BS EN 12953-5-2020 Shell boilers Part 5: Inspection during construction, documentation and marking of pressure parts of the boiler. 5 Inspection and testing 5.1 General The manufacturer shall be responsible for ensuring the boiler conforms to the requirements of this European Standard. Conformity shall be confirmed by the completion of a series of inspection activities as given in Table 1. Depending upon the conformity assessment module chosen by the manufacturer for the design and manufacture of each boiler, the inspection activities shall involve, to a greater or lesser extent, organizations which are independent of the manufacturer. The manufacturer shall provide all the necessary access to enable the responsible authority to carry out the activities in which it is required to be involved. 5.2 Approval of personnel 5.2.1 Check of welder and welding operator approval The manufacturer shall ensure that the welding of the boiler has been done by welders and welding operators who have been approved under the requirements of EN 12953-4:2018, 5.14 and the appropriate certification shall be made available on request. 5.2.2 Approval of non-destructive examination personnel Personnel responsible for non-destructive testing, including interpretation, evaluation and reporting shall be certified in accordance with the general requirements of EN ISO 9712:2012. An exception to this requirement shall be made for visual testing of welds and final inspection of boilers, for which EN ISO 97 12:2012 is not applicable. Magnetic particle testing (MT) shall be performed under the direct supervision of personnel qualified to level 2 of EN ISO 9712:2012 as a minimum. Penetrant testing (PT) shall be performed under the direct supervision of personnel qualified to level 2 of EN ISO 9712:2012 as a minimum. Ultrasonic testing (UT) shall be performed by an operator qualified to level 2 of EN ISO 9712:2012 as a minimum for UT. Images of radiographic testing (RT) shall be viewed by personnel qualified to level 2 of EN ISO 9712:2012 as a minimum. For new NDT techniques, the operator shall be qualified to the equivalent level as MT, PT, UT and RT. Visual testing (VT) shall be carried out by trained and experienced personnel having sufficient knowledge in welding techniques, and a full comprehension of this European Standard, to identify and interpret imperfections that might occur at the surface of the weld and the heat affected zone. 5.3 Calibration of equipment The manulacturer shall establish procedures to ensure that tools, gauges, instruments and other...
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