PD ISO/TS 16479:2012
Current
The latest, up-to-date edition.
Thermoplastics pipes for the conveyance of fluids. Determination of the slow cracking resistance of pipes and fittings using the Notched Ring Test (NRT)
Hardcopy , PDF
English
30-11-2012
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Test specimen
7 Procedure
8 Test report
Annex A (informative) - On-set slow cracking time detection
Annex B (informative) - Stress intensity factor plot
Annex C (informative) - Flexure load estimation
Bibliography
Defines the slow cracking resistance of pipes and fittings using the Notched Ring Test (NRT) which is a method for determining the slow crack resistance of thermoplastics resins and compounds in pipe form and/or finished products (e.g. pipes and fittings) from which a ring specimen can be cut and notched.
| Committee |
PRI/88
|
| DevelopmentNote |
Reviewed and confirmed by BSI, May 2016. (05/2016)
|
| DocumentType |
Standard
|
| Pages |
30
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
This Technical Specification determines the slow cracking resistance of pipes and fittings using the Notched Ring Test (NRT) which is a method for determining the slow crack resistance of thermoplastics resins and compounds in pipe form and/or finished products (e.g. pipes and fittings) from which a ring specimen can be cut and notched. The test is performed under sustained constant loading in a test medium at a specified temperature and the time to the on-set of slow cracking is measured. This method applies to the rings from pipes or fittings having a wall thickness greater than 5mm. This Technical Specification specifies the method of testing using notched ring specimens directly obtained from pipes or fittings.
| Standards | Relationship |
| ISO/TS 16479:2012 | Identical |
| ISO 6108:1978 | Double equal angle cutters with plain bore and key drive |
| ISO 13479:2009 | Polyolefin pipes for the conveyance of fluids — Determination of resistance to crack propagation — Test method for slow crack growth on notched pipes |
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