NEN ISO 15626 : 2018 en
Current
The latest, up-to-date edition.
Non-destructive testing of welds - Time-of-flight diffraction technique (TOFD) - Acceptance levels
Hardcopy
English
31-07-2018
.Foreword.......................................................................................................................................................................................................................................iv
1 Scope.................................................................................................................................................................................................................................1
2 Normative references......................................................................................................................................................................................1
3 Terms and definitions.....................................................................................................................................................................................1
4 Symbols..........................................................................................................................................................................................................................1
5 Relation between quality levels and acceptance levels................................................................................................1
6 Definition and determination of length and height.........................................................................................................2
6.1 General........................................................................................................................................................................................................... 2
6.2 Determination of length.................................................................................................................................................................. 2
6.2.1 General...................................................................................................................................................................................... 2
6.2.2 Length sizing of elongated straight indications .................................................................................... 2
6.2.3 Length sizing of elongated curved indications ...................................................................................... 3
6.3 Determination of height.................................................................................................................................................................. 4
6.3.1 General...................................................................................................................................................................................... 4
6.3.2 Surface‑breaking discontinuities....................................................................................................................... 5
6.3.3 Embedded discontinuities....................................................................................................................................... 6
7 Acceptance levels .................................................................................................................................................................................................6
7.1 General........................................................................................................................................................................................................... 6
7.2 Indications from single discontinuities ............................................................................................................................. 7
7.2.1 General...................................................................................................................................................................................... 7
7.2.2 Acceptance level 1 .......................................................................................................................................................... 7
7.2.3 Acceptance level 2 .......................................................................................................................................................... 8
7.2.4 Acceptance level 3 .......................................................................................................................................................... 8
7.3 Total length of indications............................................................................................................................................................. 8
7.4 Grouping of indications................................................................................................................................................................... 9
7.5 Point‑like indications......................................................................................................................................................................... 9
Bibliography.............................................................................................................................................................................................................................11
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