1、BRITISH STANDARD Gas cylinders Parallel threads for connection of valves i- i gas Cylinders Part 2: Gauge inspection The European Standard EN IS0 15245-2:2001 has the status ofa British Standard ICs 21.040.30; 23.020.30 to BS EN IS0 15245-212001 Incorporating Corrigendum No. I Wk present to the resp
2、onsible 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. - A list of organizations represented on this subcommittee can be obtained
3、 on request to its secretary. Cr oss-r e fer enc e s The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find”
4、 facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal o
5、bligations. 11 March 2002 Incorporating Annex ZA Summary of pages This document comprises a front cover, an inside front cover, the EN IS0 title page, EN IS0 foreword page, IS0 title page, pages ii to iv, pages 1 to 7, the Annex ZA page, an inside back cover and a back cover. The BSI copyright date
6、displayed in this document indicates when the document was last issued. This British Standard, having been prepared under the direction Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 12 November 2001 Engineering O BSI 11 Marc
7、h 2002 ISBN O 580 38048 3 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN IS0 15245-2 October 2001 ICs 23.020.30 English version Gas cylinders - Parallel threads for connection of valves to gas cylinders - Part 2: Gauge inspection (IS0 15245-2:2001) Bouteilles gaz - Filetages parallles pour le
8、raccordement des robinets sur les bouteilles gaz - Partie 2: Contrle par calibre (IS0 15245-2:2001) Ortsbewegliche Gasflaschen - Zylindrische Gewinde zum Anschluss von Ventilen an Gasflaschen -Teil 2: Prflehren (IS0 15245-2:2001) This European Standard was approved by CEN on 10 October 2001 CEN memb
9、ers are bound to comply with the CENKENELEC 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 applicatio
10、n 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 translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same s
11、tatus as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STAN
12、DARDIZATION EUROPISCHES KOMITEE FR NORMUNG COMIT EUROPEN DE NORMALISATION Management Centre: rue de Stassart, 36 B-1050 Brussels O 2001 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN IS0 15245-2:2001 E EN IS0 15245-22001 I CORRECT
13、ED 2002-01-02 I Foreword The text of the International Standard from Technical Committee ISO/TC 58 “Gas cylinders“ has been taken over as a European Standard by Technical Committee CEN/TC 23 “Transportable gas cylinders“, the secretariat of which is held by BSI. This European Standard shall be given
14、 the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2002, and conflicting national standards shall be withdrawn at the latest by April 2002. According to the CENKENELEC Internal Regulations, the national standards organizations of
15、the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of th
16、e International Standard IS0 15245-2:2001 has been approved by CEN as a European Standard without any modifications. NOTE Normative references to International Standards are listed in annex ZA (normative). EN IS0 15245-2:2001 INTERNATIONAL STANDARD IS0 15245-2 First edition 2001-10-15 Gas cylinders
17、- Parallel threads for connection of valves to gas cylinders - Part 2: Gauge inspection Boufeilles gaz - Filefages parallles pour le raccordemenf des robinefs sur les boufeilles gaz - Partie 2: Confrle par calibre Reference number IS0 15245-2:2001 (E) EN IS0 15245-22001 II EN IS0 15245-22001 Content
18、s Page Foreword . iv 1 2 3 4 4.1 4.2 4.3 4.4 5 6 7 7.1 7.2 8 8.1 8.2 9 Scope 1 Normative references 1 Terms and definitions 1 Requirements . 2 Materials 2 Thread profile . 2 Thread rotation . 2 Pitch 2 Gauge dimensions . 3 Inspection gauges . 3 Use of inspection gauges . 5 Plain gauges . 5 Accept or
19、 reject criteria using plug gauges 5 Verification of inspection gauges 6 General 6 Plug gauges 6 Identification . 6 Bibliography 7 . 111 EN IS0 15245-22001 Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). Th
20、e work of preparing International Standards is normally carried out through IS0 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-gov
21、ernmental, in liaison with ISO, also take part in the work. IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISOAEC Directives, Part 3. D
22、raft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this pa
23、rt of IS0 15245 may be the subject of patent rights. IS0 shall not be held responsible for identifying any or all such patent rights. International Standard IS0 15245-2 was prepared by Technical Committee ISO/TC 58, Gas cylinders, Subcommittee SC 2, Cylinder fiffings. IS0 15245 consists of the follo
24、wing parts, under the general title Gas cylinders - Parallel fhreads for connecfion of valves fo gas cylinders: - Par 1: Specificafion - Par 2: Gauge inspecfion iv EN IS0 15245-22001 Gas cylinders - Parallel threads for connection of valves to gas cylinders - Part 2: Gauge inspection 1 Scope This pa
25、rt of IS0 15245 specifies types, dimensions and principles of use of gauges to be used in conjunction with the sealing systems of the parallel threads specified in IS0 15245-1. The threads themselves are gauged using GO and NOT GO gauges as described in IS0 Recommendation 1502 2 Normative references
26、 The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of IS0 15245. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of
27、IS0 15245 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of IS0 and IEC maintain registers of currently valid Internationa
28、l Standards. IS0 68-1, IS0 general purpose screw fhreads - Basic profile - Par 1: Mefric screw fhreads IS0 724, IS0 general-purpose mefric screw fhreads - Basic dimensions IS0 15245-1, Gas cylinders - Parallel fhreads for connecfion of valves fo gas cylinders - Par 1: Specificafion 3 Terms and defin
