BS ISO BRITISH STANDARD 16241:2005 Notch tensile test to measure the resistance to slow crack growth of polyethylene materials for pipe and fitting products (PENT) Confirmed September 2008 res 23.040.20; 25.040.45 BSi NOCOPYINGWITHOUTBSIPERMISSIONEXCEPTASPERMITTEDBYCOPYRIGHTL British Standards BS ISO 16241:2005 National foreword This British standard reproduces verbatim rs0 16241:2005 and implements it as the UK national standard. The UK participation in its preparation was entrusted by Technical eommittee PRr/88, Plastic piping systems, to subcommittee PRr/88/4, Method of tests for plastic piping systems and components, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interestsinformed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British standards which implement international publications referred to in this document may be found in the BSI Catalogue under the section entitled "rnternational standards eorrespondence rndex", or by using the "search' facility of the BSI Electronic Catalogue or of British standards Online. This publication does not purport to include all the necessary provisions of a contract.Usersareresponsibleforitscorrectapplication. Compliance with a British Standard does not ofitself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the rsO title page, pages ii to v, a blank page, pages 1 to 13 and a back cover. The Bsr copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication This British standard was publishedundertheauthority Amd. No. Date eomments of the standards Policy and strategyeommittee 0n 23August 2005 @ Bsr 23 August 2005 ISBN 0 580 46143 2 BS ISO 16241:2005 INTERNATIONAL ISO STANDARD 16241 First edition 2005-02-15 Notch tensile test to measure the resistance to slow crack growth of polyethylene materials for pipe and fitting products (PENT) Essai de traction d'une entaille pour mesurer la resistance a la propagation lente defissure des polyethylenes pour tubes et raccords (PENT) Reference number ISO 16241:2005(E) BS ISO 16241:2005 ii BS ISO 16241:2005 Contents Page Foreword iv Introductior 1 Scope 2 Normative references 3 Terms and definitions 4 Principle 5 Apparatus. 6 Test piece preparation. 6.1 Test piece geometry.. 6.2 Test piece preparation . 6.3 Test piece notching ... 6.4 Number of test pieces. 7 Preconditioning 8 Procedure... 8.1 Calculation of test mass 8.2 Loading the test piece.. 8.3 Checking temperature... 8.4 Recording time to failure 8.5 Examination of failed test piece.. 9 Test report. Annex A (informative) Application of the test.. .8 Annex B (informative) Measurement of extension .. 9 Annex C (informative) Notch depth.. 10 Annex D (informative) Recommended minimum requirements for polyethylene ... 11 Annex E (informative) Precision... 12 Bibliography. 13 ili BS ISO 16241:2005 Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies technicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeen non-governmental, in liaison with isO, also take part in the work. sO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2. International Standard requires approval by at least 75 % of the member bodies casting a vote. rights. isO shall not be held responsible for identifying any or all such patent rights. ISO 16241 was prepared by Technical Committee ISO/TC 138, Plastics