Propane- what would blow me up? - Page 3 - Home Brew Forums
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Old 02-12-2013, 07:20 PM   #21
ACbrewer
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I'd be surprised if a tank sold in the last 20years didn't have all the safty features that prevent it from exploding, etc. Heck they are supposed to have a shutoff design that will close the valve if they detect the gas is being used to fast - and on it goes. there was a good Mythbusters episided where they tried to get a tank to explode in a fire. They had to pretty much disassemble the valve on it.

With that said, if you can smell the propane, then your tank is leaking and it should discarded (if it is a blue rhino, I think they are swaped then checked and fixed/discarded)...



 
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Old 02-12-2013, 07:26 PM   #22
BobbiLynn
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Maybe I don't need tools to change mine either, just no idea what I'm doing. When it was hissing from the top of the tank, I could smell propane coming from it. Still waiting for friend to get here. *sigh*



 
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Old 02-12-2013, 07:28 PM   #23
ACbrewer
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Well if you can smell it, then it is there, and I'd stop cooking near it (ignition concern). I'd tighten the valve down and swap. I know it is fustrating, but it is the right move. Hope your friend with tools gets there soon, and takes notes so you can swap next time.

 
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Old 02-12-2013, 09:10 PM   #24
RM-MN
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All of the small tanks have a pressure relief valve built in so the tank will not explode or BLEVE. When it gets enough pressure, well below that which would cause a rupture, the valve opens and releases propane. This release causes the tank to cool and the pressure goes down. The valve closes again and is there waiting in case the pressure goes too high. I've seen a 100 lb tank sitting next to a burning building. When the valve opens and there is flame available to ignite the gas released it makes a pretty blue flame about 30 feet long from the side of the tank. Don't be standing near it.

Propane used outdoors (as it always should be) is not particularly dangerous. Natural air movement will keep the propane from forming a large pool and will quickly dissipate it. If the leak did catch fire it would only burn, not explode. All you need to do is put on some leather gloves and reach in to close the tank valve. No problem.

 
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Old 02-12-2013, 09:12 PM   #25
JeepDiver
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Check the oring on the end of the hose. I have an old fish cooker that I used for 10 years with no problems. Moved here to Denver and I have to replace the oring ever 3 months now. First time I found the issue I smelled gas while starting my boil. The flame was between me and the tank lucked out on that one. I done think New cookers are set up the same but old ones that require tools to change will have an oring on the end of the hose

 
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Old 02-12-2013, 09:21 PM   #26
BobbiLynn
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Friend showed up a while back, switched tanks, just adjustable wrench like I thought. He said the o ring? that attaches the tubing was leaking slightly but not to worry about it. Back in business... need to finish this batch so I can start the other one. Happy brew day dance!

 
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Old 02-12-2013, 09:22 PM   #27
BobbiLynn
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Quote:
Originally Posted by JeepDiver View Post
Check the oring on the end of the hose. I have an old fish cooker that I used for 10 years with no problems. Moved here to Denver and I have to replace the oring ever 3 months now. First time I found the issue I smelled gas while starting my boil. The flame was between me and the tank lucked out on that one. I done think New cookers are set up the same but old ones that require tools to change will have an oring on the end of the hose
I'll figure out how to change that later.... busy now...

 
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Old 02-12-2013, 09:29 PM   #28
OrdinaryAvgGuy
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I like to check for leaks by wavering a match near the line fittings.

I kid. I kid DNTTAH
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Old 02-12-2013, 10:41 PM   #29
Huff360
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Quote:
Originally Posted by Evan_L View Post
The flame kept getting sucked back into the venturi and then it would start burning at the connection between the gas line and venturi. ... can the flame travel back up to the tank when this happens? Is there something I can do to correct this when it happens or do I need to shut off the gas and relight like I was doing?

This is called "burning in the throat" and it is not exceptionally dangerous. It isn't good for the burner but it is not going to cause anything to explode.

The flame can not burn any further back than the orifice because there is no oxygen in the hose or the tank.

 
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Old 02-13-2013, 03:52 AM   #30
Evan_L
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Cool, thanks.



 
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