[www.staffempire.com]-BS EN 12266-1-2003 Industrial valves. Testing of valves. Pressure tests, test procedures and acceptance criteria. Mandatory requirements.pdf

BRITISH STANDARDBS EN 12266-1:2003 Incorporating Corrigendum No.1Industrial valves Testing of valves Part 1:Pressure tests,test procedures and acceptance criteria Mandatory requirementsThe European Standard EN 12266-1:2003 has the status of a British StandardICS 23.060.01?Licensed Copy:Institute Of Technology Tallaght,Institute of Technology,Tue Aug 22 00:18:42 BST 2006,Uncontrolled Copy,(c)BSIBS EN 12266-1:2003This British Standard was published under the authority of the Standards Policy and Strategy Committee on 2 April 2003 BSI 23 May 2003ISBN 0 580 41494 9National forewordThis British Standard is the official English language version of EN 12266-1:2003.Together with BS EN 12266-2:2002,it supersedes BS 6755-1:1986 which is withdrawn.The UK participation in its preparation was entrusted by Technical Committee PSE/7,Valves,to Subcommittee PSE/7/1,Valves Basic standards,which has the responsibility to:A list of organizations represented on this subcommittee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled“International Standards Correspondence Index”,or by using the“Search”facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract.Users are responsible for its correct application.Compliance with a British Standard does not of itself confer immunity from legal obligations.aid enquirers to understand the text;present to the responsible international/European committee any enquiries on the interpretation,or proposals for change,and keep the UK interests informed;monitor related international and European developments and promulgate them in the UK.Summary of pagesThis document comprises a front cover,an inside front cover,the EN title page,pages 2 to 15 and a back cover.The BSI copyright date displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd.No.DateComments14505 Corrigendum No.123 May 2003Addition of supersession details to national forewordLicensed Copy:Institute Of Technology Tallaght,Institute of Technology,Tue Aug 22 00:18:42 BST 2006,Uncontrolled Copy,(c)BSIEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 12266-1March 2003ICS 23.060.01English versionIndustrial valves-Testing of valves-Part 1:Pressure tests,testprocedures and acceptance criteria-Mandatory requirementsRobinetterie industrielle-Essais des appareils derobinetterie-Partie 1:Essais sous pression,procduresdessai et critre dacceptation-Prescriptions obligatoiresIndustriearmaturen-Prfung von Armaturen-Teil 1:Druckprfungen,Prfverfahren und Annahmekriterien-Verbindliche AnforderungenThis European Standard was approved by CEN on 27 December 2002.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration.Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the 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 translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria,Belgium,Czech Republic,Denmark,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre:rue de Stassart,36 B-1050 Brussels 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref.No.EN 12266-1:2003 ELicensed Copy:Institute Of Technology Tallaght,Institute of Technology,Tue Aug 22 00:18:42 BST 2006,Uncontrolled Copy,(c)BSIEN 12266-1:2003(E)2ContentspageForeword.3Introduction.41Scope.52Normative references.53Terms and definitions.54Test requirements.55Designation.6Annex A(normative)Test procedures and acceptance criteria.7A.1General requirements.7A.2Shell strength,Test P10.9A.3Shell tightness,Test P11.10A.4Seat tightness,Test P12.11Annex ZA(informative)Clauses of this European Standard addressing essential requirements or otherprovisions of EU Directives.14Bibliography.15Licensed Copy:Institute Of Technology Tallaght,Institute of Technology,Tue Aug 22 00:18:42 BST 2006,Uncontrolled Copy,(c)BSIEN 12266-1:2003(E)3ForewordThis document(EN 12266-1:2003)has been prepared by Technical Committee CEN/TC 69 Industrial valves,thesecretariat 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 orby endorsement,at the latest by September 2003,and conflicting national standards shall be withdrawn at thelatest by September 2003.This document has been prepared under a mandate given to CEN by the European Commission and the EuropeanFree Trade Association,and supports essential requirements of EU Directive(s).For relationship with EU Directive(s),see informative annex ZA,which is an integral part of this document.EN 12266 consists of two parts,which can be used separately under the general title,Industrial