iTeh StandardsiTeh Standards
EURUSD
Your shopping cart is empty.
CEN

EN 12953-6:2024

(Main)

Shell Boilers - Part 6: Requirements for equipment for the boiler

Shell Boilers - Part 6: Requirements for equipment for the boiler

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.

Großwasserraumkessel - Teil 6: Anforderungen an die Ausrüstung für den Kessel

Chaudières à tubes de fumée - Partie 6: Exigences pour l'équipement de la chaudière

Mnogovodni kotli - 6. del: Zahteve za opremo kotla

General Information

Status
Not Published
Publication Date
17-Dec-2024
ICS
27.060.30 - Boilers and heat exchangers
Technical Committee
CEN/TC 269 - Shell and water tube boilers
Drafting Committee
CEN/TC 269/WG 2 - Shell boilers
Current Stage
6055 - CEN Ratification completed (DOR) - Publishing
Start Date
20-Oct-2024
Due Date
29-Jan-2024
Completion Date
20-Oct-2024
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
Mandate
M/071 - Mandate to CEN for standardization in the field of Pressure equipment
M/601 - COMMISSION IMPLEMENTING DECISION of 1.3.2024 on a standardisation request to the European Committee for Standardization and the European Committee for Electrotechnical Standardization as regards pressure equipment and assemblies in support of Directive 2014/68/EU of the European Parliament and of the Council
Ref Project
kSIST FprEN 12953-6:2024 - Shell Boilers - Part 6: Requirements for equipment for the boiler

Relations

Revises
EN 12953-6:2011 - Shell Boilers - Part 6: Requirements for equipment for the boiler
Effective Date
19-Jan-2023

Buy Standard

prEN 12953-6:2023prEN 12953-6:2023
PreviousNext
Draft
prEN 12953-6:2023
English language
72 pages
sale 10% off
Preview
sale 10% off
Preview
e-Library read for
1 day

Standards Content (Sample)


SLOVENSKI STANDARD
oSIST prEN 12953-6:2023
01-junij-2023
Mnogovodni kotli - 6. del: Zahteve za opremo kotla
Shell Boilers - Part 6: Requirements for equipment for the boiler
Großwasserraumkessel - Teil 6: Anforderungen an die Ausrüstung für den Kessel
Chaudières à tube de fumée - Partie 6: Exigences pour l'équipement de la chaudière
Ta slovenski standard je istoveten z: prEN 12953-6
ICS:
27.060.30 Grelniki vode in prenosniki Boilers and heat exchangers
toplote
oSIST prEN 12953-6:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN 12953-6:2023
oSIST prEN 12953-6:2023
DRAFT
EUROPEAN STANDARD
prEN 12953-6
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2023
ICS Will supersede EN 12953-6:2011
English Version
Shell Boilers - Part 6: Requirements for equipment for the
boiler
Chaudières à tube de fumée - Partie 6: Exigences pour Großwasserraumkessel - Teil 6: Anforderungen an die
l'équipement de la chaudière Ausrüstung für den Kessel
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 269.
If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 12953-6:2023 E
worldwide for CEN national Members.

oSIST prEN 12953-6:2023
prEN 12953-6:2023 (E)
Contents
European foreword . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 General requirements for steam boilers and hot water boilers . 11
4.1 Safeguards (safety valves) against excessive pressure . 11
4.2 Materials for valves, fittings, flanges and bolting . 11
4.3 Protective systems . 11
4.4 Energy supply . 12
4.4.1 General . 12
4.4.2 Start up . 13
4.4.3 Normal shutdown . 13
4.5 Flue-gas heated economizers. 13
4.6 Drain and blowdown devices . 13
4.7 Water quality . 14
4.8 Water quality protection . 14
4.8.1 Conductivity in steam boiler water . 14
4.8.2 Condensate in steam boiler plants . 15
4.8.3 Water circulating system in hot water boiler plants . 15
4.8.4 Make-up water or feed water . 15
4.9 Furnace temperature monitoring system . 16
5 Special requirements for steam boilers . 17
5.1 Water level indication . 17
5.2 Steam pressure and temperature indication . 20
5.3 Valves for connections . 20
5.3.1 Steam outlets . 20
5.3.2 Feed pipe connections . 20
5.4 Feed water supply . 21
5.5 Feed water control . 21
5.6 Limiting and monitoring devices. 21
5.6.1 Low and high water level protection . 21
5.6.2 Pressure limitation . 22
5.6.3 Temperature limitation . 22
5.6.4 Flow monitoring device . 22
5.7 Electrically heated steam boilers . 22
6 Special requirements for hot water boilers . 23
6.1 Hot water generating systems . 23
6.2 Expansion and feed lines for open vented systems . 25
6.3 Water supply . 26
6.4 Water level indication . 26
6.5 Limiting and monitoring devices. 27
6.5.1 Low water protection . 27
6.5.2 Pressure and temperature limitation . 27
6.5.3 Flow monitoring device . 27
6.5.4 High water level protection . 28
6.6 Vent valves . 28
oSIST prEN 12953-6:2023
prEN 12953-6:2023 (E)
6.7 Pressure and temperature indication . 28
6.8 Electrically heated hot water boilers . 28
6.9 Parallel mode of operation of hot water boilers . 29
7 Operational aspects including maintenance and testing . 29
8 Alarms and monitoring from the boiler plant . 30
Annex A (informative) Typical examples of steam and hot water boiler systems . 31
A.1 General . 31
A.2 Key to figures. 31
A.3 Plant with open vented system . 33
A.4 Plant with closed system . 34
A.4.1 Hot water system with external pressure generating and expansion system . 34
A.4.2 Hot water system with internal pressure generating and expansion system - Steam
cushion in the boiler . 35
A.4.3 Steam boiler . 36
A.5 Superheater and economizer . 37
A.5.1 Superheater . 37
A.5.2 Economizer . 38
Annex B (informative) Dimensioning of expansion space . 39
B.1 General . 39
B.2 Required data . 39
B.3 Formulas for dimensioning . 40
Annex C (informative) Aspects of boiler operation . 42
C.1 General . 42
C.2 Maintenance . 42
C.3 Boiler operation and testing . 42
Annex D (informative) Drain and blowdown devices. 47
D.1 General . 47
D.2 Design of the drain and blowdown devices . 47
Annex E (informative) Alarms and monitoring from the boiler plant. 49
E.1 General . 49
E.2 Conditions for alarms and monitoring . 49
Annex F (normative) Requirements for monitoring devices .
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

