EN 12952-8:2022
(Main)Water-tube boilers and auxiliary installations - Part 8: Requirements for firing systems for liquid and gaseous fuels for the boiler
Water-tube boilers and auxiliary installations - Part 8: Requirements for firing systems for liquid and gaseous fuels for the boiler
1.1 Firing systems
This document specifies requirements for liquid and gaseous fuel firing systems of steam boilers and hot water generators as defined in EN 12952-1:2015.
These requirements also apply to firing systems of chemical recovery boilers (black liquor boilers) with the additions and amendments specified in Annex A.
These requirements also apply to gas turbines in combination with fired/unfired heat recovery steam generators with the additions and amendments specified in Annex B.
NOTE 1 This document is not applicable to coil type boilers (flash boilers/small boilers) that use burners in accordance with EN 12953-7 for single burner installations.
NOTE 2 This document is not applicable to the storage of liquid fuels and to transfer stations of long-distance gas pipelines.
1.2 Fuels
This document specifies requirements which cover the use of liquid and gaseous fuels as defined in this document. Fuels deviating from standardized commercially available types can require additional or alternative safety measures. For black liquor these safety measures are given in Annex A.
Wasserrohrkessel und Anlagenkomponenten - Teil 8: Anforderungen an Feuerungsanlagen für flüssige und gasförmige Brennstoffe für den Kessel
1.1 Feuerungsanlagen
Dieses Dokument legt Anforderungen an Feuerungsanlagen für flüssige und gasförmige Brennstoffe von Dampf- und Heißwassererzeugungsanlagen nach EN 12952 1:2015 fest.
Diese Anforderungen gelten für Feuerungsanlagen von Laugenrückgewinnungskesseln (Schwarzlaugen-kesseln) mit den in Anhang A aufgeführten Zusätzen und Ergänzungen.
Diese Anforderungen gelten auch für Gasturbinen in Kombination mit befeuerten/unbefeuerten Wärmerückgewinnungsdampferzeugern, mit den in Anhang B festgelegten Zusätzen und Ergänzungen.
ANMERKUNG 1 Dieses Dokument gilt nicht für Spiralrohrkessel (Schnellverdampfer/kleine Kessel), für die Öl- und Gasfeuerungsanlagen nach EN 12953 7 für Anlagen mit Einzelbrenner verwendet werden.
ANMERKUNG 2 Dieses Dokument gilt nicht für die Lagerung flüssiger Brennstoffe und für Übergabestationen für Ferngas.
1.2 Brennstoffe
Die in diesem Dokument festgelegten Anforderungen gelten für flüssige und gasförmige Brennstoffe nach diesem Dokument. Für nicht normgerechte handelsübliche flüssige oder gasförmige Brennstoffe können zusätzliche oder alternative Sicherheitsmaßnahmen notwendig werden. Für Schwarzlauge sind diese Sicherheitsmaßnahmen in Anhang A aufgeführt.
Chaudières à tubes d'eau et installations auxiliaires - Partie 8 : Exigences pour les équipements de chauffe pour combustibles gazeux et liquides de la chaudière
1.1 Équipements de chauffe
Le présent document spécifie les prescriptions relatives aux équipements de chauffe pour combustibles liquides et gazeux pour les chaudières à vapeur et les générateurs d'eau surchauffée définis dans l’EN 12952 1:2015.
Ces exigences s’appliquent aussi aux équipements de chauffe des chaudières de récupération chimique (chaudières à liqueur noire) avec les compléments et les amendements spécifiés dans l’Annexe A.
Ces prescriptions s'appliquent également aux turbines à gaz combinées à des générateurs de vapeur à récupération de chaleur avec ou sans combustion, avec les ajouts et modifications précisés à l'Annexe B.
NOTE 1 Ce document ne s‘applique pas aux chaudières à serpentins (chaudières à vaporisation instantanée/chaudières à faible volume) utilisant des brûleurs conformément à l’EN 12953 7 pour les installations à brûleur unique.
NOTE 2 Ce document ne s‘applique pas au stockage de combustibles liquides et aux postes de livraison équipés de tuyauteries de transport de très grande longueur.
1.2 Combustibles
Le présent document spécifie les exigences qui concernent l’utilisation de combustibles liquides et gazeux tels que définis dans ce document. Les combustibles s'écartant des types normalisés disponibles dans le commerce peuvent nécessiter des mesures de sécurité supplémentaires ou alternatives. Pour la liqueur noire, ces mesures de sécurité sont données en Annexe A.
