scope:

This part of Defence Standard 02-729 defines the minimum requirements for methods of detection of surface discontinuities in ferrous and non-ferrous materials using liquid penetrant examination techniques.

The requirements of this Defence Standard (Def Stan) are applicable to all items for which specifications, standards, drawings, refit or repair instructions require liquid penetrant examination. It is also applicable to the Quality Assessment of Examining Authorities who perform liquid penetrant examination.

The extent to which liquid penetrant examinations are required is not included herein but will be found in the relevant Contract Documents.

The Def Stan does not contain acceptance criteria for defects and does not apply to the examination of nuclear plant and machinery.