1、BSI Standards PublicationBS EN ISO 14246:2014Gas cylinders Cylinder valves Manufacturing tests andexaminationsBS EN ISO 14246:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO14246:2014. It supersedes BS EN ISO 14246:2001 which is withdrawn.The UK partici
2、pation in its preparation was entrusted to TechnicalCommittee PVE/3/1, Gas containers - Valve fittings for gas containers.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 con
3、tract. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 69372 4ICS 23.020.30Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the auth
4、ority of theStandards Policy and Strategy Committee on 31 July 2014.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 14246 July 2014 ICS 23.020.30 Supersedes EN ISO 14246:2001English Version Gas cylinders - Cylinder valves - Manufacturing
5、tests and examinations (ISO 14246:2014) Bouteilles gaz - Robinets de bouteilles gaz - Essais de fabrication et contrles (ISO 14246:2014) Gasflaschen - Flaschenventile - Herstellungsprfungen und -berprfungen (ISO 14246:2014) This European Standard was approved by CEN on 14 May 2014. CEN members are b
6、ound 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 concerning such national standards may be obtained on application to the
7、 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 responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centr
8、e 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania
9、, Luxembourg, 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
10、 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 14246:2014 EBS EN ISO 14246:2014EN ISO 14246:2014 (E) 3 Foreword This document (EN ISO 14246:2014) has been prepared by Technical Committee ISO/TC 58 “Gas cylinders
11、” in collaboration with Technical Committee CEN/TC 23 “Transportable gas cylinders” the secretariat of which is held by BSI. 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 January 2015, and confl
12、icting national standards shall be withdrawn at the latest by January 2015. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This docum
13、ent supersedes EN ISO 14246:2001. 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(s). According to the CEN-CENELEC Internal Regulations, the national standards organiz
14、ations of the following countries are bound to implement this 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, Ma
15、lta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 14246:2014 has been approved by CEN as EN ISO 14246:2014 without any modification. BS EN ISO 14246:2014ISO 14246:2014(E) ISO 2014 All
16、 rights reserved iiiContents PageForeword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Cleaning . 25 Manufacturing tests and examinations. 25.1 General . 25.2 Valve test pressure . 25.3 Tests to be performed on every valve 35.4 Inspections, verifications and examin
17、ations to be performed on a sample . 35.5 Procedures to verify materials of construction and components . 4Annex A (informative) Example of test protocol on every valve 5Bibliography 6BS EN ISO 14246:2014ISO 14246:2014(E)ForewordISO (the International Organization for Standardization) is a worldwide
18、 federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that
19、committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this documen
20、t and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives,
21、 Part 2 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. 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
22、document will be in the Introduction and/or on the ISO list of patent declarations received www.iso.org/patents.Any trade name used in this document 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 ex
23、pressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT), see the following URL: Foreword - Supplementary information.The committee responsible for this document is ISO/TC 58, Gas cylinders, Subcommittee SC
24、 2, Cylinder fittings.This second edition cancels and replaces the first edition (ISO 14246:2001), which has been technically revised.The main changes from ISO 14246:2001 are the scope refers to cylinder valves, main valves for cylinder bundles and cylinder valves or main valves with integrated pres
25、sure regulators (VIPR) according to ISO 10297 only, the definitions were brought in line with the revision of ISO 10297 and ISO 10286, addition of a separate clause for the determination of the valve test pressure, modification/addition/deletion of manufacturing related definitions (batch/sample/shi
26、ft), modification of tests to be performed on every valve, modification of inspections, verifications and examinations to be performed on a sample, addition of procedures to verify materials of construction and components, deletion of revalidation tests, and modification of example of test protocol
27、on every valve.iv ISO 2014 All rights reservedBS EN ISO 14246:2014ISO 14246:2014(E)IntroductionThis International Standard covers the function of a cylinder valve as a closure (defined by the UN Model Regulations). Additional features of cylinder valves (e.g. pressure regulators, residual pressure-r
28、etaining devices, non-return devices and pressure relief devices) might be covered by other standards and/or regulations.Cylinder valves complying with this International Standard can be expected to perform satisfactorily under normal service conditions.This International Standard pays particular at
29、tention to manufacturing tests and examinations of cylinder valves designed and type tested according to ISO 10297.This standard has been written to be in conformity with the UN Model Regulations. When published it will be submitted to the UN Sub Committee of Experts on the Transport of Dangerous Go
30、ods with a request that it be included in the UN Model Regulations.Where there is any conflict between this International Standard and any applicable regulation, the regulation always takes precedence.In this International Standard the unit bar is used, due to its universal use in the field of techn
