Safety of machinery - Secondary steelmaking - Machinery and equipment for treatment of liquid steel

This European Standard specifies the general safety requirements for secondary steelmaking machinery and equipment (SSE) as defined in 3.1 to treat liquid steel.
This European Standard covers machinery and equipment involved in the treatment process of liquid steel under vacuum or atmospheric pressure.
This European Standard deals with all significant hazards, hazardous situations and events pertinent to SSE, when used as intended and under conditions foreseen by the manufacturer, but also includes foreseeable faults and malfunctions in case of misuse.
This European Standard specifies the requirements to ensure the safety of persons which are to be met during the design, assembly, transport, commissioning, operation, maintenance and decommissioning of the equipment.
This European Standard assumes that SSE 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.
NOTE 1   Annex B shows examples of SSE.
The following equipment is not covered by the scope of this European Standard:
   cranes;
   fork lift trucks or other transporting equipment;
   ladles;
   equipment for relining and preheating in the relining area;
   burners according to EN 746-2;
   dust and fume exhaust 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 standard (see 5.2.3).
This European Standard is not applicable to SSE manufactured before the date of publication of this standard in the Official Journal.

Sicherheit von Maschinen- Sekundärmetallurgie - Maschinen und Anlagen zur Behandlung von Flüssigstahl

Diese Europäische Norm spezifiziert die allgemeinen Sicherheitsanforderungen, die durch den Hersteller von Ausrüstungen für die Sekundärmetallurgie, entsprechend der Definition von Maschinen in der EN 292-1, zu erfüllen sind. Sie beschreibt die vorhersehbaren, signifikanten Gefährdungen, Gefährdungssituationen und Ereignisse von Anlagen und bestimmten Ausrüstungen, aus denen sich die Anlage zusammensetzt; sie beschreibt nicht die kompletten Gesundheits- und Sicherheitsanforderungen für jede spezielle Ausrüstung. Sie zeigt vorbeugende Maßnahmen zur Vermeidung von Gefährdungen und zur Reduzierung von Risiken auf. Sie behandelt nicht nur die Gegebenheiten, bei denen die Maschine bestimmungsgemäß genutzt wird, sondern beinhaltet auch andere vom Hersteller vorgesehenen Zustände, wie vorhersehbare Fehler, Fehlfunktionen oder missbräuchliche Nutzung.
Diese Europäische Norm enthält die zu erfüllenden Anforderungen, um die Sicherheit von Personen während der Konstruktion, des Baus, des Transports, der Inbetriebnahme, des Betriebs, der Wartung und der Außerbetriebnahme sicherzustellen.
Diese Norm geht davon aus, dass die Anlagen von entsprechend geschultem und fähigem Personal bedient und gewartet werden. Manuelles Eingreifen zur Einstellung, Anpassung und Wartung wird als Teil des Normalbetriebes der Ausrüstung akzeptiert.
Diese Norm geht davon aus, dass die Maschinen bei entsprechender Arbeitsplatzbeleuchtung gemäß prEN 12464-1 oder gemäß lokaler Bestimmungen genutzt werden.
Diese Norm deckt folgende Ausrüstungen von Anlagen der Sekundärmetallurgie ab (siehe 5.2, Tabelle 1):
a) Ausrüstungen zur Materialbeschickung
Ausrüstungen für Lagerung, Beförderung und Zusatz von Material in den flüssigen Stahl.
Beispiele für Ausrüstungenen zur Materialbeschickung sind:
¾ Vorratsbunker;
¾ Förderbänder;
¾ Drahtführungen;
¾ Vakuumverschlüsse;

Sécurité des machines - Métallurgie secondaire - Machines et équipements pour traitement d'acier liquide

