oSIST prEN 15093:2019

Safety of machinery - Safety requirements for hot flat rolling mills

This document specifies the general safety requirements for hot rolling mills for flat products as defined in 3.1.
This document is applicable to: Plant (machinery, equipment, devices according Annex D) used for the manufacturing of metal hot rolled flat products from the material supply from entry (1), via the mill stands (2) with roll changing devices (6), to the exit (5) (see Figure 1).
Figure 1....
This standard does not cover:
-   thermo process equipment, e.g. in accordance with the EN 746 series;
-   continuous casting machines according to EN 14753;
-   hook conveyors according to EN 619;
-   non-fixed load lifting attachments, e.g. according to EN 13155;
-   roll shop equipment;
-   storage equipment (e.g. high-bay warehouses);
-   cranes, fork lifts, trucks and railway trucks and other vehicles;
-   process technology (e.g. treatment of water, rolling lubricant, compressed air, etc.);
-   separate cleaning system for exhaust air;
-   firefighting system.
NOTE 1   Special requirements for protection of persons in case of using asphyxiant gases used in firefighting system is covered by this document (see Annex C).
This document deals with significant hazards, hazardous situations or hazardous events relevant to hot rolling mills for flat products, when it is used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer. It provides the requirements to be met by the manufacturer to ensure the safety of persons and property during transport, commissioning, operation and de-commissioning, as well as in the event of foreseeable failures or malfunctions that can occur in the equipment.
NOTE 2   For modernization, this document (C-type standard) can be applied for the part to be modernized.

Sicherheit von Maschinen - Sicherheitsanforderungen an Warmflachwalzwerke

Dieses Dokument spezifiziert die allgemeinen Sicherheitsanforderungen von Warmwalzwerken für Flachprodukte wie in 3.1. beschrieben.

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

Le présent document spécifie les prescriptions générales de sécurité pour les laminoirs à chaud pour produits plats, comme défini en 3.1.
Le présent document s'applique aux : installations (machines, équipements, dispositifs selon l'Annexe D) utilisées pour la fabrication de produits métalliques plats laminés à chaud depuis le poste d'alimentation en matière à l'entrée (1) jusqu'à la sortie (5) vers le stockage, en passant par les cages de laminoir (2) et les dispositifs de changement de cylindre (6) (voir Figure 1).
...
Figure 1 - Exemple de disposition générale d'un laminoir à chaud
La présente norme ne s'applique pas aux :
-   équipements de traitement thermique, par exemple, conformément à la série EN 746 ;
-   machines de coulée continue conformément au prEN 14753 ;
-   convoyeurs à crochets conformément à l'EN 619 ;
-   équipements amovibles de prise de charge, par exemple conformément à l'EN 13155 ;
-   équipements de l'atelier des trains de laminoirs ;
-   équipements de stockage (par exemple, entrepôts de stockage en hauteur) ;
-   grues, chariots élévateurs, camions, wagons de marchandises et autres véhicules ;
-   technologies de traitement (par exemple, traitement de l'eau, lubrifiant de laminage, air comprimé, etc.) ;
-   systèmes de nettoyage séparé pour l'air d'échappement ;
-   systèmes de lutte contre l'incendie.
NOTE 1   Les exigences particulières en matière de protection des personnes en cas d'utilisation de gaz asphyxiants utilisés dans les systèmes de lutte contre l'incendie sont couvertes par le présent document (voir Annexe C).
Le présent document traite les phénomènes dangereux, situations dangereuses ou événements dangereux significatifs qui sont pertinents pour les laminoirs à chaud pour produits plats, lorsqu'ils sont utilisés normalement et dans les conditions de mauvais usage raisonnablement prévisibles par le fabricant. Il fournit les exigences que doit respecter le fabricant pour assurer la sécurité des personnes et des biens pendant le transport, la mise en service, l'exploitation et la mise hors service, ainsi qu'en cas de défaillances ou de dysfonctionnements prévisibles qui peuvent survenir sur l'équipement.
NOTE 2   Pour la modernisation, il est recommandé d'appliquer le présent document (norme de type C) pour la partie à moderniser.

