1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 12266-1:2012Industrial valves Testing ofmetallic valvesPart 1: Pressure tests, test proceduresand acceptance criteria MandatoryrequirementsBS EN 12266-1:2012 BRITISH STANDA
2、RDNational forewordThis British Standard is the UK implementation of EN 12266-1:2012.It supersedes BS EN 12266-1:2003 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PSE/18/1, Industrial valves, steam traps, actuators andsafety devices against excessive
3、 pressure - Valves - Basic standards.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Instit
4、ution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 67642 0ICS 23.060.01Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 April 2012.Amendments issue
5、d since publicationDate Text affectedBS EN 12266-1:2012EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12266-1 April 2012 ICS 23.060.01 Supersedes EN 12266-1:2003English Version Industrial valves - Testing of metallic valves - Part 1: Pressure tests, test procedures and acceptance criteria - Ma
6、ndatory requirements Robinetterie industrielle - Essais des appareils de robinetterie mtalliques - Partie 1: Essais sous pression, procdures dessai et critres dacceptation - Prescriptions obligatoires Industriearmaturen - Prfung von Armaturen aus Metall - Teil 1: Druckprfungen, Prfverfahren und Anna
7、hmekriterien - Verbindliche Anforderungen This European Standard was approved by CEN on 25 February 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteratio
8、n. 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). A version in any other language made by
9、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, Cyprus, Czech Republic, Denmark, Estonia, F
10、inland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EU
11、ROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12266-1:2012: EBS EN 12266-1:2012EN 12266-1:2012 (E) 2 Contents Page Foreword 3Introduction . 41
12、 Scope 52 Normative references 53 Terms and definitions . 54 Test requirements 65 Designation 7Annex A (normative) Test procedures and acceptance criteria . 8A.1 General requirements 8A.2 Shell strength, test reference, P10 10A.3 Shell tightness, test reference, P11 . 12A.4 Seat tightness, test refe
13、rence P12 13Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 97/23/EC (PED) 16Bibliography 17BS EN 12266-1:2012EN 12266-1:2012 (E) 3 Foreword This document (EN 12266-1:2012) has been prepared by Technical Committee CEN/TC 69 “Industria
14、l valves”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2012, and conflicting national standards shall be withdrawn at the latest by October 2
15、012. This document supersedes EN 12266-1:2003. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive 97/23/EC (PED). For relationship with EU Directive 97/23/EC (PED), see i
16、nformative Annex ZA, which is an integral part of this document. The main changes compared to the previous edition are: a) the scope was specified and editorially revised; b) the normative references were updated; c) Clause 3 Terms and definitions was revised; d) Clause 4 Test requirements was chang
17、ed; e) A.1.6 Allowable pressure at room temperature was deleted; f) Table A.2, “Minimum test duration for shell tests“ has been updated; g) Annex ZA was revised; h) Bibliography was updated. EN 12266, Industrial valves Testing of metallic valves consists of the following parts: Part 1: Pressure test
18、s, test procedures and acceptance criteria Mandatory requirements Part 2: Tests, test procedures and acceptance criteria Supplementary requirements EN 12266-1 was drawn up on the basis of International Standard ISO 5208:1993. EN 12266-2 contains supplementary testing requirements for tests, test pro
19、cedures and acceptance criteria of valves. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
20、 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. BS EN 12266-1:2012EN 12266-1:2012 (E) 4 Introduction The purpose of this European S
21、tandard is to establish certain basic requirements for production pressure testing of industrial valves in order to ensure uniform tests and test procedures. Tests and procedures given in this European Standard may also be used, if required, for type tests and acceptance tests. Special requirements,
22、 which are specific to one product or one performance standard only, are not included in this European Standard. Details should be included in the appropriate standard. BS EN 12266-1:2012EN 12266-1:2012 (E) 5 1 Scope This European Standard specifies requirements for tests, test procedures and accept
23、ance criteria for production testing of industrial valves made of metallic materials. The specified tests may also be used as type tests or acceptance tests. Safety devices are not covered by EN 12266-1. When specified as a normative reference in a valve product or performance standard, this Europea
24、n Standard is to be considered in conjunction with given specific requirements of the valve product or performance standard. Where requirements in a product or performance standard differ from those given in this European Standard, the requirements of the product or performance standard apply. NOTE
25、For testing of industrial valves of thermoplastic materials, ISO 9393-1 and ISO 9393-2 apply. 2 Normative references The 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 appli
26、es. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 736-1:1995, Valves Terminology Part 1: Definition of types of valves EN 736-2:1997, Valves Terminology Part 2: Definition of components of valves EN 736-3:2008, Valves Terminology Part 3:
27、 Definition of terms EN 1349, Industrial process control valves 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 736-1:1995, EN 736-2:1997, EN 736-3:2008 and the following apply. 3.1 shell test test at a pressure in excess of the cold working pressure
28、(3.7) rating of a valve for the purpose of validating the soundness and strength of the valve pressure containing and retaining structures Note 1 to entry: These structures include valve-actuating mechanisms that have a direct connection to the valve internals subject to fluid test pressure within t
29、he valve proper. 3.2 test pressure internal pressure (gauge), expressed in bar 1)to which the valve under testing is subjected Note 1 to entry: Unless otherwise noted, gauge pressure is used throughout this European Standard. 3.3 test fluid pressurized liquid or gas used to test a valve 11 bar = 105
