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CGA C-6

11th Edition, 2013

Complete Document

Standards for Visual Inspection of Steel Compressed Gas Cylinders



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Product Details:

  • Revision: 11th Edition, 2013
  • Published Date: June 28, 2013
  • Status: Active, Most Current
  • Document Language: English
  • Published By: Compressed Gas Association (CGA/GAS)
  • Page Count: 30
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

This standard provides cylinder users (requalifiers, owners, fillers, operators, etc.) with criteria to accept, reject, and condemn steel compressed gas cylinders. This standard does not cover all circumstances for each individual cylinder type and condition of lading.

NOTE—Special permit cylinders may contain their own visual inspection criteria in the special permit.

In situations where a particular cylinder design type is not covered by this standard, users shall modify their inspection procedures. If a particular compressed gas service has unique detrimental effects on a cylinder's internal or external condition, these shall also be considered by the user.

Experience in the inspection of cylinders is an important factor in determining the acceptability of a given cylinder for continued service. Users lacking this experience who have questionable cylinders should return them to a manufacturer of the same type of cylinders or to a competent requalification agency for re-inspection.

Suggestions contained in this standard do not apply to cylinders manufactured under specification DOT-3HT, CTC-3HT, or TC-3HTM. Because of the special provisions of that specification, separate recommendations covering service life and standards for visual inspection of these cylinders are contained in CGA C-8, Standard for Requalification of DOT-3HT, CTC-3HT, and TC-3HTM Seamless Steel Cylinders [3]. For cylinders manufactured under specification DOT-8, DOT-8AL, CTC-8, CTC-8AL, CTC-8WC, TC-8WM, or TC-8WAM, see CGA C-13, Guidelines for Periodic Visual Inspection and Requalification of Acetylene Cylinders [4]. For aluminum alloy cylinders, see CGA C-6.1, Standard for Visual Inspection of High Pressure Aluminum Alloy Compressed Gas Cylinders; CGA C-6.2, Standard for Visual Inspection and Requalification of Fiber Reinforced High Pressure Cylinders; and CGA C-6.3, Standard for Visual Inspection of Low Pressure Aluminum Alloy Compressed Gas Cylinders [5, 6, 7].

Inspection procedures include preparation of cylinders for inspection, exterior inspection, interior inspection (if required), nature and extent of damage to be looked for, and some tests that indicate the conditions of the cylinder, etc. A sample inspection report is shown in Appendix A that may be revised to suit the user's requirements.