NEN EN 571-1 : 1997

Foreword
1 Scope
2 Normative references
3 Definitions
4 Safety precautions
5 General principles
6 Products, sensitivity and designation
7 Compatibility of testing materials with the part(s)
    to be tested
8 Test procedure
9 Test report
Annexes
A (normative) Main stages of the penetrant examination
B (informative) Example of a test report

Specifies a method for penetrant testing for detection of discontinuities, such as cracks, laps, folds, porosity and lack of fusion which are open to the surface of the material for testing. Applicable mainly to metallic materials but is also performed on other materials if they are inert to the test media, and are not excessively porous, eg castings, forgings, welds, ceramics, etc.