BS-EN-12516-2-2004.pdf
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1、BRITISH STANDARD BS EN 12516-2:2004 Industrial valves Shell design strength Part 2: Calculation method for steel valve shells The European Standard EN 12516-2:2004 has the status of a British Standard ICS 23.060.01 ? BS EN 12516-2:2004 This British Standard was published under the authority of the S
2、tandards Policy and Strategy Committee on 23 July 2004 BSI 23 July 2004 ISBN 0 580 44152 0 National foreword This British Standard is the official English language version of EN 12516-2:2004. The UK participation in its preparation was entrusted by Technical Committee PSE/7, Industrial valves, to Su
3、bcommittee PSE/7/6, Industrial valves: steel valves, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in thi
4、s document may be found in the BSI Catalogue under the section entitled “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 con
5、tract. Users are responsible for its correct application. Compliance 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
6、for change, and keep the UK interests informed; monitor related international 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 88, an inside back cover and a back cover. The BSI copyr
7、ight notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12516-2 July 2004 ICS 23.060.01 English version Industrial valves - Shell design strength - Part 2: Calcu
8、lation method for steel valve shells Robinetterie industrielle - Rsistance mcanique des enveloppes - Partie 2: Mthode de calcul relative aux enveloppes dappareils de robinetterie en acier Industriearmaturen - Gehusefestigkeit - Teil 2: Berechnungsverfahren fr drucktragende Gehuse von Armaturen aus S
9、tahl This European Standard was approved by CEN on 16 April 2004. 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
10、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 memb
11、er 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lith
12、uania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2004 CEN All
13、 rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12516-2:2004: E EN 12516-2:2004 (E) 2 Contents page Foreword3 Introduction.4 1 Scope 5 2 Normative references5 3 Symbols and units.5 4 General conditions for strength calculation.6 5 Design
14、pressure.7 6 Nominal design stresses for pressure parts other than bolts7 6.1 General7 6.2 Steels and cast steels other than defined in 6.3, 6.4 or 6.5.7 6.3 Austenitic steel and austenitic cast steel with a minimum rupture elongation not less than 30 %.7 6.4 Austenitic steel and austenitic cast ste
15、el with a minimum rupture elongation not less than 35 %8 6.5 Non-alloy and low-alloy cast steel.8 6.6 Creep conditions8 7 Calculation methods for the wall thickness of valve bodies 8 7.1 General8 7.2 Valve bodies.9 8 Calculation methods for bolted bonnets and covers.28 8.1 General28 8.2 Covers made
16、of flat plates28 8.3 Covers consisting of a spherically domed end and an adjoining flanged ring 45 8.4 Dished heads49 9 Calculation method for pressure sealed bonnets and covers54 10 Calculation methods for flanges56 10.1 General56 10.2 Circular flanges56 10.3 Oval flanges65 10.4 Rectangular or squa
17、re flanges.68 10.5 Calculation of the bolt diameter.70 10.6 Design temperature.71 11 Calculation methods for glands.71 11.1 Loads 71 11.2 Gland bolts.72 11.3 Gland flanges.72 11.4 Other components.72 12 Fatigue 72 13 Marking.72 Annex A (informative) Allowable stresses.73 Annex B (informative) Charac
18、teristic values of gaskets and joints77 Annex C (informative) Calculation procedure .86 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 97/23/EC87 Bibliography88 EN 12516-2:2004 (E) 3 Foreword This document (EN 12516-2:2004) has been
19、prepared by Technical Committee CEN/TC 69 “Industrial valves”, the secretariat of which is held by AFNOR. 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 2005, and conflicting national sta
20、ndards shall be withdrawn at the latest by January 2005. 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 with EU Directive(s), see informative ann
21、ex ZA, which is an integral part of this document. EN 12516, Industrial valves Shell design strength, consists of four parts: Part 1: Tabulation method for steel valve shells Part 2: Calculation method for steel valve shells Part 3: Experimental method Part 4: Calculation method for valve shells in
22、metallic materials other than steel The annexes A, B and C are informative. This document includes a Bibliography. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cypru
23、s, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 12516-2:2004 (E) 4 Introduction EN 12516, Indust
24、rial valves Shell design strength, is in four parts. Parts 1 and 2 specify methods for determining the thickness of steel valve shells by tabulation or calculation methods respectively. Part 3 establishes an experimental method for assessing the strength of valve shells in steel, cast iron and coppe
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