Varnost strojev - Varnostne zahteve za valjarne (vroče valjanje)

General Information

• Status: Not Published
• Public Enquiry End Date: 30-Nov-2019
• ICS: 13.110 - Safety of machinery
• ICS: 25.120.20 - Rolling, extruding and drawing equipment
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 5020 - Formal vote (FV) (Adopted Project)
• Start Date: 06-Oct-2021
• Due Date: 24-Nov-2021
• Directive: 2006/42/EC - Directive 2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast)
• Mandate: M/396 - Mandate to CEN and Cenelec for standardisation in the field of machinery
• Ref Project: FprEN 15093 - Safety of machinery - Safety requirements for hot flat rolling mills

RELATIONS

• Revised: SIST EN 15093:2008 - Safety of Machinery - Safety requirements for hot flat rolling mills
• Effective Date: 06-Feb-2019

Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN 15093:2019
01-november-2019
Varnost strojev - Varnostne zahteve za valjarne (vroče valjanje)
Safety of machinery - Safety requirements for hot flat rolling mills
Sicherheit von Maschinen - Sicherheitsanforderungen an Warmflachwalzwerke

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

produits plats
Ta slovenski standard je istoveten z: prEN 15093
ICS:
13.110 Varnost strojev Safety of machinery
25.120.20 Valjalni stroji, stroji za Rolling, extruding and
vbrizgovanje in vlečni stroji drawing equipment
oSIST prEN 15093:2019 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 15093:2019
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oSIST prEN 15093:2019
DRAFT
EUROPEAN STANDARD
prEN 15093
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2019
ICS 77.180 Will supersede EN 15093:2008
English Version
Safety of machinery - Safety requirements for hot flat
rolling mills

Sécurité des machines - Prescriptions de sécurité Sicherheit von Maschinen - Sicherheitsanforderungen

relatives aux laminoirs à chaud pour produits plats an Warmflachwalzwerke

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee

CEN/TC 322.

If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations

which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other

language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC

Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are

aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without

notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 15093:2019 E

worldwide for CEN national Members.
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oSIST prEN 15093:2019
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Contents Page

European foreword ....................................................................................................................................................... 4

1 Scope .................................................................................................................................................................... 6

2 Normative references .................................................................................................................................... 7

3 Terms and definitions ................................................................................................................................... 9

4 Significant hazards and risk assessment ............................................................................................. 15

4.1 General ............................................................................................................................................................. 15

4.2 Interfaces to the linked/integrated equipment ................................................................................ 15

5 Safety requirements and/or protective/risk reduction measures ............................................ 15

5.1 General ............................................................................................................................................................. 15

5.2 General requirements for design, planning and risk assessment .............................................. 16

5.3 List of significant hazards, hazardous situations, safety requirements and/or

protective/risk reduction measures ..................................................................................................... 34

6 Verification/validation of safety requirements/functions and/or protective/risk

reduction measures .................................................................................................................................... 60

6.1 General ............................................................................................................................................................. 60

6.2 Required verification D .............................................................................................................................. 60

6.3 Required verification V, M and T ............................................................................................................ 60

7 Information for use ..................................................................................................................................... 61

7.1 General ............................................................................................................................................................. 61

7.2 Warning devices and safety signs .......................................................................................................... 61

7.3 Minimum marking ....................................................................................................................................... 62

7.4 Accompanying documents ........................................................................................................................ 62

7.5 Training of personnel ................................................................................................................................. 65

8 Supplementary information regarding repair work ....................................................................... 65

Annex A (normative) Requirements for shut-down and stop ..................................................................... 67

Annex B (normative) Noise test code ................................................................................................................... 74

Annex C (normative) Protection of persons in case of using asphyxiant gases used in

firefighting systems ..................................................................................................................................... 79

Annex D (informative) Machines and/or equipment covered by this European Standard .............. 83

Annex E (informative) Example for modes of operation in relation to segregated areas ................ 85

Annex F (informative) Example for the risk analysis due to interfaces .................................................. 86

Annex ZA (informative) Relationship between this European Standard and the Essential

Requirements of EU Directive 2006/42/EC (Machinery Directive) aimed to be

covered............................................................................................................................................................. 87

Bibliography ................................................................................................................................................................. 90

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Figures

Figure 1 — Exemplary layout of a hot flat rolling mill ...................................................................................................... 6

Figure 2 — Schematic representation of the life phases of a hot flat rolling mill ............................................... 16

Figure E.1 — Schematic diagram of modes of operation in relation to segregated areas ............................... 85

Figure F.1 — Diagram of a hypothetical plant indicating potentially hazardous interfaces .......................... 86

Tables

Table 1 — Characteristic tasks and conditions for exemplary operating modes ............................................... 20

Table 2 — Determination of PLr .............................................................................................................................................. 26

Table 3 — Main noise sources of hot flat rolling mills equipment and exemplary noise reduction

measures ................................................................................................................................................................................... 33

