SIST EN 50156-2:2015

Electrical equipment for furnaces and ancillary equipment - Part 2: Requirements for design, development and type approval of safety devices and subsystems

This part of EN 50156 applies to the requirements for design, development and approval of safetyrelevant
equipment for the safety related system for furnaces that are operated with solid, liquid or
gaseous fuels and their ancillary equipment.
This part of EN 50156 specifies the requirements for safety-related equipment that is necessary to
meet the safety conditions of furnaces, to reduce the hazards of combustion and to protect the heated
systems from damage e.g. by overheating. Subsystems and devices of other technologies, which are
part of the safety-related system (see EN 50156-1:2015, 3.38), are covered by this part of EN 50156.
This part of EN 50156 sets out special requirements for design, development and approval of safety
devices and subsystems to satisfy the requirements of EN 50156-1:2015, Clause 10 “Additional
requirements for the application of a safety-related system”.

Elektrische Ausrüstung von Feuerungsanlagen - Teil 2: Bestimmungen für den Entwurf, die Entwicklung und die Baumusterprüfung von Sicherheitsbauteilen und Teilsystemen

Equipements électriques d'installation de chaudière - Partie 2: Règles pour la dessin, développement et essai de type d’ élément sécurité et sous-système

Električna oprema za peči in pomožno opremo - 2. del: Zahteve za snovanje, razvoj in odobravanje tipa varnostnih naprav in podsistemov

Ta del standarda EN 50156 se uporablja za zahteve za snovanje, razvoj in odobravanje varnostne opreme za z varnostjo povezani sistem za peči, ki delujejo na trdna, tekoča ali plinasta goriva, ter njihovo pomožno opremo.
Ta del standarda EN 50156 določa zahteve za z varnostjo povezane opreme, potrebne za izpolnjevanje varnostnih pogojev peči, da bi se zmanjšale nevarnosti zgorevanja in segreti sistemi zavarovali pred poškodbami, npr. zaradi pregrevanja. Podsistemi in naprave drugih tehnologij, ki so del z varnostjo povezanega sistema (glej EN 50156-1:2015, 3.38), so obravnavani v tem delu standarda EN 50156. Ta del standarda EN 50156 določa posebne zahteve za zasnovo, razvoj in odobritev varnostnih naprav in podsistemov za izpolnitev zahtev iz točke 10 standarda EN 50156-1:2015 »Dodatne zahteve za uporabo sistema, povezanega z varnostjo«.

General Information

• Status: Published
• Public Enquiry End Date: 24-Dec-2012
• Publication Date: 13-Aug-2015
• ICS: 25.180.10 - Electric furnaces
• Technical Committee: I09 - Imaginarni 09
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 27-Jul-2015
• Due Date: 01-Oct-2015
• Completion Date: 14-Aug-2015
• Directive: 2006/95/EC - Directive 2006/95/EC of the European Parliament and of the Council of 12 December 2006 on the harmonisation of the laws of Member States relating to electrical equipment designed for use within certain voltage limits (codified version)
• Directive: 2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
• 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
• Ref Project: EN 50156-2:2015 - Electrical equipment for furnaces and ancillary equipment - Part 2: Requirements for design, development and type approval of safety devices and subsystems

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 50156-2:2015
01-september-2015
(OHNWULþQDRSUHPD]DSHþLLQSRPRåQRRSUHPRGHO=DKWHYH]DVQRYDQMHUD]YRM
LQRGREUDYDQMHWLSDYDUQRVWQLKQDSUDYLQSRGVLVWHPRY
Electrical equipment for furnaces and ancillary equipment - Part 2: Requirements for
design, development and type approval of safety devices and subsystems
Elektrische Ausrüstung von Feuerungsanlagen - Teil 2: Bestimmungen für den Entwurf,
die Entwicklung und die Baumusterprüfung von Sicherheitsbauteilen und Teilsystemen
Equipements électriques d'installation de chaudière - Partie 2: Règles pour la dessin,
développement et essai de type d’ élément sécurité et sous-système
Ta slovenski standard je istoveten z: EN 50156-2:2015
ICS:
25.180.10 (OHNWULþQHSHþL Electric furnaces
SIST EN 50156-2:2015 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

SIST EN 50156-2:2015

---------------------- Page: 2 ----------------------

SIST EN 50156-2:2015


EUROPEAN STANDARD EN 50156-2

NORME EUROPÉENNE

EUROPÄISCHE NORM
July 2015
ICS 27.060.01

English Version
Electrical equipment for furnaces and ancillary equipment - Part
2: Requirements for design, development and type approval of
safety devices and subsystems
Equipements électriques d'installation de chaudière - Partie Elektrische Ausrüstung von Feuerungsanlagen - Teil 2:
2: Règles pour la dessin, développement et essai de type d' Bestimmungen für den Entwurf, die Entwicklung und die
élément sécurité et sous-système Baumusterprüfung von Sicherheitsbauteilen und
Teilsystemen
This European Standard was approved by CENELEC on 2015-01-26. CENELEC 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 CENELEC 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 CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.


