EN 12953-8:2001
(Main)Shell boilers - Part 8: Requirements for safeguards against excessive pressure
Shell boilers - Part 8: Requirements for safeguards against excessive pressure
This Part of this European Standard specifies the requirements for safeguards against excessive pressure in shell boilers
as defined in EN 12953-1.
Großwasserraumkessel - Teil 8: Anforderungen an Sicherheitseinrichtungen gegen Drucküberschreitung
Diese Norm legt die Anforderungen an Sicherheitseinrichtungen gegen Drucküberschreitung für Großwasserraum-kessel, wie in EN 12953-1 definiert, fest.
Chaudières à tubes de fumée - Partie 8: Exigences pour la protection vis-à-vis des excès de pression
Cette partie de la norme européenne spécifie les exigences pour la protection vis-à-vis des excès de pression dans les chaudières à tubes de fumée telles que définies dans l'EN 12953-1.
Mnogovodni kotli - 8. del: Zahteve za opremo in varnostne naprave za preprečevanje prekoračitve tlaka
General Information
- Status
- Published
- Publication Date
- 20-Nov-2001
- Technical Committee
- CEN/TC 269 - Shell and water tube boilers
- Drafting Committee
- CEN/TC 269/WG 3 - Equipment
- Current Stage
- 9092 - Decision on results of review/2YR ENQ - revise - Review Enquiry
- Start Date
- 07-Jun-2022
- Completion Date
- 08-Oct-2025
Relations
- Corrected By
EN 12953-8:2001/AC:2002 - Shell boilers - Part 8: Requirements for safeguards against excessive pressure - Effective Date
- 22-Dec-2008
Overview
EN 12953-8:2001 is a European Standard developed by CEN that specifies the requirements for safeguards against excessive pressure in shell boilers. Shell boilers, commonly used in industrial and energy sectors, require stringent safety measures to prevent pressure-related hazards. This standard forms part of the EN 12953 series, which comprehensively covers aspects of shell boiler design, construction, and operation. Part 8 focuses specifically on safety pressure relief devices, ensuring the protection of boilers from dangerous overpressure conditions.
The standard applies to all shell boilers as defined in EN 12953-1 and is essential for manufacturers, operators, and safety professionals involved in boiler installation and maintenance within Europe. It supports compliance with the Pressure Equipment Directive (PED) 97/23/EC, aligning with EU safety regulations.
Key Topics
Safety Devices for Excessive Pressure: The standard mandates that all shell boilers, except open vented hot water boilers, must have at least one safety pressure relief device capable of handling the boiler's rated output. These devices must conform to prEN ISO 4126-1 for safety valves.
Discharge Capacity: Safety devices must have certified discharge capacities that meet or exceed the boiler’s maximum continuous steam output, ensuring safe pressure relief without exceeding a 10% increase over the maximum allowable pressure.
Set Pressure Requirements: Safety devices are required to operate at or below the maximum allowable pressure, with provisions for multiple devices allowing progressive opening to enhance safety responsiveness.
Installation Guidelines:
- Inlet pipes to safety valves must have a cross-section no smaller than the valve inlet, with minimal pressure loss.
- Safety valves should be installed vertically with short, straight inlet piping.
- Discharge lines must be adequately sized to prevent back pressure that could impair valve functioning.
- External factors such as weather, vibrations, and freezing must be considered to protect safety devices.
Special Boiler Components:
- Superheaters and economizers require additional safety devices under certain conditions, with capacity requirements defined to ensure overall system safety.
Testing and Operation: The standard requires hot tests for steam boilers and mandates that safety valves be manually testable below set pressure to ensure operability.
Applications
EN 12953-8:2001 is critical for industries relying on shell boilers, including:
- Power Generation: Ensuring the safe operation of steam boilers used for electricity production.
- Industrial Manufacturing: Protecting boilers in chemical plants, refineries, and food processing factories.
- Heating Systems: Applicable to hot water generators used in district heating networks or large-scale HVAC installations.
- Boiler Fabrication and Maintenance: Guiding manufacturers and service providers in designing, installing, and maintaining effective safeguard systems against excessive pressure.
