1、Refrigerating systems and heat pumps - Qualification of tightness of components and joints (ISO 14903:2017)BS EN ISO 14903:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 14903 August 2017 ICS 27.080; 27.20
2、0 Supersedes EN 16084:2011English Version Refrigerating systems and heat pumps - Qualification of tightness of components and joints (ISO 14903:2017) Systmes de rfrigration et pompes chaleur - Qualification de ltanchit des composants et des joints (ISO 14903:2017) Klteanlagen und Wrmepumpen - Qualif
3、izierung der Dichtheit der Bauteile und Verbindungen (ISO 14903:2017) This European Standard was approved by CEN on 10 June 2017. 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 standa
4、rd without any alteration. 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
5、 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 same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Repub
6、lic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. E
7、UROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 14903:201
8、7 ENational forewordThis British Standard is the UK implementation of EN ISO 14903:2017. It is identical to ISO 14903:2017. It supersedes BS ISO 14903:2012, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee RHE/18, Refrigeration safety.A list of organiza
9、tions 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 2017 Published by BSI Standards Limited 2017IS
10、BN 978 0 580 93532 9ICS 27.200; 27.080Compliance 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 31 August 2017.Amendments/corrigenda issued since publicationDate Text aff
11、ectedBRITISH STANDARDBS EN ISO 14903:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 14903 August 2017 ICS 27.080; 27.200 Supersedes EN 16084:2011English Version Refrigerating systems and heat pumps - Qualification of tightness of components and joints (ISO 14903:2017) Systmes de rfrigr
12、ation et pompes chaleur - Qualification de ltanchit des composants et des joints (ISO 14903:2017) Klteanlagen und Wrmepumpen - Qualifizierung der Dichtheit der Bauteile und Verbindungen (ISO 14903:2017) This European Standard was approved by CEN on 10 June 2017. CEN members are bound to comply with
13、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-CENELEC Managem
14、ent 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 same statu
15、s 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, Luxembourg, Malta,
16、 Netherlands, Norway, Poland, Portugal, Romania, Serbia, 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 20
17、17 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 14903:2017 EBS EN ISO 14903:2017EN ISO 14903:2017 (E) 3 European foreword This document (EN ISO 14903:2017) has been prepared by Technical Committee ISO/TC 86 “Refrigeration an
18、d air-conditioning” in collaboration with Technical Committee CEN/TC 182 “Refrigerating systems, safety and environmental requirements” the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by e
19、ndorsement, at the latest by February 2018 and conflicting national standards shall be withdrawn at the latest by February 2018. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any
20、 or all such patent rights. This document supersedes EN 16084:2011. 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,
21、Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement
22、 notice The text of ISO 14903:2017 has been approved by CEN as EN ISO 14903:2017 without any modification. ISO 14903:2017(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 24 Symbols 35 Test requirements . 36 Requirements for hermetically sealed systems . 87 Test procedures .
23、 87.1 General . 87.2 Sampling . 87.3 Test temperature . 87.4 Tightness test . 87.4.1 General 87.4.2 Tightness level control 97.5 Requirements for joints 117.5.1 Test samples117.5.2 Torque 117.5.3 Reusable joint 127.5.4 Requirements for hermetically sealed joints .127.6 Pressure-temperature vibration
24、 tests (PTV) . 127.6.1 General. 127.6.2 Samples . 127.6.3 Test method . 127.6.4 Method 1: Combined pressure-temperature cycle test with integrated vibration test 137.6.5 Method 2: Combined pressure-temperature cycle test with a separate vibration test 157.7 Operation simulation 207.8 Freezing test .
