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Propane tank inspection [message #233438] Wed, 18 December 2013 19:16 Go to next message
Bullitthead is currently offline  Bullitthead   United States
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Does anyone know the inspection requirements for the GMC propane tanks? I guess the DOT requirements will surpass any state regs. Since it is not a portable tank, it doesn't get a regular inspection with a refill like the Blue Rhino setup for barbeque grills. Mine still holds fuel and is not rusted on the outside, but the propane dealer may need to know and I also don't want to get condemned at a tunnel or the side of the road by some random inspection.

Terry Kelpien ASE Master Technician 73 Glacier 260 Smithfield, Va.
Re: Propane tank inspection [message #233442 is a reply to message #233438] Wed, 18 December 2013 19:44 Go to previous messageGo to next message
Steve is currently offline  Steve   United States
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If I understand correctly, there is DOT and ASME? DOT tanks do not require installation of the new valve handle and the full tank safety shut off. DOT tanks may need to be re-certified at some interval.

The tank on my 1968 truck camper confused a lot of propane dealers. They thought it was a "portable" vs. a more permanent mount. I found someone who actually knew what they were doing, and they identified it as a DOT tank and had it certified for 10 more years. Small certification sticker now attached.


1978 GMC Royal
Eastern Pennslyvania
1968 Chevrolet C20 396 Camper Special
1969 Chevrolet C20 Camper Special
1985 Buick Electra Park Avenue
1992 Camaro 25th Anniversary Heretage Edition Black
Re: [GMCnet] Propane tank inspection [message #233444 is a reply to message #233438] Wed, 18 December 2013 19:54 Go to previous messageGo to next message
powerjon is currently offline  powerjon   United States
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Terry,
The LP tanks on the GMC motorhome are ASME tanks and do not require and inspection such as the DOT tanks do. Most are made by Manchester Tanks.

http://www.mantank.com/products/rvproducts.htm

The following information is from a online site:

"There are 2 types of propane storage vessels, an ASME TANK and the DOT CYLINDER. NFPA pamphlet 58 states that the DOT CYLINDER needs to be recertified after 12 years from the manufacturing date. Depending on the certifying method used, they are recertified every 5,7,12 years thereafter. The recertification involves an inspection and testing of the cylinder to confirm that the cylinder is still safe and legal to remain in service.

ASME TANKS that are found on an RV do not get recertified. They should have the relief valve replaced every 10 years and should follow the same standards established by the Department of Transportation.

Notice the wording here - they go to great lengths to call the BBQ tanks a CYLINDER and the ASME cylinders a TANK.

The good LP dealers should understand the difference between the 2, the young kid that most of the time fills your tank doesn’t have a clue.

JR Wright
78 Buskirk Stretch
75 Avion
Michigan

On Dec 18, 2013, at 8:16 PM, Terry <mrbullitt@verizon.net> wrote:

>
>
> Does anyone know the inspection requirements for the GMC propane tanks? I guess the DOT requirements will surpass any state regs. Since it is not a portable tank, it doesn't get a regular inspection with a refill like the Blue Rhino setup for barbeque grills. Mine still holds fuel and is not rusted on the outside, but the propane dealer may need to know and I also don't want to get condemned at a tunnel or the side of the road by some random inspection.
> --
> Terry Kelpien
> 73 Glacier 260
> Smithfield, Va.
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J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
Re: [GMCnet] Propane tank inspection [message #233447 is a reply to message #233444] Wed, 18 December 2013 20:15 Go to previous messageGo to next message
Bullitthead is currently offline  Bullitthead   United States
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Very helpful, Thanks Steve and JR!

Terry Kelpien ASE Master Technician 73 Glacier 260 Smithfield, Va.
Re: Propane tank inspection [message #233493 is a reply to message #233438] Thu, 19 December 2013 14:50 Go to previous messageGo to next message
JohnL455 is currently offline  JohnL455   United States
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Someone explain the liquid over fill valve. Last time at Menards they didn't like mine but I only wanted a partial fill do they did it anyway.

John Lebetski
Woodstock, IL
77 Eleganza II
Re: [GMCnet] Propane tank inspection [message #233504 is a reply to message #233493] Thu, 19 December 2013 16:29 Go to previous messageGo to next message
emerystora is currently offline  emerystora   United States
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John - that is usually called the OPD. Overfill prevention device.
It is a requirement on DOT cylinders such as the common BarBQue cylinders (except for large ones).
It is NOT required on ASME tanks such as the ones mounted in GMC motorhomes so the person at Menards doesn't know the difference.

An OPD has a float inside the cylinder attached to the valve which shuts off the fill valve when the cylinder is 80% full.

You GMC ASME tank has a small valve that is cracked open when filling and when the tank is at the 80% point vapor/liquid propane begins to spurt out of the valve. That is when they should shut off the fill valve. I have had a fill jockey keep filling the tank in the past which does not allow any expansion of the product in the tank when it might warm up. This could allow liquid propane to go past the regulator and cause problems with your appliances (including a fire). I called the manager and explained that his fuel person overfilled my tank because they were charging me for more gallons that it should hold at the 80% level. He agreed and they bled off some of the propane and charged me less.

Emery Stora

On Dec 19, 2013, at 1:50 PM, "John R. Lebetski" <gransport@aol.com> wrote:

>
>
> Someone explain the liquid over fill valve. Last time at Menards they didn't like mine but I only wanted a partial fill do they did it anyway.
> --
> John Lebetski
> Chicago, IL
> 77 Eleganza II
> Source America First
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Re: [GMCnet] Propane tank inspection [message #233508 is a reply to message #233493] Thu, 19 December 2013 17:00 Go to previous messageGo to next message
USAussie is currently offline  USAussie   United States
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John,

Here's a link to a photo of a GMC LPG tank.

http://www.gmcmhphotos.com/photos/albuquerque-caravan/p9390.html

Mounted in the tank from left to right are:

1) Gage
2) Vent valve (Overfill?)
3) Fill Adapter
4) Supply shutoff valve (on the left side of the valve is a relief valve)

Assuming that 2) is the valve that Menards didn't like I have no idea why they didn't like it as long as when it's open it releases
gas while LPG goes into the tank.

Regards,
Rob M.
Sydney, Australia


-----Original Message-----
From: John R. Lebetski

Someone explain the liquid over fill valve. Last time at Menards they didn't like mine but I only wanted a partial fill do they did
it anyway.
--
John

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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426
Re: Propane tank inspection [message #233519 is a reply to message #233438] Thu, 19 December 2013 18:41 Go to previous message
JohnL455 is currently offline  JohnL455   United States
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Got it. I think mine needs to be unstuck. Emery's explanation matches the Menards guy story. Maybe a plier and rag to exercise it once is all it needs.

John Lebetski
Woodstock, IL
77 Eleganza II
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