Safety of Machinery - Safety requirements for hot flat rolling mills

This European Standard defines the general safety requirements for hot rolling mills for flat products as defined in 3.1.
This European Standard deals with significant hazards, hazardous situations and events relevant to hot rolling mills for flat products. It deals not only with circumstances where the machinery is used as intended, but also includes other conditions foreseen by the manufacturer, such as foreseeable faults, malfunctions or misuse (see Clauses 4 and 5).
This European standard applies to: Machinery and equipment used for the manufacturing of metal hot rolled flat products from the material supply from (1), via the mill stands (2), to the exit (5) (see Figure 1).
The following equipment is outside the scope of this standard:
- furnaces in accordance with EN 746-1, EN 746-2 and EN 746-3;
- continuous casting machines according to EN 14753;
- hook conveyors according to EN 619;
- roll shop equipment;
- storage equipment (e. g., high-bay warehouses);
- cranes, fork lifts, trucks and railway trucks and other vehicles.
This European standard is not applicable to hot rolling mills for flat products, manufactured before the date of publication of this standard by CEN.

Sicherheit von Maschinen - Sicherheitsanforderungen an Warmflachwalzwerke

Diese Europäische Norm spezifiziert die allgemeinen Sicherheitsanforderungen von Warmwalzwerken für
Flachprodukte wie in 3.1. beschrieben.
Diese Europäische Norm behandelt die für Warmflachwalzwerke zutreffenden Gefährdungen, Gefährdungssituationen
und -ereignisse. Sie behandelt nicht nur die Gegebenheiten, bei denen die Maschinen
bestimmungsgemäß genutzt wird, sondern beinhaltet auch andere Bedingungen, die der Hersteller in Betracht
gezogen hat, wie vorhersehbare Fehler, Fehlfunktionen oder fehlerhafte Nutzung (siehe Abschnitte 4 und 5).
Diese Norm umfasst: Maschinen und Ausrüstungen zur Herstellung von warmgewalzten Flacherzeugnissen
aus Metall von der Materialbeschickungsstation (1) über die Walzstationen (2) zum Auslauf (5) (siehe Bild 1).

Sécurité des machines - Prescriptions de sécurité relatives aux laminoirs à chaud pour produits plats

La présente Norme européenne spécifie les prescriptions générales de sécurité pour les laminoirs à chaud
pour produits plats comme défini en 3.1.
La présente Norme européenne traite des phénomènes dangereux significatifs, des situations et événements
dangereux associés aux laminoirs à chaud pour produits plats. Elle ne prend pas seulement en compte les
conditions liées à l’utilisation normale de la machine mais elle inclut aussi d’autres conditions prévues par le
fabricant, comme les défauts, les dysfonctionnements ou le mauvais usage prévisible (voir Articles 4 et 5).
La présente Norme européenne s’applique aux : installations et équipements utilisés pour la fabrication de
produits métalliques plats laminés à chaud depuis le poste d’alimentation en matière (1) jusqu’à la sortie (5)
vers le stockage en passant par les postes de formage (2) (voir Figure 1).

Varnost strojev - Varnostne zahteve za valjarne (vroče valjanje)

General Information

Status
Published
Publication Date
30-Sep-2008
Current Stage
9092 - Decision on results of review/2YR ENQ - revise - Review Enquiry
Due Date
04-Jun-2018
Completion Date
28-Jan-2019

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Sicherheit von Maschinen - Sicherheitsanforderungen an WarmflachwalzwerkeSécurité des Machines - Prescriptions de sécurité relatives aux laminoirs a chaud pour produits platsSafety of Machinery - Safety requirements for hot flat rolling mills25.120.20Rolling, extruding and drawing equipment13.110Varnost strojevSafety of machineryICS:Ta slovenski standard je istoveten z:EN 15093:2008SIST EN 15093:2008en01-december-2008SIST EN 15093:2008SLOVENSKI

STANDARD
SIST EN 15093:2008

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 15093October 2008ICS 77.180 English VersionSafety of Machinery - Safety requirements for hot flat rolling millsSécurité des machines - Prescriptions de sécurité relativesaux laminoirs à chaud pour produits platsSicherheit von Maschinen - Sicherheitsanforderungen anWarmflachwalzwerkeThis European Standard was approved by CEN on 16 August 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 15093:2008: ESIST EN 15093:2008