- Regulatory Compliance: Assisting organizations to meet European legal requirements related to pressure equipment safety under the Pressure Equipment Directive.
Related Standards
- EN 12953-1: General requirements and definitions for shell boilers.
- EN 12953-6: Requirements for equipment fitted to boilers.
- prEN ISO 4126-1: Safety devices for protection against excessive pressure, focusing on safety valves.
- EN 12953 Series: Other parts covering design, materials, inspection, firing systems, and operational guidelines for shell boilers.
By adhering to EN 12953-8:2001, manufacturers and operators can ensure that their shell boilers are equipped with reliable, compliant safeguards, protecting infrastructure, personnel, and the environment from the risks of excessive pressure.
Keywords: EN 12953-8, shell boilers, excessive pressure safeguards, safety pressure relief devices, boiler safety standards, European boiler regulations, pressure equipment directive, boiler discharge capacity, safety valve installation, industrial boiler safety.
Frequently Asked Questions
EN 12953-8:2001 is a standard published by the European Committee for Standardization (CEN). Its full title is "Shell boilers - Part 8: Requirements for safeguards against excessive pressure". This standard covers: This Part of this European Standard specifies the requirements for safeguards against excessive pressure in shell boilers as defined in EN 12953-1.
This Part of this European Standard specifies the requirements for safeguards against excessive pressure in shell boilers as defined in EN 12953-1.
EN 12953-8:2001 is classified under the following ICS (International Classification for Standards) categories: 27.060.30 - Boilers and heat exchangers; 27.100 - Power stations in general. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 12953-8:2001 has the following relationships with other standards: It is inter standard links to EN 12953-8:2001/AC:2002. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 12953-8:2001 is associated with the following European legislation: EU Directives/Regulations: 2014/68/EU, 97/23/EC; Standardization Mandates: M/071. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
You can purchase EN 12953-8:2001 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.HYDQMHGroßwasserraumkessel - Teil 8: Anforderungen an Sicherheitseinrichtungen gegen DrucküberschreitungChaudieres a tubes de fumée - Partie 8: Exigences pour la protection vis-a-vis des exces de pressionShell boilers - Part 8: Requirements for safeguards against excessive pressure27.060.30Grelniki vode in prenosniki toploteBoilers and heat exchangers13.240Varstvo pred previsokim tlakomProtection against excessive pressureICS:Ta slovenski standard je istoveten z:EN 12953-8:2001SIST EN 12953-8:2002en01-maj-2002SIST EN 12953-8:2002SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12953-8November 2001ICS 27.060.30; 27.100English versionShell boilers - Part 8: Requirements for safeguards againstexcessive pressureChaudières à tubes de fumée - Partie 8: Exigences pour laprotection vis-à-vis des excès de pressionGroßwasserraumkessel - Teil 8: Anforderungen anSicherheitseinrichtungen gegen DrucküberschreitungThis European Standard was approved by CEN on 7 September 2001.CEN members are bound to comply 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 concerning such nationalstandards may be obtained on application to the 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 translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12953-8:2001 ESIST EN 12953-8:2002
(informative)
Clauses of this European Standard addressingessential safety requirements or other provisions of the Pressure EquipmentDirective.72SIST EN 12953-8:2002
ScopeThis Part of this European Standard specifies the requirements for safeguards against excessive pressure in shell boilersas defined in EN 12953-1.2
Normative referencesThis European Standard incorporates, by dated or undated reference, provisions from other publications. These normativereferences are cited at the appropriate places in the text and, the publications are listed hereafter. For dated references,subsequent amendments to or revisions of any of these publications apply to this European Standard only whenincorporated in it by amendment or revision. For undated references, the latest edition of the publication referred to applies(including amedments).EN 12953-1,
Shell boilers — Part 1: General.EN 12953-6,
Shell boilers — Part 6: Requirements for equipment for the boiler.prEN ISO 4126-1,
Safety devices for protection against excessive pressure — Part 1: Safety valves.3
Terms and definitionsFor the purposes of this European Standard the terms and definitions given in EN 12953-1 and EN 12953-6 apply.4
Requirements4.1
General requirements for safeguards (safety pressure relief devices)4.1.1
Boilers, with the exception of open vented hot water boilers, shall have at least one safety device sized for therated output (see 4.2) of the boiler which shall ensure against excessive pressure. The device shall conform toprEN ISO 4126-1. For steam boilers, a hot test shall additionally be performed on the boil
...