La présente Norme européenne spécifie les prescriptions de sécurité générales pour les machines et les
équipements de métallurgie secondaire (EMS), tels que définis en 3.1, pour le traitement d’acier liquide.
La présente Norme européenne couvre les machines et les équipements impliqués dans le processus de
traitement d’acier liquide sous vide ou sous pression atmosphérique.
La présente Norme européenne traite tous les phénomènes, situations et événements dangereux significatifs
pertinents pour les EMS, durant l’utilisation normale et dans des conditions prévues par le fabricant, mais
inclut aussi des défauts et défaillances prévisibles en cas de mauvais usage.
La présente Norme européenne spécifie les prescriptions pour assurer la sécurité des personnes devant être
satisfaites lors de la conception, de l’assemblage, du transport, de la mise en service, du fonctionnement, de
la maintenance et de la mise hors service des équipements.
La présente Norme européenne suppose que les équipements EMS sont utilisés et entretenus par du
personnel compétent ayant reçu une formation appropriée. Une intervention manuelle pour le réglage,
l’ajustage et la maintenance est acceptée comme partie intégrante de l’utilisation normale des équipements.
NOTE 1 L’Annexe B fournit des exemples d’équipements EMS.
La présente Norme européenne ne couvre pas les équipements suivants :
- appareils de levage à charge suspendue ;
- chariots élévateurs à fourche ou autres équipements de transport ;
- poches (de coulée) ;
- équipements de regarnissage et de préchauffage dans la zone de regarnissage ;
- brûleurs selon l’EN 746-2 ;
- systèmes d’évacuation de poussières et de fumées.

Varnost strojev - Sekundarna metalurgija - Stroji in oprema za obdelavo tekočega jekla

General Information

Status
Published
Publication Date
01-Apr-2008
Current Stage
9092 - Decision on results of review/2YR ENQ - revise - Review Enquiry
Due Date
04-Jun-2018
Completion Date
14-Jan-2021

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.MHNODSicherheit von Maschinen - Sekundärmetallurgie - Maschinen und Anlagen zur Behandlung von FlüssigstahlSécurité des machines - Métallurgie secondaire - Machines et équipements pour traitement d'acier liquideSafety of machinery - Secondary steelmaking - Machinery and equipment for treatment of liquid steel77.180Oprema za metalurško industrijoEquipment for the metallurgical industry13.110Varnost strojevSafety of machineryICS:Ta slovenski standard je istoveten z:EN 14677:2008SIST EN 14677:2008en,fr01-julij-2008SIST EN 14677:2008SLOVENSKI

STANDARD
SIST EN 14677:2008

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14677April 2008ICS 77.180 English VersionSafety of machinery - Secondary steelmaking - Machinery andequipment for treatment of liquid steelSécurité des machines - Métallurgie secondaire - Machineset équipements pour traitement d'acier liquideSicherheit von Maschinen- Sekundärmetallurgie -Maschinen und Anlagen zur Behandlung von FlüssigstahlThis European Standard was approved by CEN on 23 February 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36

B-1050 Brussels© 2008 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14677:2008: ESIST EN 14677:2008

