oSIST prEN 13862:2019

Floor cutting-off machines - Safety

This document applies to pedestrian controlled floor sawing machines having power feed, manual feed or hand feed (see 3.2) for sawing, grooving and milling floor surfaces made of concrete, asphalt and similar mineral building materials where the main power is supplied by electric or internal combustion prime engine. The power transmission of floor sawing machines is mechanical or hydraulic.
This document deals with all significant hazards pertinent to floor sawing machines, when they are used as intended and under the conditions foreseen by the manufacturer (see Clause 4). This document specifies the appropriate technical measures to eliminate or reduce risks arising from the significant hazards.
These machines are designed for use with rotating cutting-off wheels for wet and dry cutting. These cutting-off wheels can be either a diamond cutting-off wheel or a boron nitride cutting-off wheel, according to EN 13236.
This document does not apply to:
-   self-propelled ride-on floor sawing machines;
-   machines moving along a rail;
-   hand-held portable cutting off machines for construction materials mounted on a mobile support, to be used as floor saws;
-   remote controlled machines.
This document covers electrical hazards by making reference to relevant European Standards (see 4.2).
Those hazards that are relevant for all mechanical, electrical, hydraulic and other equipment or machinery and that are dealt with in standards for common use are not covered by this document. Reference to pertinent standards is made where such standards are applicable and so far necessary.
In this document, floor sawing machines are called "machines", and cutting-off wheels are called "tools".
This document applies primarily to machines which are manufactured after the date of approval of the standard by CEN.

Bodentrennschleifmaschinen - Sicherheit

Dieses Dokument gilt für mitgängergeführte Bodentrennschleifmaschinen mit maschinellem Vorschub, manuellem Vorschub oder Vorschub von Hand (siehe 3.2) zum Sägen, Schleifen von Rillen und Fräsen von Bodenoberflächen aus Beton, Asphaltbitumen und ähnlichen mineralischen Baumaterialien, wobei die Hauptantriebsenergie durch einen Elektro-, oder Verbrennungsmotor zur Verfügung gestellt wird. Die Kraftübertragung bei Bodentrennschleifmaschinen ist mechanisch oder hydraulisch.
Dieses Dokument behandelt alle signifikanten Gefährdungen, die auf Bodentrennschleifmaschinen zutreffen, wenn sie bestimmungsgemäß und entsprechend den Empfehlungen des Herstellers verwendet werden (siehe Abschnitt 4). Dieses Dokument legt die entsprechenden technischen Maßnahmen fest, um die aus den signifikanten Gefährdungen, Gefährdungssituationen und Gefährdungsereignissen resultierenden Risiken zu beseitigen oder zu verringern.
Diese Maschinen werden mit rotierenden Trennscheiben im Nass- und Trockenschnitt betrieben. Diese Trennscheiben können nach EN 13236 entweder eine Diamanttrennscheibe oder eine Bornitridtrennscheibe sein.
Dieses Dokument gilt nicht für:
-   selbstfahrende Bodentrennschleifmaschinen mit aufsitzendem Bediener;
-   auf Schienen verfahrenden Maschinen;
-   auf einer mobilen Tragvorrichtung montierte handgeführte, tragbare Trennschleifmaschinen für Baumaterialien, die als Bodensägen verwendet werden;
-   ferngesteuerte Maschinen.
Dieses Dokument behandelt elektrische Gefährdungen durch Verweis auf relevante Europäische Normen (siehe 4.2).
Die Gefährdungen, die für alle mechanischen, elektrischen, hydraulischen und andere Einrichtungen von Maschinen relevant sind und in entsprechenden allgemeinen Normen behandelt werden, umfasst dieses Dokument nicht. Soweit erforderlich, wird auf anwendbare Normen dieser Art verwiesen.
In diesem Dokument werden Bodentrennschleifmaschinen als „Maschinen“ bezeichnet und Trennschleifscheiben werden auch als „Werkzeuge“ bezeichnet.
Dieses Dokument gilt hauptsächlich für Maschinen, die nach dem Datum der Zustimmung durch CEN zu dieser Norm hergestellt wurden.