EN 15093:2008 (E) 2 Contents Page Foreword..............................................................................................................................................................4 Introduction.........................................................................................................................................................5 1 Scope......................................................................................................................................................6 2 Normative References...........................................................................................................................7 3 Terms and definitions...........................................................................................................................9 4 List of significant hazards..................................................................................................................10 5 Safety requirements and/or measures..............................................................................................11 5.1 General requirements for design, planning and risk assessment.................................................11 5.2 List of significant hazards, hazardous situations, safety requirements and/or measures..........16 5.3 Additional safety requirements or measures...................................................................................32 5.4 Noise reduction as a safety requirement..........................................................................................34 6 Verification of the safety requirements and/or measures...............................................................35 7 Information for use..............................................................................................................................36 7.1 General..................................................................................................................................................36 7.2 Warning devices and safety signs.....................................................................................................36 7.3 Minimum marking................................................................................................................................36 7.4 Accompanying documents.................................................................................................................36 7.5 Maintenance manual...........................................................................................................................39 Annex A (normative)

Safety requirements and/or measures for electrical equipment and control systems at hot flat rolling mills..........................................................................................................41 Annex B (normative)

Noise test code.............................................................................................................45 Annex C (normative)

Protection of persons in case of using asphyxiant gases used in fire fighting systems.................................................................................................................................................49 Annex D (informative)

Example for manufacturer's safety instructions for maintenance at hot flat rolling mills...........................................................................................................................................53 Annex E (informative)

Machines and/or equipment covered by this European Standard.........................55 Annex F (informative)

Examples for the inclusion of safety measures.......................................................56 Annex G (informative)

Example for the risk analysis due to interfaces......................................................57 Annex ZA (informative)

Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC.....................................................................................................................58 Annex

ZB (informative)

Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC........................................................................................59 Bibliography......................................................................................................................................................60

SIST EN 15093:2008

EN 15093:2008 (E) 3 Figures Figure 1 — Exemplary layout of a hot flat rolling mill...................................................................................................6 Figure F.1 — Looper secured by a locking pin...........................................................................................................56 Figure G.1 — Diagram of a hypothetical plant indicating potentially hazardous interfaces.......................................57

Tables Table 1 — Significant hazards, hazardous situations, safety requirements and/or measures..................................18 Table 2 — Main noise sources of hot flat rolling mills equipment and exemplary noise reduction measures...........35 Table A.1 — Stop functions........................................................................................................................................43 Table B.1 — Example of declared dual-number noise emission values for work stations and specified measuring points...................................................................................................................................................................48

SIST EN 15093:2008

EN 15093:2008 (E) 4 Foreword This document (EN 15093:2008) has been prepared by Technical Committee CEN/TC 322 “Equipment for making and shaping of metals - Safety requirements”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2009, and conflicting national standards shall be withdrawn at the latest by April 2009. 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 and B, which is an integral part of this document. This European Standard has been elaborated by CEN/TC 322/WG 3, comprising experts from: Denmark, Germany, Italy, Sweden and the United Kingdom. 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 15093:2008

EN 15093:2008 (E) 5 Introduction This European Standard is a type C standard as stated in EN ISO 12100:2003. The machinery concerned and the extent to which hazards, hazardous situations and events are covered are indicated in the scope of this European Standard. When provisions 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 preventative measure is given in the text, this should not be 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. This European Standard assumes that the equipment is operated and maintained by trained personnel. SIST EN 15093:2008

EN 15093:2008 (E) 6 1 Scope This European Standard defines the general safety requirements for hot rolling mills for flat products as defined in 3.1. This European Standard deals with significant hazards, hazardous situations and events relevant to hot rolling mills for flat products. It deals not only with circumstances where the machinery is used as intended, but also includes other conditions foreseen by the manufacturer, such as foreseeable faults, malfunctions or misuse (see Clauses 4 and 5). This European standard applies to: Machinery and equipment used for the manufacturing of metal hot rolled flat products from the material supply from (1), via the mill stands (2), to the exit (5) (see Figure 1).

