Due to expansions within our technical department, we can now offer Design and Verification Services for vessels to PD 5500. This British Standard specifies requirements for the design, construction, inspection, testing, and verification of unfired fusion welded pressure vessels. For vessels that fall into PED Categories II and above, we typically recommend that clients design these vessels to PD 5500 Category 3 Form ‘X’.
The design verification process for such vessels is thorough. Firstly, a Notified Body (such as TUV UK Limited) verifies the design before manufacture commences. Subsequently, the Notified Body inspects both the vessel itself and the necessary documentation throughout the manufacturing stages and during final hydraulic testing. We can also make arrangements to include Radiographic Testing (NDT) at an additional cost if required by the specification or client.
The standard documentation package we provide as part of our PD 5500 offer typically includes items such as a Quality Plan, Material Certificates, Welding Procedures (WPS), Welder Qualification Records (WQR), Hydraulic Test Certificate, Form ‘X’ documentation, Declaration of Conformity, Certificate of Conformity from the Notified Body (NoBo), a General Assembly Drawing, and a copy of the Nameplate.