Table 4 — Significant hazards, hazardous situations, Safety requirements and/or protective/risk

reduction measures .............................................................................................................................................................. 35

Table A.1 — Shut-down functions .......................................................................................................................................... 69

Table A.2 — Emergency stop and stop functions ............................................................................................................. 71

Table B.1 — Example of declared dual-number noise emission values for work stations and specified

measuring points ................................................................................................................................................................... 78

Table ZA.1 — Correspondence between this European Standard and Annex I of Directive 2006/42/EC

....................................................................................................................................................................................................... 87

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oSIST prEN 15093:2019
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European foreword

This document (prEN 15093:2019) 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 document is currently submitted to the CEN Enquiry
This document will supersede EN 15093:2008-10.

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 EU Directive(s).

For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this

document.
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Introduction
This European Standard is a type C standard as stated in EN ISO 12100:2010.

This document is not applicable to hot rolling mills for flat products manufactured before the date of its

publication.

This document is of relevance, in particular, for the following stakeholder groups representing the

market players with regard to machinery safety:
— machine and/or plant manufacturers (small, medium and large enterprises);

— health and safety bodies (regulators, accident prevention organizations, market surveillance, etc.).

Others can be affected by the level of machinery safety achieved with the means of the document by the

above-mentioned stakeholder groups:
— machine and/or plant users/employers (small, medium and large enterprises);
— service providers, e.g. for maintenance (small, medium and large enterprises).

The above-mentioned stakeholder groups have been given the possibility to participate at the drafting

process of this document.

The machinery concerned and the extent to which hazards, hazardous situations or hazardous events

are covered are indicated in the Scope of this document.

Where for clarity an example of a preventative measure is given, 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.

When requirements of this type-C standard are different from those which are stated in type-A or -B

standards, the requirements of this type-C standard take precedence over the requirements of the other

standards for machines that have been designed and built according to the requirements of this type-C

standard.
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1 Scope

This document specifies the general safety requirements for hot rolling mills for flat products as defined

in 3.1.

This document is applicable to: Plant (machinery, equipment, devices according Annex D) used for the

manufacturing of metal hot rolled flat products from the material supply from entry (1), via the mill

stands (2) with roll changing devices (6), to the exit (5) (see Figure 1).
Key
1 material supply (excluded from the Scope), 4 coiler or plate transport

e.g. continuous casting machine (according to EN 14753) or 5 material removal or plate processing

furnace (according to EN 746-1)
6 roll changing devices

2 mill stands, including e.g. descaling unit, roller tables 7 border of the hot rolling mill

3 cooling line
Figure 1 — Exemplary layout of a hot flat rolling mill
This standard does not cover:
— thermo process equipment, e.g. in accordance with the EN 746 series;
— continuous casting machines according to EN 14753;
— hook conveyors according to EN 619;
— non-fixed load lifting attachments, e.g. according to EN 13155;
— roll shop equipment;
— storage equipment (e.g. high-bay warehouses);
— cranes, fork lifts, trucks and railway trucks and other vehicles;

— process technology (e.g. treatment of water, rolling lubricant, compressed air, etc.);

— separate cleaning system for exhaust air;
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— firefighting system.

NOTE 1 Special requirements for protection of persons in case of using asphyxiant gases used in

firefighting system is covered by this document (see Annex C).

This document deals with significant hazards, hazardous situations or hazardous events relevant to hot

rolling mills for flat products, when it is used as intended and under conditions of misuse which are

reasonably foreseeable by the manufacturer. It provides the requirements to be met by the

manufacturer to ensure the safety of persons and property during transport, commissioning, operation

and de-commissioning, as well as in the event of foreseeable failures or malfunctions that can occur in

the equipment.

NOTE 2 For modernization, this document (C-type standard) can be applied for the part to be modernized.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements 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+A1:2009, 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 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 981, Safety of machinery — System of auditory and visual danger and information signals

EN 1063, Glass in building - Security glazing - Testing and classification of resistance against bullet attack

EN 1299, Mechanical vibration and shock – Vibration isolation of machines — Information for the

application of source isolation

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

EN 13861, Safety of machinery - Guidance for the application of ergonomics standards in the design of

machinery
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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 14520-1d)
EN 50171, Central power supply systems

EN 60204-1:2006, Safety of machinery - Electrical equipment of machines - Part 1: General requirements

(IEC 44/617/CD:2010)

EN 60447, Basic and safety principles for man-machine interface, marking and identification - Actuating

principles (IEC 60447)

EN 60825-1, Safety of laser products — Part 1: Equipment classification and requirements (IEC 60825- 1)

