scope:

This International Standard provides general guidance on the verification procedures to be applied when carrying out penetrant inspection, for example in accordande with ISO 3452. These tests are intented to ensure that the penetrant system is functioning correctly and that there has been no harmful detoriation of the process materials during service. Generally, the frequency of checking penetrant materials and black light sources will depend on the frequency and conditions of usage. Specific and maximum intervals should be recommended by the manufacturer.