This document: — specifies the general safety requirements for secondary steelmaking machinery and equipment (SSME) as defined in 3.1 to treat liquid steel; — deals with all significant hazards, hazardous situations and events pertinent to SSME, when used as intended and under conditions foreseen by the manufacturer, but also includes foreseeable misuse, faults and malfunctions; — specifies the requirements to ensure the safety of persons which are to be met during the design, pre-assembly, transport, sites assembly, commissioning, operation, maintenance, decommissioning and dismantling/ disassembling of the equipment; — assumes that SSMEs are operated and maintained by adequately trained and competent personnel. Manual intervention for setting, adjustment and maintenance is accepted as part of the normal use of the equipment. This document applies to SSME involved in the treatment process of liquid steel under vacuum or atmospheric pressure and covers: — LF, ladle furnace, — VD, vacuum degassing, — VOD, vacuum oxygen decarburization, — RH (OB), Ruhrstahl Heraeus (oxygen blowing), — process related interfaces/interactions (e.g. according to design, controls) to: a) process media, b) primary and secondary gas cleaning plant, c) material handling systems, d) transfer cars for steel ladle, and e) crane and ladle. NOTE 1 Due to the variety of secondary metallurgical processes, there are other variants (e.g. VODC – vacuum oxygen decarburization converter, CAS, CAS - OB) in addition to the main processes discussed in this document. Most countries require that applicable safety requirements, specific to this equipment be implemented. This document does not cover safety requirements for the following equipment: — cranes; — transfer cars, e.g. ladle transfer cars, tank cars, maintenance cars; — fork lift trucks or other transporting equipment; — ladles; — equipment for relining and preheating in the relining area; — burners according to ISO 13577‑2 (the burner lances for RH vessels are covered by ISO 13577‑2 except for maximum main burner ignition time, see 5.2.26.2); — cleaning and treatment of dust and fume exhaust systems; — process media (e.g. air separation, boiler house, steam generation system); — material handling systems. NOTE 2 Significant hazards and hazardous situations due to transporting/positioning of heavy components, e.g. by cranes (e.g. ladles, vessels, covers) are considered in this document (see 5.2.3). This document is not applicable to SSMEs and associated equipment manufactured before the date of its publication.

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This document specifies the requirements for protective systems used in industrial furnaces and associated processing equipment (TPE).
The functional requirements to which the protective systems apply are specified in ISO 13577-1 ISO 13577-2 and ISO 13577-3.
This document is not applicable to blast furnaces, converters (in steel plants), boilers, fired heaters (including reformer furnaces) in the petrochemical and chemical industries.
This document is not applicable to electrical cabling and power cabling upstream of the TPE control panel/protective system.
This document is not applicable to the protective systems manufactured before the date of its publication.

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This part of ISO 13577 specifies the requirements for protective systems used in industrial furnaces and associated processing equipment (TPE).
The functional requirements to which the protective systems apply are specified in the other parts of ISO 13577.

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This document specifies the requirements for protective systems used in industrial furnaces and associated processing equipment (TPE). The functional requirements to which the protective systems apply are specified in ISO 13577-1 ISO 13577-2 and ISO 13577-3. This document is not applicable to blast furnaces, converters (in steel plants), boilers, fired heaters (including reformer furnaces) in the petrochemical and chemical industries. This document is not applicable to electrical cabling and power cabling upstream of the TPE control panel/protective system. This document is not applicable to the protective systems manufactured before the date of its publication.

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This part of the EN 746 series specifies safety requirements for generation and use of protective and reactive atmosphere gases that are part of industrial thermo-processing equipment (TPE).
The general safety requirements common to TPE are provided in EN 746 1:1997+A1:2009 (see Introduction).
This part of the EN 746 series deals with significant hazards, hazardous situations and events relevant to the generation and use of protective and reactive atmosphere gases created by thermochemical reactions and their use in TPE that are part of TPE as listed in Clause 4 and Clause 5, when used as intended and under the conditions foreseen by the manufacturer.
This part of the EN 746 series covers:
-   pipework downstream of and including the manual isolating valve,
-   equipment for the generation of atmosphere gases,
-   additional equipment for the use of atmosphere gases in TPE,
-   safety devices, and
-   functional requirements for safety related control system
for the generation and use of protective and reactive atmosphere gases.
It applies to the supply of atmosphere gas, source gas, inert gas and process liquids to TPE and their removal from TPE, confined to equipment integrated in the TPE.
This part of the EN 746 series also details the anticipated significant hazards associated with atmosphere gas systems and their use in TPE and specifies the appropriate preventative measures for the reduction or elimination of these hazards.
The pressure hazard of the piping and components covered by this standard is within the maximum pressure/size relationship of group 1 as described in Annex C.
This part of the EN 746 series:
-   specifies the requirements to be met to ensure the safety of persons and property during installation, commissioning, start up, operation, shutdown and maintenance,
-   does not cover the relevant risks involved in the flue gas ducting system when it is not considered a part of TPE,
-   is not applicable to utility supply upstream of the TPE main disconnects,
-   does not apply to TPE for semi-conductor devices,
-   does not apply to TPE with atmosphere, such as air and flue gas from an over stoichiometric combustion,
-   does not cover the decommissioning of the TPE,
-   does not cover vacuum furnaces,
-   does not cover blast furnaces, converters (in steel plants), boilers and equipment not covered under EN ISO 12100:2010.
-   does not deal with the hazard of noise which is covered in EN 746 1:1997+A1:2009,
-   is not applicable to generation and use of atmosphere gas in TPE and associated plant which is manufactured before the date of its publication, and
-   gives the necessary requirements for the information for use.
A TPE designed according to this part of EN 746 series does not create any potentially explosive atmosphere in the area around the TPE and is not designed to be located in an area with a potentially explosive or hazardous atmosphere.
This part of the EN 746 series deals with significant hazards which are described in Annex A.
A table of typical protective and reactive gases is given in Annex B.

