BS EN 849-1997 可移动的储气瓶.气瓶阀.规范和定型试验.pdf

BRITISH STANDARD BS EN 8491997 Incorporating Amendments Nos. 1 and 2 Transportable gas cylinders Cylinder valves Specification and type testing The European Standard EN 8491996, with the incorporation of amendments A11999 and A22001, has the status of a British Standard ICS 23.060.40 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS LicenseeBureau Veritas/5959906001, 11/08/2004 060950 MST Questions or comments about this message please call the Document Policy Group at 303-397-2295. --,,,,,,,,,,,,,,,,,,--,,,,,,,--- BS EN 8491997 This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 March 1997 BSI 14 January 2002 The following BSI references relate to the work on this standard Committee reference PVE/3 Draft for comment 92/812941 X ISBN 0 580 26783 0 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee PVE/3, Gas containers, upon which the following bodies were represented Aluminium Extruders’ Association Aluminium Federation British Compressed Gases Association British Fire Consortium British Gas plc British Iron and Steel Producers’ Association British Soft Drinks Association Ltd. Engineering Equipment and Materials Users’ Association Fire Extinguishing Trades Association Health and Safety cutive Home Office Institution of Chemical Engineers LP Gas Association Marine Safety Agency Ministry of Defence National Engineering Laboratory National Physical Laboratory Safety Assessment Federation Ltd. Safety Equipment Association Tube Investments Chesterfield Tube Co. Ltd. Tubes Investments Limited The following bodies were also represented in the drafting of the standard, through sub-committees and panels British Association of Breathing Apparatus Service Engineers Department of Health Amendments issued since publication Amd. No. DateComments 10588November 1999 Addition of new Annex C 1334514 January 2002 Indicated by a sideline Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS LicenseeBureau Veritas/5959906001, 11/08/2004 060950 MST Questions or comments about this message please call the Document Policy Group at 303-397-2295. --,,,,,,,,,,,,,,,,,,--,,,,,,,--- BS EN 8491997 BSI 14 January 2002 i Contents Page Committees responsibleInside front cover National forewordii Foreword2 Text of EN 8493 Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS LicenseeBureau Veritas/5959906001, 11/08/2004 060950 MST Questions or comments about this message please call the Document Policy Group at 303-397-2295. --,,,,,,,,,,,,,,,,,,--,,,,,,,--- BS EN 8491997 ii BSI 14 January 2002 National foreword This British Standard has been prepared by Technical Committee PVE/3 and is the English language version of EN 8491996 Transportable gas cylinders Cylinder valves Specification and type testing, including amendments A11999 and A22001, published by the European Committee for Standardization CEN. EN 849 was produced as a result of international discussions in which the United Kingdom took an active part. This British Standard partially supersedes BS 341-11962, BS 341-11991 and BS 341-21963 which will be amended to elimate conflicting requirements. Cross-references 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” facility of the BSI Standards Electronic Catalogue. The Technical Committee has reviewed the provisions of ISO 51451990 to which normative reference is made in the text, and has decided that they are acceptable for use in conjunction with this standard. 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 obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 24, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Sidelining in this document indicates the most recent changes by amendment Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS LicenseeBureau Veritas/5959906001, 11/08/2004 060950 MST Questions or comments about this message please call the Document Policy Group at 303-397-2295. --,,,,,,,,,,,,,,,,,,--,,,,,,,--- w w w . b z f x w . c o m EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 849 July 1996 A1 April 1999 A2 June 2001 ICS 23.060.00 Descriptors Gas cylinders, compressed gases, liquified gases, dissolved gases, gas valves, design, perance uation, conity tests, marking English version Transportable gas cylinders Cylinder valves Specification and type testing includes amendments A11999 and A22001 Bouteilles gaz transportables Robinets de bouteilles Spcifications et essais de type inclut les amendements A11999 et A22001 Ortsbewegliche Gasflaschen Flaschen-Ventile Spezifikation und Typprfung enhlt nderungen A11999 und A22001 This European Standard was approved by CEN on 1996-01-22; amendment A1 was approved by CEN on 1999-01-08. Amendment A22001 was approved by CEN on 2001-05-10. 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 concerning such national standards may be obtained on application to the Central Secretariat 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 Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat rue de Stassart 36, B-1050 Brussels 1996 Copyright reserved to CEN members. Ref. No. EN 8491996 A11999 A22001 E Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS LicenseeBureau Veritas/5959906001, 11/08/2004 060950 MST Questions or comments about this message please call the Document Policy Group at 303-397-2295. --,,,,,,,,,,,,,,,,,,--,,,,,,,--- w w w . b z f x w . c o m EN 8491996 BSI 14 January 20022 Foreword This European Standard has been prepared by 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 1997, and conflicting national standards shall be withdrawn at the latest by January 1997. This European Standard has been ted for reference into the RID and/or the technical anns of the ADR. Therefore in this context the standards listed in the normative references and covering basic requirements of the RID/ADR not addressed within the present standard are normative only when the standards themselves are referred to in the RID and/or the technical anns of the ADR. