1、November 2015English price group 7No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 23.060.01!%G(D“2360533www.din.deD
2、IN EN ISO 15848-2Industrial valves Measurement, test and qualification procedures for fugitive emissions Part 2: Production acceptance test of valves (ISO 15848-2:2015);English version EN ISO 15848-2:2015,English translation of DIN EN ISO 15848-2:2015-11Industriearmaturen Mess-, Prf- und Qualifikati
3、onsverfahren fr flchtige Emissionen Teil 2: Fertigungsbegleitende Abnahmeprfung von Armaturen (ISO 15848-2:2015);Englische Fassung EN ISO 15848-2:2015,Englische bersetzung von DIN EN ISO 15848-2:2015-11Robinetterie industrielle Mesurage, essais et modes opratoires de qualification pour missions fugi
4、tives Partie 2: Essais de rception en production des appareils de robinetterie (ISO 15848-2:2015);Version anglaise EN ISO 15848-2:2015,Traduction anglaise de DIN EN ISO 15848-2:2015-11SupersedesDIN EN ISO 15848-2:2006-11www.beuth.deDTranslation by DIN-Sprachendienst.In case of doubt, the German-lang
5、uage original shall be considered authoritative.Document comprises 9 pages10.15 DIN EN ISO 15848-2:2015-11 2 A comma is used as the decimal marker. National foreword This document (EN ISO 15848-2:2015) has been prepared by Technical Committee ISO/TC 153 “Valves” in collaboration with Technical Commi
6、ttee CEN/TC 69 “Industrial valves” (Secretariat: AFNOR, France). The responsible German body involved in its preparation was the DIN-Normenausschuss Armaturen (DIN Standards Committee Valves), Working Committee NA 003-01-01 AA Grundnormen. Amendments This standard differs from DIN EN ISO 15848-2:200
7、6-11 as follows: a) the tightness classes (Table 1) are the following: A: 50 ppmv, B: 100 ppmv; C: 200 ppmv; b) 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
8、 with the purchaser or the lot of valves is rejected. Previous editions DIN EN ISO 15848-2: 2006-11 EN ISO 15848-2June 2015ICS 23.060.01 Supersedes EN ISO 15848-2:2006English VersionIndustrialvalves-Measurement,testandqualificationprocedures for fugitive emissions - Part 2: Productionacceptance test
9、 of valves (ISO 15848-2:2015)Robinetterie industrielle - Mesurage, essais et modesopratoires de qualification pour missions fugitives - Partie 2:Essais de rception en production des appareils derobinetterie (ISO 15848-2:2015)Industriearmaturen - Mess-, Prf- undQualifikationsverfahren fr flchtige Emi
10、ssionen - Teil 2:Fertigungsbegleitende Abnahmeprfung von Armaturen(ISO 15848-2:2015)This European Standard was approved by CEN on 7 February 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of
11、a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German).
12、 A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cy
13、prus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United K
14、ingdom. CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 15848-2:2015 EEUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE
15、 FR NORMUNGEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORM2DIN EN ISO 15848-2:2015-11 EN ISO 15848-2:2015 (E) Contents Page Foreword .3 Introduction .4 1 Scope .5 2 Normative references5 3 Terms and definitions .5 4 Preparation of test valves 5 4.1 Valve selection . 5 4.2 Preconditioning. 5 4.3 Stem
16、 (or shaft) seal adjustment . 6 5 Test conditions 6 5.1 Test fluid 6 5.2 Leakage measurement . 6 5.3 Test pressure . 6 5.4 Test temperature 6 6 Test procedure and evaluation of test results .6 6.1 Measurement of stem (or shaft) seal leakages. 6 6.2 Measurement of leakage of body seal(s) 7 7 Marking
17、7 8 Certification of compliance .7 Foreword This document (EN ISO 15848-2:2015) has been prepared by Technical Committee ISO/TC 153 “Valves” in collaboration with Technical Committee CEN/TC 69 “Industrial valves” the secretariat of which is held by AFNOR. This European Standard shall be given the st
18、atus of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2015, and conflicting national standards shall be withdrawn at the latest by December 2015. Attention is drawn to the possibility that some of the elements of this document may be the
19、 subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 15848-2:2006. EN ISO 15848 consists of the following parts, under the general title Industrial valves Measurement, test and qualification procedu
20、res for fugitive emissions: Part 1: Classification system and qualification procedures for type testing of valves Part 2: Production acceptance test of valves According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement thi
21、s European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovaki
22、a, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 15848-2:2015 has been approved by CEN as EN ISO 15848-2:2015 without any modification. 3DIN EN ISO 15848-2:2015-11EN ISO 15848-2:2015 (E)IntroductionThe aim of this part of ISO 15848 is to esta