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This part of EN 746 series specifies safety requirements for generation and use of protective and reactive atmosphere gases that are part of industrial thermo-processing equipment (TPE).
NOTE   The general safety requirements common to TPE are provided in EN 746  1 (see Introduction).
This part of EN 746 series deals with significant hazards, hazardous situations and events relevant to the generation and use of protective and reactive atmosphere gases created by thermochemical reactions and their use in TPE that are part of TPE as listed in Clause 4 and Clause 5, when used as intended and under the conditions foreseen by the manufacturer.
This part of EN 746 series covers
-   pipework downstream of and including the manual isolating valve,
-   equipment for the generation of atmosphere gases,
-   additional equipment for the use of atmosphere gases in TPE,
-   safety devices, and
-   functional requirements for safety related control system
for the generation and use of protective and reactive atmosphere gases.
It applies to the supply of atmosphere gas, source gas, inert gas and process liquids to TPE and their removal from TPE, confined to equipment integrated in the TPE.
This part of EN 746 series also details the anticipated significant hazards associated with atmosphere gas systems and their use in TPE and specifies the appropriate preventative measures for the reduction or elimination of these hazards.
The pressure hazard of the piping and components covered by this standard is within the maximum pressure/size relationship of group I as described in Annex C.
This part of EN 746 series
-   specifies the requirements to be met to ensure the safety of persons and property during installation, commissioning, start up, operation, shutdown and maintenance,
-   does not cover the relevant risks involved in the flue gas ducting system when it is not considered a part of TPE,
-   is not applicable to utility supply upstream of the TPE main disconnects,
-   does not apply to TPE for semi-conductor devices,
-   does not apply to TPE with atmosphere, such as air and flue gas from an over stoichiometric combustion,
-   does not cover the decommissioning of the TPE,
-   does not cover vacuum furnaces,
-   does not deal with the hazard of noise which is covered in EN 746-1:2019,
-   is not applicable to generation and use of atmosphere gas in TPE and associated plant which is manufactured before the date of its publication, and
-   gives the necessary requirements for the information for use.
A TPE designed according to this part of EN 746 series does not create any potentially explosive atmosphere in the area around the TPE and is not designed to be located in an area with a potentially explosive or hazardous atmosphere.
A table of typical protective and reactive gases is given in Annex B.

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This document applies for new steel converter and its associated equipment (hereinafter referred to as converter plant) used in the process of carbon or stainless steel making as defined in 3.1 and illustrated in Annex B. This document deals with significant hazards, hazardous situations and events relevant to the converter plant. It covers the intended use and foreseeable misuse. This document specifies the safety requirements to be met during design, pre-assembly, transport, site-assembly, commissioning, operation, maintenance (as described in Clause 5) and decommissioning/dis­assembly of the equipment. Assembly does not include erection because national regulations, e.g. national civil engineering laws and regulations or occupational health and safety regulations contain such information. This document applies to: Steel converter and its associated equipment (see Annex B, Figure B.1 for the oxygen steelmaking process — from charging hot metal/liquid steel and scrap; — via oxygen refining and stirring; — temperature measurement and sampling equipment; — up to tapping including slag retaining device; — cooling systems; — maintenance devices (e.g. relining device, tap hole repair device, device for cleaning the converter mouth); — process related interfaces/interactions (e.g. according to design, controls) to — process media, — primary and secondary gas cleaning plant, — material feeding systems and ladle alloying systems, — transfer cars for steel ladle and slag pot, and — charging/tapping equipment, e.g. crane, scrap chute, ladles and slag pots. This document does not cover safety requirements for: — usage of process media other than oxygen, nitrogen, argon and compressed air; — primary and secondary gas cleaning plants; — measuring devices with radioactive sources; — material feeding systems and ladle alloying systems; — transfer cars for steel ladle and slag pot; — charging/tapping and de-slagging equipment, e.g. crane, scrap chutes, ladles and slag pots; — auxiliary winches and hoists. For variations of converter process where other gases and process media, e.g. hydrocarbons, fuels, steam, etc. are used, additional safety measures shall be considered which are not covered in this safety standard. NOTE In case of revamping, this document can be used as a guideline for the specific parts to be revamped. This document is not applicable to steel converter and associated equipment manufactured before the date of its publication.

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ISO 13578:2017 specifies the general safety requirements for electric arc furnaces (EAF) to melt steel not containing radioactive material. NOTE Radioactive material is considered to be detected in front of the steel plant entrance. ISO 13578:2017 deals with significant hazards, hazardous situations and events as listed in Table 1 pertinent to EAF, when used as intended and under conditions foreseen by the manufacturer, and also includes foreseeable faults and malfunctions in case of misuse. ISO 13578:2017 also specifies criteria for the plant and equipment integrated in the production process. ISO 13578:2017 specifies the requirements to be followed during design to ensure the safety of persons, which are to be met during transport, assembly, commissioning, operation, maintenance and decommissioning of the equipment. ISO 13578:2017 assumes that installations are operated and maintained by adequately trained personnel. Manual intervention for setting, adjustment and maintenance is accepted as part of the normal use of the equipment. ISO 13578:2017 covers the following equipment (see Annex B, Tables B.1 and B.2, and Annex C, Figures C.1 and C.2): - EAF with alternating current (AC) technology; - EAF with direct current (DC) technology; - scrap preheating technology; - associated equipment/devices (e.g. inert gas stirring, carbon and oxygen injection systems). The following equipment is not covered by ISO 13578:2017: - induction furnace; - resistance-arc furnace (e.g. submerged arc furnace); - electron beam furnace; - plasma furnace; - other electrical furnaces used in secondary steelmaking, e.g. ladle furnace. ISO 13578:2017 does not specify safety requirements for the following equipment, which can be an integral or complementary part of the equipment covered by the scope: - cranes; - shell lifting cross beam; - scrap basket, steel ladle and slag pot; - transport cars for scrap baskets, steel ladles and slag pots; - dedusting system; - "dog house" and "elephant house" (furnace enclosures for environmental reasons); - alloying system; - separate scrap drying equipment; - furnace transformer and high-voltage system; - robots/manipulators (e.g. for temperature measurement and sampling).

