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#1
04-29-2011, 09:31 AM
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OXY -- ACET SAFETY WARNING
I know lots of you guys have oxy acet rigs....
I have had one for forty years... but I did not know that flash arrestors are supposed to be at BOTH ends of an acet line... http://www.msha.gov/alerts/hazardsofacetylene.htm I have had brand names ' IBEDA or WITT ' ( both German ) suggested as trustworthy.... If anyone finds 'the place' to buy either of these at the best price please post here in this thread...
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1980 240d , chain elongation, cam marks reference: http://www.peachparts.com/shopforum/showthread.php?threadid=10414 http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html evap fin cleaning: http://www.peachparts.com/shopforum/showthread.php?t=156207&highlight=evaporator A/C thread http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html Last edited by leathermang; 04-29-2011 at 10:33 AM. 
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#2
04-29-2011, 09:44 AM
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Quote:
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!!  1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#3
04-29-2011, 09:53 AM
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Yes that regulation has been in effect for some time. the best place is your local welding supply house. they should be $40 to $60 each no matter where they are sourced.
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Keith Schuster 2006 E350 98K miles 2013 Ford Explorer 15K miles
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#4
04-29-2011, 09:54 AM
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Hmm.
I wonder how many portable rigs are on the highway in HVAC trucks without protection...
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#5
04-29-2011, 10:28 AM
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What I do not understand is how Acet inside a bottle...with no oxy in there can explode...
I have seen guys welding in holes with natural gas leaking... they said ' no problem ' as long as oxygen was kept away... which fits the usual description of what is needed for combustion... fuel, oxygen , heat... http://www.msha.gov/alerts/hazardsofacetylene.htm
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1980 240d , chain elongation, cam marks reference: http://www.peachparts.com/shopforum/showthread.php?threadid=10414 http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html evap fin cleaning: http://www.peachparts.com/shopforum/showthread.php?t=156207&highlight=evaporator A/C thread http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html
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#6
04-29-2011, 10:46 AM
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ACETYLENE is one of those all inclusive fuels that will autocombust.
pressurize over 20psi, and it detonates. it's formed from water separating the gas out of carbide I think... that's why acetylene tanks are so heavy. they need a catalyst (acetone) in suspension to pressurize the fuel in any volume. inside the tanks is concrete with walnut shells/other porous aggregate and that is soaked with acetone, then acetylene is pressurized to below 500psi in the tank. ever notice the RED line on the regulator gauge? it's there to keep the hoses from autoigniting...
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#7
04-29-2011, 11:33 AM
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I did know that it was unstable if let out of the tank at too high a rate...
I once saw a caption under a picture in a custom painting book which was showing custom cloud like wisps made by burning acet alone.. but the caption said ' pure oxygen being burned' ...FAIL ....since it will not burn by itself...
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1980 240d , chain elongation, cam marks reference: http://www.peachparts.com/shopforum/showthread.php?threadid=10414 http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html evap fin cleaning: http://www.peachparts.com/shopforum/showthread.php?t=156207&highlight=evaporator A/C thread http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html
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#8
04-29-2011, 12:40 PM
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leathermang, are you our resident Saftey Officer now!
  
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Andrew '04 Jetta TDI Wagon  '82 300TD ~ Winnie ~ Sold '77 300D ~ Sold
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#9
04-29-2011, 01:30 PM
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Quote:
How effective I will be I don't know... I did not seem to be able to convince people that using a welder on rusted sheetmetal / petro chemicals (sound deadener, etc ) sandwiches like our floorboards are was a bad idea...
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1980 240d , chain elongation, cam marks reference: http://www.peachparts.com/shopforum/showthread.php?threadid=10414 http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html evap fin cleaning: http://www.peachparts.com/shopforum/showthread.php?t=156207&highlight=evaporator A/C thread http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html
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#10
04-29-2011, 01:35 PM
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Quote:
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Andrew '04 Jetta TDI Wagon '82 300TD ~ Winnie ~ Sold '77 300D ~ Sold
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#11
04-29-2011, 01:58 PM
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Quote:
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1981 Mercedes 300TD, 1994 Honda Civic Del Sol http://mefi.us/images/fuelly/smallsig-us/67195.pnghttp://mefi.us/images/fuelly/smallsig-us/103885.png
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#12
04-29-2011, 02:02 PM
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Quote:
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1981 Mercedes 300TD, 1994 Honda Civic Del Sol http://mefi.us/images/fuelly/smallsig-us/67195.pnghttp://mefi.us/images/fuelly/smallsig-us/103885.png
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#13
04-29-2011, 03:03 PM
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They were city of Austin workers in a hole next to the street... So I can not be sure of what they were doing... but I really did not want to be close by...LOL
and no explosion happened... so I guess they knew what they were doing OR got lucky...
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1980 240d , chain elongation, cam marks reference: http://www.peachparts.com/shopforum/showthread.php?threadid=10414 http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html evap fin cleaning: http://www.peachparts.com/shopforum/showthread.php?t=156207&highlight=evaporator A/C thread http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html
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#14
04-29-2011, 09:56 PM
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Quote:
welding is no problem.
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#15
04-29-2011, 09:58 PM
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Quote:
__________________
1980 240d , chain elongation, cam marks reference: http://www.peachparts.com/shopforum/showthread.php?threadid=10414 http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html evap fin cleaning: http://www.peachparts.com/shopforum/showthread.php?t=156207&highlight=evaporator A/C thread http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html
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