ANNEX VApplicable test procedures for hydrogen components, other than containers, designed to use compressed (gaseous) hydrogen
| TYPE OF TEST | ||||||
|---|---|---|---|---|---|---|
| HYDROGEN COMPONENT | Material tests | Corrosion resistance test | Endurance test | Pressure cycle test | Internal leakage test | External leakage test |
| Pressure relief devices |  |  |  |  |  |  |
| Automatic valves |  |  |  |  |  |  |
| Manual valves |  |  |  |  |  |  |
| Non-return valves |  |  |  |  |  |  |
| Pressure relief valves |  |  |  |  |  |  |
| Heat exchangers |  |  |  |  | ||
| Refuelling connections or receptacles |  |  |  |  |  |  |
| Pressure regulators |  |  |  |  |  |  |
| Sensors for hydrogen systems |  |  |  |  |  | |
| Flexible fuel lines |  |  |  |  |  | |
| Fittings |  |  |  |  |  | |
| Hydrogen filters |  |  |  |  | ||
| Removable storage system connectors |  |  |  |  |  | |
Subject to specific requirements for any of the hydrogen components, the test procedures to be applied for the type-approval of hydrogen components, other than containers, designed to use compressed (gaseous) hydrogen must include: