Dear All,
Industrial LPG is widely used in industries for gas cutting operations and strictly prohibits the use of Domestic LPG. If we use domestic LPG for industrial purposes, as per the Liquefied Petroleum Gas Control Order - 2001, you may face imprisonment of up to 7 years together with fines. Are there any safety hazards in using domestic LPG in industrial settings beyond what is mentioned in the statute? Are there any other technical reasons preventing us from using Domestic LPG for industrial purposes?
Awaiting your valuable replies.
Regards,
Dipil Kumar V
From India
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730Industrial LPG is widely used in industries for gas cutting operations and strictly prohibits the use of Domestic LPG. If we use domestic LPG for industrial purposes, as per the Liquefied Petroleum Gas Control Order - 2001, you may face imprisonment of up to 7 years together with fines. Are there any safety hazards in using domestic LPG in industrial settings beyond what is mentioned in the statute? Are there any other technical reasons preventing us from using Domestic LPG for industrial purposes?
Awaiting your valuable replies.
Regards,
Dipil Kumar V
From India
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Dear all,
LPG is a mixture of commercial butane and commercial propane, containing both saturated and unsaturated hydrocarbons. LPG is inherently dangerous due to fire, explosion, and other hazards. This necessitates special attention to how it is bottled, transported, and used, as these hazards can impact both plants and the public. Consequently, there has been a significant emphasis on safety regulations in handling systems design.
At atmospheric pressure and temperature, LPG is a gas that is 1.5 to 2.0 times heavier than air and can be readily liquefied under moderate pressures. The density of the liquid is approximately half that of water, ranging from 0.525 to 0.580 @ 15 deg. C. The pressure inside an LPG storage vessel or cylinder will be equal to the vapor pressure corresponding to the temperature of the LPG in the storage vessel. The restriction on vapor pressure is stipulated by IS-4576, which regulates the lighter ends of hydrocarbons and governs the design parameters for storage vessels.
Vapor pressure depends on temperature and the ratio of the mixture of hydrocarbons. At full liquid condition, any further expansion of the liquid will cause the cylinder pressure to rise by approximately 14 to 15 kg/sq. cm for each degree centigrade. This explains the hazardous situation that could arise from overfilling cylinders.
It is advisable not to use LPG for gas cutting in industrial fabrications and other jobs, as LPG is a mixture of butane and propane only, whether used domestically or industrially.
From India, Mumbai
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LPG is a mixture of commercial butane and commercial propane, containing both saturated and unsaturated hydrocarbons. LPG is inherently dangerous due to fire, explosion, and other hazards. This necessitates special attention to how it is bottled, transported, and used, as these hazards can impact both plants and the public. Consequently, there has been a significant emphasis on safety regulations in handling systems design.
At atmospheric pressure and temperature, LPG is a gas that is 1.5 to 2.0 times heavier than air and can be readily liquefied under moderate pressures. The density of the liquid is approximately half that of water, ranging from 0.525 to 0.580 @ 15 deg. C. The pressure inside an LPG storage vessel or cylinder will be equal to the vapor pressure corresponding to the temperature of the LPG in the storage vessel. The restriction on vapor pressure is stipulated by IS-4576, which regulates the lighter ends of hydrocarbons and governs the design parameters for storage vessels.
Vapor pressure depends on temperature and the ratio of the mixture of hydrocarbons. At full liquid condition, any further expansion of the liquid will cause the cylinder pressure to rise by approximately 14 to 15 kg/sq. cm for each degree centigrade. This explains the hazardous situation that could arise from overfilling cylinders.
It is advisable not to use LPG for gas cutting in industrial fabrications and other jobs, as LPG is a mixture of butane and propane only, whether used domestically or industrially.
From India, Mumbai
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@ Mallik,
Thanks very much for your technical explanations. It really makes me think. Now, I have to find out more facts about the same. I hope for your participation in the forum discussions in the future too.
Regards,
Dipil Kumar V
From India
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Thanks very much for your technical explanations. It really makes me think. Now, I have to find out more facts about the same. I hope for your participation in the forum discussions in the future too.
Regards,
Dipil Kumar V
From India
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Dear Dipil, There is of course a major difference. That difference is in the pricing and other wise nothing. Regards, Kesava Pillai
From India, Kollam
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From India, Kollam
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Dear All,
Which fuel gas (DA or LPG) is safer to use for gas cutting operations and why? What factors should be considered when selecting a fuel gas?
Please post your comments on the queries.
Regards,
Dipil Kumar V
From India
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Which fuel gas (DA or LPG) is safer to use for gas cutting operations and why? What factors should be considered when selecting a fuel gas?
Please post your comments on the queries.
Regards,
Dipil Kumar V
From India
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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 please share the reasons for your queries?
Regards,
TS
From India, Hyderabad
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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 please share the reasons for your queries?
Regards,
TS
From India, Hyderabad
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Hi TS,
This question was asked to me by one of my colleagues. I failed to give sufficient technical explanations to that query. That's why I bring the topic for a debate to the forum.
No other specific reason.
Regards, Dipil Kumar V
From India
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This question was asked to me by one of my colleagues. I failed to give sufficient technical explanations to that query. That's why I bring the topic for a debate to the forum.
No other specific reason.
Regards, Dipil Kumar V
From India
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Hi TS,
The query I raised was asked of me by one of my colleagues. I feel like I did not satisfy him with technical explanations. Therefore, I am bringing up the same topics to the forum for debate.
There are no other specific reasons, just for the purpose of knowledge enhancement.
Regards,
Dipil Kumar V
From India
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The query I raised was asked of me by one of my colleagues. I feel like I did not satisfy him with technical explanations. Therefore, I am bringing up the same topics to the forum for debate.
There are no other specific reasons, just for the purpose of knowledge enhancement.
Regards,
Dipil Kumar V
From India
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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
From India, Kollam
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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
From India, Kollam
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