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EN 12952-6:2011
Water-tube boilers and auxiliary installations - Part 6: Inspection during construction; documentation and
marking of pressure parts of the boiler
прийнято як національний стандарт
методом «підтвердження» за позначенням
ДСТУ EN 12952-6:2015
(EN 12952-6:2011, IDT)
Котли водотрубні та допоміжне устаткований. Частина 6. Перевіряння під час виготовлення;
документація та маркування складників котлів, що перебувають під тиском
Копію цього стандарту можна отримати
у Національному фонді нормативних документів
З наданням чинності від 2016 -01-01
EN 12952-6
August 2011
Chaudieres a tubes d’eau et installations auxiliaires - Partie
6: Controles en cours de construction, documentation et
marquage des parties sous pression de la chaudiere
Wasserrohrkessel und Anlagenkomponenten - Teil 6:
Prufung wahrend der Fertigung, Dokumentation und
Kennzeichnung fur drucktragende Kesselteile
EUROPEAN STANDARD
NORME EUROPEENNE
EUROPAISCHE NORM
S
ICS 27.040
upersedes EN 12952-6:2002English Version
Water-tube boilers and auxiliary installations - Part 6: Inspection
during construction; documentation and marking of pressure
parts 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.
EUROPEAN COMMITTEE FOR STANDARDIZATION
СОМІТЁ EUROPEEN DE NORMALISATION
EUROPAISCHES KOMITEE FUR NORMUNG
M
Ref No. EN 12952-6:2011. E
anagement Centre: Avenue Marnix 17, B-1000 Brussels© 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members
.Contents Page
Foreword 3
Scope 5
Normative references 5
Terms and definitions 6
General organisation 6
General 6
Conformity assessment 6
Competency of the manufacturer 6
Calibration of equipment 6
Inspection activities 7
Non-destructive testing (NDT) of parent materials 10
Qualification of welding procedure specification 10
General 10
Application of EN ISO 15614-1 10
Welder and welding operator qualification 12
Production test plates for drums 13
General 13
Number of production test plates 13
Tests required 13
Acceptance criteria 14
Non-conformance of results 15
Non-destructive testing of welds 16
Type and extent of non-destructive testing 16
Qualification of non-destructive testing (NDT) personnel 20
The detection of surface imperfections 20
Testing for volumetric imperfections 23
Non-destructive testing reports 27
Final inspection 28
Visual and dimensional examinations 28
Hydrostatic pressure test 28
Documentation 29
Marking 30
(normative) Special requirements for composite tubes 31
(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 В provides details of significant technical changes between this European Standard and the previous edition.
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.Scope
This European Standard specifies requirements for the inspection during construction, documentation and marking of water-tube boilers as defined in EN 12952-1.
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)
Terms and definitions
For the purposes of this document, the terms and definitions given in EN 12952-1:2001 and the following apply.
inspection
conformity evaluation by observation and judgement accompanied as appropriate by measurement, testing or gauging
[EN ISO 9000:2005]
General organisation
General
The manufacturer shall be responsible for ensuring the boiler conforms to the requirements of this European Standard. Conformance shall be confirmed by completing a series of inspection activities as detailed in Table 4.5-1.
Except where explicitly stated otherwise in this European Standard, inspection activities applicable to a manufacturer's works shall also be applicable to operations carried out on a construction site.
Conformity assessment
Guidance in the use of the conformity assessment procedures is given in EN 12952-1:2001, Annex A.
Competency of the manufacturer
If an assessment of the competency of the manufacturer is required, guidance is given in EN 12952-5:2011, Annex F.
Calibration of equipment
The manufacturer shall establish procedures to ensure that tools, gauges, instruments and other measuring and testing devices used in the manufacture and inspection activities affecting boiler product quality, are properly controlled, calibrated and adjusted at specific intervals, to maintain accuracy within defined limits.
NOTE A system for calibration, e g in compliance with the EN ISO 9000 series, is be deemed to meet these requirements.
