A user must cause -
- steam generators or pressure vessels, including pressure and safety accessories, after they are installed or reinstalled and before they are commissioned, to be subjected to a witnessed internal and external inspection of a hydraulic pressure test to 1,25 times the design pressure by an approved inspection authority;
- piping to be inspected and tested by the manufacturer after manufacture, installation, modification or repair and before commissioning;
- every fire-tube steam generator to be subjected to an external inspection every 12 months and a witnessed hydraulic test and crack detection of critical welds every 36 months, by an approved inspection authority for in-service inspection appointed by the user in writing;
- every pressure vessel and steam generator to be
subjected to an internal and external inspection and a hydraulic test to a pressure of 1,25 times the design
pressure by an approved inspection authority for in-service inspection appointed by the user in writing, at intervals not exceeding 36 months; and
- all piping and pipelines to be inspected and tested in accordance with the in-service health and safety standard: