Composite Propane Cylinders

Discussion in 'All Things Boats & Boating' started by missinginaction, Feb 2, 2021.

  1. BlueBell
    Joined: May 2017
    Posts: 1,569
    Likes: 398, Points: 83
    Location: Victoria BC Canada

    BlueBell "Whatever..."

    MIA,

    Maybe that's the truth of it, they're only good for five years.
    What did the manufacturer say or did you contact them?
     
  2. missinginaction
    Joined: Aug 2007
    Posts: 986
    Likes: 195, Points: 43, Legacy Rep: 512
    Location: New York

    missinginaction Senior Member

    Bluebell,

    According to the manufacturer these tanks have a 15 year service life. Re-certification criteria is spelled out in US DOT special permit 12706 which also states a 15 year service life (from date of manufacture). If you're curious I'll put a link below. The criteria is printed at the bottom of page 9 and continues onto page 11 of the document. I'm going to take SP12706 to a local welding supply business. I can't imagine that they would refuse to re-certify. But we'll just have to see.

    https://www.phmsa.dot.gov/approvals...e-serve/offer/SP12706.pdf/offerserver/SP12706

    MIA
     
  3. gonzo
    Joined: Aug 2002
    Posts: 15,142
    Likes: 909, Points: 123, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    You need to find someone with the equipment to laser-etch the recertification. I suppose if these cylinders become popular, testing places may buy the equipment to etch the recertification numbers.
     
  4. Ike
    Joined: Apr 2006
    Posts: 2,473
    Likes: 336, Points: 83, Legacy Rep: 1669
    Location: Washington

    Ike Senior Member

    I did a search on these tanks, Oddly enough you can get them from Walmart.
     
  5. Will Gilmore
    Joined: Aug 2017
    Posts: 472
    Likes: 196, Points: 43
    Location: Littleton, nh

    Will Gilmore Senior Member

    Does Walmart do a swap program like it does with metal? If that is the case, inspection may not be an issue.

    -Will (Dragonfly)
     
  6. BlueBell
    Joined: May 2017
    Posts: 1,569
    Likes: 398, Points: 83
    Location: Victoria BC Canada

    BlueBell "Whatever..."

    MIA is in NY and can't find anything on these.
    You'd think the manufacturer would be a little more forthcoming.
    He's got their literature it seems but no conversation about filling and recerts...
     
  7. gonzo
    Joined: Aug 2002
    Posts: 15,142
    Likes: 909, Points: 123, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    It's a new product, so it may be expecting to have a service network 5 years from now when they need recerts.
     
  8. Barry
    Joined: Mar 2002
    Posts: 1,400
    Likes: 218, Points: 63, Legacy Rep: 158

    Barry Senior Member

    "Viking Cylinders is the North American brand for Hexagon Ragasco’s composite LPG cylinder, a product that has been in production since 2000. With more than 9 million cylinders manufactured in Norway and sold around the world, the company has a reputation for producing the safest composite propane gas cylinders."

    According to Viking the re-certification metal decal is epoxied onto the tank. Lazer etching is not a requirement
     
  9. gonzo
    Joined: Aug 2002
    Posts: 15,142
    Likes: 909, Points: 123, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    Laser etching is required in the USA.
     
  10. cthippo
    Joined: Sep 2010
    Posts: 809
    Likes: 50, Points: 28, Legacy Rep: 465
    Location: Bellingham WA

    cthippo Senior Member

    Our SCBA bottles have tags epoxied on when they are hydro'd every 5 years.
     
  11. gonzo
    Joined: Aug 2002
    Posts: 15,142
    Likes: 909, Points: 123, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    They don't carry flammable gas. Read the link in post #17 it goes to the regulations for these tanks.
     
  12. Will Gilmore
    Joined: Aug 2017
    Posts: 472
    Likes: 196, Points: 43
    Location: Littleton, nh

    Will Gilmore Senior Member

    Since they are made of composite material, you could probably just laser etch the metal tag epoxied onto them.
     
  13. gonzo
    Joined: Aug 2002
    Posts: 15,142
    Likes: 909, Points: 123, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    Read the link. That would not comply with regulations.
     
  14. Barry
    Joined: Mar 2002
    Posts: 1,400
    Likes: 218, Points: 63, Legacy Rep: 158

    Barry Senior Member

    Gonzo
    You misread the document
    Page 10 #4 RETEST, which is what we are discussing here, requires a label affixed with and covered with epoxy. Your reference to the laser etching pertains to the original marking of the tanks, DOT approvals, etc

    The first test in 10 years,
     

  15. kach22i
    Joined: Feb 2005
    Posts: 2,414
    Likes: 111, Points: 63, Legacy Rep: 1222
    Location: Michigan

    kach22i Architect

Loading...
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.