Key 4 coiler/cooling bed 1 e. g., continuous casting machine (according to

EN 14753) or furnace (according to EN 746-1) 5 coil or plate transport 2 mill stands 6 roll changing device 3 roller tables 7 border of the hot rolling mill Figure 1 — Exemplary layout of a hot flat rolling mill The following equipment is outside the scope of this standard:  furnaces in accordance with EN 746-1, EN 746-2 and EN 746-3;  continuous casting machines according to EN 14753;  hook conveyors according to EN 619;  roll shop equipment;  storage equipment (e. g., high-bay warehouses);  cranes, fork lifts, trucks and railway trucks and other vehicles. This European standard is not applicable to hot rolling mills for flat products, manufactured before the date of publication of this standard by CEN. SIST EN 15093:2008

EN 15093:2008 (E) 7 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 349, Safety of machinery — Minimum gaps to avoid crushing of parts of the human body EN 614-1:2006, 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 626-1, Safety of machinery — Reduction of risks to health from hazardous substances emitted by machinery — Part 1: Principles and specifications for machinery manufacturers EN 842, Safety of machinery — Visual danger signals - General requirements, design and testing EN 894-1, Safety of machinery — Ergonomics requirements for the design of displays and control actuators — Part 1: General principles for human interactions with displays and control actuators EN 894-2, Safety of machinery — Ergonomics requirements for the design of displays and control actuators — Part 2: Displays EN 894-3, Safety of machinery — Ergonomics requirements for the design of displays and control actuators — Part 3: Control actuators EN 953, Safety of machinery — Guards - General requirements for the design and construction of fixed and movable guards EN 981, Safety of machinery — System of auditory and visual danger and information signals EN 982, Safety of machinery — Safety requirements for fluid power systems and their components - Hydraulics EN 983, Safety of machinery — Safety requirements for fluid power systems and their components - Pneumatics EN 999, Safety of machinery — The positioning of protective equipment in respect of approach speeds of parts of the human body EN 1037:1995, Safety of machinery — Prevention of unexpected start-up EN 1063, Glass in building — Security glazing — Testing and classification of resistance against bullet attack EN 1088, Safety of machinery — Interlocking devices associated with guards - Principles for design and selection EN 1299, Mechanical vibration and shock – Vibration isolation of machines — Information for the application of source isolation EN 1837, Safety of machinery — Integral lighting of machines EN 12094-1, Fixed firefighting systems — Components for gas extinguishing systems — Part 1: Requirements and test methods for electrical automatic control and delay devices EN 12198-3, Safety of machinery — Assessment and reduction of risks arising from radiation emitted by machinery — Part 3: Reduction of radiation by attenuation or screening EN 12254, Screens for laser working places — Safety requirements and testing EN 12464-1, Light and lighting — Lighting of work places — Part 1: Indoor work places SIST EN 15093:2008

EN 15093:2008 (E) 8 EN 13478, Safety of machinery — Fire prevention and protection EN 13861, Safety of machinery — Guidance for the application of ergonomics standards in the design of machinery EN 14253, Mechanical vibration – Measurement and calculation of occupational exposure to whole-body vibration with reference to health – Practical guidance EN 15004-1, Fixed firefighting systems — Gas extinguishing systems — Part 1: Design, installation and maintenance (ISO 14520-1:2006, modified) EN 50171, Central power supply systems EN 60204-1:2006, Safety of machinery — Electrical equipment of machines — Part 1: General requirements (IEC 60204-1:2005, modified) EN 60447, Basic and safety principles for man-machine interface — Marking and identification — Actuating principles (IEC 60447:2004) EN 60529, Degrees of protection provided by enclosures (IP code) EN 60825-1, Safety of laser products — Part 1: Equipment classification and requirements (IEC 60825- 1:2007) EN 60825-4, Safety of laser products — Part 4: Laser guards (IEC 60825-4:2006) EN 61310-1, Safety of machinery — Indication, marking and actuation — Part 1: Requirements for visual, auditory and tactile signals (IEC 61310-1:2007) EN 61310-2; Safety of machinery — Indication, marking and actuation — Part 2: Requirements for marking (IEC 61310-2:2007) EN 61496-1, Safety of machinery — Electro-sensitive protective equipment — Part 1: General requirements and tests (IEC 61496-1:2004, modified) 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) 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 13849-1:2006, Safety of machinery — Safety-related parts of control systems — Part 1: General principles for design (ISO 13849-1:2006) SIST EN 15093:2008

EN 15093:2008 (E) 9 EN ISO 13850:2006, Safety of machinery — Emergency stop — Principles for design (ISO 13850:2006) EN ISO 13857, Safety of machinery — Safety distances to prevent hazard zones being reached by upper and lower limbs (ISO 13857:2008) EN ISO 14121-1:2007, 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 3864-1, Graphical symbols — Safety colours and safety signs — Part 1: Design principles for safety signs in workplaces and public areas ISO 6183, Fire protection equipment — Carbon dioxide extinguishing systems for use on premises — Design and installation ISO 7000, 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 12100-1:2003 and the following apply. NOTE Definitions used in EN and ISO standards referred to in this European Standard are also valid for this document. 3.1 machinery and equipment for hot rolling mills for flat products machinery and equipment where metal is hot rolled to flat products

EXAMPLES hot strip, heavy plates.

