In accordance with Annex I Section 3.2.2 in the course of the final assessment pressure equipment must be subjected to a test for the pressure containment aspect. As a rule, this test for the pressure containment aspect is supposed to be carried out in the form of a hydrostatic pressure test. Where this is not possible or disadvantageous other procedures are permissible.
The pressure value chosen for carrying out a hydrostatic pressure test must be such as to assure testing the pressure containment aspect of the pressure equipment with due consideration of the determined safety factors without causing a damage to the pressure equipment. Annex I Section 7.4 provides additional formulas which may be applied only in due consideration of the above described general criteria (Annex I Section 3.2.2). The formulas in Annex I Section 7.4 should be considered for all items of pressure equipment, not only pressure vessels.