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CGA C-28-2026
Guideline for Heat Exposure Indicating Systems on Aluminum Alloy Cylinders
Exposure to temperatures above 350 °F (177 °C) can weaken aluminum cylinders and make them unsafe to fill, even when no visible damage is present. This publication recommends using heat-indicating systems to identify cylinders that may have been exposed to elevated temperatures. This publication applies to high pressure, seamless refillable aluminum alloy cylinders. While not addressed in this publication, a heat indicating system can also be used on refillable low pressure, aluminum alloy cylinders.
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Compressed Gas Association, Inc. [cga]