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Foreword to amendment A1 This amendment EN 8491996/A11999 to EN 8491996 has been prepared by Technical Committee CEN/TC 23, Transportable gas cylinders, the Secretariat of which is held by BSI. This amendment to the European Standard EN 8491996 shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 1999, and conflicting national standards shall be withdrawn at the latest by October 1999. This amendment to EN 849 has been prepared to clarify certain important parameters and aspects of testing cyclinder valves in accordance with EN 849, 5.4.4. According to the CEN/CENELEC Internal Regulations, the national standards organizations of 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. This European Standard has been ted for reference into the RID and/or the technical anns of the ADR. Therefore in this context the standards listed in the normative references and covering basic requirements of the RID/ADR not addressed within the present standard are normative only when the standards themselves are referred to in the RID and/or the technical anns of the ADR. Foreword to amendment A2 This amendment EN 8491996/A22001 to EN 8491996 has been prepared by Technical Committee CEN/TC 23, Transportable gas cylinders, the Secretariat of which is held by BSI. This amendment to the European Standard EN 8491996 shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2001, and conflicting national standards shall be withdrawn at the latest by December 2001. This amendment to EN 849 has been prepared to align certain requirements with RID/ADR. This European Standard has been ted for reference into the RID and/or the technical anns of the ADR. Therefore in this context the standards listed in the normative references and covering basic requirements of the RID/ADR not addressed within the present standard are normative only when the standards themselves are referred to in the RID and/or the technical anns of the ADR. According to the CEN/CENELEC Internal Regulations, the national standards organizations of 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. Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS LicenseeBureau Veritas/5959906001, 11/08/2004 060950 MST Questions or comments about this message please call the Document Policy Group at 303-397-2295. --,,,,,,,,,,,,,,,,,,--,,,,,,,--- w w w . b z f x w . c o m EN 8491996 BSI 14 January 2002 3 Contents Page Foreword2 Introduction3 1Scope4 2Normative references4 3Definitions and symbols4 4Valve requirements5 5Prototype valve test9 6Marking18 7Test report18 Annex A normative Valve impact test19 Annex B inative Example of test sequence21 Annex C normative Endurance test22 Figure 1 External tightness6 Figure 2 Internal tightness7 Figure 3 Maximum dimensions for gas cylinder valves, protected by a cap8 Figure 4 Example of an ignition test installation15 Figure 5 Pressure cycle specification16 Figure 6 Example of acetylene flashback test apparatus17 Figure A.1 Impact test20 Figure C.1 Typical arrangement of computer controlled equipment23 Figure C.2 Diagram showing a typical cycle for endurance test24 Table 1 Sequence of tests tightness, endurance and fire resistance for type approval no variants11 Table 2 Test pressures for tightness tests12 Table 3 Test sequence14 Deleted Table B.1 Sequence of tests for type approval basic design plus two type variants21 Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS LicenseeBureau Veritas/5959906001, 11/08/2004 060950 MST Questions or comments about this message please call the Document Policy Group at 303-397-2295. --,,,,,,,,,,,,,,,,,,--,,,,,,,--- w w w . b z f x w . c o m EN 8491996 4 BSI 14 January 2002 Introduction The increased use of compressed gases has led to a corresponding increase in the number of gas cylinders that are in circulation throughout the world. Each gas cylinder is fitted with a valve, to contain and control the discharge of its contents. Such valves normally con to standards of perance and safety. 1 Scope This European Standard specifies requirements for gas cylinder valves and the of testing such valves, for type approval. This standard is applicable to valves to be fitted to gas cylinders, up to 150 l water capacity, intended to convey compressed, liquefied or dissolved gases. This standard is only applicable to valves operated by a hand wheel or a key. This standard is not applicable to valves for breathing equipment, fire extinguishers or cryogenic equipment. This standard is primarily for industrial gases other than LPG but may also be applied for LPG. However for dedicated LPG cylinders, see prEN 131531998, Specification and testing for Liquefied Petroleum Gases LPG Cylinder valves Manually operated, prepared by CEN/TC 286, Liquefied petroleum gas equipment and accessories. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate place 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 Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 629-1, Transportable gas cylinders 25E taper thread for connection of valves to gas cylinders Part 1 Specification. EN 720-2, Transportable gas cylinders Gases and gas mixtures Part 2 Determination of flammabil