Inspection activities
The manufacturer shall confirm that the boiler components, as a minimum, conform to the requirements of this European Standard by performing and authenticating the activities listed in Table 4.5-1.
NOTE Depending upon the conformity assessment module adopted, some of the inspection activities listed should also be assessed by a responsible authority. For the guidance of the manufacturer, the specific involvement of such a responsible authority is indicated in CR 12952-17.
Table 4.5-1 — List of inspection activities to be undertaken by the manufacturer
|
Reference |
Area of activity |
Inspection operation |
|
1 |
Design and general documentation |
|
|
1.1 |
Design data/calculations |
Ensure that the design data/calculations conform to: — technical specifications, if applicable; — the requirements of this European Standard. |
|
1.2 |
Manufacturing drawings |
Ensure that drawing information conforms to:
|
|
1.3 |
Purchase specifications |
Ensure that material and component specifications conform to:
|
|
1.4 |
Specifications for sub-contracted parts |
Ensure that the specification for sub-contracted parts conform to:
|
|
2 |
Material |
|
|
2.1 |
Material certificates |
Verify that certificate information and results conform to the design specification. |
|
2.2 |
Welding consumables |
Verify that the consumables to be used are in accordance with the design specification. |
|
2.3 |
Material identification |
Identify the material with the material certificates and check the markings. |
|
2.4 |
Transfer of identification marks |
Ensure that the transfer of identification marks is in accordance with the approved procedure. |
|
2.5 |
Acceptance of sub-contracted parts |
Verify that sub-contracted parts conform to the manufacturer’s specification. |
|
3 |
Manufacturing and welding |
|
|
3.1 |
Welding procedure specifications |
Verify that appropriate welding specifications are available and that their contents are compatible with the welding procedure qualifications. |
|
3.2 |
Welding procedure qualifications |
Verify that the welding procedures are appropriate for the materials and the field of welding application, and that they have been approved by a responsible authority. |
|
3.3 |
Welder qualification |
Verify that the welder qualifications have been approved by a responsible authority and that they are available and valid. |
Table 4.5-1 (continued)
|
Reference |
Area of activity |
Inspection operation |
|
3.4 |
Forming procedures |
Verify that forming procedures are available, where applicable, and their contents are appropriate to the product to be formed. |
|
3.5 |
Joint preparations |
Examine material cut edges where thermal cutting has been used and confirm machined preparations are to the correct profile. |
|
3.6 |
Formed parts |
Examine formed parts in accordance with the requirements of EN 12952-5:2011, Clause 7. |
|
3.7 |
Weld assembly |
Examine the weld assembly, including dimensional check. |
|
3.8 |
Weld root |
Examine second side of weld assembly, if applicable, after the first side of weld has been completed and the root cleaned. |
|
3.9 |
Production test plates, if any |
Identify and mark production test plates. |
|
Verify that any PWHT on production test plates independent of the component complies with the specific heat treatment applied to the component. |
||
|
Examine NDT reports on production test plates. |
||
|
Identify and mark the test specimens taken from production test plates for mechanical tests. |
||
|
Verify that the test information and results from the mechanical tests conform to the requirements of this European Standard. |
||
|
4 |
Non-destructive testing (NDT) |
|
|
4.1 |
Non-destructive testing procedures |
Verify that appropriate non-destructive testing procedures are available and ensure the qualification of the originator is appropriate. |
|
4.2 |
Non-destructive testing operator qualifications |
Ensure the non-destructive testing operator's qualifications are appropriate. |
|
4.3 |
Non-destructive testing operation |
Scrutinise any radiographs and check conformance to the acceptance criteria. |
|
Scrutinise the operator's ultrasonic testing reports. |
||
|
4.4 |
Non-destructive testing reports |
Verify that the information and results conform to the acceptance criteria. |
|
5 |
Post-weld heat treatment (PWHT) |
|
|
5.1 |
PWHT procedures |
Verify that the post-weld heat treatment procedures conform to this European Standard |
|
5.2 |
PWHT records |
Verify that temperature/time recordings conform to the requirements of this European Standard. |