Machines à scier les sols - Sécurité

Le présent document s’applique aux machines de chantier à scier, rainurer et meuler les sols en béton, asphalte bitumineux et matériaux similaires à conducteur accompagnant à avance automatique, poussées ou manuelles (voir 3.2), pour lesquelles l'énergie principale est fournie par un moteur électrique ou thermique. La transmission de l’énergie des scies à sol est mécanique ou hydraulique.
Le présent document traite de tous les phénomènes dangereux significatifs spécifiques aux machines à scier les sols lorsqu'elles sont utilisées normalement et dans les conditions prévues par le fabricant (voir Article 4 ). Le présent document spécifie les mesures techniques appropriées pour éliminer ou réduire les risques dus aux phénomènes dangereux significatifs.
Ces machines sont conçues pour être utilisées avec des disques à tronçonner par arrosage ou à sec. Ces disques à tronçonner peuvent être soit des meules à tronçonner soit des disques à tronçonner à base de diamant ou de nitrure de bore, selon l’EN 13236.
Le présent document ne s’applique pas aux:
-   machines à scier les sols automotrices à conducteur porté;
-   les machines mobiles sur un rail;
-   les machines portatives à tronçonner les matériaux montées sur un support mobile pour être utilisées en scies à sols;
-   machines commandées à distance.
Le présent documentcouvre les risques d'origine électrique par référence aux normes européennes pertinentes (voir 4.2).
Les phénomènes dangereux qui sont spécifiques aux équipements de machine, mécaniques, électriques, hydrauliques, pneumatiques et autres, et qui sont traités dans les normes générales ne sont pas couverts dans Le présent document. La référence à de telles normes pertinentes est faite quand ces normes sont applicables et donc nécessaires.
Dans Le présent document, les machines à scier les sols sont appelées: scies à sol et les disques à tronçonner sont également appelés « outils ».
Le présent document s’applique en premier lieu aux machines fabriquées après la date d’approbation de la norme par le CEN.

Talni odrezovalni stroji - Varnost

General Information

• Status: Not Published
• Public Enquiry End Date: 16-Jan-2019
• ICS: 93.080.10 - Road construction
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 05-Nov-2018
• Due Date: 25-Mar-2019
• Completion Date: 16-Jan-2019
• 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 13862 - Floor cutting-off machines - Safety

RELATIONS

• Revised: SIST EN 13862:2002+A1:2009 - Floor cutting-off machines - Safety
• Effective Date: 11-Oct-2017

Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN 13862:2019
01-januar-2019
Talni odrezovalni stroji - Varnost
Floor cutting-off machines - Safety
Bodentrennschleifmaschinen - Sicherheit
Machines à scier les sols - Sécurité
Ta slovenski standard je istoveten z: prEN 13862
ICS:
93.080.10 Gradnja cest Road construction
oSIST prEN 13862:2019 en,fr,de

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

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oSIST prEN 13862:2019
DRAFT
EUROPEAN STANDARD
prEN 13862
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2018
ICS 93.080.10 Will supersede EN 13862:2001+A1:2009
English Version
Floor cutting-off machines - Safety
Machines à scier les sols - Sécurité Bodentrennschleifmaschinen - Sicherheit

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

CEN/TC 151.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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

© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 13862:2018 E

worldwide for CEN national Members.
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Contents Page

European foreword ....................................................................................................................................................... 5

Introduction .................................................................................................................................................................... 6

1 Scope .................................................................................................................................................................... 7

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

3 Terms and definitions ................................................................................................................................... 8

4 Safety requirements and/or measures ................................................................................................ 11

4.1 General ............................................................................................................................................................. 11

4.2 Mechanical hazards ..................................................................................................................................... 12

4.2.1 General ............................................................................................................................................................. 12

4.2.2 Protection against moving parts ............................................................................................................ 12

4.2.3 Minimum strength of the guard .............................................................................................................. 13

4.2.4 Immobilization, stability ........................................................................................................................... 13

4.2.5 Transport and handling ............................................................................................................................. 13

4.2.6 Fixing of the tool(s) ..................................................................................................................................... 14

