Shell boilers
Part 2: Materials for pressure partsofboilers and accessories
..makingexcellence ahabit
National foreword
Published by BSI Standards Limited 2012 The British Standards Institution 2012
ISBN 978 0 580 70580 9
ICS 23.020.01; 27.060.30
Amendments issued since publication
Date Text affected
This British Standard is the UK implementation of EN 12953-2:2012.It supersedes BS EN 12953-2:2002 which is withdrawn.
Technical Committee PVE/2 Water Tube And Shell Boilers. The UK participation in its preparation was entrusted to
A list of organizations represented on this mittee can beobtained on request to its secretary.
This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correctapplication.
Compliance with a British Standard cannot confer immunity fromlegal obligations.
This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 March 2012.
English Version
Shellboilers-Part 2:Materialsforpressurepartsofboilersand accessories
GroBwasserraumkessel - Teil 2: Werkstoffe firdrucktragende Kesselteile und Zubehor
Chaudieres a tubes de fumee - Partie 2: Materiaux des parties sous pression des chaudieres et des accessoires
This European Standard was approved by CEN on 7 January 2012.
CEN members are bound to ply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration Up-to-date lists and bibliographical references conceming 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 oficial versions (Engish French Geman) A versionin any other language made by translationstatus as the official versions. under the responsibilty of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
Finland France Gemany Greece Hngary Iceland reland ltaly Laia Liania Luxmourg Mala Ntherlands Nway Poland Portugal Romania Slovakia Slovenia Spain Sweden Switzerland Turkey and United Kingdom.
Management Centre: Avenue Marnix 17 B-1000 Brussels
Contents
Foreword.. ..31 Scope. ..52 Normative references.. ...53 3.1 General requirements for material selection... Genera.. .. .63.2 3.3 European Approvals for Materials (EAM).. Material specification.... ... ..63.4 Particular Material Appraisals (PMA)..4 4.1 Materials for pressure bearing parts . Shell boiler body. ..7 ..74.2 Valves and other forged or cast products Bolting material.. ..84.3 4.4 Flange material...4.5 4.6 Welding consumables. Material acceptance tests 10 104.7 4.8 Marking for the main pressure-bearing parts. Inspection documents.. 10 104.8.1 General. 104.8.3 4.8.2 Material supplied from a supplier other than the material manufacturer. Material supplied from the material manufacturer. 10 104.8.4 Material traceability during cutting and forming. Materials for non pressure-bearing parts 11Annex A (informative) Significant technical changes between this European Standard and the 5 ...11previous edition... 12Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 97/23/EC. 13Bibliography... 14
Foreword
This document (EN 12953-2:2012) has been prepared by Technical Committee CEN/TC 269 *Shell andwater-tube boilers* the secretariat of which is held by DlN.
withdrawn at the latest by September 2012.
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 12953-2:2002.
This document has been prepared under a mandate given to CEN by the European Commission and theEuropean Free Trade Association and supports essential requirements of EU Directive(s).
For relationship with EU Directive(s) see informative Annex ZA which is an integral part of this document.
Annex A provides details of significant technical changes between this European Standard and the previousedition.
The European Standard EN 12953 concerning shell boilers consists of the following parts:
--Part 1: General;Part 2: Materials for pressure parts of boilers and accessories;-Part 3: Design and calculation for pressure parts - Part 4: Workmanship and construction of pressure parts of the boiler --Part 5: Inspection during construction documentation and marking of pressure parts of the boiler --Part 6: Requirements for equjpment for the boiler --Part 7: Requirements forfiring systems forliquid and gaseous fuels for the boiler - Part 8: Requirements for safeguards against excessive pressure;-Part 9: Requrements for limiting devices of the boiler and accessories;- Part 10: Requirements for feedwater and boiler water quality --Part 11: Acceptance tests -Part 12: Requirerments for grate firing systems for solid fuels for the boiler --Part 13: Operating instructions; CR 12953 Part 14: Guideline for invoivement of an inspection body independent of the manufacturer.
