scope:

This standard has been prepared for the visual inspection of aluminum alloy compressed gas cylinders with service pressures of 1800 psi (12 410 kPa) or greater.² This standard does not address all cylinder manufacture defects. Cylinders authorized by regulation may require testing by ultrasonic examination (UE) or pressure testing. This standard does not include testing that may be required by regulation. UE of aluminum alloy cylinders shall meet the requirements of CGA C-20, Methods for Ultrasonic Examination of Metallic, DOT and TC 3- Series Gas Cylinders and Tubes [6]. Pressure testing shall meet regulatory requirements.

Additional publications and standards prepared by the Compressed Gas Association, Inc. (CGA) that can be helpful include:

- CGA C-1, Methods for Pressure Testing Compressed Gas Cylinders [1];

- CGA C-6, Standards for Visual Inspection of Steel Compressed Gas Cylinders [7];

- CGA C-6.2, Guidelines for Visual Inspection and Requalification of Fiber Reinforced High Pressure Cylinders [8];

- CGA C-6.3, Standard for Visual Inspection of Low Pressure Aluminum Alloy Compressed Gas Cylinders [9];

- CGA C-20 [6];

- CGA V-11, General Guidelines for the Installation of Valves into High Pressure Aluminum Alloy Cylinders [10];

- CGA P-38, Guidelines for Devalving Cylinders [11]; and

- CGA S-1.1, Pressure Relief Device Standards-Part 1-Cylinders for Compressed Gases [12].

This standard is directed at cylinders with a service pressure of 1800 psi (12 410 kPa) or greater. CGA C-6.3 shall be followed for cylinders with lower service pressure [9].