This document specifies requirements and gives recommendations for the periodic inspection and testing of permanently mounted tubes of:

• composite with seamless metallic liners;
• composite with non-load-sharing liners;
• seamless steel;

in battery vehicles and multiple element gas containers (MEGCs) including frames and associated equipment (these components are also inspected);

and large tubes of:

• composite with seamless metallic liners;
• composite with non-load-sharing liners;

in modules including frames and associated equipment (these components are also inspected).