29、itions General definitions for parallel thread gauging are given in IS0 1502. For the purposes of this part of IS0 15245, the following terms and definitions apply. 3.1 GO and NOT GO plain plug gauges 3.1 .I GO gauge gauge designed to advance into or over a component in order to witness that the com
30、ponent is within its correct dimension and tolerance band NOTE Failure to advance into or over the component is reason for rejection 1 EN IS0 15245-22001 3.1.2 NOT GO gauge gauge designed not to advance into or over a component if the component is outside its correct dimension and tolerance band NOT
31、E 1 If the gauge does advance into or over the component this is reason for rejection. NOTE 2 Both GO and NOT GO gauges are used to assess the conformity of the component. 3.2 recess depth plug gauge GO and NOT GO plain plug gauge used for checking the depth of the sealing recess See Figure 1 3.3 re
32、cess diameter plug gauge plain plug gauge used for checking the diameter of the sealing recess See Figure 2. 3.4 thread relief plug gauge GO and NOT GO plain plug gauge used for checking the dimensions of the thread relief See Figure 3. 4 Requirements 4.1 Materials All gauges shall be manufactured f
33、rom material of suitable strength, stability and hardness. 4.2 Thread profile The thread profile shall be in accordance with the basic profile of metric screw threads (see IS0 68-1) with a 60“ angle. The form and thread height measurements are perpendicular to the axis of the thread. 4.3 Thread rota
34、tion The thread shall be a right hand thread such that it moves away from an observer when rotated clockwise. 4.4 Pitch The pitches of the threads are as follows: - M18: 1,5 mm (see IS0 724); - M25: 2 mm (see IS0 724); - M30: 2 mm (see IS0 724). 2 EN IS0 15245-22001 Thread size MI8 x 1,5 5 Gauge dim
35、ensions Dimensions K B F O O 0,05 0,014 f 0,Ol 23,5 23 0,4 The dimensional requirements shown in Tables 1 to 3 apply to the gauges shown in Figures 1 to 3 respectively. All dimensions are given in millimetres. Unspecified dimensions shall be chosen by the manufacturer of the gauges. 6 Inspection gau
36、ges Three typical plain plug gauges are shown in Figures 1 to 3 and their dimensions and tolerances in Tables 1 to 3. B 11 I Figure 1 - Recess depth plug gauge (gauge No. 1) Table 1 - Dimensions of recess depth plug gauge 3 EN IS0 15245-22001 B 0,013 0,007 B F K f 0,03 f 0,Ol I I t Figure 2 - Recess
37、 diameter plug gauge (gauge No. 2) Table 2 - Dimensions of recess diameter plug gauge MI8 x 1,5 M25 x 2 Thread size 23,83 13 0,97 32,53 23 1,43 I Dimensions I M30 x 2 I 37,53 I 23 I 1,43 Key 1 NOTGO 2 GO B Figure 3 - Thread relief plug gauge (gauge No. 3) 4 EN IS0 15245-22001 Thread size MI8 x 1,5 M
38、25 x 2,O M30 x 2,O Table 3 - Dimensions of thread relief plug gauges Dimensions F B C H E O 0,021 O O 0,05 0,012 0,009 0,025 f 0,03 23,5 18,33 18,63 6 1,5 32,l 25,33 25,63 7 2,16 37,l 30,33 30,63 83 2,16 7 Use of inspection gauges 7.1 Plain gauges Plain gauges shall be installed in position within t
39、he areas to be gauged. Undue force shall not be used. 7.2 Accept or reject criteria using plug gauges The acceptability to gauge is determined by the position of the plane at the mouth of the cylinder neck relative to the test surfaces of the gauge. The dimension shall be considered acceptable to th
40、e gauge if this plane is flush with or falls between the test surfaces of the gauge when the gauge is fitted to the recess (see Figure 4). a Test surfaces Reference plane of the cylinder Figure 4 - Use of plug gauge 5 EN IS0 15245-22001 8 Verification of inspection gauges 8.1 General During use, ins
41、pection gauges will wear and can be damaged. The user shall ensure that the gauges are examined regularly in order to verify that they remain within the specified dimensions. Frequency of checks required will depend upon usage and shall be the responsibility of the user. 8.2 Plug gauges Verification
42、 of inspection plug gauges shall be carried out directly, using optical or other suitable equipment. 9 Identification Inspection gauges shall be identified by the following information: - “IS0 15245”; - “1 8P”, “25P”, “30P” as appropriate; - “I-” (followed by the appropriate number of the gauge for
43、example “1-1”. 6 EN IS0 15245-22001 Bibliography I IS0 1502, IS0 general-purpose mefric screw fhreads - Gauges and gauging 7 EN IS0 15245-22001 Annex ZA (normative) Normative references to international publications with their corresponding European publications This European Standard incorporates,
44、by dated or undated reference, provisions from other publications. These normativereferences are cited at the appropriate places in the text, and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Sta
45、ndard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). NOTE Where an International Publication has been modified by common modifications, indicated by (mod.), the relevant EN/HD applies. Pu
46、blication Year EN/HD IS0 152451 2001 Gas cylinders - Parallel threads for connection EN IS0 152451 2001 of valves to gas cylinders - Part 1: Specification BS EN IS0 15245-212001 BSI 389 Chiswick High Road Lon don w4 4AL BSI is the independent national body responsible for preparing British Standards
47、. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Re vi si ons British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions. It is the consta
48、nt aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel:
49、 +44 (0)20 8996 9000. Fax: +44 (0)20 8996 7400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards. Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services. Tel: +44 (0)20 8996 9001. Fax: +44 (0)20 8996 7001. Email: orders&-. Standards are also available from the BSI website at http:/www.bsi-. In response to orders for international standards, it is BSI policy to
