colleague... I feel like not satisfy him with technical explanations... Hence bring the same topics to the forum for a debate...

No other specific reasons... Just for knowledge up gradation...

Regards,
Dipil Kumar V

Kesava Pillai - Member Since: Dec 2009
Dear Dipil,

LPG

Low cost compared to Acetylene and easier to transport.
Does not burn as hot as acetylene in its inner cone, and so cannot be used for welding. Propane has high flame temperature leading to faster cutting, lower slack formation and lower consumption of fuel. Propane, however, has a very high number of BTUs per cubic feet in its outer cone, and because of this with the right torch (injector style) makes a faster and cleaner cut than acetylene, and is much more useful for heating and bending than acetylene.

Acetylene

Comparatively high cost
Acetylene gas is shipped in special cylinders designed to keep the gas dissolved. Acetylene when burned with oxygen gives a temperature of 3200 C to 3500 C (5800 F to 6300 F), which is the highest temperature of any of the commonly used gaseous fuels.

Above absolute pressure acetylene is unstable and may explode.
With this you can realize that LPG is far safer than Acetylene.

The factors you have to consider in selecting a gas:

a) Thickness of metal being cut.
b) Cost

A well trained employee will deal safely with any of these gases.

Now just try to explain how an acetylene cylinder is constructed and why acetylene should not be laid horizontally?


Regards,
Kesava Pillai

tajsateesh - Member Since: Mar 2009
Hello Dilip, Kesava Pillai has given a really in-depth technical reply. Guess it can’t get more technical than that :-) Rgds, TS



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