ISO 15848-2-2015 工业阀门.无组织排放的测量、试验和鉴定程序-第2部分:阀门生产验收试验.pdf

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ISO 2015Industrial valves Measurement,test and qualification procedures for fugitive emissions Part 2:Production acceptance test of valvesRobinetterie industrielle Mesurage,essais et modes opratoires de qualification pour missions fugitives Partie 2:Essais de rception en production des appareils de robinetterieINTERNATIONAL STANDARDISO15848-2Second edition2015-06-01Reference numberISO 15848-2:2015(E)ISO 15848-2:2015(E)ii ISO 2015 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2015All 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 ISOs member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel.+41 22 749 01 11Fax+41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in Switzerland ISO 15848-2:2015(E)Foreword.ivIntroduction.v1 Scope.12 Normative references.13 Terms and definitions.14 Preparation of test valves.14.1 Valve selection.14.2 Preconditioning.14.3 Stem(or shaft)seal adjustment.25 Test conditions.25.1 Test fluid.25.2 Leakage measurement.25.3 Test pressure.25.4 Test temperature.26 Test procedure and evaluation of test results.26.1 Measurement of stem(or shaft)seal leakages.26.2 Measurement of leakage of body seal(s).37 Marking.38 Certification of compliance.3 ISO 2015 All rights reserved iiiContents Page-,-,-ISO 15848-2:2015(E)ForewordISO(the International Organization for Standardization)is a worldwide federation of national standards bodies(ISO member bodies).The work of preparing International Standards is normally carried out through ISO technical committees.Each member body interested in a subject for which a technical 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 different types of ISO documents should be noted.This document was drafted in accordance with the editorial rules of the ISO/IEC Directives,Part 2(see is drawn to the possibility that some of the elements of this document may be the subject of patent rights.ISO shall not be held responsible for identifying any or all such patent rights.Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received(see trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment,as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade(TBT),see the following URL:Foreword Supplementary information.The committee responsible for this document is ISO/TC 153,Valves,Subcommittee SC 1,Design,manufacture,marking and testing.This second edition cancels and replaces the first edition(ISO 15848-2:2006)which has been technically revised.The main changes are the following:tightness classes(Table 1)are the following:A:50 ppmv;B:100 ppmv;C:200 ppmv if the reading exceeds the values of the required tightness class according to Table 1 or Table 2,the test is considered as having failed.Then,a corrective action is proposed and agreed with the purchaser or the lot of valves is rejected.ISO 15848 consists of the following parts,under the general title Industrial valves Measurement,test and qualification procedures for fugitive emissions:Part 1:Classification system and qualification procedures for type testing of valves Part 2:Production acceptance test of valves iv ISO 2015 All rights reserved-,-,-ISO 15848-2:2015(E)IntroductionThe aim of this part of ISO 15848 is to establish standard practice for the evaluation of production valves,the design of which has been successfully type-tested according to ISO 15848-1.ISO 2015 All rights reserved v-,-,-Industrial valves Measurement,test and qualification procedures for fugitive emissions Part 2:Production acceptance test of valves1 ScopeThis part of ISO 15848 specifies test procedures for the evaluation of external leakage of valve stems or shafts and body joints of isolating valves and control valves intended for application with volatile air pollutants and hazardous fluids.End connection joints,vacuum application,effects of corrosion,and radiation are excluded from this

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