BS-EN-12284-2003.pdf
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1、BRITISH STANDARD BS EN 12284:2003 Refrigerating systems and heat pumps Valves Requirements, testing and marking The European Standard EN 12284:2003 has the status of a British Standard ICS 23.060.20 ? BS EN 12284:2003 This British Standard, was published under the authority of the Standards Policy a
2、nd Strategy Committee on 26 September 2003 BSI 26 September 2003 ISBN 0 580 42699 8 National foreword This British Standard is the official English language version of EN 12284:2003. The UK participation in its preparation was entrusted to Technical Committee RHE/18, Refrigeration safety, which has
3、the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section ent
4、itled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Complian
5、ce with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related in
6、ternational and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 63 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amen
7、dments issued since publication Amd. No. DateComments EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12284 September 2003 ICS 23.060.20 English version Refrigerating systems and heat pumps - Valves - Requirements, testing and marking Systmes de rfrigration et pompes chaleur - Robinetterie - Ex
8、igences, essais et marquage Klteanlagen und Wrmepumpen - Ventile - Anforderungen, Prfung und Kennzeichnung This European Standard was approved by CEN on 21 April 2003. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European St
9、andard 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 Management Centre or to any CEN member. This European Standard exists in three official versions (English, French,
10、 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 status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark,
11、 Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue
12、de Stassart, 36 B-1050 Brussels 2003 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12284:2003 E EN 12284:2003 (E) 2 Contents Page Foreword3 1Scope 3 2Normative references 3 3Terms and definitions4 4List of Symbols 6 5General Requi
13、rements.7 6Materials8 7Design.10 8Construction and workmanship.11 9Testing 14 10Marking and additional information.17 11Documentation.18 Annex A (normative) Procedure for the design of a valve by use of a simplified method of calculation20 Annex B (normative) Experimental design method for valves.23
14、 Annex C (normative) Determination of the allowable pressure at the maximum operating temperature .28 Annex D (normative) Determination of the allowable pressure at minimum operating temperature (Requirements to avoid brittle fracture) 29 Annex E (informative) Compilation of material characteristics
15、 of often used materials34 Annex F (informative) Justification of the individual methods.54 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 97/23/EC60 Bibliography61 EN 12284:2003 (E) 3 Foreword This document (EN 12284:2003) has been
16、prepared by 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 endorsement, at the latest b
17、y March 2004, and conflicting national standards shall be withdrawn at the latest by March 2004. 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). For relationship w
18、ith EU Directive(s), see informative Annex ZA, which is an integral part of this document. Annexes A, B, C, D are normative and annexes E and F are informative According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement th
19、is European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and the United Kingdom. 1 Scope This European standard specifies safety requirem
20、ents, safety factors, test methods, test pressures used and marking of refrigerating valves and other components with similar bodies, hereinafter called valves, for use in refrigerating systems. It describes the procedure to be followed when designing (by calculation or by an experimental design met
21、hod) valve parts subjected to pressure as well as the criteria to be used in the selection of materials. The standard describes methods by which reduced impact values at low temperatures may be taken into account in a safe manner. This standard applies to the design of bodies and bonnets for pressur
22、e relief devices, including bursting disc devices, with respect to pressure containment but it does not apply to any other aspects of the design or application of pressure relief devices. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other
23、publications. These normative references 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 Standard only when incorporated in it by amendment or re
24、vision. For undated references the latest edition of the publication referred to applies. EN 378-1, Refrigerating systems and heat pumps Safety and environmental requirements Part 1: Basic requirements, definitions, classification and selection criteria. EN 378-2:2000, Refrigerating systems and heat
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