valves Testing ofvalves:Part 1:Pressure tests,test procedures and acceptance criteria Mandatory requirements Part 2:Tests,test procedures and acceptance criteria Supplementary requirementsPart 1 was drawn up on the basis of International Standard ISO 5208 and Part 2 contains supplementary testingrequirements for tests,test procedures and acceptance criteria of valves.Special requirements,which are specific to one product or one performance standard only,are not included in thisstandard.Details should be included in the appropriate standard.Annex A forms a normative part of this part of EN 12266.According to the CEN/CENELEC Internal Regulations,the national standards organizations of the followingcountries are bound to implement this European Standard:Austria,Belgium,Czech Republic,Denmark,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,Switzerland and the United Kingdom.Licensed Copy:Institute Of Technology Tallaght,Institute of Technology,Tue Aug 22 00:18:42 BST 2006,Uncontrolled Copy,(c)BSIEN 12266-1:2003(E)4IntroductionThe purpose of this part of EN 12266 is to establish certain basic requirements for the production pressure testing ofindustrial valves in order to ensure uniform tests and test procedures are adopted.The tests and procedures detailedmay also be used,when required,for type tests and acceptance tests.Licensed Copy:Institute Of Technology Tallaght,Institute of Technology,Tue Aug 22 00:18:42 BST 2006,Uncontrolled Copy,(c)BSIEN 12266-1:2003(E)51 ScopeThis standard specifies mandatory requirements for tests,test procedures and acceptance criteria for productiontesting of industrial valves.The specified tests may also be used as type tests or acceptance tests.When specified as a normative reference in a valve product or performance standard,this standard has to beconsidered in conjunction with the specific requirements of that valve product or performance standard.Whererequirements in a product or performance standard differ from those given in this standard,the requirements of theproduct or performance standard apply.2 Normative referencesThis European Standard incorporates by dated or undated reference,provisions from other publications.Thesenormative references are cited at the appropriate places in the text and the publications are listed hereafter.Fordated references,subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision.For undated references the latest edition of thepublication referred to applies(including amendments).EN 736-1,Valves Terminology Part 1:Definition of types of valvesEN 736-2,Valves Terminology Part 2:Definition of components of valvesEN 736-3,Valves Terminology Part 3:Definition of terms3 Terms and definitionsFor the purposes of this European Standard,EN 736-1,EN 736-2 and EN 736-3 and the following term anddefinition apply.3.1series-produceddesign of valve which is repetitively manufactured4 Test requirements4.1Every valve shall be subject to the shell strength test,reference P10,listed in Table 1,except that this testmay be carried out on a statistical sampling basis provided:a)the valve is series-produced and;b)the nominal size of the valve is less than or equal to DN 100(see A.1.7 for nominal sizes which do not have aDN designation)and;c)for valves of a nominal size greater than DN 25,the allowable pressure designation shall not exceed thevalues in Table 2 and;d)the body,bonnet or cover materials are not manufactured from cast steel or cast nickel alloy.4.2Every valve shall be subject to the shell tightness test,reference P11,listed in Table 1.4.3Every isolating and check valve shall be subject to the seat tightness test,reference P12,listed in Table 1.4.4Test procedures and acceptance criteria shall be as given in annex A.Licensed Copy:Institute Of Technology Tallaght,Institute of Technology,Tue Aug 22 00:18:42 BST 2006,Uncontrolled Copy,(c)BSIEN 12266-1:2003(E)6Table 1 Requirements for tests,test procedures and acceptance criteriaTestTitleTestreferencePurposeTest procedureand acceptancecriteriaShell strength aP10To confirm the pressure containing capabilityof the shell against internal pressuresee A.2Shell tightness aP11To confirm the leak tightness of the shellincluding the operating mechanism sealingagainst internal pressuresee A.3Seat tightnessP12To confirm the capability of the seat(s)tocomply with the specified leakage ratesee A.4 at the time of manufacture in the direction(s)for which the valve isdesignedaThe shell strength and shell tightness tests may be carried out at the same time when the test fluid used for the shell tightnesstest