Fittings need to be visually inspected to insure ferules are in place and correctly positioned prior to swageing.
Research staff are responsible for communicating system specifications [gas type, Maximum Allowable Working Pressure(MAWP)] and testing requirements to service provider.
Lines that run through ceilings and chases should be pressure-tested at the MAWP of the materials of that line.
System owners/users should specify QA requirements such as leak testing and service providers/installers must provide appropriate documentation.
System owners/users should document that they have accepted work.
The system owner is responsible for tracking, through safety documentation such as IOPS or SOPs, system modifications and procedural changes. Use of safety documentation prevents off normal events that could arise through staff turnover.
Best practices related to fittings and joints in compressed hydrogen gas piping systems are discussed in the Hydrogen Safety Best Practices Manual.