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ISO 13579-11:2017 specifies classifications and designations in the methodology of energy efficiency evaluation of industrial furnaces and associated processing equipment (TPE), including energy efficiency in terms of exergy as well as enthalpy. ISO 13579-11:2017does not apply to the following types of TPE: - blast furnaces, basic oxygen furnaces, coke ovens; - furnaces that generate gases to be used as fuel (including by-product gases); - special atmosphere gas generators; - industrial furnaces that are designed for chemical plants or petroleum plants; - installations where heating or combustion is performed in an open space; - installations that combust solid fuel; - waste incinerators.

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ISO 13577-3:2016 specifies safety requirements for generation and use of protective and reactive atmosphere gases that are part of industrial thermo-processing equipment (TPE). NOTE The general safety requirements common to TPE are provided in ISO 13577‑1 (see Introduction). ISO 13577-3:2016 deals with significant hazards, hazardous situations and events relevant to the generation and use of protective and reactive atmosphere gases created by thermochemical reactions and their use in TPE that are part of TPE as listed in Clause 4 and Clause 5, when used as intended and under the conditions foreseen by the manufacturer. It covers - pipework downstream of and including the manual isolating valve, - equipment for the generation of atmosphere gases, - additional equipment for the use of atmosphere gases in TPE, - safety devices, and - functional requirements for safety related control system for the generation and use of protective and reactive atmosphere gases. It applies to the supply of atmosphere gas, source gas, inert gas and process liquids to TPE and their removal from TPE, confined to equipment integrated in the TPE. ISO 13577-3:2016 also details the anticipated significant hazards associated with atmosphere gas systems and their use in TPE and specifies the appropriate preventative measures for the reduction or elimination of these hazards. The pressure hazard of the piping and components covered by this standard is within the maximum pressure/size relationship of group I as described in Annex C. It - specifies the requirements to be met to ensure the safety of persons and property during installation, commissioning, start up, operation, shutdown and maintenance, - does not cover the relevant risks involved in the flue gas ducting system when it is not considered a part of TPE, - is not applicable to utility supply upstream of the TPE main disconnects, - does not apply to TPE for semi-conductor devices, - does not apply to TPE with atmosphere, such as air and flue gas from an over stoichiometric combustion, - does not cover the decommissioning of the TPE, - does not cover vacuum furnaces, - does not deal with the hazard of noise which is covered in ISO 13577‑1, - is not applicable to generation and use of atmosphere gas in TPE and associated plant which is manufactured before the date of its publication, and - gives the necessary requirements for the information for use. A TPE designed according to ISO 13577-3:2016 does not create any potentially explosive atmosphere in the area around the TPE and is not designed to be located in an area with a potentially explosive or hazardous atmosphere. A table of typical protective and reactive gases is given in Annex B.

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ISO 13577-1:2016 the general safety requirements common to industrial furnaces and associated processing equipment (TPE). ISO 13577-1:2016 deals with the significant hazards, hazardous situations or hazardous events relevant to TPE, as listed in Annex A, when TPE is used as intended and also under conditions of misuse that are reasonably foreseeable by the manufacturer. Annex B provides a list of common industrial furnaces and associated processing equipment. This document specifies the requirements intended to be met by the manufacturer to ensure the safety of persons and property during commissioning, start-up, operation, shut-down, maintenance periods and dismantling, as well as in the event of foreseeable faults or malfunctions that can occur in the equipment. These general safety requirements apply to all TPE, unless an exception is given in other parts of ISO 13577 dealing with specific equipment. The provisions of other parts of ISO 13577 that directly apply to specific types of TPE take precedence over the provisions of this document. ISO 13577-1:2016 is not applicable to blast furnaces, converters (in steel plants), boilers or equipment not covered under ISO 12100.

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This European Standard deals with all significant hazards, hazardous situations and hazardous events relevant to ovens and dryers in which flammable substances are released by evaporation from and curing of coating materials.
The specific significant risks related to the use of this machinery with foodstuff and pharmaceutical products are not dealt with in this European Standard.
This European Standard is only applicable to machines which are used as intended and under the conditions which are foreseeable as malfunction by the manufacturer (see Clause 4).
For ovens and dryers in which flammable substances are released by evaporation from and curing of coating materials, in which the concentration of these flammable substances shall not, under no circumstances, exceed 3 % of the LEL, EN 746-1 and EN 746-2 may be applied instead of this European Standard.
This European Standard is not applicable to:
—   ovens for hardening metals;
—   enamelling plants;
—   portable heating systems for drying (for instance infrared radiant heaters, hot-air blowers, blow-dryers);
—   solvent recovery plants;
—   distillation and/or refraction plants;
—   textile dry-cleaning systems.
This European Standard is not applicable to machinery manufactured before the date of its publication as EN.

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The Standard defines safety measures for ovens and dryers in which flammable substances are released by evaporation from and curing of coating materials.

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ISO 13574:2015 establishes the vocabulary for all industrial furnaces and associated processing equipment (TPE). It provides terms and definitions which are intended to be applied to the following documents: - ISO 13577 (all parts); - ISO 13579 (all parts).

