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BS EN 746-2:2010

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Industrial thermoprocessing equipment Safety requirements for combustion and fuel handling systems
Available format(s)

Hardcopy , PDF

Superseded date

01-04-2024

Language(s)

English

Published date

06-30-2010

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 List of hazards
5 Safety requirements, measures and verification means
6 Verification of the safety requirements and/or measures
7 Information for Use
Annex A (informative) - Typical Examples of IThE, Fuels and
        Burners
Annex B (informative) - Technical terms
Annex C (informative) - Typical examples of piping and
        components
Annex D (informative) - Methods for burner start-up
Annex E (normative) - Maximum allowable pressure
Annex ZA (informative) - Relationship between this
         European Standard and the Essential Requirements
         of EU Directive 2006/42/EC
Bibliography

Describes, in conjunction with EN 746-1, defines safety requirements for single and multiple burners that are part of Industrial Thermoprocessing Equipment.

This part of EN 746 together with EN 746-1 specifies safety requirements for single and multiple burners that are part of Industrial Thermoprocessing Equipment. (In this standard referred to as IThE).

This document deals with significant hazards, hazardous situations and events relevant to combustion and fuel handling systems that are part of IThE as listed in Clause 4, when used as intended and under the conditions foreseen by the manufacturer.

This European Standard covers:

  • fuel pipework downstream of and including the manual isolating valve;

  • burner(s), burner system and ignition device;

  • safety related control system (protective system).

This European Standard applies to any oxidation with air or other gases containing free oxygen of gaseous, liquid and solid fuels or any combustion of them to release thermal energy.

For thermal or catalytic post combustion and waste incineration, this European Standard applies only to auxiliary burners designed to start-up and/or support the process.

The pressure hazard of the piping and components covered by this standard is within the limits of maximum pressure/size relationship as described in normative Annex E.

This European Standard also gives the necessary requirements for the information for use.

This European Standard does not cover hazards from heating generated by electricity.

This European Standard does not deal with the hazards created by the release of flammable substances from the products processed in the IThE.

NOTE EN 1539, Dryers and ovens, in which flammable substances are released — Safety requirements

This European Standard is not applicable to combustion and fuel handling systems

  • of welding and soldering machines;

  • up-stream of the IThE manual isolating valve.

This European Standard is not applicable to electricity cabling and power cabling upstream of the IThE control panel/protective system.

Noise can be a significant hazard for combustion and fuel handling systems. It is not dealt with in this standard.

This European Standard is not applicable to combustion and fuel handling systems as part of IThE which is manufactured before the date of its publication as EN.

Committee
MCE/3/8
DevelopmentNote
Supersedes 92/76830 DC (09/2005) Supersedes 06/30119140 DC. (06/2010)
DocumentType
Standard
Pages
128
PublisherName
British Standards Institution
Status
Superseded
SupersededBy
Supersedes

Standards Relationship
NS EN 746-2 : 2010 Identical
NF EN 746-2 : 2010 Identical
DIN EN 746-2:2011-02 Identical
UNI EN 746-2 : 2011 Identical
SN EN 746-2 : 2010 Identical
NEN EN 746-2 : 2010 Identical
EN 746-2:2010 Identical
I.S. EN 746-2:2010 Identical
NBN EN 746-2 : 2010 Identical
UNE-EN 746-2:1997 Identical

PD 6686:2006 Guidance on directives, regulations and standards related to prevention of fire and explosion in the process industries
BS 5908-2:2012 Fire and explosion precautions at premises handling flammable gases, liquids and dusts Guide to applicable standards and regulations
12/30258581 DC : 0 BS 5908-2 - FIRE AND EXPLOSION PRECAUTIONS AT PREMISES HANDLING FLAMMABLE GASES, LIQUIDS AND DUSTS - PART 2: GUIDE TO APPLICABLE STANDARDS AND REGULATIONS
EI Model code of safe practice Part 15:2015 MODEL CODE OF SAFE PRACTICE - PART 15: AREA CLASSIFICATION FOR INSTALLATIONS HANDLING FLAMMABLE FLUIDS