23、blish standard practice for the evaluation of production valves, the design of which has been successfully type-tested according to ISO 15848-1.4DIN EN ISO 15848-2:2015-11 EN ISO 15848-2:2015 (E) 1 ScopeThis part of ISO 15848 specifies test procedures for the evaluation of external leakage of valve
24、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 part of ISO 15848.The production acceptance test is
25、intended for standard production valves where fugitive emissions standards are specified.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. Fo
26、r undated references, the latest edition of the referenced document (including any amendments) applies.ISO 15848-1:2015, Industrial valves Measurement, test and qualification procedures for fugitive emissions Part 1: Classification system and qualification procedures for type testing of valves3 Term
27、s and definitionsFor the purposes of this document, the terms and definitions given in ISO 15848-1 and the following apply.3.1production acceptance testtest carried out on production valves to verify conformance with the requirements of this part of ISO 158484 Preparation of test valves4.1 Valve sel
28、ectionThe sampling percentage shall be subject to an agreement between the manufacturer and the purchaser, with a minimum of one valve of the lot, and shall be selected at random from each production lot of valves per valve type, pressure class, and nominal size.4.2 PreconditioningThis part of ISO 1
29、5848 is applicable to valves, the design of which has been successfully type-tested according to ISO 15848-1. The selected valves shall have been successfully tested according to the relevant production test standards and the purchasers specifications, prior to the acceptance test specified in this
30、part of ISO 15848.The packing shall be dry before production test.5DIN EN ISO 15848-2:2015-11EN ISO 15848-2:2015 (E)4.3 Stem (or shaft) seal adjustmentCompression of stem (or shaft) seal(s) shall be initially adjusted according to the manufacturers instructions.5 Test conditions5.1 Test fluidThe tes
31、t fluid shall be helium gas with a minimum purity of 97 % by volume.5.2 Leakage measurementLeakages shall be measured by sniffing method in accordance with ISO 15848-1:2015, Annex B, and shall be expressed in ppmv.5.3 Test pressureThe test pressure shall be 6 bar (1 bar = 0,1 MPa = 105Pa; 1 MPa = 1
32、N/mm2), unless otherwise agreed by the manufacturer and the purchaser.5.4 Test temperatureThe test temperature shall be at room temperature as defined in ISO 15848-1.6 Test procedure and evaluation of test results6.1 Measurement of stem (or shaft) seal leakagesThe procedure for measuring the leakage
33、 of stem or shaft seals is as follows.a) Half open the test valve and pressurize to the level specified in 5.3. Measure the stem seal leakage using the sniffing method in accordance with ISO 15848-1:2015, Annex B.b) Then, fully open and close the pressurized test valve five times.c) Half open the te
34、st valve after the mechanical cycles and measure the stem seal leakages as in a).d) If the reading exceeds the values of the required tightness class according to Table 1, the test shall be considered as having failed. A corrective action shall be proposed and agreed with the purchaser or the lot of
35、 valves shall be rejected.Table 1 Tightness classes for stem sealsClassMeasured leakage ppmvRemarksA 50Typically achieved with bellow seals or equivalent stem (shaft) sealing system for quarter turn valvesB 100Typically achieved with PTFE based packings or elas-tomeric sealsC 200 Typically achieved
36、with flexible graphite-based packingsNOTE Measured by sniffing method as defined in ISO 15848-1:2015, Annex B.6DIN EN ISO 15848-2:2015-11 EN ISO 15848-2:2015 (E) 6.2 Measurement of leakage of body seal(s)The procedure for measuring the leakage of body seals is as follows.a) Half open the test valve
37、and pressurize to the level specified in 5.3. After the test pressure has been stabilized, detect leakage of the body seal(s) in accordance with ISO 15848-1:2015, Annex B.b) If the reading exceeds the value of the required tightness class according to Table 2, the test shall be considered as having
38、failed. A corrective action shall be proposed and agreed with the purchaser or the lot of valves shall be rejected.Table 2 Leakage from body sealsMeasured leakage ppmv50NOTE Measured by the sniffing method as defined in ISO 15848-1:2015, Annex B.7 MarkingOnly those valves which have been tested, cla
39、ssified, and qualified in accordance with ISO 15848-1, and which comply with the requirements of this part of ISO 15848 shall be marked.8 Certification of complianceIf requested by the purchaser, the manufacturer shall provide a certificate of compliance that this production acceptance test has been completed successfully.7DIN EN ISO 15848-2:2015-11EN ISO 15848-2:2015 (E)