NOTE Machines and equipment which are covered by this standard are listed in Annex E. 3.2 material metal being hot rolled 3.3 pulpit enclosed room in which the control desk and monitoring facilities for a machine or equipment are located, used as a permanent work place 3.4 control stand free standing control desk (usually situated adjacent to the machine or equipment), used as a temporary work place 3.5 large machinery/equipment interconnected equipment (size > 15 m) of hot flat rolling mills in which several components of the machinery or forming stages are linked by dedicated transport facilities (e. g., roller conveyors, cross-transfer systems) SIST EN 15093:2008

EN 15093:2008 (E) 10 3.6 cobbling material leaving its intended path

3.7 trained personnel persons with the knowledge of systems, background, experience and ability to operate and/or maintain the equipment in the intended use and proper operation of the machinery/equipment 3.8 unauthorized person person not permitted to enter certain areas of the hot flat rolling mills, or to perform certain actions in relation with the operation and/or maintenance of the equipment, because of not having the required specific knowledge and skill and not being properly equipped to avoid the related hazards 3.9 maintenance service, inspection and repair 3.10 modes of operation different modes of operation under which machinery and equipment of hot flat rolling mills (single machines or groups of interconnected parts) can function a) manual mode mode in which every single function of the equipment is controlled by an operator by means of a hold-to-run control or equivalent device (see 3.26 of EN ISO 12100-1:2003) b) semi-automatic mode mode of operation of the machinery consisting of a series of automatic sequences (summary of functions) into which the whole working cycle is subdivided and, at the end of each sequence, started by the operator and then controlled by a programmable electronic system (PES), the operation is automatically stopped, and a new command of the operator is needed to initiate the next sequence c) automatic mode process, e. g., a cycle of successive or parallel sequences, once initiated by the operator, which is totally controlled by a PES and in which the repetition of the working cycle of the machinery takes place (as long as the running conditions are met) without any operator intervention required 3.11 safety layout description of line-related equipment with safety functions to ensure safe operation of the hot flat rolling mill avoiding hazards or hazardous situations for, e. g., unauthorized access or having another line-related safety function (see 5.1.3) 4 List of significant hazards This clause contains all significant hazards, hazardous situations and events, as far as they are dealt with in this standard, identified by risk assessment as significant for this type of machinery and which requires action to eliminate or reduce the risk. The risk identification was determined as follows: a) potentially hazardous situations having significant risks; b) the safety requirements and/or measures which shall be incorporated into the machinery/equipment; c) any special instructions which shall be communicated to the user. The significant hazards and hazardous situations identified are listed in columns 1 and 2 of Table 1. In addition it is important for the manufacturer to carry out an individual risk assessment according to EN ISO 14121-1 to identify any other significant hazard of the machine/equipment. Significant hazards identified in this SIST EN 15093:2008

EN 15093:2008 (E) 11 individual risk assessment but not dealt with in this European Standard shall be reduced by applying the principles of EN ISO 12100-2:2003. The risk assessment shall take into account the interfaces between the machinery and the environment (e. g., other machinery and/or buildings), see Annex G. 5 Safety requirements and/or measures 5.1 General requirements for design, planning and risk assessment Hot flat rolling mills conforming to this European Standard shall comply with the safety requirements and/or measures set out in clause 5 together with those set out in Annexes A and B and the information for use as defined in clause 7.

