BSI 16/30334714 DC:2016 Edition
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BS EN ISO 20485. Non-destructive testing. Leak testing. Tracer gas method
| Published By | Publication Date | Number of Pages |
| BSI | 2016 | 25 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 5 | Contents Page |
| 6 | Foreword |
| 7 | 1 Scope 2 Normative references 3 Terms and definitions 4 Principles of detection |
| 8 | 5 Generation and detection of tracer gas flow 5.1 Tracer gas flows into the object (Group A techniques) 5.2 Tracer gas flows out of the object (Group B techniques) 6 Apparatus — see EN 13625:2001 |
| 9 | 7 Object preparation 8 Group A techniques, tracer gas flowing into the object. 8.1 Initial system set up procedure |
| 10 | 8.2 Vacuum technique (total) test procedure (A.1) |
| 11 | 8.3 Vacuum technique (partial) test procedure (A.2) |
| 12 | 8.4 Vacuum technique (local) test procedure (A.3) 9 Group B techniques, tracer gas flowing out of object 9.1 General |
| 13 | 9.2 Initial system set up procedure 9.2.1 Ammonia test with colour-change reagents (B.1) 9.2.2 Tracer gas flowing out of the object (B.2, B.3, B.4, B.6) |
| 14 | 9.2.3 Pressurisation — evacuation test (B.5) 9.3 Ammonia test procedure (B.1) 9.3.1 Test object preparation 9.3.2 Reagent application |
| 15 | 9.3.3 Ammonia pressurization 9.3.4 Impregnation time 9.3.5 Visual examination |
| 16 | 9.3.6 Post test cleaning 9.4 Vacuum box test procedure (B.2.1, B.2.2) 9.4.1 Technique B.2.1 9.4.2 Technique B.2.2 9.5 Accumulation technique procedure (B.3) |
| 17 | 9.5.1 Pressure technique by accumulation (B.3.1) |
| 18 | 9.6 Sniffing test (B.4) |
| 19 | 9.7 Bombing technique (B.5) |
| 21 | 9.8 Vacuum chamber technique (B.6) 9.9 Carrier gas technique (B.7) |
| 22 | 10 Test report |
| 24 | Annex A (informative)Accumulation technique: calibrated leak connected to enclosure of unknown volume |