4.2.7 Combustion engine-starting device ....................................................................................................... 14

4.2.8 Controls ............................................................................................................................................................ 14

4.2.9 Failure of the power supply ...................................................................................................................... 15

4.3 Electrical hazards ......................................................................................................................................... 15

4.3.1 General ............................................................................................................................................................. 15

4.3.2 Water pump ................................................................................................................................................... 15

4.4 Thermal hazards .......................................................................................................................................... 15

4.5 Exhaust fumes (and gas) ............................................................................................................................ 16

4.6 Machines having a hydraulic power transmission .......................................................................... 16

4.7 Fluid containers ............................................................................................................................................ 16

4.8 Water supply and dust emission ............................................................................................................ 16

4.9 Rotational speed ........................................................................................................................................... 16

4.10 Noise ................................................................................................................................................................. 17

4.10.1 Noise reduction at the design stage ....................................................................................................... 17

4.10.2 Noise emission measurement, declaration and verification procedures ................................ 17

4.11 Vibrations ....................................................................................................................................................... 17

4.11.1 Vibration reduction as a safety requirement ..................................................................................... 17

4.11.2 Vibration measurement, declaration and verification procedures ........................................... 17

4.12 Maintenance ................................................................................................................................................... 17

5 Verification of safety requirements and/or measures ................................................................... 18

6 Information for use ..................................................................................................................................... 18

6.1 General ............................................................................................................................................................. 18

6.2 Marking ............................................................................................................................................................ 18

6.2.1 Regular marking ........................................................................................................................................... 18

6.2.2 Other information ........................................................................................................................................ 18

6.2.3 Warnings ......................................................................................................................................................... 19

6.3 Accompanying documents ........................................................................................................................ 19

6.3.1 Operator’s instructions .............................................................................................................................. 19

6.3.2 Presentation of information and indication ....................................................................................... 22

Annex A (informative) List of significant hazards ......................................................................................... 23

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Annex B (normative) Noise test code - Grade 2 of accuracy ....................................................................... 25

B.1 General ............................................................................................................................................................. 25

B.2 Measurement of the A-weighted emission sound pressure level at the work station

of the operator ............................................................................................................................................... 25

B.3 Determination of the sound power level emitted by the machine ............................................. 26

B.4 Information to be recorded ...................................................................................................................... 26

B.5 Information to be reported ....................................................................................................................... 26

B.6 Noise declaration by the manufacturer ................................................................................................ 26

Annex C (normative) Dimensions of the flanges for cutting-off diamond wheel ................................ 28

C.1 General ............................................................................................................................................................. 28

C.2 Ratios of the diameters of the cutting-off wheel ............................................................................... 28

C.3 Minimal diameter S of the flange ............................................................................................................ 29

C.4 Minimal width R of contact surface of the flange with the cutting-off wheel .......................... 29

C.5 Depth of the clearance T ............................................................................................................................. 29

Annex D (normative) Strength of the guards - State of the art concerning the characteristics

of guards used with cutting-off wheels ................................................................................................. 30

D.1 General ............................................................................................................................................................. 30

D.2 Guard specifications .................................................................................................................................... 30

D.2.1 Calculation method ...................................................................................................................................... 30

D.2.1.1 General ............................................................................................................................................................. 30

D.2.1.2 Formula for determining the translation energy of the fragment of a tool ............................. 32

D.2.1.3 Formula for determining the minimum thickness t of the peripheral part (P) of the

guard material according to the chosen material ............................................................................. 33

D.2.1.4 Formula for determining the minimum thickness t of the side part (L) of the guard ....... 33

D.2.2 Example of a minimum thickness of guards made with E24 grade 2 steel .............................. 33

D.2.3 Other methods for determining the minimum thickness of guards .......................................... 33

Annex E (informative) Pictograms ...................................................................................................................... 34

Annex F (normative) Verification of surface temperature ......................................................................... 35

F.1 Test equipment .............................................................................................................................................. 35

F.2 Test method .................................................................................................................................................... 35

F.3 Test acceptance ............................................................................................................................................. 35