SLOVENSKI STANDARD
01-maj-2002
Mnogovodni kotli - 8. del: Zahteve za opremo in varnostne naprave za
preprečevanje prekoračitve tlaka
Shell boilers - Part 8: Requirements for safeguards against excessive pressure
Großwasserraumkessel - Teil 8: Anforderungen an Sicherheitseinrichtungen gegen
Drucküberschreitung
Chaudieres a tubes de fumée - Partie 8: Exigences pour la protection vis-a-vis des exces
de pression
Ta slovenski standard je istoveten z: EN 12953-8:2001
ICS:
13.240 Varstvo pred previsokim Protection against excessive
tlakom pressure
27.060.30 Grelniki vode in prenosniki Boilers and heat exchangers
toplote
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 12953-8
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2001
ICS 27.060.30; 27.100
English version
Shell boilers - Part 8: Requirements for safeguards against
excessive pressure
Chaudières à tubes de fumée - Partie 8: Exigences pour la Großwasserraumkessel - Teil 8: Anforderungen an
protection vis-à-vis des excès de pression Sicherheitseinrichtungen gegen Drucküberschreitung
This European Standard was approved by CEN on 7 September 2001.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2001 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12953-8:2001 E
worldwide for CEN national Members.
Contents
Page
Foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Requirements . 4
4.1 General requirements for safeguards (safety pressure relief devices) . . . 4
4.2 Discharge capacity . 5
4.3Set pressures . 5
4.4 Cross-sections and pressure losses in the inlet pipe of safety valves
in accordance with prEN ISO 4126-1 . 5
4.5Discharge lines . 6
Annex ZA (informative) Clauses of this European Standard addressing
essential safety requirements or other provisions of the Pressure Equipment
Directive . 7
Foreword
This European Standard has been prepared by Technical Committee CEN/TC 269 "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 May 2002, and conflicting national standards shall be withdrawn at the latest by May 2002.
This European Standard has been prepared under a mandate given to CEN by the European Commission and the
European 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 standard.
The European Standard series 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 equipment for the boiler
Part 7: Requirements for firing systems for liquid and gaseous fuels for the boiler
Part 8: Requirements for safeguards against excessive pressure
Part 9: Requirements for limiting devices, and safety circuits of the boiler and accessories
Part 10: Requirements for boiler feedwater and boiler water quality
Part 11: Acceptance tests
Part 12: Requirements for firing systems for solid fuels for the boiler
Part 13: Operating instructions
Part 14: Guidline for the involvement of an inspection body independent of the manufacturer (TR)
Although these Parts may be obtained separately, it should be recognised that the Parts are inter-dependent. As such, the
design and manufacture of shell boilers requires the application of more than one Part in order for the requirements of the
European Standard to be satisfactorily fulfilled.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are
bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany,
Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United
Kingdom.
1 Scope
This Part of this European Standard specifies the requirements for safeguards against excessive pressure in shell boilers
as defined in EN 12953-1.
2 Normative references
This European Standard incorporates, by dated or undated reference, provisions from other publications. These normative
references are cited at the appropriate places in the text and, the publications are listed hereafter. For dated references,
subsequent amendments to or revisions of any of these publications apply to this European Standard only when
incorporated in it by amendment or revision. For undated references, the latest edition of the publication referred to applies
(including amedments).
EN 12953-1, Shell boilers — Part 1: General.
EN 12953-6, Shell boilers — Part 6: Requirements for equipment for the boiler.
prEN ISO 4126-1, Safety devices for protection against excessive pressure — Part 1: Safety valves.
3 Terms and definitions
For the purposes of this European Standard the terms and definitions given in EN 12953-1 and EN 12953-6 apply.
4 Requirements
4.1 General requirements for safeguards (safety pressure relief devices)
4.1.1 Boilers, with the exception of open vented hot water boilers, shall have at least one safety device sized for the
rated output (see 4.2) of the boiler which shall ensure against excessive pressure. The
...
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