BS ISO 18851:2015 BSl Standards Publication Plastics piping systems - Glass-reinforced thermosetting plastics (GRP) pipes and fittings - Test method to prove the structural design of fittings bsi. ..making excellence a habit. BS ISO 18851:2015 BRITISH STANDARD National foreword This British Standard is the UK implementation of IS18851:2015. The UK participation in its preparation was entrusted to Technical Committee PRI/88/2, Plastics piping for pressure applications. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. @The British Standards Institution 2015 Published by BSI Standards Limited 2015 ISBN 978 058083274 1 ICS 23.040.20 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31March 2015. Amendments/corrigenda issued since publication Date Textaffected BS ISO 18851:2015 ISO INTERNATIONAL STANDARD 18851 First edition 2015-03-15 Plastics piping systems Glass- reinforced thermosetting plastics (GRP) pipes and fittings s - Test method to prove the structural design of fittings Systemes de canalisation en matieres plastiques-Tubes et raccords plastiquesthermodurcissablesrenforcésdeverre(PRV)Methode d'essaipourprouverla conception structurelledesraccords Reference number IS0 18851:2015(E) ISO @ISO2015 BSISO18851:2015 IS018851:2015(E) COPYRIGHTPROTECTEDDOCUMENT IS02015 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying,or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56 : CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland i ISO2015-Allrights reserved BSISO18851:2015 IS0 18851:2015(E) Contents Page Foreword ..iv 1 Scope. ..1 2 Termsand definitions 3 Principle 4 Apparatus. .2 4.1 End sealing devices .2 4.1.1 .2 General. 4.1.2 Capable of applying the end loads 2 22 4.1.3 Not capable of applying the end loads 4.2 Supports.. 22 4.2.1 End thrust supports 4.2.2 Straps and Cradles. 4.3 Sourceof hydrostaticpressure 2 4.4 Means to measure the gauge pressure 2 5 Test pieces 2 5.1 Test arrangement .2 .3 5.2 Number of test pieces Conditioning. 6 .4 7 Test temperature. ..4 8 Procedure .4 8.1 Teststobeperformed .4 8.2 Test Failure Criteria. 4 8.2.1 Bursting .4 8.2.2 Leaking. ..4 8.2.3 Weeping .4 8.3 Initial leakage. 8.4 Resistanceto internal pressure .5 9 Test report .5 Bibliography .7 @IS0 2015 -All rights reserved ili BSISO18851:2015 IS0 18851:2015(E) Foreword Iso (the International Organizationfor Standardization) is a worldwide federation ofnational standards bodies (iso member bodies).The work of preparing International Standards is normally carried out throughIsOtechnicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with Iso, also take part in the work. Iso collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the ISo/IEc Directives, Part 1. In particular the different approval criteria needed for the differenttypesof Isodocumentsshouldbenoted.Thisdocumentwasdrafted inaccordancewiththe editorial rules of the ISo/IEC Directives, Part 2 (seewww.iso.org/directives). Atte