EN 730-2:2002 Gas welding equipment - Safety devices - Part 2: Not incorporating a flame (flashback) arrestor
EN 10208-2:2009 Steel pipes for pipelines for combustible fluids - Technical delivery conditions - Part 2: Pipes of requirement class B
EN 676:2003+A2:2008/AC:2008 AUTOMATIC FORCED DRAUGHT BURNERS FOR GASEOUS FUELS
EN 1539:2015 Dryers and ovens, in which flammable substances are released - Safety requirements
EN 746-1:1997+A1:2009 Industrial thermoprocessing equipment - Part 1: Common safety requirements for industrial thermoprocessing equipment
EN 61508-3:2010 Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 3: Software requirements
EN 13480-2:2017 Metallic industrial piping - Part 2: Materials
EN ISO 5817:2014 Welding - Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) - Quality levels for imperfections (ISO 5817:2014)
EN 264 : 1991 SAFETY SHUT OFF DEVICES FOR COMBUSTION PLANTS USING LIQUID FUELS - SAFETY REQUIREMENTS AND TESTING
IEC 60364-4-43:2008 Low-voltage electrical installations - Part 4-43: Protection for safety - Protection against overcurrent
EN 61000-6-1:2007 Electromagnetic compatibility (EMC) - Part 6-1: Generic standards - Immunity for residential, commercial and light-industrial environments
EN 982:1996+A1:2008 Safety of machinery - Safety requirements for fluid power systems and their components - Hydraulics
EN 1037:1995+A1:2008 Safety of machinery - Prevention of unexpected start-up
ISO 7005-2:1988 Metallic flanges — Part 2: Cast iron flanges
EN ISO 19879:2010 Metallic tube connections for fluid power and general use - Test methods for hydraulic fluid power connections (ISO 19879:2010)
ISO 6976:2016 Natural gas — Calculation of calorific values, density, relative density and Wobbe indices from composition
ISO 8434-1:2007 Metallic tube connections for fluid power and general use Part 1: 24 degree cone connectors
EN ISO 8434-4 : 2000 METALLIC TUBE CONNECTIONS FOR FLUID POWER AND GENERAL USE - PART 4: 24 DEGREE CONE CONNECTORS WITH O-RING WELD-ON NIPPLES
EN 1088:1995+A2:2008 Safety of machinery - Interlocking devices associated with guards - Principles for design and selection
EN 13480-4:2017 Metallic industrial piping - Part 4: Fabrication and installation
IEC 60947-4-1:2009+AMD1:2012 CSV Low-voltage switchgear and controlgear - Part 4-1: Contactors and motor-starters - Electromechanical contactors and motor-starters
EN 12067-2:2004 Gas/air ratio controls for gas burners and gas burning appliances - Part 2: Electronic types
IEC 60364-4-41:2005+AMD1:2017 CSV Low voltage electrical installations - Part 4-41: Protection for safety - Protection against electric shock
IEC 61000-6-2:2016 Electromagnetic compatibility (EMC) - Part 6-2: Generic standards - Immunity standard for industrial environments
EN 1057:2006+A1:2010 Copper and copper alloys - Seamless, round copper tubes for water and gas in sanitary and heating applications
EN 1643:2014 Safety and control devices for gas burners and gas burning appliances - Valve proving systems for automatic shut-off valves
EN 61558-1:2005/A1:2009 SAFETY OF POWER TRANSFORMERS, POWER SUPPLIES, REACTORS AND SIMILAR PRODUCTS - PART 1: GENERAL REQUIREMENTS AND TESTS
EN 50370-2:2003 Electromagnetic compatibility (EMC) - Product family standard for machine tools - Part 2: Immunity
EN 12067-1 : 98 AMD 1 2003 GAS/AIR RATIO CONTROLS FOR GAS BURNERS AND GAS BURNING APPLIANCES - PART 1: PNEUMATIC TYPES
IEC 60204-1:2016 Safety of machinery - Electrical equipment of machines - Part 1: General requirements
IEC 60364-5-53:2001+AMD1:2002+AMD2:2015 CSV Electrical installations of buildings - Part 5-53: Selection and erection of electrical equipment - Isolation, switching and control
IEC 61000-6-1 : 3.0 ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 6-1: GENERIC STANDARDS - IMMUNITY STANDARD FOR RESIDENTIAL, COMMERCIAL AND LIGHT-INDUSTRIAL ENVIRONMENTS
ISO 7005-3:1988 Metallic flanges Part 3: Copper alloy and composite flanges
EN 751-2:1996 Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water - Part 2: Non-hardening jointing compounds
EN 88-2:2007 Pressure regulators and associated safety devices for gas appliances - Part 2: Pressure regulators for inlet pressures above 500 mbar up to and including 5 bar
