CEN/TC 138/WG 8 - Visual examination

This European Standard defines terms used in visual testing.

This European Standard describes general requirements for equipment used in visual testing.
The application of equipment is necessary in visual testing when:
¾ objects, which are visually or on account of environmental factors not accessible, need to be made accessible to viewing;
¾ the test sensitivity is insufficient;
¾ an imaging record is required.
This European Standard includes the verification of equipment.

This European Standard describes the general principles required for the visual testing of all types of components both directly and remotely. Visual testing is generally used to determine, for example, the surface condition of the part, alignment of mating surfaces, shape, or evidence of leakage. This includes the interpretation of readings from measuring equipment. In addition, visual testing is used to determine a composite material's (translucent laminate) subsurface conditions.