Annex G (normative) Vibration test code ......................................................................................................... 36

G.1 General ............................................................................................................................................................. 36

G.2 Terms and definitions ................................................................................................................................. 36

G.3 Vibration parameters to be measured and determined................................................................. 36

G.4 Instrumentation ............................................................................................................................................ 36

G.4.1 General ............................................................................................................................................................. 36

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G.4.2 Accelerometer ............................................................................................................................................... 36

G.4.3 Fastening of accelerometer ...................................................................................................................... 36

G.4.4 Calibration ...................................................................................................................................................... 37

G.5 Operating conditions, testing and declaration of results .............................................................. 37

G.6 Uncertainties ................................................................................................................................................. 38

G.7 Information to be reported ...................................................................................................................... 38

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

requirements of Directive 2006/42/EC aimed to be covered ..................................................... 40

Bibliography ................................................................................................................................................................. 41

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European foreword

This document (prEN 13862:2018) has been prepared by Technical Committee CEN/TC 151

“Construction equipment and building material machines - Safety”, the secretariat of which is held by

DIN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 13862:2001+A1:2009.

This document has been prepared under a standardization request 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.

The main differences between this standard and EN 13862:2001+A1:2009 are as follows:

a) Normative references (Clause 2) revised and updated;
b) List of significant hazards revised and updated;
c) Requirements for warnings;
d) Requirements for Information for use;
e) Requirements for operator's instructions;
f) Requirements for noise test code;
g) Illustrations and pictograms updated.
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Introduction
This document is a type-C standard as stated in EN ISO 12100.

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

players with regard to machinery safety:
— machine 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 users/employers (small, medium and large enterprises);

— machine users/employees (e.g. trade unions, organizations for people with special needs);

— service providers, e.g. for maintenance (small, medium and large enterprises);
— consumers (in case of machinery intended for use by consumers).

The above-mentioned stakeholder groups have been given the possibility to participate in 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.

When requirements of this type-C standard are different from those which are stated in type-A or type-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 applies to pedestrian controlled floor sawing machines having power feed, manual feed

or hand feed (see 3.2) for sawing, grooving and milling floor surfaces made of concrete, asphalt and

similar mineral building materials where the main power is supplied by electric or internal combustion

prime engine. The power transmission of floor sawing machines is mechanical or hydraulic.

This document deals with all significant hazards pertinent to floor sawing machines, when they are used

as intended and under the conditions foreseen by the manufacturer (see Clause 4). This document

specifies the appropriate technical measures to eliminate or reduce risks arising from the significant

hazards.

These machines are designed for use with rotating cutting-off wheels for wet and dry cutting. These

cutting-off wheels can be either a diamond cutting-off wheel or a boron nitride cutting-off wheel,

according to EN 13236.
This document does not apply to:
— self-propelled ride-on floor sawing machines;
— machines moving along a rail;

— hand-held portable cutting off machines for construction materials mounted on a mobile support, to

be used as floor saws;
— remote controlled machines.

This document covers electrical hazards by making reference to relevant European Standards (see 4.2).

Those hazards that are relevant for all mechanical, electrical, hydraulic and other equipment or

machinery and that are dealt with in standards for common use are not covered by this document.

Reference to pertinent standards is made where such standards are applicable and so far necessary.

In this document, floor sawing machines are called "machines", and cutting-off wheels are called “tools”.

This document applies primarily to machines which are manufactured after the date of approval of the

standard by CEN.
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 206:2013+A1:2016, Concrete — Specification, performance, production and conformity

EN 12096, Mechanical vibration — Declaration and verification of vibration emission values

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

(IEC 60204-1:2005)

EN 60335-1:2012, Household and similar electrical appliances — Safety — Part 1: General requirements

(IEC 60335-1:2010, modified)

EN 60335-2-41:2003, Household and similar electrical appliances — Safety — Part 2-41: Particular

requirements for pumps (IEC 60335-2-41:2002)

EN 60529:1991, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989)

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EN 62841-1:2015, Electric motor-operated hand-held tools, transportable tools and lawn and garden

machinery — Safety — Part 1: General requirements (IEC 62841-1:2014)