EN 14677:2008 (E) 2 Contents Page Foreword..............................................................................................................................................................4 Introduction.........................................................................................................................................................5 1 Scope......................................................................................................................................................5 2 Normative references............................................................................................................................6 3 Terms and definitions...........................................................................................................................8 4 List of significant hazards..................................................................................................................10 5 Safety requirements and/or measures..............................................................................................11 5.1 General design requirements.............................................................................................................11 5.1.1 General..................................................................................................................................................11 5.1.2 Site inspection.....................................................................................................................................11 5.1.3 Linked equipment................................................................................................................................11 5.1.4 Safety layout.........................................................................................................................................12 5.1.5 Access..................................................................................................................................................12 5.1.6 Safety control system.........................................................................................................................13 5.1.7 Electrical power supply.......................................................................................................................13 5.1.8 Electrical low voltage supply..............................................................................................................13 5.1.9 Fluid systems carrying or containing fluids.....................................................................................13 5.1.10 Hydraulic, pneumatic, gas, cooling and lubrication systems.........................................................13 5.1.11 Ergonomic principles..........................................................................................................................14 5.1.12 Harmful areas.......................................................................................................................................14 5.1.13 Personal protective equipment..........................................................................................................15 5.1.14 Warning devices and safety signs.....................................................................................................15 5.1.15 Operators positions.............................................................................................................................15 5.1.16 Local control box.................................................................................................................................16 5.1.17 Loss of energy.....................................................................................................................................16 5.1.18 Media supply and discharge...............................................................................................................16 5.1.19 Exchange of lances.............................................................................................................................16 5.1.20 Surface temperatures, heat radiation................................................................................................16 5.1.21 Fluids to be discharged to drains......................................................................................................16 5.1.22 Electrode clamp...................................................................................................................................17 5.1.23 Grounding of mechanical ladle furnace parts..................................................................................17 5.1.24 Emergency stop...................................................................................................................................17 5.1.25 Fire protection......................................................................................................................................17 5.2 List of significant hazards, hazardous situations, safety requirements and/or measures..........17 5.2.1 General..................................................................................................................................................18 5.2.2 Material addition equipment...............................................................................................................19 5.2.3 Blowing equipment..............................................................................................................................21 5.2.4 Positioning of equipment....................................................................................................................22 5.2.5 Stirring equipment...............................................................................................................................25 5.2.6 Vacuum pump/ventilation equipment................................................................................................26 5.2.7 Vacuum vessel equipment..................................................................................................................28 5.2.8 Media handling equipment.................................................................................................................29 5.2.9 Deslagging equipment........................................................................................................................31 5.2.10 Electrical heating equipment..............................................................................................................31 5.2.11 Temperature measuring and sampling equipment..........................................................................34 5.3 Special requirements for explosion prevention and protection.....................................................34 5.4 Noise reduction as a safety requirement..........................................................................................35 5.4.1 Noise sources......................................................................................................................................35 5.4.2 Noise reduction at source by design.................................................................................................35 SIST EN 14677:2008

EN 14677:2008 (E) 3 5.4.3 Noise reduction by protective measures..........................................................................................35 5.4.4 Noise reduction by information.........................................................................................................35 6 Verification of the safety requirements and/or measures...............................................................36 7 Information for use..............................................................................................................................36 7.1 Signs and warning devices................................................................................................................36 7.2 Accompanying documents.................................................................................................................36 7.2.1 Instruction handbook..........................................................................................................................36 7.2.2 Machine/equipment declaration.........................................................................................................36 7.2.3 Instruction for transportation and assembly....................................................................................36 7.2.4 Information about commissioning and dismantling of the equipment.........................................37 7.2.5 Operating instructions concerning the equipment..........................................................................37 7.2.6 Maintenance manual...........................................................................................................................39 7.3 Minimum marking................................................................................................................................39 7.4 Training of personnel..........................................................................................................................40 Annex A (normative)

Noise test code.............................................................................................................41 A.1 Introduction..........................................................................................................................................41 A.2 Determination of A-weighted sound power level.............................................................................41 A.3 Determination of A-weighted emission sound pressure levels......................................................42 A.3.1 Determination of the emission sound pressure level at specified measuring points.................42 A.3.2 Determination of the emission sound pressure level at work stations.........................................42 A.4 Measurement uncertainty...................................................................................................................42 A.5 Operating conditions..........................................................................................................................42 A.6 Information to be recorded and reported..........................................................................................43 A.7 Declaration and verification of noise emission values...................................................................43 A.8 Examples for workstations at RH-process with ladle furnace........................................................44 Annex B (informative)

Examples for secondary steelmaking equipment...................................................46 Annex C (informative)

Examples of secondary steelmaking processes.....................................................48 Annex ZA (informative)

Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC............................................................................................49 Annex ZB (informative)

Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC........................................................................................50 Annex ZC (informative)

Relationship between this European Standard and the Essential Requirements of EU Directive 94/9/EC..............................................................................................51 Bibliography......................................................................................................................................................52

Figures Figure C.1 — Examples of secondary steelmaking processes...................................................................48

Tables Table 1 — List of significant hazards, hazardous situations, safety requirements and/or measures....18 Table 2 — Examples for operating instructions............................................................................................38 Table A.1 — Example of declared dual-number noise emission values for work stations

and specified measuring points..............................................................................................................45

SIST EN 14677:2008

EN 14677:2008 (E) 4 Foreword This document (EN 14677:2008) has been prepared by Technical Committee CEN/TC 322 “Equipment for making and shaping of metals”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2008, and conflicting national standards shall be withdrawn at the latest by October 2008. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EC Directive(s). For relationship with EC Directive(s), see informative Annex ZA, ZB and ZC, which are an integral part of this document. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.

