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CEN

EN 12953-4:2018

(Main)

Shell boilers - Part 4: Workmanship and construction of pressure parts of the boiler

Shell boilers - Part 4: Workmanship and construction of pressure parts of the boiler

This European Standard specifies requirements for the workmanship and construction of shell boilers as defined in EN 12953-1.
NOTE 1   For other components such as water tube walls, see the EN 12952 series.
NOTE 2   For economizers and superheaters, see EN 12953-4 or EN 12952-5.

Großwasserraumkessel - Teil 4: Verarbeitung und Bauausführung für drucktragende Kesselteile

Diese Europäische Norm legt Anforderungen für die Verarbeitung und Bauausführung von in EN 12953 1 definierten Großwasserraumkesseln fest.
ANMERKUNG 1   Für andere Bauteile wie Wasserrohrwände, siehe Normenreihe EN 12952.
ANMERKUNG 2   Für Vorwärmer und Überhitzer, siehe EN 12953 4 oder EN 12952 5.

Chaudières à tubes de fumée - Partie 4 : Fabrication et construction des parties sous pression des chaudières

La présente Norme européenne spécifie les exigences de fabrication et de construction des chaudières à tubes de fumée telles que définies dans l’EN 12953-1.
NOTE 1   Pour les autres composants, tels que les parois à tubes d’eau, voir la série des EN 12952.
NOTE 2   Pour les économiseurs et les surchauffeurs, voir l'EN 12953-4 ou l'EN 12952-5.

Mnogovodni kotli - 4. del: Izdelava in izvedba tlačno obremenjenih delov kotla

Ta del tega evropskega standarda velja za mnogovodne kotle, kot je opredeljeno v standardu prEN 12953-1. Ta del standarda določa pravila za izdelavo in konstrukcijo mnogovodnih kotlov.

General Information

Status
Published
Publication Date
27-Mar-2018
Withdrawal Date
29-Sep-2018
ICS
27.060.30 - Boilers and heat exchangers
27.100 - Power stations in general
Technical Committee
CEN/TC 269 - Shell and water tube boilers
Drafting Committee
CEN/TC 269/WG 2 - Shell boilers
Current Stage
9060 - Closure of 2 Year Review Enquiry - Review Enquiry
Start Date
02-Sep-2023
Completion Date
02-Sep-2023
Directive
2014/68/EU - Directive 2014/68/EU of the European Parliament and of the Council of 15 May 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of pressure equipment
97/23/EC - Directive 97/23/EC of the European Parliament and of the Council of 29 May 1997 on the approximation of the laws of the Member States concerning pressure equipment
Mandate
M/071 - Mandate to CEN for standardization in the field of Pressure equipment
Ref Project
SIST EN 12953-4:2018 - Shell boilers - Part 4: Workmanship and construction of pressure parts of the boiler

Relations

Replaces
EN 12953-4:2002 - Shell boilers - Part 4: Workmanship and construction of pressure parts of the boiler
Effective Date
08-Jun-2022

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Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 12953-4:2018
01-maj-2018
1DGRPHãþD
SIST EN 12953-4:2002
0QRJRYRGQLNRWOLGHO,]GHODYDLQL]YHGEDWODþQRREUHPHQMHQLKGHORYNRWOD
Shell boilers - Part 4: Workmanship and construction of pressure parts of the boiler
Großwasserraumkessel - Teil 4: Verarbeitung und Bauausführung für drucktragende
Kesselteile
Chaudières à tubes de fumée - Partie 4 : Fabrication et construction des parties sous
pression des chaudières
Ta slovenski standard je istoveten z: EN 12953-4:2018
ICS:
27.060.30 Grelniki vode in prenosniki Boilers and heat exchangers
toplote
SIST EN 12953-4:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 12953-4:2018

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SIST EN 12953-4:2018


EN 12953-4
EUROPEAN STANDARD

NORME EUROPÉENNE

March 2018
EUROPÄISCHE NORM
ICS 27.060.30 Supersedes EN 12953-4:2002
English Version

Shell boilers - Part 4: Workmanship and construction of
pressure parts of the boiler
Chaudières à tubes de fumée - Partie 4 : Fabrication et Großwasserraumkessel - Teil 4: Verarbeitung und
construction des parties sous pression des chaudières Bauausführung für drucktragende Kesselteile
This European Standard was approved by CEN on 6 December 2017.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12953-4:2018 E
worldwide for CEN national Members.

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SIST EN 12953-4:2018
EN 12953-4:2018 (E)
Contents Page
European foreword . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Symbols . 7
5 General requirements . 7
5.1 General . 7
5.2 Traceability . 8
5.2.1 General . 8
5.2.2 Material . 8
5.2.3 Welding . 8
5.2.4 Inspection (NDT) . 8
5.3 Cylindrical shell
...