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,

acoustic and tactile signals (IEC 61310-1:)

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)

EN 62598, Nuclear instrumentation - Constructional requirements and classification of radiometric

gauges (IEC 62598)
EN ISO 361, Basic ionizing radiation symbol (ISO 361)

EN ISO 4413, Hydraulic fluid power - General rules and safety requirements for systems and their

components (ISO 4413:2010)

EN ISO 4414, Pneumatic fluid power - General rules and safety requirements for systems and their

components (ISO 4414:2010)

EN ISO 4871:2009, Acoustics - Declaration and verification of noise emission values of machinery and

equipment (ISO 4871:1996)

EN ISO 7010, Graphical symbols - Safety colours and safety signs - Registered safety signs (ISO 7010:2011)

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 - Determination of emission sound

pressure levels at a work station and at other specified positions applying approximate environmental

corrections (ISO 11202)
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EN ISO 12100:2010, Safety of machinery - General principles for design - Risk assessment and risk

reduction (ISO 12100:2010)

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)

EN ISO 13849-1:2015, Safety of machinery - Safety-related parts of control systems - Part 1: General

principles for design (ISO 13849-1:2015)

EN ISO 13850:2015, Safety of machinery - Emergency stop function - Principles for design (ISO 13850)

EN ISO 13855, Safety of machinery - Positioning of safeguards with respect to the approach speeds of

parts of the human body (ISO 13855:2010)

EN ISO 13857, Safety of machinery - Safety distances to prevent hazard zones being reached by upper and

lower limbs (ISO 13857:2008)

EN ISO 14118, Safety of machinery - Prevention of unexpected start-up (ISO 14118)

EN ISO 14119, Safety of machinery - Interlocking devices associated with guards - Principles for design

and selection (ISO 14119)

EN ISO 14120, Safety of machinery - Guards - General requirements for the design and construction of

fixed and movable guards (ISO 14120)

EN ISO 14122-1, Safety of machinery - Permanent means of access to machinery - Part 1: Choice of fixed

means and general requirements of access (ISO 14122-1)

EN ISO 14122-2, Safety of machinery - Permanent means of access to machinery - Part 2: Working

platforms and walkways (ISO 14122-2)

EN ISO 14122-3, Safety of machinery - Permanent means of access to machinery - Part 3: Stairs,

stepladders and guard-rails (ISO 14122-3)

EN ISO 14122-4, Safety of machinery - Permanent means of access to machinery - Part 4: Fixed ladders

(ISO 14122-4)

EN ISO 14123-1, Safety of machinery - Reduction of risks to health resulting from hazardous substances

emitted by machinery - Part 1: Principles and specifications for machinery manufacturers (ISO 14123-1)

ISO 3864-1, Graphical symbols — Safety colours and safety signs — Part 1: Design principles for safety

signs and safety markings

ISO 6183, Fire protection equipment — Carbon dioxide extinguishing systems for use on premises —

Design and installation
3 Terms and definitions

For the purposes of this document, the terms and definitions given in EN ISO 12100:2010 and the

following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

• IEC Electropedia: available at http://www.electropedia.org/
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• ISO Online browsing platform: available at https://www.iso.org/obp
3.1
hot rolling mills for flat products

interconnected equipment for hot rolling of flat material in which several components of the machinery

or forming stages are linked by dedicated transport facilities, including associated devices

Note 1 to entry: Plant and equipment which are covered by this document are listed in Annex D.

3.2
safety layout

graphic overview of the hot rolling mill with arrangement of safety-related elements

3.3
hazard zone
danger zone

any space within and/or around machinery in which a person can be exposed to a hazard

[SOURCE: EN ISO 12100:2010, 3.11]
3.4
take-over-point(s)

point(s) where the hot flat rolling mill is connected to incoming/outgoing material (e.g. coils), media,

electricity (e.g. power supply and communication like input/output parameters)

Note 1 to entry: For example, coil take-over-point: Point where overhead cranes or other transport systems

deposit or remove coils.
3.5
main route(s)
marked traffic route
3.6
safeguard(ing)
guard or protective device
[SOURCE: EN ISO 12100:2010, 3.26]
3.7
reel (sleeve)
cylindrical hollow body used for coiling the material
3.8
trained person(nel)

person 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

3.9
authorized person(nel)

trained person who is instructed by the user to perform a specific task on a specific equipment

Note 1 to entry: In contrast, an unauthorized person does not have the required qualification and is not

adequately equipped, e.g. PPE.
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3.10
maintenance
combination of service, inspection, repair and functional test of the equipment

Note 1 to entry: The purpose is to preserve the working condition or returning to this condition so that the hot

flat rolling mill is able to perform the required function (including safety requirements).

