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Cattle Boards
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Cutting a propane tank
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<blockquote data-quote="Caustic Burno" data-source="post: 1622615" data-attributes="member: 694"><p>Once you remove or open the valve oxygen is allowed to enter we now have two elements of a bomb. All you now need is a heat source. Propane will auto ignite without a spark at 920 degrees.Hydrocarbon gases and liquids can and will embed in the metal pours of the storage container. </p><p>You need to steam the tank out after water washing first and test for LEL before cutting. Water washing alone is not a safe way to completely hydrocarbon free a hydrocarbon storage tank especially when dealing with gases.</p><p>http://www.wermac.org/safety/safety_what_is_lel_and_uel.html</p><p></p><p>I have investigated explosions due to skipping steps to completely hydrocarbon free the vessel for maintenance. No way would I cut the tank without steaming and testing with a LEL gas detector. I have had the misfortune to have to don bunker gear to get guys when things went wrong.</p><p>Of all the investigations I have done the last way to go is burned or scalded IMO.</p></blockquote><p></p>
[QUOTE="Caustic Burno, post: 1622615, member: 694"] Once you remove or open the valve oxygen is allowed to enter we now have two elements of a bomb. All you now need is a heat source. Propane will auto ignite without a spark at 920 degrees.Hydrocarbon gases and liquids can and will embed in the metal pours of the storage container. You need to steam the tank out after water washing first and test for LEL before cutting. Water washing alone is not a safe way to completely hydrocarbon free a hydrocarbon storage tank especially when dealing with gases. http://www.wermac.org/safety/safety_what_is_lel_and_uel.html I have investigated explosions due to skipping steps to completely hydrocarbon free the vessel for maintenance. No way would I cut the tank without steaming and testing with a LEL gas detector. I have had the misfortune to have to don bunker gear to get guys when things went wrong. Of all the investigations I have done the last way to go is burned or scalded IMO. [/QUOTE]
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Cutting a propane tank
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