Vodocevni kotli in pomožne napeljave - 8. del: Zahteve za gorilnike kotlov na tekoča in plinasta goriva
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2022
Nadomešča:
SIST EN 12952-8:2002
Vodocevni kotli in pomožne napeljave - 8. del: Zahteve za gorilnike kotlov na
tekoča in plinasta goriva
Water-tube boilers and auxiliary installations - Part 8: Requirements for firing systems for
liquid and gaseous fuels for the boiler
Wasserrohrkessel und Anlagenkomponenten - Teil 8: Anforderungen an
Feuerungsanlagen für flüssige und gasförmige Brennstoffe für den Kessel
Chaudières à tubes d'eau et installations auxiliaires - Partie 8 : Exigences pour les
équipements de chauffe pour combustibles gazeux et liquides de la chaudière
Ta slovenski standard je istoveten z: EN 12952-8:2022
ICS:
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.
EN 12952-8
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2022
EUROPÄISCHE NORM
ICS 27.040 Supersedes EN 12952-8:2002
English Version
Water-tube boilers and auxiliary installations - Part 8:
Requirements for firing systems for liquid and gaseous
fuels for the boiler
Chaudières à tubes d'eau et installations auxiliaires - Wasserrohrkessel und Anlagenkomponenten - Teil 8:
Partie 8 : Exigences pour les équipements de chauffe Anforderungen an Feuerungsanlagen für flüssige und
pour combustibles gazeux et liquides de la chaudière gasförmige Brennstoffe für den Kessel
This European Standard was approved by CEN on 15 August 2022.
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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye 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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12952-8:2022 E
worldwide for CEN national Members.
Contents Page
European foreword . 4
1 Scope . 6
1.1 Firing systems . 6
1.2 Fuels . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Fuel supply . 11
4.1 General. 11
4.2 Fuel transfer and preparation . 11
4.3 Fuel lines . 12
4.4 Safety shut-off devices (Safety trip valves) . 13
5 General. 15
5.1 Air supply . 15
5.2 Air/fuel ratio . 16
5.3 Flue gas discharge . 16
6 Firing system . 17
6.1 Burners . 17
6.2 Flue gas recirculation . 18
6.3 Control and monitoring . 18
6.4 Electrical equipment. 19
6.5 Safety precautions . 19
6.6 Common stack for several firing systems . 20
7 Operating manual . 20
8 Particular requirements for firing systems burning gaseous fuels with high relative
density . 20
8.1 Main firing systems . 20
8.2 Ignition burner systems . 21
Annex A (normative) Chemical recovery boiler (black liquor boiler) . 22
A.1 General. 22
A.2 Additional requirements for the firing system for black liquor in the chemical
recovery boiler . 22
A.3 Special requirements for oil- or gas firing for chemical recovery boilers . 23
Annex B (normative) Gas turbines in combination with heat recovery steam generators . 25
B.1 General. 25
B.2 Additional requirements for gas turbines in combination with heat recovery steam
generators . 25
Annex C (informative) Operational requirements for permanent supervised firing systems
for liquid and gaseous fuels . 27
C.1 General. 27
C.2 Operation . 27
C.3 Fuel preparation . 27
C.4 Safety shutoff devices . 27
C.5 Air/fuel ratio . 27
C.6 Modification of firing, burner or air/fuel ratio setting . 27
C.7 Control and monitoring . 28
C.8 Emergency operation . 28
C.9 Operating and maintenance instructions . 28
C.10 Firing systems burning gaseous fuels with high relative density . 28
Annex D (informative) Significant technical changes between this document and the
previous edition . 30
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2014/68/EU aimed to be covered . 31
Bibliography . 33
European foreword
This document (EN 12952-8:2022) 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 April 2023, and conflicting national standards shall be
withdrawn at the latest by April 2023.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 12952-8:2002.
The technical modifications in comparison with the previous edition are listed in Annex D.
The EN 12952 series “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.
• Part 18: Operating instructions
Although these parts can 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 document to be satisfactorily fulfilled.
This document has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association, and supports essential requirements of
EU Directive(s) / Regulation(s).
For relationship with EU Directive(s) / Regulation(s), see informative Annex ZA, which is an integral part
of this document.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations 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, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the United
Kingdom.
1 Scope
1.1 Firing systems
This document specifies requirements for liquid and gaseous fuel firing systems of steam boilers and hot
water generators as defined in EN 12952-1:2015.
These requirements also apply to firing systems of chemical recovery boilers (black liquor boilers) with
the additions and amendments specified in Annex A.
These requirements als
...
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