30、Pa. BS EN 12266-1:2012EN 12266-1:2012 (E) 6 3.4 test fluid temperature temperature of the test fluid, 5 C and 40 C 3.5 DN, NPS alphanumeric designation of size that is common for components used in a piping system, used for reference purposes, comprising the letters “DN or NPS” followed or preceded
31、by a dimensionless number indirectly related to the physical size of the bore or outside diameter of the end connections Note 1 to entry: The number following “DN or NPS” does not represent a measurable value and should not be used for calculation purposes except where specified in a product standar
32、d. 3.6 PN or Class alphanumeric designation for pressure-temperature rating that is common for components used in a piping system, used for reference purposes, comprising the letters “PN or Class” followed by a dimensionless number indirectly related to the pressure retaining capability as a functio
33、n of temperature of the component 3.7 cold working pressure CWP maximum fluid pressure assigned to a valve for operation at a fluid temperature of 20 C to 38 C Note 1 to entry: Valve pressure-temperature ratings are specified in product standards by reference to PN or Class designations. 3.8 double
34、block-and-bleed valve valve with two separate closure seating surfaces that, when in the closed position, block the flow from both ends when the cavity between the two seating surfaces is vented through a bleed connection between the body cavity and the outside environment 4 Test requirements Test p
35、rocedures and acceptance criteria shall be as given in Table 1 and Annex A. a) Shell strength test P10 is mandatory for every valve except when a statistical sampling is permitted. b) Shell tightness test P11 is mandatory for every valve except when a statistical sampling is accepted. c) Seat tightn
36、ess test P12 is mandatory for every isolating and check valve except when a statistical sampling is accepted. The seat tightness test for control valves shall be in accordance with EN 1349. BS EN 12266-1:2012EN 12266-1:2012 (E) 7 Table 1 Requirements for tests, test procedures and acceptance criteri
37、a Test Purpose Test procedure and acceptance criteria Title Test reference Shell strength aP10 To confirm the pressure containing capability of the shell against internal pressure see EN 12266-1:2012, A.2 Shell tightness aP11 To confirm the leak tightness of the shell including the operating mechani
38、sm sealing against internal pressure see EN 12266-1:2012, A.3 Seat tightness for valves bP12 To confirm the capability of the seat(s) to comply with the specified leakage rate: at the time of manufacture; in the direction(s) for which the valve is designed. see EN 12266-1:2012, A.4 Obturator strengt
39、h cP20 To check the pressure containing capability of the obturator see EN 12266-2:2012, A.2 aThe shell strength and shell tightness tests may be carried out at the same time. bSee Table A.3 for the type of valve. cTo check the pressure containing capability of the obturator, if valve is used as the
40、 single means of insulation between the content of an item of pressure equipment and the downstream equipment not designed to withstand the upstream pressure. 5 Designation Tests in accordance with this European Standard shall be designated by the following elements: title of test and test reference
41、; EN 12266-1. EXAMPLE Shell strength, Test P10 EN 12266-1 BS EN 12266-1:2012EN 12266-1:2012 (E) 8 Annex A (normative) Test procedures and acceptance criteria A.1 General requirements A.1.1 Purpose These general requirements shall be applied to all the test procedures detailed in this annex. Safety a
42、spects of valve testing are not covered in this European Standard. NOTE Users of this European Standard should analyse the hazard resulting from the pressure and take proper safety precautions. A.1.2 Test equipment The test equipment shall be of such a design that it does not subject the valve to ex
43、ternally applied loads which may affect the results of the test. NOTE The test equipment can apply external loads sufficient to react to the forces resulting from the test pressure. When using test equipment and procedures different to that detailed in this European Standard, the manufacturer shall
44、be able to demonstrate the equivalence of such test procedures and acceptance criteria with the requirements of this European Standard. A.1.3 Measuring equipment The measuring equipment shall be capable of measuring fluid pressure with an accuracy of 5 % of the required test pressure. A.1.4 Painted,
45、 coated or lined valves Before the shell strength test, reference P10, and the shell tightness test, reference P11, valves shall not be painted externally or otherwise coated with materials capable of sealing against leakage from external surfaces of the shell. Valves with liners, internal linings o
46、r coatings forming a design feature of the valve may be tested with the liner, after lining or coating. Attention shall be given that the liners, internal linings or coatings are not damaged by the test procedure. NOTE If tests in the presence of a representative of the purchaser are specified, pain
47、ted or coated valves from stock may be retested without removal of painting or coating. A.1.5 Test fluid The test fluid to be used shall be: either a liquid (water which may contain a corrosion inhibitor, or any other suitable liquid having a viscosity not greater than water); a gas (air or other su
48、itable gas). BS EN 12266-1:2012EN 12266-1:2012 (E) 9 Relevant detailed test procedures are specified in A.2.2.1, A.3.2.1 and A.4.2.1. The test fluid temperature shall be between 5 C and 40 C. A.1.6 Equivalent DN numbers For the purpose of calculating seat leakage rates and test duration times it is
49、necessary to establish the equivalent DN number for those valves which are designated other than by DN. The equivalent DN numbers of valves having flanged ends, threaded ends, welded ends, capillary or compression ends shall be as given in Table A.1. Table A.1 Equivalent DN numbers for different types of body ends Equivalent DN numbers Flanged, threaded or welding ends NPS Capillary or compression ends for copper tube mm Compression ends for plastic tube mm 8 8 10 10;
