ДСТУ EN 12952-6:2015
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EN 12952-6:2011
Water-tube boilers and auxiliary installations - Part 6: Inspection during construction; documentation andmarking of pressure parts of the boiler
Supersedes EN 12952-6:2002
English Version
Water-tube boilers and auxiliary installations - Part 6: Inspectionduring construction; documentation and marking of pressureparts of the boiler
This European Standard was approved by CEN on 25 June 2011. ,
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 CEN-CENELEC 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 CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Management Centre: Avenue Marnix 17, B-1000 Brussels
Contents Page
Foreword 3
1 Scope 5
2 Normative references 5
3 Terms and definitions 6
4 General organisation 6
4.1 General 6
4.2 Conformity assessment 6
4.3 Competency of the manufacturer 6
4.4 Calibration of equipment 6
4.5 Inspection activities 7
5 Non-destructive testing (NDT) of parent materials 10
6 Qualification of welding procedure specification 10
6.1 General 10
6.2 Application of EN ISO 15614-1 10
7 Welder and welding operator qualification 12
8 Production test plates for drums 13
8.1 General 13
8.2 Number of production test plates 13
8.3 Tests required 13
8.4 Acceptance criteria 14
8.5 Non-conformance of results 15
9 Non-destructive testing of welds 16
9.1 Type and extent of non-destructive testing 16
9.2 Qualification of non-destructive testing (NDT) personnel 20
9.3 The detection of surface imperfections 20
9.4 Testing for volumetric imperfections 23
9.5 Non-destructive testing reports 27
10 Final inspection 28
10.1 Visual and dimensional examinations 28
10.2 Hydrostatic pressure test 28
11 Documentation 29
12 Marking 30
Annex A (normative) Special requirements for composite tubes 31
Annex В? (informative) Significant technical changes between this European Standard and the previous edition 34
Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 97/23/EC 35
Bibliography 36
Foreword
This document (EN 12952-6:2011) has been prepared by Technical Committee CEN/TC269 “Shell and water-tube boilers”, 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 by February 2012, and conflicting national standards shall be withdrawn at the latest by February 2012.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 12952-6:2002.
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 Ell Directive(s).
For relationship with EU Directive 97/23/EC, see informative Annex ZA, which is an integral part of this document.
Annex The European Standard series EN 12952 concerning water-tube boilers and auxiliary installations 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: In-service boiler life expectancy calculations;
—? Part 5. Workmanship and construction of pressure parts of the boiler;
—? Part 6: Inspection during construction, documentation and marking of pressure parts of the boiler;
—? Part 7: Requirements for equipment for the boiler;
—? Part 8: Requirements for firing systems for liquid and gaseous fuels for the boiler;
—? Part 9: Requirements for firing systems for pulverized solid fuels for the boiler;
—? Part 10: Requirements for safeguards against excessive pressure;
—? Part 11: Requirements for limiting devices of the boiler and accessories;
—? - Part 12: Requirements for boiler feedwater and boiler water quality;
—? Part 13: Requirements for flue gas cleaning systems;
—? Part 14: Requirements for flue gas DENOX-systems using liquefied pressurized ammonia and ammonia water solution;
—? Part 15: Acceptance tests;
—? Part 16: Requirements for grate and fluidized-bed firing systems for solid fuels for the boiler;
—? CR 12952 Part 17: Guideline for the involvement of an inspection body independent of the manufacturer.
NOTE 1 A Part 18 on operating instructions is currently in preparation
Although these parts may be obtained separately, it should be recognized that the parts are inter-dependent. As such, the design and manufacture of water-tube boilers requires the application of more than one part in order for the requirements of the European Standard to be satisfactorily fulfilled.
NOTE 2 Part 4 and Part 15 are not applicable during the design, construction and installation stages.
NOTE 3 A "Boiler Helpdesk" has been established in CEN/TC 269 which may be contacted for any questions regarding the application of European Standards series EN 12952 and EN 12953, see the following website: http://www.boiler-helpdesk.din.de
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. 1 Scope
This European Standard specifies requirements for the inspection during construction, documentation and marking of water-tube boilers as defined in EN 12952-1.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 287-1:2004, Qualification test of welders — Fusion welding — Part 1: Steels
EN 473:2008, Non-destructive testing — Qualification and certification of NDTpersonnel— General principles
EN 571 -1, Non-destructive testing — Penetrant testing — Part 1: General principles
EN 1321, Destructive tests on welds in metallic materials — Macroscopic and microscopic examination of welds
EN 1418:1997, Welding personnel — Approval testing of welding operators for fusion welding and resistance weld setters for fully mechanized and automatic welding of metallic materials
EN 1435, Non-destructive testing of welds — Radiographic testing of welded joints
EN 12952-1:2001, Water-tube boilers and auxiliary installations — Part 1: General
EN 12952-2, Water-tube boilers and auxiliary installations — Part 2: Materials for pressure parts of boilers and accessories
EN 12952-3:2011, Water-tube boilers and auxiliary installations — Part 3: Design and calculation for pressure parts
EN 12952-5:2011, Water-tube boilers and auxiliary installations — Part 5: Workmanship and construction of pressure parts of the boiler
EN ISO 148-1:2010, Metallic materials— Charpy pendulum impact test — Part 1: Test method (ISO 148- 1:2009)
ENISO 5817, Welding — Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) — Quality levels for imperfections (ISO 5817:2003, corrected version:2005, including Technical Corrigendum 1:2006)
EN ISO 6520-1, Welding and allied processes — Classification of geometric imperfections in metallic materials — Part 1: Fusion welding (ISO 6520-1:2007)
EN ISO 11666, Non-destructive testing of welds — Ultrasonic testing — Acceptance levels (ISO 11666:2010)
EN ISO 15613:2004, Specification and qualification of welding procedure for metallic materials— Qualification based on pre-production welding test (ISO 15613:2004)
EN ISO 15614-1:2004, Specification and qualification of welding procedures for metallic materials — Welding procedure test — Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys (ISO 15614- 1:2004)
EN ISO 17637, Non-destructive testing of welds - Visual testing of fusion-welded joints (ISO 17637:2003)
EN ISO 17638, Non-destructive testing of welds — Magnetic particle testing (ISO 17638:2003)
EN ISO 17640, Non-destructive testing of welds — Ultrasonic testing — Techniques, testing levels, and assessment (ISO 17640:2010)
EN ISO 23277, Non-destructive testing of welds - Penetrant testing of welds - Acceptance levels (ISO 23277:2006)
EN ISO 23278, Non-destructive testing of welds — Magnetic particle testing of welds — Acceptance levels (ISO 23278:2006)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 12952-1:2001 and the following apply.
3.1
inspection
conformity evaluation by observation and judgement accompanied as appropriate by measurement, testing or gauging
4 General organisation
4.1 General
The manufacturer sha