1、BSI Standards PublicationBS EN ISO 15848-1:2015Industrial valves Measurement, test andqualification procedures forfugitive emissionsPart 1: Classification system andqualification procedures for type testing ofvalvesBS EN ISO 15848-1:2015 BRITISH STANDARDNational forewordThis British Standard is the
2、UK implementation of EN ISO 15848-1:2015. It supersedes BS EN ISO 15848-1:2006 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee PSE/18/1, Industrial valves, steam traps, actuators and safety devices against excessive pressure - Valves - Basic standards.
3、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 Standa
4、rds Limited 2015ISBN 978 0 580 82087 8 ICS 23.060.01 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 30 June 2015.Amendments/corrigenda issued since publicationD
5、ate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 15848-1 June 2015 ICS 23.060.01 Supersedes EN ISO 15848-1:2006English Version Industrial valves - Measurement, test and qualification procedures for fugitive emissions - Part 1: Classification system and qualificatio
6、n procedures for type testing of valves (ISO 15848-1:2015) Robinetterie industrielle - Mesurage, essais et modes opratoires de qualification pour missions fugitives - Partie 1: Systme de classification et modes opratoires de qualification pour les essais de type des appareils de robinetterie (ISO 15
7、848-1:2015) Industriearmaturen - Mess-, Prf- und Qualifikationsverfahren fr flchtige Emissionen - Teil 1: Klassifizierungssystem und Qualifikationsverfahren fr die Bauartprfung von Armaturen (ISO 15848-1:2015) This European Standard was approved by CEN on 7 February 2015. CEN members are bound to co
8、mply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of 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-CENEL
9、EC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). 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
10、same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembou
11、rg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
12、2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 15848-1:2015 EBS EN ISO 15848-1:2015EN ISO 15848-1:2015 (E) 3 Foreword This document (EN ISO 15848-1:2015) has been prepared by Technical Committee ISO/TC 153 “Valves” incoll
13、aboration with Technical Committee CEN/TC 69 “Industrial valves” the secretariat of which is held byAFNOR. This European Standard shall be given the status of a national standard, either by publication of an identicaltext or by endorsement, at the latest by December 2015, and conflicting national st
14、andards shall be withdrawnat the latest by December 2015. Attention is drawn to the possibility that some of the elements of this document may be the subject of patentrights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN I
15、SO 15848-1:2006. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, CzechRepublic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedon
16、ia, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 15848-1:2015 has been approved by CEN a
17、s EN ISO 15848-1:2015 without any modification. BS EN ISO 15848-1:2015ISO 15848-1:2015(E)Foreword ivIntroduction vi1 Scope . 12 Normative references 13 Terms and definitions . 14 Symbols and abbreviations . 35 Type test 45.1 Test conditions 45.1.1 Preparation of a valve to be tested . 45.1.2 Test fl
18、uid 45.1.3 Test temperature . 45.1.4 Measurement of test valve temperature 45.1.5 Leakage measurement 75.2 Test procedures 85.2.1 Safety rules 85.2.2 Test equipment 85.2.3 Stem (or shaft) seal adjustment (SSA) 85.2.4 Test description 96 Performance classes 116.1 Classification criteria 116.2 Tightne
19、ss classes 116.2.1 Definition . 116.2.2 Helium as test fluid .126.2.3 Methane as test fluid .126.2.4 Correlations . 126.3 Endurance classes . 126.3.1 Mechanical-cycle classes for isolating valves .126.3.2 Mechanical-cycle classes for control valves.146.4 Temperature classes 156.5 Examples of class d
20、esignation 166.6 Marking 167 Reporting .168 Extension of qualification to untested valves 17Annex A (normative) Total leak rate measurement 19Annex B (normative) Leak measurement using the sniffing method .32Annex C (informative) Leak rate conversion (helium) .41Bibliography .43 ISO 2015 All rights
21、reserved iiiContents PageBS EN ISO 15848-1:2015ISO 15848-1:2015(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 c
22、ommittees. 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 t
23、he 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
24、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 www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights.
