EN 12952-11:2007

Water-tube boilers and auxiliary installations - Part 11: Requirements for limiting devices of the boiler and accessories

This European Standard specifies requirements for limiters (or limiting devices) which are incorporated into safety systems for water-tube boilers as defined in EN 12952-1.
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 shall 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.

Wasserrohrkessel und Anlagenkomponenten - Teil 11: Anforderungen an Begrenzungseinrichtungen an Kessel und Zubehör

Diese Europäische Norm legt die Anforderungen an Begrenzer (oder Begrenzungseinrichtungen) fest, die in Sicherheitssystemen für Wasserrohrkessel nach EN 12952-1 eingebaut sind.
Ein Begrenzer (oder eine Begrenzungseinrichtung) kann entweder
   ein Ausrüstungsteil mit Sicherheitsfunktion sein, wie in der Druckgeräterichtlinie, Artikel 1, 2.1.3, festgelegt, das mit einer Sicherheitskette und einem Stellglied versehen ist, oder
   ein Element eines Sicherheitssystems sein, z. B. ein selbstüberwachender Wasserstandfühler als Teil eines Ausrüstungsteils mit Sicherheitsfunktion nach der Festlegung in der Druckgeräterichtlinie, Artikel 1, 2.1.3. Die Schutzfunktion für den gesamten Kessel wird mit einer zusätzlichen Sicherheitskette (wo angemessen) und
einem Stellglied abgedeckt.
Diese Europäische Norm umfasst die Anforderungen an die Ausführung und die Prüfung der Funktionssicherheit der Begrenzer.
Der Funktionsumfang des Begrenzers (oder der Begrenzungseinrichtung) ist in Bild A.1 verdeutlicht.

Chaudières à tubes d'eau et installations auxiliaires - Partie 11: Exigences pour les dispositifs de limitation de la chaudière et de ses accessoires

Vodocevni kotli in pomožne napeljave - 11. del: Zahteve za omejilne naprave kotla in opremo

General Information

• Status: Published
• Publication Date: 03-Jul-2007
• ICS: 27.040 - Gas and steam turbines. Steam engines
• Technical Committee: CEN/TC 269 - Shell and water tube boilers
• Drafting Committee: CEN/TC 269/WG 3 - Equipment
• Current Stage: 9060 - Closure of 2 Year Review Enquiry - Review Enquiry
• Start Date: 02-Dec-2021
• Completion Date: 02-Dec-2021
• 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
• Directive: 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 12952-11:2007 - Water-tube boilers and auxiliary installations - Part 11: Requirements for limiting devices of the boiler and accessories

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Vodocevni kotli in pomožne napeljave - 11. del: Zahteve za omejevalne naprave kotla in opremeWasserrohrkessel und Anlagekomponenten - Teil 11: Anforderungen an Begrenzungseinrichtungen an Kessel und ZubehörChaudieres a tubes d'eau et installations auxiliaires - Partie 11: Exigences pour les dispositifs de limitation de la chaudiere et de ses accessoiresWater-tube boilers and auxiliary installations - Part 11: Requirements for limiting devices of the boiler and accessories27.060.30Grelniki vode in prenosniki toploteBoilers and heat exchangersICS:Ta slovenski standard je istoveten z:EN 12952-11:2007SIST EN 12952-11:2007en,fr,de01-september-2007SIST EN 12952-11:2007SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12952-11July 2007ICS 27.040 English VersionWater-tube boilers and auxiliary installations - Part 11:Requirements for limiting devices of the boiler and accessoriesChaudières à tubes d'eau et installations auxiliaires - Partie11: Exigences pour les dispositifs de limitation de lachaudière et de ses accessoiresWasserrohrkessel und Anlagekomponenten - Teil 11:Anforderungen an Begrenzungseinrichtungen an Kesselund ZubehörThis European Standard was approved by CEN on 26 May 2007.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 CEN 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 CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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 STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2007 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12952-11:2007: ESIST EN 12952-11:2007

Limiting device.25 Annex B (informative)
Example of an examination plan.26 Annex C (informative)
Marking of limiters.28 Annex D (normative)
Immunity against electrical and electromagnetic influences —
Requirements and testing.31 Annex ZA (informative)
Relationship between this European Standard and the Essential
Requirements of EU Directive 97/23/EC.35 Bibliography.36
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