Gasflaskor

This document describes the use of modal acoustic emission (MAE) testing during periodic inspection and testing of hoop wrapped and fully wrapped composite transportable gas cylinders and tubes, with aluminium-alloy, steel or non-metallic liners construction, intended for compressed and liquefied gases under pressure.

This document addresses the periodic inspection and testing of composite cylinders constructed to ISO 11119‑1, ISO 11119‑2, ISO 11119‑3, ISO 11515 and ISO/TS 17519 and can be applied to other composite cylinders designed to comparable standards when authorized by the competent authority.

Unless noted by exception, the use of “cylinder” in this document refers to both cylinders and tubes.

This document provides requirements to and recommendations for the periodic inspection and testing of permanently mounted tubes of: 

• Composite with seamless metallic liners,

• Composite with non-loadsharing liners,

• Seamless steel.

and large tubes of:

·  Composite with seamless metallic liners,

• Composite with non-loadsharing liners,

 including frames and associated equipment.

NOTE 1: This scope includes battery vehicles and multi-element gas containers as defined in ISO 10286 using tubes and large tubes that are permanently mounted.