SIST EN 14677:2008

EN 14677:2008 (E) 5 Introduction This European Standard is a type C standard as stated in EN ISO 12100. The machines and equipment concerned and the extent to which hazards, hazardous situations and events are covered are indicated in the scope of this European Standard. When provision of this type C standard are different from those which are stated in type A or B standards, the provisions of this type C standard take precedence over the provisions of the other standards, for machines that have been designed and built according to the provisions of this type C standard. Where for clarity an example of a preventive measure is given in this European Standard, this should not been considered as the only possible solution. Any other solution leading to the same risk reduction is permissible if an equivalent level of safety is achieved. 1 Scope This European Standard specifies the general safety requirements for secondary steelmaking machinery and equipment (SSE) as defined in 3.1 to treat liquid steel. This European Standard covers machinery and equipment involved in the treatment process of liquid steel under vacuum or atmospheric pressure. This European Standard deals with all significant hazards, hazardous situations and events pertinent to SSE, when used as intended and under conditions foreseen by the manufacturer, but also includes foreseeable faults and malfunctions in case of misuse. This European Standard specifies the requirements to ensure the safety of persons which are to be met during the design, assembly, transport, commissioning, operation, maintenance and decommissioning of the equipment. This European Standard assumes that SSE 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. NOTE 1 Annex B shows examples of SSE. The following equipment is not covered by the scope of this European Standard:  cranes;  fork lift trucks or other transporting equipment;  ladles;  equipment for relining and preheating in the relining area;  burners according to EN 746-2;  dust and fume exhaust 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 standard (see 5.2.3). This European Standard is not applicable to SSE manufactured before the date of publication of this standard in the Official Journal. SIST EN 14677:2008

EN 14677:2008 (E) 6 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 294, Safety of machinery — Safety distance to prevent danger zones being reached by the upper limbs EN 349, Safety of machinery — Minimum gaps to avoid crushing of parts of the human body EN 614-1, Safety of machinery — Ergonomic design principles — Part 1: Terminology and general principles EN 614-2, Safety of machinery — Ergonomic design principles — Part 2: Interactions between the design of machinery and work tasks EN 620:2002, Continuous handling equipment and systems — Safety and EMC requirements for fixed belt conveyors for bulk materials EN 746-2; Industrial thermoprocessing equipment — Part 2: Safety requirements for combustion and fuel handling systems EN 811, Safety of machinery — Safety distances to prevent danger zones being reached by the lower limbs EN 894-3, Safety of machinery — Ergonomics requirements for the design of displays and control actuators — Part 3: Control actuators EN 953:1997, Safety of machinery — Guards — General requirements for the design and construction of fixed and movable guards EN 981, Safety of machinery — Systems of auditory and visual danger and information signals EN 982:1996, Safety of machinery — Safety requirements for fluid power systems and their components — Hydraulics EN 983:1996, Safety of machinery — Safety requirements for fluid power systems and their components — Pneumatics EN 1037, Safety of machinery — Prevention of unexpected start-up EN 1088, Safety of machinery — Interlocking devices associated with guards - Principles for design and selection EN 1127-1, Explosive atmospheres — Explosion prevention and protection — Part 1: Basic concepts and methodology EN 1837, Safety of machinery - Integral lighting of machines EN 12094-1, Fixed firefighting systems — Components for gas extinguishing systems — Part 1: Require-ments and test methods for electrical automatic control and delay devices EN 12464-1, Light and lighting — Lighting of work places — Part 1: Indoor work places EN 13463-1:2001, Non-electrical equipment for potentially explosive atmospheres — Part 1: Basic method and requirements EN 13463-5, Non-electrical equipment intended for use in potentially explosive atmospheres — Part 5: Protection by constructional safety "c" SIST EN 14677:2008