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ISO 13577-2:2014 specifies the safety requirements for combustion and fuel handling systems that are part of industrial furnaces and associated processing equipment (TPE). It deals with significant hazards, hazardous situations and events relevant to combustion and fuel handling systems, when used as intended and under the conditions foreseen by the manufacturer. ISO 13577-2:2014 covers: fuel pipework downstream of and including the manual isolating valve; combustion air supply (including oxygen and oxygen enriched combustion air) and flue gas system; burner(s), burner system and ignition device; functional requirements for safety related control system. It applies to any oxidation with air or other gases containing free oxygen of gaseous and liquid fuels or any combustion of them to release thermal energy in TPE. For thermal or catalytic post combustion and waste incineration, ISO 13577-2:2014 applies only to auxiliary burners designed to start-up and/or support the process. ISO 13577-2:2014 also gives the necessary requirements regarding information for use.

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ISO 13579-3:2013 specifies general methodology for measuring energy balance and calculating the efficiency of the process involving batch-type aluminium melting furnaces as designed by furnace manufacturers. This general methodology includes measurement methods, calculations (general calculation) and energy balance and efficiency calculation evaluation report. ISO 13579-3:2013 is not applicable to any efficiencies related to the process itself outside of batch-type aluminium melting furnaces.

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ISO 13579-4:2013 specifies general methodology for measuring energy balance and calculating the efficiency of the process involving furnaces with protective or reactive atmosphere as designed by the furnace manufacturers. This general methodology includes measurement methods, calculations (general calculation), and evaluation report. part of ISO 13579-4:2013 is not applicable to any efficiencies related to the process itself outside of furnaces with protective or reactive atmosphere.

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ISO 13579-2:2013 specifies a general methodology for measuring energy balance and calculating the efficiency of the process involving reheating furnaces for steel as designed by furnace manufacturers. This general methodology includes measurement methods, calculations (general calculation) and energy balance and efficiency calculation evaluation report. ISO 13579-2:2013 is not applicable to any efficiencies related to the process itself outside of reheating furnaces for steel.

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ISO 13579-1:2013 specifies a general methodology for measuring energy balance and calculating the efficiency of the process involving industrial furnaces and associated processing equipment as designed by furnace manufacturers. This general methodology includes measurement methods, calculations (general calculation) and an energy balance evaluation report. ISO 13579-1:2013 is not applicable to any efficiencies related to the process itself outside of industrial furnaces and associated processing equipment.

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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 maximum pressure/size relationship of category I as described in normative Annex D.
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.

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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.

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1.1   This part of EN 746 specifies common safety requirements for industrial thermoprocessing equipment (for example industrial furnaces and industrial heating equipment), which meets the definition for machinery given in EN ISO 12100-1:2003.
It details the anticipated significant hazards associated with industrial thermoprocessing equipment and specifies the appropriate preventative measures for reduction or elimination of these hazards.
This standard gives general principles and common requirements for the reduction of risks for equipments covered by the scope.
The common requirements apply to all of the subsequent parts of this EN 746 dealing with specific equipment unless an exception is stated in the relevant Part. The general principles (subclauses are pointed out) will be used to establish the specific technical measures in the subsequent Part(s) dealing with safety requirements for particular equipment.
NOTE   For similar equipment not covered by the particular Parts of this standard, EN 746-1 can be used to assist in the reduction of risk for the Hazards identified in clause 4 (List of Hazards).
1.2   This part of EN 746 is applicable to industrial thermoprocessing equipments for use in fields such as:
-   Metallurgical and metal working plant;
-   Glass making plant;
-   Ceramic manufacturing plant;
-   Cement, lime and gypsum manufacturing plant;
-   Chemical plant;
-   Waste incineration equipment;
And heated by:
-   Gaseous fuels;
-   Liquid fuels;
-   Solid fuels;
-   Mixed fuels;
-   Electricity.
The thermoprocessing equipment covered by this Part of EN 746 is further specified in clause 3.
A more detailed list of thermoprocessing equipment within these categories is given in Annex A.
In the remainder of this standard the expression "equipment" will be used.
This Part of EN 746 is not applicable to blast furnaces, converters (in steel plants), boilers, welding machines or food processing equipment.
1.3   This Part of EN 746 specifies the requirements to be

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This noise test code specifies all the information necessary to carry out efficiently and under standardized conditions the determination, declaration and verification of the noise emission characteristics of industrial thermoprocessing equipment as described especially in EN 746-1, EN 746-2 and EN 746-3. It also indicates the location of work stations where measurements need to be made.
Noise emission characteristics include emission sound pressure levels at work stations and the sound power level. The determination of these quantities is necessary for:
-   manufacturers to declare the noise emitted;
-   comparing the noise emitted by machines in the group concerned;
-   purposes of noise control at the source at the design stage.
The use of this standard ensures the reproducibility of the determination of the noise emission characteristics within specified limits determined by the grade of accuracy of the basic noise measurement method used. Noise measurement methods allowed by this standard are engineering methods (grade 2) and survey methods (grade 3).
This standard does not cover the computation of personnel daily noise exposure.

