scope:

The purpose of this document is to provide practical advice on how legal compliance should be demonstrated where on-site manufacture and assembly of pressure equipment are undertaken under the direct control of the intended user of the equipment (and shall be subsequently referred to as "the end user" in this document).

A summary of the various design, construction and installation assessment routes related to pressure equipment are illustrated in the flowchart (Figure 1) below. The end user should follow this flowchart, to ensure they have correctly followed the appropriate compliance route.

NOTE 1 - In exceptional circumstances where the GCA cannot be completed, the end user may assume the role for the on-site assessment. This is shown in green in Figure 1

NOTE 2: For "CE" mark, after 31 December 2020 a UKCA mark is allowed and after 31 December 2021 a UK CA mark is required in lieu of or in addition to a CE mark.