EN 14677:2008 (E) 7 EN 13478, Safety of machinery — Fire prevention and protection prEN 15004-1, Fixed firefighting systems - Gas extinguishing systems - Part 1: Design, installation and maintenance (ISO 14520-1, modified) EN 50171, Central power supply systems EN 60079-0, Electrical apparatus for explosive gas atmospheres — Part 0: General requirements (IEC 60079-0:2004, modified) EN 60079-101), Electrical apparatus for explosive gas atmospheres — Part 10: Classification of hazardous areas (IEC 60079-10:2002) EN 60079-14, Electrical apparatus for explosive gas atmospheres — Part 14: Electrical installations in hazardous areas (other than mines) (IEC 60079-14:2002) EN 60204-1:2006, Safety of machinery — Electrical equipment for machines — Part 1: General requirements (IEC 60204-1:2005, modified) EN 60519-4:2006, Safety in electroheat installations — Part 4: Particular requirements for arc furnace installations (IEC 60519-4:2006) EN 61241-10, Electrical apparatus for use in the presence of combustible dust — Part 10: Classification of areas where combustible dust are or may be present (IEC 61241-10:2004) EN 61241-14, Electrical apparatus for use in the presence of combustible dust — Part 14: Selection and installation (IEC 61241-14:2004) EN 61310-1, Safety of machinery - Indication, marking and actuation - Part 1: Requirements for visual, auditory and tactile signals (IEC 61310-1:1995) EN 61310-2, Safety of machinery - Indication, marking and actuation - Part 2: Requirements for marking (IEC 61310-2:1995) EN ISO 4871:1996, Acoustics - Declaration and verification of noise emission values of machinery and equipment (ISO 4871:1996) EN ISO 7731, Ergonomics - Danger signals for public and work areas - Auditory danger signals (ISO 7731:2003) EN ISO 11064-1, Ergonomic design of control centres — Part 1: Principles for the design of control centres (ISO 11064-1:2000) EN ISO 11202, Acoustics - Noise emitted by machinery and equipment - Measurement of emission sound pressure levels at a work station and at other specified positions - Survey method in situ (ISO 11202:1995) EN ISO 11688-1, Acoustics - Recommended practice for the design of low-noise machinery and equipment - Part 1: Planning (ISO/TR 11688-1:1995) EN ISO 12100-1:2003, Safety of machinery — Basic concepts, general principles for design — Part 1: Basic terminology, methodology (ISO 12100-1:2003) EN ISO 12100-2:2003, Safety of machinery — Basic concepts, general principles for design — Part 2: Technical principles (ISO 12100-2:2003)

1) Will be replaced by prEN 60079-10-1 (2006-07). SIST EN 14677:2008

EN 14677:2008 (E) 8 EN ISO 13732-1, Ergonomics of the thermal environment - Methods for the assessment of human responses to contact with surfaces - Part 1: Hot surfaces (ISO 13732-1:2006) EN ISO 13849-1, Safety of machinery — Safety-related parts of control systems — Part 1: General principles for design (ISO 13849-1:2006) EN ISO 13850:2006, Safety of machinery — Emergency stop — Principles for design (ISO 13850:2006) EN ISO 14121-1, Safety of machinery - Risk assessment - Part 1: Principles (ISO 14121-1:2007) EN ISO 14122-1, Safety of machinery - Permanent means of access to machinery - Part 1: Choice of fixed means of access between two levels (ISO 14122-1:2001) EN ISO 14122-2, Safety of machinery - Permanent means of access to machinery - Part 2: Working platforms and walkways (ISO 14122-2:2001) EN ISO 14122-3, Safety of machinery - Permanent means of access to machinery - Part 3: Stairs, stepladders and guard-rails (ISO 14122-3:2001) EN ISO 14122-4, Safety of machinery - Permanent means of access to machinery - Part 4: Fixed ladders (ISO 14122-4:2004) ISO 7000:2004, Graphical symbols for use on equipment — Index and synopsis 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN ISO 12100:2003 and the following apply. NOTE Definition used in EN and ISO standards referred to in this European Standard are also valid for this European Standard. 3.1 secondary steelmaking machinery and equipment (SSE) machinery and equipment for treatment of liquid steel under vacuum or atmospheric pressure NOTE Annex C shows examples of steelmaking processes. 3.2 additives non metallic additions, e. g., lime, carbon 3.3 alloying material ferrous and/or non-ferrous additions 3.4 chimney effect hot exhaust gas stream to the top of steelmaking vessel 3.5 local control stand free standing local control desks which are usually situated adjacent to machine or equipment to control part of the process SIST EN 14677:2008