is a liquid.Table 2 Allowable pressure designationDNPN DN 25AllDN 32,DN 40 PN 25DN 50 PN 16 or Class 150DN 65,DN 80,DN 100 PN 105 DesignationTests in accordance with this standard shall be designated by the following elements:title of test,test reference;EN 12266-1.EXAMPLEShell strength,Test P10 EN 12266-1Licensed Copy:Institute Of Technology Tallaght,Institute of Technology,Tue Aug 22 00:18:42 BST 2006,Uncontrolled Copy,(c)BSIEN 12266-1:2003(E)7Annex A(normative)Test procedures and acceptance criteriaA.1 General requirementsA.1.1 PurposeThese general requirements shall be applied to all the test procedures detailed in this annex.Safety aspects of valve testing are not covered in this standard.The users of this standard should analyse thehazard resulting from the pressure and take proper safety precautions.A.1.2 Test equipmentThe test equipment shall be of such a design,that it does not subject the valve to externally applied loads whichmay affect the results of the test.NOTEThe 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 standard,the manufacturer shall beable to demonstrate the equivalence of such test procedures and acceptance criteria with the requirements of thisstandard.A.1.3 Measuring equipmentThe measuring equipment shall be capable of measuring the fluid pressure with an accuracy of 5%of therequired test pressure.A.1.4 Painted,coated or lined valvesValves shall not be externally painted or otherwise coated with materials capable of sealing against leakage fromexternal surfaces of the shell before the shell strength test,reference P10,and the shell tightness test,reference P11.Valves with liners,internal linings or internal coatings that form a design feature of the valve may be tested with theliner or after lining or coating.NOTEIf tests in the presence of a representative of the purchaser are specified,painted or coated valves from stock maybe retested without removal of painting or coating.A.1.5 Test fluidThe test fluid to be used,as specified in the relevant test procedures detailed in A.2.2.1,A.3.2.1 and A.4.2.1,shallbe:either a liquid(water which may contain a corrosion inhibitor,or any other suitable liquid having a viscosity notgreater than water);or a gas(air or other suitable gas).The test fluid temperature shall be between 5 C and 40 C.Licensed Copy:Institute Of Technology Tallaght,Institute of Technology,Tue Aug 22 00:18:42 BST 2006,Uncontrolled Copy,(c)BSIEN 12266-1:2003(E)8A.1.6 Allowable pressure at room temperatureThe test pressure shall be calculated based on the allowable pressure at room temperature?ps/RT.For valves forwhich the allowable pressure?ps is given only for an elevated temperature t,the allowable pressure at roomtemperature,?ps/RT,to be used to determine the test pressure shall be calculated from the following equation:p0,2min/tp0,2min/RTs/ts/RTRRpp=where:min/RT p0,2Ris the 0,2%proof strength at room temperature according to the relevant material standard;min/t p0,2Ris the 0,2%proof strength at temperature t according to the relevant material standard;s/tpis the allowable pressure at temperature t.NOTEThe term maximum allowable pressure,PS,defined in EU Directive 97/23/EC(PED)is equivalent to the termallowable pressure,ps,defined in EN 736-3.A.1.7 Equivalent DN numbersFor the purpose of calculating seat leakage rates and test duration times it is necessary to establish the equivalentDN number for those valves which are designated other than by DN.The equivalent DN numbers of valves having flanged ends,threaded ends,weld ends,capillary or compressionends shall be as given in Table A.1.Licensed Copy:Institute Of Technology Tallaght,Institute of Technology,Tue Aug 22 00:18:42 BST 2006,Uncontrolled Copy,(c)BSIEN 12266-1:2003(E)9Table A.1 Equivalent DN numbers for different types of body endsEquivalent DNnumbersFlanged,threaded orwelding endsNPSCapillary or compression endsfor copper tubeCompression ends for plastictubemmmm881010;1210;121514;14,7;15;16;1814,7;15;16;182021;2220;21;2225125;27,4;2825;27,4;28321 34;35;3832;34401 40;40,5;4240;40,550253,6;5450;53,6652 64;66,7;706380376,1;80;88,975;9010041081101255150620082501030012350144001645018500206002465026700287503080032900361 00042A.2 Shell strength,Test P10A.2.1 PurposeThe test shall confirm the pressure containing capability of the shell against internal pressure.A.2.2 Test methodA.2.2.1 Test procedureThe test fluid shall be a liquid.The obturator of isolating and control valves shall be in a partially open position.The end connections of the shell shall be blanked off and all cavities filled with th