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1.1   This part of EN 746 specifies common safety requirements for industrial thermoprocessing equipment (for example industrial furnaces and industrial heating equipment), which meets the definition for machinery given in EN ISO 12100-1:2003.
It details the anticipated significant hazards associated with industrial thermoprocessing equipment and specifies the appropriate preventative measures for reduction or elimination of these hazards.
This standard gives general principles and common requirements for the reduction of risks for equipments covered by the scope.
The common requirements apply to all of the subsequent parts of this EN 746 dealing with specific equipment unless an exception is stated in the relevant Part. The general principles (subclauses are pointed out) will be used to establish the specific technical measures in the subsequent Part(s) dealing with safety requirements for particular equipment.
NOTE   For similar equipment not covered by the particular Parts of this standard, EN 746-1 can be used to assist in the reduction of risk for the Hazards identified in clause 4 (List of Hazards).
1.2   This part of EN 746 is applicable to industrial thermoprocessing equipments for use in fields such as:
-   Metallurgical and metal working plant;
-   Glass making plant;
-   Ceramic manufacturing plant;
-   Cement, lime and gypsum manufacturing plant;
-   Chemical plant;
-   Waste incineration equipment;
And heated by:
-   Gaseous fuels;
-   Liquid fuels;
-   Solid fuels;
-   Mixed fuels;
-   Electricity.
The thermoprocessing equipment covered by this Part of EN 746 is further specified in clause 3.
A more detailed list of thermoprocessing equipment within these categories is given in Annex A.
In the remainder of this standard the expression "equipment" will be used.
This Part of EN 746 is not applicable to blast furnaces, converters (in steel plants), boilers, welding machines or food processing equipment.
1.3   This Part of EN 746 specifies the requirements to be

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This noise test code specifies all the information necessary to carry out efficiently and under standardized conditions the determination, declaration and verification of the noise emission characteristics of industrial thermoprocessing equipment as described especially in EN 746-1, EN 746-2 and EN 746-3. It also indicates the location of work stations where measurements need to be made.
Noise emission characteristics include emission sound pressure levels at work stations and the sound power level. The determination of these quantities is necessary for:
-   manufacturers to declare the noise emitted;
-   comparing the noise emitted by machines in the group concerned;
-   purposes of noise control at the source at the design stage.
The use of this standard ensures the reproducibility of the determination of the noise emission characteristics within specified limits determined by the grade of accuracy of the basic noise measurement method used. Noise measurement methods allowed by this standard are engineering methods (grade 2) and survey methods (grade 3).
This standard does not cover the computation of personnel daily noise exposure.

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This part of EN 746 gives the specific hazards and safety requirements that shall be provided by the manufacturer for Quenching Equipment, whether it is used as an independent unit or an integrated part of a plant. This part of EN 746 does not cover specific hazards and safety requirements for Salt Bath bath equipment used as a quenching means (see prEN 746-5:1999). This part of EN 746 does not cover the handling, storage, transport, disposal, transfer or regeneration of the quenching media and processed material outside the limits of the equipment.

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This part of EN 746 gives the specific hazards and safety requirements for the melting and use of molten salt that shall be provided by the manufacturer for Salt Bath Industrial Thermoprocessing Equipment, whether it is used as an independent unit or an integrated part of a plant. The limits of the equipment will include any transportation equipment which is located wholly or partially in the bath. This part of EN 746 does not cover the handling, storage, transport disposal, transfer or regeneration of the salts and processed material outside the limits of the equipment.

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This part of EN 746 gives the specific hazards and safety requirements for the melting and use of molten salt that shall be provided by the manufacturer for Salt Bath Industrial Thermoprocessing Equipment, whether it is used as an independent unit or an integrated part of a plant. The limits of the equipment will include any transportation equipment which is located wholly or partially in the bath. This part of EN 746 does not cover the handling, storage, transport disposal, transfer or regeneration of the salts and processed material outside the limits of the equipment.

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This part of EN 746 gives the specific hazards and safety requirements that shall be provided by the manufacturer for Quenching Equipment, whether it is used as an independent unit or an integrated part of a plant. This part of EN 746 does not cover specific hazards and safety requirements for Salt Bath bath equipment used as a quenching means (see prEN 746-5:1999). This part of EN 746 does not cover the handling, storage, transport, disposal, transfer or regeneration of the quenching media and processed material outside the limits of the equipment.

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This part of EN 746 gives the specific hazards and safety requirements that shall be provided by the manufacturer for Hot Dip Industrial Batch and the Bath of Continuous Galvanising Thermoprocessing Equipment, whether it is used as an independent unit or an integrated part of a plant. This part of EN 746 does not cover the handling, storage, transport, disposal, transfer or regeneration of the zinc and the processed material outside the limits of the equipment. This part of EN 746 does not deal with the risks arising from any component handling equipment for the dip process or for the associated protective measures

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This part of EN 746 gives the specific hazards and safety requirements that shall be provided by the manufacturer for Hot Dip Industrial Batch and the Bath of Continuous Galvanising Thermoprocessing Equipment, whether it is used as an independent unit or an integrated part of a plant. This part of EN 746 does not cover the handling, storage, transport, disposal, transfer or regeneration of the zinc and the processed material outside the limits of the equipment. This part of EN 746 does not deal with the risks arising from any component handling equipment for the dip process or for the associated protective measures