3.10.1
service
measure to maintain the nominal condition

Note 1 to entry: The nominal condition can be maintained in general without dismantling/disassembling major

parts of the equipment, e.g. by cleaning and lubrication of the work equipment as well as addition or replacement

of agents or by replacing tools or operational changing parts (e.g. rolls, knives).

3.10.2
inspection
measure to observe and assess the current condition as well as fault finding

Note 1 to entry: Measures, e.g. measuring, testing, diagnostics including the determination of the causes of wear

or damage and the derivation of the necessary consequences for the continued use.

Note 2 to entry: 3.10.2 does not cover "material inspection", see 3.17.
3.10.3
reconditioning

foreseeable measure to return to the nominal condition requiring dismantling/disassembling

Note 1 to entry: Measure to replace worn parts, damaged parts, or parts having expired the foreseen lifetime

(could require dismantling/disassembling). These parts should meet manufacturers' specifications.

3.10.4
functional test
checking of the functionality of the exchanged or repaired parts

Note 1 to entry: It is maybe required to carry out adjustment work, e.g. test runs, verifying safety functions.

3.11
repair
not foreseeable measure(s) to return to the nominal condition

Note 1 to entry: Measure to replace damaged parts, requires in general dismantling/disassembling. These parts

should meet manufacturers' specification.
3.12
material
metal being hot-rolled
3.13
coil
coiled material
3.14
strip
flat material
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3.15
material supply

devices feeding material to the hot rolling mill and which are linked by control with the hot rolling mill

3.16
material removal

devices removing material from the hot rolling mill and which are linked by control with the hot rolling

mill
3.17
material inspection
observe and assess the current condition of the material
3.18
cobbling
material leaving its intended path
3.19
pulpit

enclosed room in which the control desk and monitoring facilities for a machine or equipment are

located, used as a permanent workstation
3.20
control stand

free standing control desk (usually situated adjacent to the machine or equipment), used as a

temporary workstation
3.21
portable control device

control device which can be used in different places (e.g. control pendant, enabling button, radio

control)
3.22
enabling (control) device

additional manually actuated device used in conjunction with a start control which, when continuously

actuated, permits machine function
[SOURCE: EN ISO 12100:2010, 3.28.2]
3.23
hold-to-run control device

control device which initiates and maintains machine functions only as long as the control device is

actuated
[SOURCE: EN ISO 12100:2010, 3.28.3]
3.24
control mode(s)

single machines or groups of interlinked machines of hot flat rolling mills can be operated by different

control modes

Note 1 to entry: This standard distinguishes between control mode and operating mode. It must be stated that

the meaning is not in line with EN ISO 12100 and EN 60204-1. The operating mode (see 3.25) corresponds to the

"control mode" of EN ISO 12100:2010, 6.2.11.9.
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3.24.1
manual control mode(s)
3.24.1.1
hold-to-run control

every function is controlled by an operator by means of a button or equivalent device according to

3.28.3 of EN ISO 12100:2010

Note 1 to entry: Release of the button/device stops the function (e.g. movement) immediately.

3.24.1.2
single function
functions are started and/or stopped by an operator
3.24.2
semi-automatic control
sequence of functions released once by an operator

Note 1 to entry: The released sequence is automatically stopped at its end. For the initiation of another

sequence, a new command by the operator is required.
3.24.3
automatic control
cycles of successive or parallel sequences once initiated by the operator

Note 1 to entry: If there is no operator intervention, the repetition of the sequences takes place as long as the

running conditions are met.
3.25
operating mode(s)

state of the control system allowing to operate the hot flat rolling mill under defined conditions

Note 1 to entry: Such modes are, e.g. production, safe stop, enabling, adjustment, inspection.

Note 2 to entry: The safety level of the operating mode(s) is defined as result of the risk assessment.

3.25.1
special modes
3.25.1.1
enabling mode
operation of machine functions by using an enabling device (as per 3.23)
3.25.1.2
inching (jog) mode
operation of machine functions using a hold-to-run control device (as per 3.24)
3.25.2
safe stop mode
movement of the involved equipment is prevented through the control system

Note 1 to entry: The required safety level of the safe intervention stop is defined as result of the risk

assessment.

Note 2 to entry: Safe intervention stop is not sufficient as a safety measure to perform repair work because

isolation of the equipment from the relevant energy sources
...