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This document specifies requirements for the inspection during and after construction, documentation and marking of shell boilers as defined in EN 12953-1.
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1.1   General
This European Standard applies to shell boilers with volumes in excess of 2 litres for the generation of steam and/or hot water at a maximum allowable pressure greater than 0,5 bar and with a temperature in excess of
110 °C.
The purpose of this European Standard is to ensure that the hazards associated with the operation of shell boilers are reduced to a minimum and that adequate protection is provided to contain the hazards that still prevail when the shell boiler is put into service. This protection will be achieved by the proper application of the design, manufacturing, testing and inspection methods and techniques incorporated in the various parts of this European Standard. Where appropriate, adequate warning of residual hazards and the potential for misuse are given in the training and operating instructions and local to the equipment concerned (see EN 12953-7 and EN 12953-8).
It is the manufacturer's responsibility, in addition to complying with the requirements of this standard, to take into consideration special measures which could be necessary in order to achieve by manufacturing the required level of safety in accordance with the EU Directive 97/23/EC (PED).
NOTE 1   Further requirements relating to operating instructions in prEN 12953-13 and to hazard analysis in
CEN/TS 764-6 should be taken into consideration.
This European Standard specifies requirements for both directly fired and electrically heated boilers including Low Pressure Boilers (LPB, see 3.6) as well as for heat recovery boilers with a gas-side pressure not exceeding 0,5 bar of cylindrical design, constructed from carbon or carbon manganese steels by fusion welding and a design pressure not exceeding 40 bar. The boilers covered by this European Standard are intended for land use for providing steam or hot water (typical examples are shown in Figures 1 to 6).
For Low Pressure Boilers (LPB) less stringent requirements concerning design and calculation are acceptable. Details are defined in the respective clauses.
NOTE 2   For boilers operating at a pressure on the gas-side greater than 0,5 bar the rules of this standard equally apply. However, it is generally considered that additional design analysis, inspection and testing may be necessary.
Where a particular boiler is a combination of shell and water-tube design then the water-tube standard series EN 12952 is used in addition to this European Standard. One such example of this combination is shown in Figure 3.
This European Standard applies to the generator, from the feed-water or water inlet connection to the steam or water outlet connection and to all other connections, including the valves and steam and water fittings. If welded ends are used, the requirements specified herein begin or end at the weld where flanges, if used, would have been fitted.
1.2   Exclusions
This European standard does not apply to the following types of boilers and equipments:
a)   water-tube boilers;
b)   non stationary boilers, e.g. locomotive boilers;
c)   thermal oil boilers;
d)   boilers where the main pressure housing is made of cast material.
e)   pumps, gaskets, etc.
f)   brickwork setting and insulation, etc.
NOTE   Stainless steel boilers are covered by EN 14222.

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This European Standard specifies the following materials for the pressure bearing parts of shell boilers and equipment of shell boilers (e.g. valves), subjected to internal and external pressure including integral attachments (non pressure bearing parts):
   flat products (plate) and parts formed from flat products (e.g. shell, furnace, dished ends);
   tubes and parts formed from tubes (e.g. bending, elbows, reducers, fittings);
   forgings and cast products ;
   bolting materials;
   welding consumables.

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Shell Boilers - Part 6: Requirements for equipment for the boiler
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This part of this European Standard specifies the minimum requirements for safety related equipment for shell boilers as defined in EN 12953-1, to ensure the boiler operates within the allowable limits (pressure, temperature, etc.) and if the limits are exceeded the energy supply shall be interrupted and locked out without manual (human) intervention at the boiler.
NOTE 1   The maximum time of operation without manual (human) intervention should be defined for each boiler system.
NOTE 2   Annex C (informative) gives recommendations of operation and testing of the boiler system with a maximum time of operation without manual (human) intervention of 72 hours.

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This part of the European Standard applies to all shell boilers as defined in prEN 12953-1 which are heated by combustion of one or more fuels or by hot gases for the generation of steam and/or hot water. This European Standard applies to those components between the feedwater inlet and the steam outlet of the steam generator. The quality of the steam produced is outside the scope of this standard.

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This Part of this European Standard specifies a concise procedure for conducting thermal performance tests, using the indirect (losses) procedure for boilers for steam or hot water. Test results are based on either the gross or net calorific value of the fuel.
This concise procedure provides a convenient means for assessing boilers which thermodynamically simple, i.e. having a single major source of heat input and a simple circuit for water, steam or high temperature heat transfer fluid.
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