25、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 www.iso.org/patents).Any trade name used in this doc
26、ument 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 Trad
27、e (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 15848-1:2006) which has been technically
28、revised. The main changes are the following: leak rate at the stem seal (Table 1) is expressed in mbarls1per mm stem diameter; flushing method is replaced by accumulation or suck through method to measure leak rate from stem seal with Helium (Annex A); leakage is expressed in ppmv; leakage with meth
29、ane is measured by sniffing; for tightness Class AH, leak rate 1,78107mbarls1mm1(105mgs1m1); the appropriate leak rate is given for Classes BH and CH; addition of Table 3 which gives tightness classes for stem (or shaft) seals with methane; there is no correlation intended between the tightness clas
30、ses when the test fluid is helium (Classes AH, BH, CH) and when the test fluid is methane (Classes AM, BM, CM); modification of the number of mechanical cycles for isolating valves; addition of Table 4; addition of Figures 3, 4, and 5; addition of type leak (A.1.3.4, B.1.4.2, B.1.6.1); modification
31、of Figure B.2; modification of B.1.6.1 on calibration procedures; deletion of Figure B.3;iv ISO 2015 All rights reservedBS EN ISO 15848-1:2015ISO 15848-1:2015(E) addition of Table C.1 and modification of Table C.2.ISO 15848 consists of the following parts, under the general title Industrial valves M
32、easurement, 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 ISO 2015 All rights reserved vBS EN ISO 15848-1:2015ISO 15848-1:2015(E)IntroductionThe objective of
33、 this part of ISO 15848 is to enable classification of performance of different designs and constructions of valves to reduce fugitive emissions.This part of ISO 15848 defines type test for evaluation and qualification of valves where fugitive emissions standards are specified.The procedures of this
34、 part of ISO 15848 can only be used with the application of necessary precautions for testing with flammable or inert gas at temperature and under pressure.vi ISO 2015 All rights reservedBS EN ISO 15848-1:2015INTERNATIONAL STANDARD ISO 15848-1:2015(E)Industrial valves Measurement, test and qualifica
35、tion procedures for fugitive emissions Part 1: Classification system and qualification procedures for type testing of valves1 ScopeThis part of ISO 15848 specifies testing procedures for evaluation of external leakage of valve stem seals (or shaft) and body joints of isolating valves and control val
36、ves intended for application in volatile air pollutants and hazardous fluids. End connection joints, vacuum application, effects of corrosion, and radiation are excluded from this part of ISO 15848.This part of ISO 15848 concerns classification system and qualification procedures for type testing of
37、 valves.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. For undated references, the latest edition of the referenced document (including an
38、y amendments) applies.ISO 5208, Industrial valves Pressure testing of metallic valvesEN 13185:2001, Non-destructive testing Leak testing Tracer gas method3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1body sealsany seal in pressure containing p
39、art except stem (or shaft) seals3.2Classconvenient round number used to designate pressure-temperature ratingsNote 1 to entry: It is designated by the word “Class” followed by the appropriate reference number from the following series: Class 125, Class 150, Class 250, Class 300, Class 600, Class 900
40、, Class 1 500, Class 2 500.3.3concentrationratio of test fluid volume to the gas mixture volume measured at the leak source(s) of the test valveNote 1 to entry: The concentration is expressed in ppmv1).1) Parts per million volume is a unit deprecated by ISO. 1 ppmv = 1 ml/m3= 1 cm3/m3. ISO 2015 All
41、rights reserved 1BS EN ISO 15848-1:2015ISO 15848-1:2015(E)3.4control valvepower operated device which changes the fluid flow rate in a process control system and which consists of a valve connected to an actuator that is capable of changing the position of a closure member in the valve in response t
42、o a signal from the controlling system3.5fugitive emissionchemical or mixture of chemicals, in any physical form, which represents an unanticipated or spurious leak from equipment on an industrial site3.6leakageloss of the test fluid through the stem (or shaft) seal or body seal(s) of a test valve u
43、nder the specified test conditions and which is expressed as a concentration or a leak rate3.7leak ratemass flow rate of the test fluid, expressed in mgs1per millimetre of stem diameter through stem seal system or volumic flow rate of the test fluid, expressed in mbarls1per millimetre of stem diamet
44、er through stem seal system3.8local leakagemeasurement of the test fluid leakage using a probe at the leak source point3.9mechanical cycle of control valvesfor linear/rotary control valves, test cycles performed at 50 % of stroke/angle with an amplitude of 10 % of full stroke/angle3.10mechanical cyc
45、le of isolating valvesmotion of a valve obturator moving from fully closed position to fully opened position, and returning to fully closed position3.11nominal sizeDNalphanumeric designation of size for components of a pipework system, which is used for reference purposes, comprising the letters DN
46、followed by a dimensionless whole number which is indirectly related to physical size, in millimetres, of the bore or outside diameter of the end connectionsNote 1 to entry: The nominal diameter is designated by the letters DN followed by a number from the following series: 10, 15, 20, 25, 32, 40, 5
47、0, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400, etc.Note 2 to entry: The number following the letters DN does not represent a measurable value and should not be used for calculation purposes except where specified in the relevant standard.Note 3 to entry: Adapted from ISO 6708:1995, definition 2.
48、1.3.12nominal pressurePNnumerical designation relating to pressure, which is a convenient rounded number for reference purposes, comprising the letters PN followed by the appropriate reference numberNote 1 to entry: All equipment of the same nominal size (DN) designated by the same PN number have co
49、mpatible mating dimensions.Note 2 to entry: The maximum allowable working pressure depends upon materials, design, and working temperatures and is selected from the pressure/temperature rating tables in the appropriate standards.2 ISO 2015 All rights reservedBS EN ISO 15848-1:2015ISO 15848-1:2015(E)Note 3 to entry: The nominal pressure is designated by the letters PN followed by the appropriate reference number from the following series: 2,5, 6, 10, 16, 20, 25, 40, 50, etc.Note 4 to entry: Adapted
