Gas Bottle
Gas Bottle
(OP)
I am designing a gas bottle for welding that will be handling propane, oxygen, argon / CO2. I need to design the bottle to ASME VIII, Div 1.
My questions are:
1.) Does the ISO 9809 specification for "Gas Cylinders - Refillable Seamless Gas Cylinders" apply to this design?
2.) My main concern is what materials should be used for this application? Can regular carbon steel be used (SA-106B) and normalized SA-105 for couplings?
Thank you in advance.
My questions are:
1.) Does the ISO 9809 specification for "Gas Cylinders - Refillable Seamless Gas Cylinders" apply to this design?
2.) My main concern is what materials should be used for this application? Can regular carbon steel be used (SA-106B) and normalized SA-105 for couplings?
Thank you in advance.





RE: Gas Bottle
Propane, in particular has very different properties from the others - at room temperature and typical storage pressures, it's a liquid. Putting it into seamless cylinders feels like a bit extravagant.
A.
RE: Gas Bottle
As to the spec - why don't you read it and find out?
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Gas Bottle
As to the spec, it costs a few hundred bucks so uneasy looking for a little ensight before purchasing. Thanks.
RE: Gas Bottle
RE: Gas Bottle
RE: Gas Bottle
You CANNOT mix flammable gas systems with non-flammable. EVER.
the industry and OSHA standards require left-hand and right-hand threads for oxidizers and flammables for one, specifically BECAUSE they do not allow the gasses to even have the possibility of being mixed in the lines.
Acetylene tanks are filled to a low pressure with liquid acetylene into a matrix of fine metallic balls (not really a powder, but I have not felt the mix itself). The other gasses are high pressure, and must be kept pure, clean and dry. (How does the "boss" expect to purge and vent and keep the mixed gasses clean enough to use? )
NO company will provide you gases as a refill into anything but their compressed gas standardized and certified bottles. Most will not even refill (fill from the truck) into gas bottles owned and serviced by a different company due to liability.
The idea is unsafe. Unreliable. Foolish. And uneconomic.
RE: Gas Bottle
Please have 'genius' client email his insurance provider; HELL NO is easier to read than to listen to on the phone.
RE: Gas Bottle
4 individual bottles for each gas. Thanks.
RE: Gas Bottle
I would check your personal insurance policy to see that you are covered for errors and omissions. You are going to need it when you're named as a defendant in the legal proceedings resulting from the property damage and deaths due to the catastrophic explosion.
Best regards - Al
RE: Gas Bottle
These might be interesting for you - see GN 17 for the info you should be asked for. http://www.bcga.co.uk/pages/index.cfm?page_id=20
Also need to check your own jurisdiction as to what is and isn't allowed for gas containers.
Many suppliers rent bottles or work on a tracking system for their own bottles.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Gas Bottle
RE: Gas Bottle
Which are very small vessels.
standard says:
Materials shall fall within one of the next categories:
- internationally recognized cylinder steels
- nationally recognized cylinder steels
- new cylinder steels resulting from technical progress
+ specific conditions.
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