EN 14677:2008 (E) 9 3.6 local control box box situated at each electrical drive and only used for maintenance purposes 3.7 pulpit enclosed room in which the control desk and monitoring facilities for a machine or equipment are located and the whole operating process can be controlled 3.8 CO-Scrubber equipment for CO-extraction from cooling water of vacuum pump systems 3.9 ignition sources source of energy that initiates combustion 3.10 mode of operation  manual manual control of the operation of the equipment (e. g., starts/stops all movements)  automatic automatic mode of operation (all interlocks are active) 3.11 slack rope protection protection device with prevent slack rope 3.12 material addition equipment equipment for storage, conveying and adding material into liquid steel 3.13 blowing equipment equipment for blowing gas and/or powder on top or into liquid steel, e. g., chemical heating and desulphurization 3.14 positioning equipment equipment for positioning of components 3.15 stirring equipment equipment for stirring liquid steel 3.16 vacuum pump equipment to reduce pressure with respect to atmospheric conditions 3.17 vacuum vessel equipment equipment to enable a treatment of liquid steel under vacuum conditions 3.18 media handling equipment equipment to store, supply and return media SIST EN 14677:2008

EN 14677:2008 (E) 10 3.19 deslagging equipment equipment to remove slag from the surface of liquid steel 3.20 heating equipment equipment to provide thermal energy to liquid steel and/or vacuum vessels 3.21 temperature and sampling equipment equipment for temperature measurement and samples of liquid steel 3.22 high voltage switch gear (furnace breaker) device to connect and disconnect the ladle furnace to/from the electrical high voltage supply 3.23 take–over–points interfaces at the border of the SSE to auxiliary equipment and for supply and discharge of, e. g., media, energy, material additions and auxiliary equipment 3.24 relining exchange/repair of refractory material, including drying and preheating (usually made in the relining area outside SSE) 3.25 trained personnel persons with the knowledge of systems, background, experience and ability to operate and/or maintain the intended use and proper operation of the equipment 3.26 unauthorised persons person not permitted to enter certain areas or to perform certain actions in the area of the SSE in relation with the operation and/or maintenance equipment, because not having the required specific knowledge and skill, and/or not being properly equipped, in order to avoid the related hazards 4 List of significant hazards This clause contains all significant hazards, hazardous situations and events, as far as they are dealt with in this European Standard, identified by risk assessment as significant for this type of machinery and which requires action to eliminate or reduce the risk. The list of significant hazards, hazardous situations and events are specified in 5.2, Table 1 together with the required safety requirements and measures. In addition it is important that the manufacturer shall identify through their own risk assessment (see EN ISO 14121-1) which of the hazards listed in Table 1 are significant for equipment made to customers specifications. The manufacturer shall establish at the contract stage all foreseeable hazards which may arise from the use of the SSE, and shall give the appropriate preventative measures. Machines/equipment shall be manufactured in accordance with the principles listed in EN ISO 12100-2 to eliminate or reduce the foreseeable risk. SIST EN 14677:2008

EN 14677:2008 (E) 11 5 Safety requirements and/or measures 5.1 General design requirements 5.1.1 General SSE conforming to this European Standard shall comply with the safety requirements and/or measures of this Clause 5 together with those set out in Clause 7 and Annex A. This European Standard assumes that  installations are operated and maintained by adequately trained and competent personnel. Manual interv

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