The following is a list of written interpretations from Office of Hazardous Materials pertaning to the requalification of cylinders.

You can view all interpretation letters, sorted by date, to the Office of Hazardous Materials by clicking here or sorted by regulation section here

May 13, 2008 Letter of Interpretation concerning the use of latest edition CGA pamphlets vs cited editions

May 17, 2007 Letter of Interpretation About Marking a "VE" on Cylinders That Do Not Require a Eddy Current Examination

June 5, 2006 Letter of Interpretation that allows the end use to star stamp a cylinder

May 24, 2006 Letter of Interpertation Concerning the Proof Testing Requirements of Specification 4B Refrigerent Cylinders

March 23, 2006 Letter of Interpretation Concerning the Use of 3HT Specification Cylinders in the Paintball Industry - DOT's Interpretation May Suprise You !

September 13, 2004 Letter of Interpretation Concerning Condemned Markings, Maximum Test Pressures, Repeated Test, Star Stamping, Publication Dates

December 17, 2002 Letter of Interpretation Concerning Required Training Being Provided By Independent Inspectors

November 27, 2002 Letter of Interpretation Concerning the use of Labels on Fire Extinguishers

April 2, 2002 Letter of Interpretation Concerning Requalification of 4B Cylinders by Non Licensed Company

March 26, 2002 Letter of Interpretation Concerning Testing of E8840 Exemption Cylinder

November 30, 2001 Letter of Interpretation Concerning Transportation of Cylinder After 15 Year Life

June 21, 2001 Letter of Interpretation Concerning Condemning a Cylinder by a Unauthorized Person

March 15, 2001 Letter of Interpretation Concerning Number of Repeat Test