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This part of ISO 13577 specifies the safety requirements for combustion and fuel handling systems that are part of industrial furnaces and associated processing equipment (TPE).
NOTE The general safety requirements common to TPE are provided in ISO 13577-1 (See introduction) Annex°B of ISO 13577-1 also includes a list of processes for which industrial furnaces and heating systems covered by ISO 13577 may be used.
This part of ISO 13577 deals with significant hazards, hazardous situations and events relevant to combustion and fuel handling systems as listed in Annex E, when used as intended and under the conditions foreseen by the manufacturer.
This part of ISO 13577 covers:
— fuel pipework downstream of and including the manual isolating valve;
— combustion air supply (including oxygen and oxygen enriched combustion air) and flue gas system;
— burner(s), burner system and ignition device;
— functional requirements for safety related control system.
This part of ISO 13577 applies to any oxidation with air or other gases containing free oxygen of gaseous and liquid fuels or any combustion of them to release thermal energy in TPE.
For thermal or catalytic post combustion and waste incineration, this part of ISO 13577 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 part of ISO 13577 is within the maximum pressure/size relationship of category I as described in normative Annex A.
This part of ISO 13577 also gives the necessary requirements regarding information for use.
This part of ISO 13577 does not cover hazards from heating generated by electricity.
This part of ISO 13577 does not deal with the hazards created by the release of flammable substances from the products processed in the TPE.
This part of ISO 13577 is not applicable to combustion and fuel handling systems:
— of gas welding and allied processes
— up-stream of the TPE manual isolating valve.
This part of ISO 13577 is not applicable to blast furnaces, converters (in steel plants), boilers, fired heaters (including reformer furnaces) in the petrochemical and chemical industries.
This part of ISO 13577 is not applicable to electrical cabling and power cabling upstream of the TPE control panel/protective system.
This document is not applicable to combustion and fuel handling systems manufactured before the date of its publication.

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This part of EN 746 specifies the safety requirements for combustion and fuel handling systems that are part of industrial furnaces and associated processing equipment (TPE).
NOTE   The general safety requirements common to TPE are provided in prEN 746 1:2020 (See introduction).
This part of EN 746 deals with significant hazards, hazardous situations and events relevant to combustion and fuel handling systems as listed in Annex A, when used as intended and under the conditions foreseen by the manufacturer.
This part of EN 746 covers:
-   fuel pipework downstream of and including the manual isolating valve;
-   combustion air supply (including oxygen and oxygen enriched combustion air) and flue gas system;
-   burner(s), burner system and ignition device;
-   functional requirements for safety related control system.
This part of EN 746 applies to any oxidation with air or other gases containing free oxygen of gaseous and liquid fuels or any combustion of them to release thermal energy in TPE.
For thermal or catalytic post combustion and waste incineration, this part of EN 746 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 part of EN 746 is within the maximum pressure/size relationship of category I as described in normative Annex E.
This part of EN 746 also gives the necessary requirements regarding information for use.
This part of EN 746 does not cover hazards from heating generated by electricity.
This part of EN 746 does not deal with the hazards created by the release of flammable substances from the products processed in the TPE.
This part of EN 746 is not applicable to combustion and fuel handling systems:
-   of gas welding and allied processes;
-   up-stream of the TPE manual isolating valve.
This part of EN 746 is not applicable to electrical cabling and power cabling upstream of the TPE control panel/protective system.

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This document specifies the general safety requirements common to industrial furnaces and associated processing equipment (TPE).
This document deals with the significant hazards, hazardous situations or hazardous events relevant to TPE, as listed in Annex A, when TPE is used as intended and also under conditions of misuse that are reasonably foreseeable by the manufacturer.
This document specifies the requirements intended to be met by the manufacturer to ensure the safety of persons and property during commissioning, start-up, operation, shut-down, maintenance periods and dismantling, as well as in the event of foreseeable faults or malfunctions that can occur in the equipment.
These general safety requirements apply to all TPE, unless an exception is given in other parts of EN°746 dealing with specific equipment. The provisions of other parts of EN°746 that directly apply to specific types of TPE take precedence over the provisions of this document.
This document is not applicable to blast furnaces, converters (in steel plants), boilers, fired heaters (including reformer furnaces or cracking furnaces) in the petrochemical and chemical industries or equipment not covered under EN°ISO°12100.
This document or parts of this document can be used to blast furnaces, converters (in steel plants), boilers, fired heaters (including reformer furnaces or cracking furnaces) in the petrochemical and chemical industries or equipment not covered under EN°ISO°12100

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This part of ISO 13577 specifies the safety requirements for combustion and fuel handling systems that are part of industrial furnaces and associated processing equipment (TPE).
NOTE The general safety requirements common to TPE are provided in ISO 13577-1 (See introduction) Annex°B of ISO 13577-1 also includes a list of processes for which industrial furnaces and heating systems covered by ISO 13577 may be used.
This part of ISO 13577 deals with significant hazards, hazardous situations and events relevant to combustion and fuel handling systems as listed in Annex E, when used as intended and under the conditions foreseen by the manufacturer.
This part of ISO 13577 covers:
— fuel pipework downstream of and including the manual isolating valve;
— combustion air supply (including oxygen and oxygen enriched combustion air) and flue gas system;
— burner(s), burner system and ignition device;
— functional requirements for safety related control system.
This part of ISO 13577 applies to any oxidation with air or other gases containing free oxygen of gaseous and liquid fuels or any combustion of them to release thermal energy in TPE.
For thermal or catalytic post combustion and waste incineration, this part of ISO 13577 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 part of ISO 13577 is within the maximum pressure/size relationship of category I as described in normative Annex A.
This part of ISO 13577 also gives the necessary requirements regarding information for use.
This part of ISO 13577 does not cover hazards from heating generated by electricity.
This part of ISO 13577 does not deal with the hazards created by the release of flammable substances from the products processed in the TPE.
This part of ISO 13577 is not applicable to combustion and fuel handling systems:
— of gas welding and allied processes
— up-stream of the TPE manual isolating valve.
This part of ISO 13577 is not applicable to blast furnaces, converters (in steel plants), boilers, fired heaters (including reformer furnaces) in the petrochemical and chemical industries.
This part of ISO 13577 is not applicable to electrical cabling and power cabling upstream of the TPE control panel/protective system.
This document is not applicable to combustion and fuel handling systems manufactured before the date of its publication.