This May Also Interest You

CEN
EN 12953-5:2020(Main)
Shell boilers - Part 5: Inspection during construction, documentation and marking of pressure parts of the boiler
SIST EN 12953-5:2020

This document specifies requirements for the inspection during and after construction, documentation and marking of shell boilers as defined in EN 12953-1.
NOTE   For other components, such as water tube walls, reference will be made to the EN 12952 series.

  • Standard
    32 pages
    English language
    sale 10% off
    e-Library read for
    1 day
  • Standard – translation
    35 pages
    Slovenian language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 12953-4:2018(Main)
Shell boilers - Part 4: Workmanship and construction of pressure parts of the boiler
SIST EN 12953-4:2018

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.

  • Standard
    35 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 12953-3:2016(Main)
Shell boilers - Part 3: Design and calculation for pressure parts
SIST EN 12953-3:2016

This Part of this European Standard specifies requirements for the design and calculation of pressure parts of shell boilers as defined in EN 12953 1.
NOTE   For other components such as economisers, superheaters, tube walls, headers, reference should be made to EN 12952 series.

  • Standard
    109 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 12953-2:2012(Main)
Shell boilers - Part 2: Materials for pressure parts of boilers and accessories
SIST EN 12953-2:2012

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.

  • Standard
    15 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 12953-1:2012(Main)
Shell boilers - Part 1: General
SIST EN 12953-1:2012

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.

  • Standard
    35 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 12953-13:2012(Main)
Shell boilers - Part 13: Operating instructions
SIST EN 12953-13:2012

This European Standard identifies the requirements for the manufacturer to provide operating instructions for pressure equipment supplied in accordance with EN 12953-1 when placed on the market.
NOTE   Where the equipment or assembly will reach the final user in a Member State which requires translation of operating instructions, manufacturers should be aware of this requirement.

  • Standard
    8 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 12953-6:2011(Main)
Shell Boilers - Part 6: Requirements for equipment for the boiler
SIST EN 12953-6:2011

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.

  • Standard
    52 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 12953-9:2007(Main)
Shell boilers - Part 9: Requirements for limiting devices of the boiler and accessories
SIST EN 12953-9:2007

This European Standard specifies requirements for limiters (or limiting devices) which are incorporated into safety systems for shell boilers as defined in EN 12953-1.
A limiter (or limiting device) can be either:
-   a safety accessory as defined in the Pressure Equipment Directive, Article 1, clause 2.1.3, and needs to include the safety logic and final actuator, or
-   one element of a safety system, for example, a self-monitoring water level sensor used as part of a safety accessory as defined in the Pressure Equipment Directive, Article 1, clause 2.1.3. The overall boiler protection function needs to be provided in association with additional safety logic (where appropriate) and a final actuator.
The design requirements and examination of functional capability for the limiters are covered in this European Standard.
For an explanation of the extent of the limiter (or limiting device) see Figure A.1.

  • Standard
    37 pages
    English language
    sale 10% off
    e-Library read for
    1 day
  • Standard
    37 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 12952-14:2004(Main)
Water-tube boilers and auxiliary installations - Part 14: Requirements for flue gas DENOX-systems using liquefied pressurized ammonia and ammonia water solution
SIST EN 12952-14:2004

This draft European Standard covers the safety requirements regarding the storage and use of:
-   liquefied pressurized ammonia for steam boiler plants;
-   liquid ammonia water solution for the reduction of NOx in the flue gas from boiler plants.
Annex A summarizes the operational aspects.

  • Standard
    25 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 12952-13:2003/A1:2003(Amendment)
Water-tube boilers and auxiliary installations - Part 13: Requirements for flue gas cleaning systems
SIST EN 12952-13:2003/A1:2004

This European Standard applies to the design of equipment for boiler plants to reduce air pollutants in the flue gases.
NOTE   The effects of explosion are not considered in this Part of the is European Standard.

  • Amendment
    4 pages
    English language
    sale 10% off
    e-Library read for
    1 day