BS M 42:1972

Foreword
METHODS
1. Scope
2. Definitions
3. Classification of welds
4. Application of methods
4.1 Visual inspection
4.2 Other methods
5. Procedures for fusion welds
5.1 Visual inspection
5.2 Penetrant inspection
5.3 Magnetic particle inspection
5.4 Radiographic inspection
5.5 Ultrasonic inspection
6. Procedures for resistance welds
6.1 Visual inspection
6.2 Penetrant inspection
6.3 Magnetic particle inspection
6.4 Radiographic inspection
TABLE
1. Application of NDT methods other than visual
     inspection
FIGURES
1. Weld accessible: internal diameter 40 mm or greater
2. Weld inaccessible: internal diameter 40 mm or greater
3. Internal diameter greater than 6 mm and less than
     40 mm
4. Internal diameter less than 6 mm

Describes the non-destructive testing of fusion and resistance welds in aerospace materials having a thickness of 2.5 mm and less. Applies to the inspection of materials and components both during manufacturing and in service. Covers visual, penetrant, magnetic particle, radiographic and ultrasonic inspection appropriate to the type of defect being sought, together with any limitations in the use of particular techniques.

1.1 This British Standard covers the non-destructive testing of fusion and resistance welds in aerospace mat-erials having a thickness of 2.5 mm and less. It applies to the inspection of materials and components both during the manufacturing stage and in service.

1.2 The standard accordingly covers visual, penetrant, magnetic particle, radiographic and ultrasonic inspection appropriate to the type of defect being sought, together with any limitations in the use of particular techniques.