31、ical gases. It should, however, be noted that bar is not an SI unit, and that the corresponding SI unit for pressure is Pa (1 bar = 105Pa = 105N/m2).Pressure values given in this International Standard are given as gauge pressure (pressure exceeding atmospheric pressure) unless noted otherwise. ISO
32、2014 All rights reserved vBS EN ISO 14246:2014BS EN ISO 14246:2014Gas cylinders Cylinder valves Manufacturing tests and examinations1 ScopeThis International Standard describes the procedures and acceptance criteria for manufacturing testing and examination (sometimes called initial inspection and t
33、ests) of cylinder valves that have been manufactured according to type approvals.This International Standard is applicable toa) cylinder valves intended to be fitted to refillable transportable gas cylinders,b) main valves (excluding ball valves) for cylinder bundles, andc) cylinder valves or main v
34、alves with integrated pressure regulator (VIPR)designed and type tested according to ISO 10297.NOTE Where there is no risk of ambiguity, cylinder valves, main valves and VIPR are addressed with the collective term “valves” within this document.The principles of these tests and examinations can be be
35、neficially applied to cylinder valves type tested to national or International Standards other than ISO 10297.2 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 edit
36、ion cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 10297, Gas cylinders Cylinder valves Specification and type testingISO 15001, Anaesthetic and respiratory equipment Compatibility with oxygen3 Terms and definitionsFor the
37、purposes of this document, the following terms and definitions apply.3.1valve working pressurepwsettled pressure of a compressed gas at a uniform reference temperature of 15 C in a full gas cylinder for which the valve is intendedNote 1 to entry: This definition does not apply to liquefied (e.g. car
38、bon dioxide) or dissolved (e.g. acetylene) gases.SOURCE: ISO 10297:2006, 3.1, modified - Terminology has changed.3.2valve test pressurepvtminimum pressure applied to a valve through a gas during testingSOURCE: ISO 10297:2006, 3.2, modified - Terminology has changed.INTERNATIONAL STANDARD ISO 14246:2
39、014(E) ISO 2014 All rights reserved 1BS EN ISO 14246:2014ISO 14246:2014(E)3.3external leak tightnessleak tightness to atmosphere (leakage in and/or leakage out) when the valve is openSOURCE: ISO 10297:2006, 3.3, modified - Reference to Figure 1 has been deleted.3.4internal leak tightnessleak tightne
40、ss across the valve seat (leakage in and/or leakage out) when the valve is closedSOURCE: ISO 10297:2006, 3.43.5batchquantity of valves of the same type tested design and production order, which is produced as a controlled number in a specified time period3.6samplequantity of valves selected from a b
41、atch (3.5) according to a recognized sampling procedureNote 1 to entry: The ISO 2859 series specifies sampling procedures for inspection.4 CleaningThe valves shall be supplied clean and dry to meet the requirements of the intended service. In addition, valves for oxygen and other oxidizing gases (se
42、e ISO 10156) shall be supplied cleaned of oil, grease and particulate matter to meet the requirements of ISO 15001 or any relevant standard or regulation, except for non-medical applications where the maximum particle size shall be less than 200 m. This shall be ensured by the cleaning process.5 Man
43、ufacturing tests and examinations5.1 GeneralManufacturing tests and examinations shall include tests to be performed on every valve, inspections, verifications and examinations to be performed on a sample, and procedures to verify materials of construction and components.Test results and examination
44、s shall be recorded.5.2 Valve test pressurea) For compressed gases:ppvt w=12, b) For liquefied gases, e.g. carbon dioxide, and dissolved gases, e.g. acetylene, pvtshall be at least equal to the minimum test pressure quoted in the relevant transport regulation for that gas or gas group.Where the tran
45、sport regulation does not specify a minimum test pressure, the test pressure marked on the cylinder for which the valve is intended shall be used.2 ISO 2014 All rights reservedBS EN ISO 14246:2014ISO 14246:2014(E)5.3 Tests to be performed on every valveAll valves shall be subjected to both internal
46、leak tightness and external leak tightness testing prior to dispatch.For internal leak tightness the valve shall be pressurized from the valve inlet gas passage. For external leak tightness the valve in open position shall be pressurized from the valve inlet gas passage with the valve outlet connect
47、ion sealed or pressurized from the valve outlet connection with the valve inlet connection sealed. The external leak tightness of valves fitted with accessories which form the pressure envelope, e.g. pressure relief devices and pressure gauges shall be determined with these accessories in place.In a
48、ddition, the presence of a through passage shall be verified.Testing shall be conducted at pvtor for valves equipped with pressure activated pressure relief devices at 0,8 times the lowest value of the range of the set pressure of the pressure relief device or as per the applicable national regulati
49、on and/or standard.Leak tightness tests shall be performed at ambient temperature (usually between 15 C and 30 C). Valves shall be closed with the closing torque specified by the manufacturer but not exceeding the endurance torque at start (Te,start) as used during type testing in accordance with ISO 10297. The internal leakage rate shall not exceed 6 cm3/h. The total external leakage (typically comprising that from the external valve sealing system plus e.g. PRD, RPV, pressure indicating devices and pressure regulating
