EUROPEANSTANDARD NORMEEUROPEENNE EUROPAISCHENORM
EN12266-1
April 2012
ICS 23.060.01
Supersedes EN12266-1:2003
English Version
Industrial valves-Testing of metallicvalves-Part1:Pressure tests,testprocedures andacceptancecriteria-Mandatory
requirements
Robinetterie industrille -Essais des apparels de robinetterie metalliques - Partie 1: Essais sous pression, procedures d'essai et criteres d'acceptation - Prescriptions
Industriearmaturen - Prufung von Armaturen aus Metall ,
Teil 1: Druckprifungen, Profverfahren und Annahmekriterien - Verbindliche Anforderungen
obligatoires
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 alteration. Up-to-date lists and bibliographical references conceming 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 translation
under the responsiblity 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
Finland, France, Gemany, Greece, Hungary, Iceland, Ireland, italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Noway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
cen
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITE EUROPEEN DE NORMALISATION EUROPAISCHES KOMITEE FUR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
2012CEN All rights of exploitation in any form and by any means reserved
Ref. No. EN 12266-1:2012: E
worldwide for CEN national Members. EN12266-1:2012 (E)
Contents
Page
Foreword. Introduction 1 Scope. 2
.3 4 .5 .5 .5 ...6
Normativereferences
3 Termsanddefinitions 4
Test requirements. Designation..
5 Annex A (normative) Test procedures and acceptance criteria.... A.1 General requirements.....
8 .8
A.2 Shell strength, test reference, P1o.... A.3 Shell tightness, test reference, P11.... A.4 Seattightness,testreferenceP12 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements
....10 ..12 ..13
of EU Directive 97/23/EC (PED)
16 17
Bibliography
2 EN 12266-1:2012 (E)
Foreword This document (EN 12266-1:2012) has been prepared by Technical Committee CEN/TC 69"Industrial 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 byOctober2012 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 informative 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 changed; 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, EN12266,Industrialvalves—Testingofmetallicvalves consists of thefollowingparts Part1:Pressuretests,test proceduresandacceptancecriteria-Mandatoryrequirements Part2:Tests,testproceduresandacceptancecriteria-Supplementaryrequirements EN12266-1 was drawn up on the basis of Intemational Standard ISO5208:1993.EN12266-2 contains supplementary testing requirements for tests, test procedures 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, 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.
3 EN12266-1:2012 (E)
Introduction The purpose of this European Standard 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, 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.
4 EN12266-1:2012 (E)
Scope
1
This European Standard specifies requirements for tests, test procedures and acceptance 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 European 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 For testing of industrial valves of themoplastic materials, ISO 9393-1 and ISO 9393-2 apply.
2Normativereferences 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 applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN736-1:1995,Valves-Terminology—Part1:Definitionoftypesofvalves EN736-2:1997,Valves—Terminology—Part2:Definition ofcomponentsofvalves EN736-3:2008,Valves—Terminology—Part3:Definition of terms EN1349,Industrialprocesscontrofvalves
3 Termsand definitions For the purposes. of this document, the tems and definitions given in EN736-1:1995, 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 (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 intemals subject to fluid test pressure within the valve proper. 3.2 testpressure 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 Pa.
5 EN12266-1:2012 (E)
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 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 standard. 3.6 PN orClass 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 function 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 block-and-bleedvalve 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
4Test requirements Test procedures 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 everyvalve except when a statistical sampling is accepted c) Seat tightness 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.
6 EN 12266-1:2012 (E)
Table1-Requlrements fortests, test procedures and acceptance criteria Test
Purpose
Testprocedure and acceptance
criteria
Title Shell strength a P10
Test reference
To confirm the pressure containing capability of the shell against internal pressure To confirm the leak tightness of the sheli including the operating mechanism sealing EN 12266-1:2012,
see
EN 12266-1:2012,
A.2 see A.3 see
Shell tightness a P11
against internal pressure To confirm the capability of the seat(s) to comply with the specified leakage rate:
Seat tightness P12 for valives b
EN 12266-1:2012,
A.4
at the time of manufacture; in the direction(s) for which the valve is designed.
-
Obturator strength c
P20
To check the pressure containing capability of the obturator
see
EN12266-2:2012,
A.2
a The shell strength and shell tightress tests may be carried out at the same time b See Table A3 for the type of valve. c
To check the pressure containing capability of the obturator, if valve is used as the 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; EN 12266-1.
EXAMPLE Shell strength, Test P10 - EN 12266-1
7 EN12266-1:2012 (E)
Annex A (normative)
Testproceduresandacceptancecriteria
A.1 General requirements A.1.1 Purpose These general requirements shall be applied to all the test procedures detailed in this annex. Safety aspects 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 externally applied ioads 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 be ableto demonstratethe equivalenceof suchtestprocedures andacceptance criteria withtherequirements of this European Standard. A.1.3Measuringequipment The measuring equipment shall be capable of measuring fluid pressure with an accuracy of ± 5 % of the required testpressure. A.1.4 Painted, coated or lined valves Before the shell strength test, reference P1o, 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 or coatings forming a design feature of the valve may be tested with the liner, after lining or coating. Attention shali 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 specifed, painted or coated valves from stock may be retested without removal of painting orcoating 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 suitable gas).
8