25、 207.9 Additional pressure test for hermetically-sealed joints .217.10 Vacuum test . 217.11 Compatibility screening test 227.11.1 General. 227.11.2 Test fluids 227.11.3 Test specimens227.11.4 Test setup parameters 227.11.5 Test procedure 237.11.6 Pass/fail criteria for sealing elements 237.12 Fatigu
26、e test for hermetically sealed joints . 248 Test report 259 Information to the user 25Annex A (informative) Equivalent tightness control levels 26Annex B (normative) Test arrangements .32Bibliography .34 ISO 2017 All rights reserved iiiContents PageBS EN ISO 14903:2017ISO 14903:2017(E)Foreword iv1 S
27、cope . 12 Normative references 13 Terms and definitions . 24 Symbols 35 Test requirements . 36 Requirements for hermetically sealed systems . 87 Test procedures . 87.1 General . 87.2 Sampling . 87.3 Test temperature . 87.4 Tightness test . 87.4.1 General 87.4.2 Tightness level control 97.5 Requireme
28、nts for joints 117.5.1 Test samples117.5.2 Torque 117.5.3 Reusable joint 127.5.4 Requirements for hermetically sealed joints .127.6 Pressure-temperature vibration tests (PTV) . 127.6.1 General. 127.6.2 Samples . 127.6.3 Test method . 127.6.4 Method 1: Combined pressure-temperature cycle test with in
29、tegrated vibration test 137.6.5 Method 2: Combined pressure-temperature cycle test with a separate vibration test 157.7 Operation simulation 207.8 Freezing test . 207.9 Additional pressure test for hermetically-sealed joints .217.10 Vacuum test . 217.11 Compatibility screening test 227.11.1 General.
30、 227.11.2 Test fluids 227.11.3 Test specimens227.11.4 Test setup parameters 227.11.5 Test procedure 237.11.6 Pass/fail criteria for sealing elements 237.12 Fatigue test for hermetically sealed joints . 248 Test report 259 Information to the user 25Annex A (informative) Equivalent tightness control l
31、evels 26Annex B (normative) Test arrangements .32Bibliography .34 ISO 2017 All rights reserved iiiContents PageBS EN ISO 14903:2017ISO 14903:2017(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of
32、 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 committee. International organizations, governmental and non-governmental
33、, 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 document and those intended for its further maintenance are described in the ISO
34、/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, Part 2 (see www .iso .org/ directives).Attention is drawn to the possibi
35、lity 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 document will be in the Introduction and/or on the ISO list of p
36、atent declarations received (see 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 voluntary nature of standards, the meaning of ISO specific terms and expressions related to
37、 conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .html.This document was prepared by the European Committee for Standardization (CEN) Techn
38、ical Committee CEN/TC 182, Refrigerating systems, safety and environmental requirements, in collaboration with ISO Technical Committee TC 86, Refrigeration and air-conditioning, Subcommittee SC 1, Safety and environmental requirements for refrigerating systems, in accordance with the Agreement on te
39、chnical cooperation between ISO and CEN (Vienna Agreement).This second edition cancels and replaces the first edition (ISO 14903:2012), which has been technically revised.iv ISO 2017 All rights reservedBS EN ISO 14903:2017ISO 14903:2017(E)ForewordISO (the International Organization for Standardizati
40、on) is a worldwide 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 re
41、presented on that 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 de
42、velop 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 the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the I
43、SO/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. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified dur
44、ing 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 document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the
45、voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword
46、 .html.This document was prepared by the European Committee for Standardization (CEN) Technical Committee CEN/TC 182, Refrigerating systems, safety and environmental requirements, in collaboration with ISO Technical Committee TC 86, Refrigeration and air-conditioning, Subcommittee SC 1, Safety and e
47、nvironmental requirements for refrigerating systems, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).This second edition cancels and replaces the first edition (ISO 14903:2012), which has been technically revised.iv ISO 2017 All rights reserved INTERN
48、ATIONAL STANDARD ISO 14903:2017(E)Refrigerating systems and heat pumps Qualification of tightness of components and joints1 ScopeThis document provides the qualification procedure for type approval of the tightness of hermetically sealed and closed components, joints and parts used in refrigerating
49、systems and heat pumps as described in relevant parts of ISO 5149. The sealed and closed components, joints and parts concerned are, in particular, fittings, bursting discs, flanged or fitted assemblies. The tightness of flexible piping made from non-metallic materials is dealt with in ISO 13971. Metal flexible piping are covered by this document.The requirements contained in this document are applicable to joints of maximum DN 50 and components of internal volume of maximum 5 l and maximum weight of 50 kg.This document is intended to