EN 13480-1:2017 Metallic industrial piping - Part 1: General
IEC 61810-1:2015 Electromechanical elementary relays - Part 1: General and safety requirements
IEC 61508-3:2010 Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 3: Software requirements (see Functional Safety and IEC 61508)
EN 161:2011+A3:2013 Automatic shut-off valves for gas burners and gas appliances
EN 1797:2001 Cryogenic vessels - Gas/material compatibility
EN 267:2009+A1:2011 Automatic forced draught burners for liquid fuels
ISO 5817:2014 Welding — Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) — Quality levels for imperfections
ISO 8434-2:2007 Metallic tube connections for fluid power and general use — Part 2: 37 degree flared connectors
EN 1854:2010 Pressure sensing devices for gas burners and gas burning appliances
EN 13480-3:2017 Metallic industrial piping - Part 3: Design and calculation
EN 12300 : 1998 AMD 1 2006 CRYOGENIC VESSELS - CLEANLINESS FOR CRYOGENIC SERVICE
EN 12952-8:2002 Water-tube boilers and auxiliary installations - Part 8: Requirements for firing systems for liquid and gaseous fuels for the boiler
IEC 61558-1:2017 Safety of transformers, reactors, power supply units and combinations thereof - Part 1: General requirements and tests
ISO 7-1:1994 Pipe threads where pressure-tight joints are made on the threads Part 1: Dimensions, tolerances and designation
EN 125:2010+A1:2015 Flame supervision devices for gas burning appliances - Thermoelectric flame supervision devices
EN ISO 12100-1:2003/A1:2009 SAFETY OF MACHINERY - BASIC CONCEPTS, GENERAL PRINCIPLES FOR DESIGN - PART 1: BASIC TERMINOLOGY, METHODOLOGY
EN 60947-4-1 : 2010 AMD 1 2012 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 4-1: CONTACTORS AND MOTOR-STARTERS - ELECTROMECHANICAL CONTACTORS AND MOTOR-STARTERS (IEC 60947-4-1:2009/A1:2012)
EN 61000-6-2:2005/corrigendum:2005 ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 6-2: GENERIC STANDARDS - IMMUNITY FOR INDUSTRIAL ENVIRONMENTS (IEC 61000-6-2:2005)
ISO 8434-3:2005 Metallic tube connections for fluid power and general use — Part 3: O-ring face seal connectors
IEC 60529:1989+AMD1:1999+AMD2:2013 CSV Degrees of protection provided by enclosures (IP Code)
ISO 19879:2010 Metallic tube connections for fluid power and general use Test methods for hydraulic fluid power connections
IEC 60364-4-44:2007+AMD1:2015 CSV Low-voltage electrical installations - Part 4-44: Protection for safety - Protection against voltage disturbances and electromagnetic disturbances
EN 334:2005+A1:2009 Gas pressure regulators for inlet pressures up to 100 bar
EN 62061:2005/A2:2015 SAFETY OF MACHINERY - FUNCTIONAL SAFETY OF SAFETY-RELATED ELECTRICAL, ELECTRONIC AND PROGRAMMABLE ELECTRONIC CONTROL SYSTEMS (IEC 62061:2005/A2:2015)
EN 10241:2000 Steel threaded pipe fittings
EN 60664-1:2007 Insulation coordination for equipment within low-voltage systems - Part 1: Principles, requirements and tests
IEC 60439-1:1999+AMD1:2004 CSV Low-voltage switchgear and controlgear assemblies - Part 1: Type-tested and partially type-tested assemblies
EN 230:2005 Automatic burner control systems for oil burners
ISO 12100-2:2003 Safety of machinery Basic concepts, general principles for design Part 2: Technical principles
IEC 61000-6-1:2016 Electromagnetic compatibility (EMC) - Part 6-1: Generic standards - Immunity standard for residential, commercial and light-industrial environments
EN ISO 12100-2:2003/A1:2009 SAFETY OF MACHINERY - BASIC CONCEPTS, GENERAL PRINCIPLES FOR DESIGN - PART 2: TECHNICAL PRINCIPLES
ISO 8434-4:1995 Metallic tube connections for fluid power and general use Part 4: 24 degree cone connectors with O-ring weld-on nipples
EN 751-1:1996 Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water - Part 1: Anaerobic jointing compounds
EN ISO 8434-1:2007/AC:2009 METALLIC TUBE CONNECTIONS FOR FLUID POWER AND GENERAL USE - PART 1: 24 DEGREE CONE CONNECTORS
EN 60439-1:1999/A1:2004 LOW VOLTAGE SWITCHGEAR AND CONTROLGEAR ASSEMBLIES - PART 1 - TYPE TESTED AND PARTIALLY TYPE TESTED ASSEMBLIES
EN 14382:2005+A1:2009/AC:2009 SAFETY DEVICES FOR GAS PRESSURE REGULATING STATIONS AND INSTALLATIONS - GAS SAFETY SHUT-OFF DEVICES FOR INLET PRESSURES UP TO 100 BAR