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8. Scope
This document applies for new steel converter and its associated equipment (hereinafter referred to as converter plant) used in the process of carbon or stainless steel making as defined in 3.1 and illustrated in Annex B.
This document deals with significant hazards, hazardous situations and events relevant to the converter plant. It covers the intended use and foreseeable misuse.
This document specifies the safety requirements to be met during design, transport, setting up/installation, assembly, commissioning, operation, maintenance (as described in Clause 5) and decommissioning/dis¬assembly of the equipment.
NOTE 1   Assembly does not include erection because national regulations, e.g., national civil engineering laws and regulations or occupational health and safety regulations have to be considered.
This document applies to:
Steel converter and its associated equipment (see Annex B, Figure B.1) for the oxygen steelmaking process
   from charging hot metal/liquid steel and scrap;
   via oxygen refining and stirring;
   temperature measurement and sampling equipment;
   up to tapping including slag retaining device;
   cooling systems;
   maintenance devices (e.g., relining device, tap hole repair device, device for cleaning the converter mouth);
   process related interfaces/interactions (e.g., according to design, controls) to
o   process media,
o   primary and secondary gas cleaning plant,
o   material feeding systems and ladle alloying systems,
o   transfer cars for steel ladle and slag pot, and
o   charging/tapping equipment, e.g., crane, scrap chute, ladles and slag pots.
This document does not cover safety requirements for:
   usage of process media other than oxygen, nitrogen, argon and compressed air;
   primary and secondary gas cleaning plants;
   measuring devices with radioactive sources;
   material feeding systems and ladle alloying systems;
   transfer cars for steel ladle and slag pot;
   charging/tapping and de-slagging equipment, e.g., crane, scrap chutes, ladles and slag pots;
   auxiliary winches and hoists.
NOTE 2   For variations of converter process where other gases and process media, e.g., hydrocarbons, fuels, steam, etc. are used, additional safety measures have to be considered which are not covered in this safety standard.
NOTE 3   In case of revamping, this document can be used as a guideline for the specific parts to be revamped.

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This part of EN 746 specifies the safety requirements for combustion and fuel handling systems that are part of industrial furnaces and associated processing equipment (TPE).
NOTE   The general safety requirements common to TPE are provided in prEN 746 1:2020 (See introduction).
This part of EN 746 deals with significant hazards, hazardous situations and events relevant to combustion and fuel handling systems as listed in Annex A, when used as intended and under the conditions foreseen by the manufacturer.
This part of EN 746 covers:
-   fuel pipework downstream of and including the manual isolating valve;
-   combustion air supply (including oxygen and oxygen enriched combustion air) and flue gas system;
-   burner(s), burner system and ignition device;
-   functional requirements for safety related control system.
This part of EN 746 applies to any oxidation with air or other gases containing free oxygen of gaseous and liquid fuels or any combustion of them to release thermal energy in TPE.
For thermal or catalytic post combustion and waste incineration, this part of EN 746 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 part of EN 746 is within the maximum pressure/size relationship of category I as described in normative Annex E.
This part of EN 746 also gives the necessary requirements regarding information for use.
This part of EN 746 does not cover hazards from heating generated by electricity.
This part of EN 746 does not deal with the hazards created by the release of flammable substances from the products processed in the TPE.
This part of EN 746 is not applicable to combustion and fuel handling systems:
-   of gas welding and allied processes;
-   up-stream of the TPE manual isolating valve.
This part of EN 746 is not applicable to electrical cabling and power cabling upstream of the TPE control panel/protective system.

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This document specifies the general safety requirements common to industrial furnaces and associated processing equipment (TPE).
This document deals with the significant hazards, hazardous situations or hazardous events relevant to TPE, as listed in Annex A, when TPE is used as intended and also under conditions of misuse that are reasonably foreseeable by the manufacturer.
This document specifies the requirements intended to be met by the manufacturer to ensure the safety of persons and property during commissioning, start-up, operation, shut-down, maintenance periods and dismantling, as well as in the event of foreseeable faults or malfunctions that can occur in the equipment.
These general safety requirements apply to all TPE, unless an exception is given in other parts of EN°746 dealing with specific equipment. The provisions of other parts of EN°746 that directly apply to specific types of TPE take precedence over the provisions of this document.
This document is not applicable to blast furnaces, converters (in steel plants), boilers, fired heaters (including reformer furnaces or cracking furnaces) in the petrochemical and chemical industries or equipment not covered under EN°ISO°12100.
This document or parts of this document can be used to blast furnaces, converters (in steel plants), boilers, fired heaters (including reformer furnaces or cracking furnaces) in the petrochemical and chemical industries or equipment not covered under EN°ISO°12100

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This part of EN 746 specifies the requirements for protective systems used in industrial furnaces and associated processing equipment (TPE).
The functional requirements to which the protective systems apply are specified in the other parts of the EN 746 series.

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8. Scope
This document applies for new steel converter and its associated equipment (hereinafter referred to as converter plant) used in the process of carbon or stainless steel making as defined in 3.1 and illustrated in Annex B.
This document deals with significant hazards, hazardous situations and events relevant to the converter plant. It covers the intended use and foreseeable misuse.
This document specifies the safety requirements to be met during design, transport, setting up/installation, assembly, commissioning, operation, maintenance (as described in Clause 5) and decommissioning/dis¬assembly of the equipment.
NOTE 1   Assembly does not include erection because national regulations, e.g., national civil engineering laws and regulations or occupational health and safety regulations have to be considered.
This document applies to:
Steel converter and its associated equipment (see Annex B, Figure B.1) for the oxygen steelmaking process
   from charging hot metal/liquid steel and scrap;
   via oxygen refining and stirring;
   temperature measurement and sampling equipment;
   up to tapping including slag retaining device;
   cooling systems;
   maintenance devices (e.g., relining device, tap hole repair device, device for cleaning the converter mouth);
   process related interfaces/interactions (e.g., according to design, controls) to
o   process media,
o   primary and secondary gas cleaning plant,
o   material feeding systems and ladle alloying systems,
o   transfer cars for steel ladle and slag pot, and
o   charging/tapping equipment, e.g., crane, scrap chute, ladles and slag pots.
This document does not cover safety requirements for:
   usage of process media other than oxygen, nitrogen, argon and compressed air;
   primary and secondary gas cleaning plants;
   measuring devices with radioactive sources;
   material feeding systems and ladle alloying systems;
   transfer cars for steel ladle and slag pot;
   charging/tapping and de-slagging equipment, e.g., crane, scrap chutes, ladles and slag pots;
   auxiliary winches and hoists.
NOTE 2   For variations of converter process where other gases and process media, e.g., hydrocarbons, fuels, steam, etc. are used, additional safety measures have to be considered which are not covered in this safety standard.
NOTE 3   In case of revamping, this document can be used as a guideline for the specific parts to be revamped.