European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 50156-2:2015 E

---------------------- Page: 3 ----------------------

SIST EN 50156-2:2015
EN 50156-2:2015 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Requirements for safety devices and subsystems of safety-related systems . 6
4.1 General . 6
4.2 Requirements for safety devices and subsystems in electrical/electronic/
programmable electronic systems . 7
4.2.1 General . 7
4.2.2 Type approval in accordance with product standards . 7
4.2.3 Type approval following the requirements of EN 61508 . 7
4.3 Requirements for safety devices and subsystems of other technologies . 8
4.3.1 General . 8
4.3.2 Type approval by product standards . 8
4.3.3 Type approval by fault assessment . 8
4.3.4 Quality assurance . 9
4.3.5 Quantification . 9
4.3.6 Recurring functional testing . 9
4.3.7 Operating instructions .10
Annex A (normative) Proven in use for subsystems and devices of other technologies .11
Annex B (informative) Aspects with influence on functional safety .13
Annex C (informative) Summary of the characteristic data for use of a subsystem or
device in safety-related systems .14
C.1 Classification of the product .14
C.2 Characteristic data according to EN 61508, Parts 1 to 7:.14
C.2.1 Data for use of the product as a subsystem or device in safety functions .14
C.2.2 Additional data for use of the product as a component in safety functions .14
Bibliography .16

2

---------------------- Page: 4 ----------------------

SIST EN 50156-2:2015
EN 50156-2:2015 (E)


European foreword
This document (EN 50156-2:2015) has been prepared by CLC/BTTF 132-2 “Revision of EN 50156
'Electrical equipment for furnaces and ancillary equipment'”.
The following dates are fixed:
• latest date by which this document has to be (dop) 2016-01-26
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) 2018-01-26
conflicting with this document have to
be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
This standard covers the Principle Elements of the Safety Objectives for Electrical Equipment
Designed for Use within Certain Voltage Limits (LVD - 2006/95/EC).
This European Standard is the second part of a series of European Standards that specify the
requirements for equipment of safety functions for furnaces, especially safety related systems to
protect personnel, the furnace with ancillary equipment against hazards related to heat generation, the
heated system and to operate reliably during normal conditions, and abnormal conditions that can be
foreseen.
EN 50156, Electrical equipment for furnaces and ancillary equipment, consists of the following parts:
• Part 1: Requirements for application design and installation;
• Part 2: Requirements for design, development and type approval of safety devices and
subsystems;
1)
• Part 3: Requirements for plant-specific tests of safety-related equipment .
This European Standard is based on EN 61508:2010, Functional safety – Safety-related systems,
Parts 1 to 7 as a basic safety standard.
———————
1) In preparation.
3

---------------------- Page: 5 ----------------------

SIST EN 50156-2:2015
EN 50156-2:2015 (E)
Introduction
This part of EN 50156 sets out the requirements and recommendations for design, development and
type approval of safety devices and subsystems to be applied to protect personnel, property and
environment against the hazards of furnaces with ancillary equipment and the systems heated by the
thermal energy released in the furnace. The operating conditions of the furnace, the hazards of
combustion and the safety of the heated system are considered.
The safety requirements for all stages of the life-cycle of a particular plant, proof of fulfilment of the
plant-specific safety-requirements, are defined in Part 1 of EN 50156. The requirements for plant
specific tests during implementation, operation and maintenance are defined in Part 3 of EN 50156.
The requirements for the application of safety-related systems are specified in EN 50156-1:2015,
Clause 10. The rating of necessary safety integrity levels, as specified in EN 50156-1:2015, 10.4, is
based on EN 61508-1.
For the plant-specific implementation of safety-related systems, it is necessary to organize
management of functional safety and to satisfy safety life-cycle requirements.
4

---------------------- Page: 6 ----------------------

SIST EN 50156-2:2015
EN 50156-2:2015 (E)