EN 983:1996+A1:2008 Safety of machinery - Safety requirements for fluid power systems and their components - Pneumatics
ISO 12100-1:2003 Safety of machinery Basic concepts, general principles for design Part 1: Basic terminology, methodology
EN ISO 13849-1:2015 Safety of machinery - Safety-related parts of control systems - Part 1: General principles for design (ISO 13849-1:2015)
EN 61140:2016 Protection against electric shock - Common aspects for installation and equipment
ISO 3405:2011 Petroleum products Determination of distillation characteristics at atmospheric pressure
IEC 61310-1:2007 Safety of machinery - Indication, marking and actuation - Part 1: Requirements for visual, acoustic and tactile signals
EN 298:2012 Automatic burner control systems for burners and appliances burning gaseous or liquid fuels
EN 10216-1:2013 Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 1: Non-alloy steel tubes with specified room temperature properties
ISO 7005-1:2011 Pipe flanges — Part 1: Steel flanges for industrial and general service piping systems
EN 730-1:2002 Gas welding equipment - Safety devices - Part 1: Incorporating a flame (flashback) arrestor
EN 60529:1991/AC:2016-12 DEGREES OF PROTECTION PROVIDED BY ENCLOSURES (IP CODE) (IEC 60529 EDITION 2.2 CORRIGENDUM 2:2015)
IEC 62061:2005+AMD1:2012+AMD2:2015 CSV Safety of machinery - Functional safety of safety-related electrical, electronic and programmable electronic control systems
EN 1547:2001+A1:2009 Industrial thermoprocessing equipment - Noise test code for industrial thermoprocessing equipment including its ancillary handling equipment
IEC 61140:2016 Protection against electric shock - Common aspects for installation and equipment
EN 50370-1 : 2005 Electromagnetic compatibility (EMC) - Product family standard for machine tools - Part 1: Emission
EN 331:2015 Manually operated ball valves and closed bottom taper plug valves for gas installations for buildings
EN 10208-1:2009 Steel pipes for pipelines for combustible fluids - Technical delivery condi-tions - Part 1: Pipes of requirement class A
EN 13480-5:2017 Metallic industrial piping - Part 5: Inspection and testing
EN 10220:2002 Seamless and welded steel tubes - Dimensions and masses per unit length
EN 10242:1994/A2:2003 THREADED PIPE FITTING IN MALLEABLE CAST IRON
ISO 13849-1:2015 Safety of machinery — Safety-related parts of control systems — Part 1: General principles for design
EN 61310-1:2008 Safety of machinery - Indication, marking and actuation - Part 1: Requirements for visual, acoustic and tactile signals
IEC 61000-6-2 : 3.0:2016 ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 6-2: GENERIC STANDARDS - IMMUNITY STANDARD FOR INDUSTRIAL ENVIRONMENTS
IEC 60664-1:2007 Insulation coordination for equipment within low-voltage systems - Part 1: Principles, requirements and tests
ENV 14459 : DRAFT 2002 METHOD OF RISK ANALYSIS AND RECOMMENDATIONS FOR THE USE OF ELECTRONICS IN SYSTEMS FOR THE CONTROL OF GAS BURNERS AND GAS BURNING APPLIANCES
EN 88-1:2011+A1:2016 Pressure regulators and associated safety devices for gas appliances - Part 1: Pressure regulators for inlet pressures up to and including 50 kPa
ISO 228-1:2000 Pipe threads where pressure-tight joints are not made on the threads Part 1: Dimensions, tolerances and designation
EN 10217-1:2002/A1:2005 WELDED STEEL TUBES FOR PRESSURE PURPOSES - TECHNICAL DELIVERY CONDITIONS - NON-ALLOY STEEL TUBES WITH SPECIFIED ROOM TEMPERATURE PROPERTIES
EN 10255:2004+A1:2007 Non-Alloy steel tubes suitable for welding and threading - Technical delivery conditions
EN 60730-1:2016 Automatic electrical controls - Part 1: General requirements
EN 525:2009 Non-domestic direct gas-fired forced convection air heaters for space heating not exceeding a net heat input of 300 kW
EN 60204-1 : 2006 COR 2010 SAFETY OF MACHINERY - ELECTRICAL EQUIPMENT OF MACHINES - PART 1: GENERAL REQUIREMENTS
IEC 60730-1:2013+AMD1:2015 CSV Automatic electrical controls - Part 1: General requirements
EN 12078:1998 Zero governors for gas burners and gas burning appliances

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