In addition to large concept design and analysis projects, GRE also produces many small vacuum insulated pipework sub-assemblies and lines, where clients either need a routine replacement or performance improvement.
In this instance, the client was experiencing such a high level of gaseous nitrogen boil-off that the quality of liquid at their point of use was not good enough. They also required an additional isolation valve with safety pressure relief.
After surveying the area, GRE designers produced a compact valve train with two isolation valves, integrated gas vent and pressure relief device, together with a gas exhaust vent and GRE’s popular heated vent tip with integral check valve.
Once designed and manufactured, the system was installed, tested and commissioned by GRE engineers.
As with all of GRE’s vacuum insulated pipework/systems the client was then presented with a comprehensive document package including:
- Full system P & ID with mechanical drawings for each component
- Material Test Certificates
- Individual line/component factor test reports (Vacuum Conditioning, Helium leak and positive pressure tests)
- Site Acceptance test report (Helium leak and positive pressure tests)
- Installation and operation manuals
- Declaration of conformance documentation
All actuated and manual isolation valves were from the Stohr range of cryogenic equipment, provided by Gas and Liquid Controls Ltd www.gasandliquidcontrols.com