This European Standard assumes that:  installations 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;  the machinery is used with adequate workplace lighting conforming to EN 12464-1 or to local regulations. In general, risks and associated hazards are production and plant-related. The main differences arising from the processing of different materials in different qualities and the surroundings (i. e. different combination of machines, different boundary conditions, see Annex G). The resulting variety of "different plants" could not be covered in all details in a European Standard. To deal with this fact, an individual risk assessment of the hot flat rolling mill in question shall be carried out (see 4) considering the safety requirements of this European Standard. Where the means of reducing the risk is by the physical arrangement or positioning of the installed machines, the manufacturer shall include in the information for use a reference to the reduction means to be provided, and to any limiting value of the requirement, and, if appropriate, to the means of verification. Where the means of reducing the risk is by a safe system of working the line, the manufacturer shall include in the Information for use details of the system and of the elements of information required by the operating personnel. This shall include protective measures used according to 4.11.9 and 4.11.10 of EN ISO 12100-2:2003 to run a machine for essential operating reasons or in special mode with safety devices suspended or temporarily modified. The manufacturer shall also include in the information for use all details required for a safe operating process under normal operating condition. He shall also describe the specific safety measures in case of special operating modes, e. g., maintenance and adjustment work. The requirements also apply to under floor areas of the plant. 5.1.1 Planning of hot flat rolling mills Manufacturers of hot flat rolling mills are normally not involved in planning the entire plant (e. g., halls, civil works). But in any case they have to take into account the following aspects in order to ensure good placement and safe operation of the hot flat rolling mill:  accessibility;  clearance gaps for maintenance and cleaning;  escape routes;  movement of machinery and material;  safe operation; SIST EN 15093:2008

EN 15093:2008 (E) 12  health and safety at the workplace;  prevention of emissions hazardous to health at the workplace. 5.1.2 Structural assembly The manufacturer shall undertake and record design calculations to show that the structural assembly, e. g., steel sections, auxiliaries, and services, which form part of the equipment are adequate for safety functions under intended use. 5.1.3 Safety layout The manufacturer shall prepare a safety layout document of the whole hot flat rolling mill. The aim of the safety layout is to give information (normally by means of one or more drawings) about the physical position along the hot flat rolling mill of safety related elements like, e. g.,  segregating devices (guards, fences, trip devices, etc.) intended to prevent access to danger areas of the plant;  doors and other points of access (where required with related locking and/or interlocking devices) to the plant;  escape routes (if necessary, e. g., for large plants);  emergency stop buttons;  warning devices and safety signs (warning signs for, e. g., forbidden access, X-rays). The safety layout shall be included in the manufacturer's instructions for use. 5.1.4 Access to operating points All parts of the equipment such as control stands, pulpits, underground areas, inspection and service floors, to which personnel is required to have access, shall be easily and safely accessible. Means of access, such as stairways, walkways, platforms, etc. shall be provided in accordance with EN ISO 14122-1, EN ISO 14122-2, EN ISO 14122-3 and EN ISO 14122-4. Where required, they shall be protected against heat radiation and designed to withstand moving material, tools and jets of high pressure fluids or gases. Surfaces for walking or standing shall be selected so that the risks of slips, trips and falls caused by scale, oil, emulsion and/or lubricant are avoided or minimized. 5.1.5 Access to danger zones 5.1.5.1 Access of unauthorized personnel to hot flat rolling mills is not permitted. In the information for use (e. g., safety layout), the manufacturer shall inform the user about those areas to be considered. 5.1.5.2 In general access to danger zones shall be avoided by guards. Access to danger zones is only permitted after the operation of the equipment has been stopped and the related risks (e. g., stored energy, temperature, radiation) have been isolated according to EN ISO 13849-1 and EN 1037. An exception is only possible taking into account the requirements of 5.1.5.3. Where possible remote monitoring (e. g., cameras, mirrors, probes, etc.) shall be used to prevent the need for personnel access. The relevant category for control devices covering safety functions in relation with access of persons to danger zones during operation or maintenance, shall be selected according to Annex A. 5.1.5.3 For inspection purposes appropriate safety measures and/or intervention procedures shall be applied to allow authorized personnel access to danger zones under operational conditions, e. g., it might be necessary to SIST EN 15093:2008

EN 15093:2008 (E) 13 enter the danger zone at mill stands or drives for inspection. For these specific actions safety measures shall be considered, in particular:  conditions for access: at least operation at reduced speed and other measures like indication to the main pulpit, switching to manual control mode, switching off the X-ray measuring device;  conditions for staying/working, e. g., switching off the fire extinguishing system, hold-to-run control with full overview of the danger zone, operation at reduced speed;  conditions for re-start: access doors shall be closed (taking care that no person is inside the danger zone) and reset-button has been pushed (or similar action). Normal operation speed shall only be achievable if interlocki

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