Carleton Technologies Inc

Carleton Technologies Inc, has been granted an extension to the 3-year retest requirement for carbon fiber full composite cylinders!

The Department of Transportation has granted Carleton Technologies Inc, Pressure Technology Division (Carleton PTD) an extension to the 3-year hydrostatic retest procedure for all carbon fiber full composite cylinders manufactured to DOT CFFC Exemption DOT-E-11194.

The retest requirement, by law, is now every 5 years and is based upon the following conditions:

  • Cylinders tested prior to July 1, 2001 must be retested within 36 months of the retest date marked on the cylinder.

  • Cylinders manufactured or tested after July 1, 2001 must be re-inspected and hydrostatically retested at least once every 5 years.
The granting of the DOT extension is great news for users of Carleton PTD cylinders because it will reduce the number of retests required over the current 15-year life of the composite cylinder. This will result in lower operating cost for users of our composite cylinders.

This extension DOES NOT pertain to Carleton PTD fiberglass cylinders manufactured to DOT FRP-1 Exemption DOT-E-11005. These cylinders must still be retested every 3 years.

Cylinder Safety Bulletins and Updates:

What should you do if your composite pressure vessel gets a scratch, ding, dent or other form of impact damage?

Carleton Technologies Inc, has been granted an extension to the 3-year retest requirement for carbon fiber full composite cylinders.

Federal law requires that E-11194 carbon fiber CFFC cylinders manufactured or retested
after July 1, 2001 must be retested every 5 years.

Federal law requires that E-11005 fiberglass FRP cylinders must be retested every 3 years.

Paintball Cylinders - Excessive heat due to fast filling can damage a composite pressure vessel!

SCBA Cylinders - When trans-filling an SCBA cylinder, follow these rules...

When removing valves from composite pressure vessels use extreme care and be sure to protect the composite overwrap from harsh fixtures and tool handling!