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ISO 13578:2017 specifies the general safety requirements for electric arc furnaces (EAF) to melt steel not containing radioactive material.
NOTE Radioactive material is considered to be detected in front of the steel plant entrance.
ISO 13578:2017 deals with significant hazards, hazardous situations and events as listed in Table 1 pertinent to EAF, when used as intended and under conditions foreseen by the manufacturer, and also includes foreseeable faults and malfunctions in case of misuse.
ISO 13578:2017 also specifies criteria for the plant and equipment integrated in the production process.
ISO 13578:2017 specifies the requirements to be followed during design to ensure the safety of persons, which are to be met during transport, assembly, commissioning, operation, maintenance and decommissioning of the equipment.
ISO 13578:2017 assumes that installations are operated and maintained by adequately trained personnel. Manual intervention for setting, adjustment and maintenance is accepted as part of the normal use of the equipment.
ISO 13578:2017 covers the following equipment (see Annex B, Tables B.1 and B.2, and Annex C, Figures C.1 and C.2):
- EAF with alternating current (AC) technology;
- EAF with direct current (DC) technology;
- scrap preheating technology;
- associated equipment/devices (e.g. inert gas stirring, carbon and oxygen injection systems).
The following equipment is not covered by ISO 13578:2017:
- induction furnace;
- resistance-arc furnace (e.g. submerged arc furnace);
- electron beam furnace;
- plasma furnace;
- other electrical furnaces used in secondary steelmaking, e.g. ladle furnace.
ISO 13578:2017 does not specify safety requirements for the following equipment, which can be an integral or complementary part of the equipment covered by the scope:
- cranes;
- shell lifting cross beam;
- scrap basket, steel ladle and slag pot;
- transport cars for scrap baskets, steel ladles and slag pots;
- dedusting system;
- "dog house" and "elephant house" (furnace enclosures for environmental reasons);
- alloying system;
- separate scrap drying equipment;
- furnace transformer and high-voltage system;
- robots/manipulators (e.g. for temperature measurement and sampling).

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This part of EN 746 specifies the requirements for protective systems used in industrial furnaces and associated processing equipment (TPE).
The functional requirements to which the protective systems apply are specified in the other parts of the EN 746 series.

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This part of EN 746 specifies safety requirements for atmosphere gas systems and their use in industrial thermo-processing equipment and associated plant, including systems for the production of atmosphere gases by reaction inside the thermo-processing equipment.
It applies to the supply of atmosphere gases, gaseous and liquid additions to, and their removal from industrial thermo-processing equipment and associated plant, confined to equipment integrated in the thermo-processing and associated plant.
This part of EN 746 also details the anticipated significant hazards associated with atmosphere gas systems and their use in industrial thermo-processing equipment and specifies the appropriate preventative measures for the reduction or elimination of these hazards.
This part of EN 746 does not apply to atmosphere process gases, essential safety equipment, start-up, operation and shut-down of thermo-processing plant for semi-conductor devices for which special additional engineering requirements are necessary.
This part of EN 746 specifies the requirements to be met to ensure the safety of persons and property during commissioning, start up, operation, shut down and maintenance, as well as in the event of foreseeable faults or malfunctions which can occur in the equipment. It specifies the safety requirements at stages in the life of the equipment, and its design, ordering, construction and use.
This part of EN 746 applies to equipment which is placed on the market after the date of issue of this standard.
The hazards covered by this Part of EN 746 are listed in clause 4.
A table of typical atmosphere gases is given in Annex A.

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This part of EN 746 specifies safety requirements for atmosphere gas systems and their use in industrial thermo-processing equipment and associated plant, including systems for the production of atmosphere gases by reaction inside the thermo-processing equipment.
It applies to the supply of atmosphere gases, gaseous and liquid additions to, and their removal from industrial thermo-processing equipment and associated plant, confined to equipment integrated in the thermo-processing and associated plant.
This part of EN 746 also details the anticipated significant hazards associated with atmosphere gas systems and their use in industrial thermo-processing equipment and specifies the appropriate preventative measures for the reduction or elimination of these hazards.
This part of EN 746 does not apply to atmosphere process gases, essential safety equipment, start-up, operation and shut-down of thermo-processing plant for semi-conductor devices for which special additional engineering requirements are necessary.
This part of EN 746 specifies the requirements to be met to ensure the safety of persons and property during commissioning, start up, operation, shut down and maintenance, as well as in the event of foreseeable faults or malfunctions which can occur in the equipment. It specifies the safety requirements at stages in the life of the equipment, and its design, ordering, construction and use.
This part of EN 746 applies to equipment which is placed on the market after the date of issue of this standard.
The hazards covered by this Part of EN 746 are listed in clause 4.
A table of typical atmosphere gases is given in Annex A.

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