1 Scope
This part of EN 50156 applies to the requirements for design, development and approval of safety-
relevant equipment for the safety related system for furnaces that are operated with solid, liquid or
gaseous fuels and their ancillary equipment.
This part of EN 50156 specifies the requirements for safety-related equipment that is necessary to
meet the safety conditions of furnaces, to reduce the hazards of combustion and to protect the heated
systems from damage e.g. by overheating. Subsystems and devices of other technologies, which are
part of the safety-related system (see EN 50156-1:2015, 3.38), are covered by this part of EN 50156.
This part of EN 50156 sets out special requirements for design, development and approval of safety
devices and subsystems to satisfy the requirements of EN 50156-1:2015, Clause 10 “Additional
requirements for the application of a safety-related system”.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
EN 161:2011+A3:2013, Automatic shut-off valves for gas burners and gas appliances
EN 267:2009+A1:2011, Automatic forced draught burners for liquid fuels
EN 298:2012, Automatic burner control systems for burners and appliances burning gaseous or liquid
fuels
EN 676:2003+A2:2008, Automatic forced draught burners for gaseous fuels
EN 1643:2014, Safety and control devices for gas burners and gas burning appliances - Valve proving
systems for automatic shut-off valves
EN 1854:2010, Pressure sensing devices for gas burners and gas burning appliances
EN 12067-2:2004, Gas/air ratio controls for gas burners and gas burning appliances - Part 2:
Electronic types
EN 12952-11:2007, Water-tube boilers and auxiliary installations - Part 11: Requirements for limiting
devices of the boiler and accessories
EN 12953-9:2007, Shell boilers - Part 9: Requirements for limiting devices of the boiler and
accessories
EN 13611:2007+A2:2011, Safety and control devices for gas burners and gas burning appliances -
General requirements
EN 16340:2014, Safety and control devices for burners and appliances burning gaseous or liquid fuels
- Combustion product sensing devices
EN 50156-1:2015, Electrical equipment for furnaces and ancillary equipment – Part 1: Requirements
for application design and installation
EN 60730-1:2011, Automatic electrical controls for household and similar use - Part 1: General
requirements (IEC 60730-1:2010)
5

---------------------- Page: 7 ----------------------

SIST EN 50156-2:2015
EN 50156-2:2015 (E)
EN 60812:2006, Analysis techniques for system reliability - Procedure for failure mode and effects
analysis (FMEA) (IEC 60812:2006)
EN 60947-2:2006, Low-voltage switchgear and controlgear - Part 2: Circuit-breakers (IEC 60947-
2:2006)
EN 61010-1:2010, Safety requirements for electrical equipment for measurement, control, and
laboratory use - Part 1: General requirements (IEC 61010-1:2010+corr 2011)
EN 61131-2:2007, Programmable controllers - Part 2: Equipment requirements and tests (IEC 61131-
2:2007)
EN 61508-1:2010, Functional safety of electrical/electronic/programmable electronic safety-related
systems - Part 1: General requirements (IEC 61508-1:2010)
EN 61508-2:2010, Functional safety of electrical/electronic/programmable electronic safety-related
systems - Part 2: Requirements for electrical/electronic/programmable electronic safety-related
systems (IEC 61508-2:2010)
EN 61508-3:2010, Functional safety of electrical/electronic/programmable electronic safety-related
systems - Part 3: Software requirements (IEC 61508-3:2010)
EN 61508-4:2010, Functional safety of electrical/electronic/programmable electronic safety-related
systems - Part 4: Definitions and abbreviations (IEC 61508-4:2010)
EN 61508-5:2010, Functional safety of electrical/electronic/programmable electronic safety-related
systems - Part 5: Examples of methods for the determination of safety integrity levels (IEC 61508-
5:2010)
EN 61508-6:2010, Functional safety of electrical/electronic/programmable electronic safety-related
systems - Part 6: Guidelines on the application of IEC 61508-2 and IEC 61508-3 (IEC 61508-6:2010)
EN 61508-7:2010, Functional safety of electrical/electronic/programmable electronic safety-related
systems - Part 7: Overview of techniques and measures (IEC 61508-7:2010)
EN 61800-5-2:2007, Adjustable speed electrical power drive systems - Part 5-2: Safety requirements -
Functional (IEC 61800-5-2:2007)
EN ISO 23553-1:2014, Safety and control devices for oil burners and oil-burning appliances -
Particular requirements - Part 1: Automatic and semi-automatic valves (ISO 23553-1:2014)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 50156-1:2015 apply.
4 Requirements for safety devices and subsystems of safety-related systems
4.1 General
The qualification and conformity for subsystems or devices as E/E/PES is defined in 4.2 and for
subsystems and devices of other technology in 4.3
Safety functions of the safety related system, such as flame monitoring, pre-purge, air-gas ratio
control, fuel safety shut-off-valves etc. shall fulfil the requirements of the relevant product standards
(see 4.2.2 and 4.3.2). When thereof are deviations (e.g. concerning process technical reasons,
6

---------------------- Page: 8 ----------------------

SIST EN 50156-2:2015
EN
...