EN ISO 3744:2010, Acoustics — Determination of sound power levels and sound energy levels of noise

sources using sound pressure — Engineering methods for an essentially free field over a reflecting plane (ISO

3744:2010)

EN ISO 4413:2010, Hydraulic fluid power — General rules and safety requirements for systems and their

components (ISO 4413:2010)

EN ISO 5349-2:2001, Mechanical vibration — Measurement and evaluation of human exposure to hand-

transmitted vibration — Part 2: Practical guidance for measurement at the workplace (ISO 5349-2:2001)

EN ISO 7010:2012, Graphical symbols — Safety colours and safety signs — Registered safety signs

(ISO 7010:2011)

EN ISO 8041-1, Human response to vibration — Measuring instrumentation — Part 1: General purpose

vibration meters (ISO 8041-1)

EN ISO 11201:2010, Acoustics — Noise emitted by machinery and equipment — Determination of emission

sound pressure levels at a work station and at other specified positions in an essentially free field over a

reflecting plane with negligible environmental corrections (ISO 11201:2010)

EN ISO 12100:2010, Safety of machinery — General principles for design — Risk assessment and risk

reduction (ISO 12100:2010)

EN ISO 13732-1:2008, 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 13849-1:2015, Safety of machinery — Safety-related parts of control systems — Part 1: General

principles for design (ISO 13849-1:2015)

EN ISO 13857:2008, Safety of machinery — Safety distances to prevent hazard zones being reached by

upper and lower limbs (ISO 13857:2008)

EN ISO 14120:2015, Safety of machinery — Guards — General requirements for the design and construction

of fixed and movable guards (ISO 14120:2015)

EN ISO 16089:2015, Machine tools — Safety — Stationary grinding machines (ISO 16089:2015)

EN ISO 20643:2008, Mechanical vibration — Hand-held and hand-guided machinery — Principles for

evaluation of vibration emission (ISO 20643:2005)
ISO 5348, Mechanical vibration and shock — Mechanical mounting of accelerometers

ISO 16063-1, Methods for the calibration of vibration and shock transducers — Part 1: Basic concepts

3 Terms and definitions

For the purposes of this document, the terms and definitions given in EN ISO 12100 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 http://www.iso.org/obp
3.1
floor sawing machine

mobile machine used on sites, designed for sawing, grooving and grinding ground surfaces made of

concrete, asphalt and similar mineral building materials which is pedestrian controlled

3.2
types of machines
floor sawing machines may be of the following types:
3.2.1
hand feed machine

machine in which the feed movement is effected by the pushing action of the operator

3.2.2
machine with manual feed by mechanical means

machine in which the feed movement is effected by manual operation of a crank or wheel

3.2.3
self-propelled machine

machine whose feed movement is obtained by a power source via mechanical or hydraulic power

transmission. Self-propelled machines are pedestrian controlled
3.3
parts of a floor sawing machine
a floor sawing machine generally comprises the parts shown in Figure 1
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Key
1 frame

2 electric motor, or internal combustion engine which generates the power for driving the tool(s)

and which generates the power for the feeding movement to the machine (for self-propelled

machines)
3 tool(s) (illustrated as a cutting-off wheel)
4 control devices for the functions and feed of the machine
5 guards limiting the hazard of contact in dangerous areas
6 water supply system for cooling the diamond cutting-off wheel(s)
7 sawing guiding device of the machine (when necessary)

Note 1 to entry: Figure 1 is an example of one of the many machines available for floor sawing,

grooving and milling. It illustrates the main components in its construction.
Figure 1 — Typical example of a pedestrian controlled floor sawing machine
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3.4
cutting head

assembly comprising the power unit, the rotating tool(s) and its fixing attachment. It may be integral to

the frame of the machine or the drive unit which causes forward movement of the machine along the

ground, in order to perform sawing, grooving or milling operation
3.5
rated spindle speed

speed of the drive spindle, in revolutions per minute (min ) at the rated conditions specified by the

machine manufacturer without cutting-off wheel(s) and under no load
3.6
tool(s)

rotating abrasive tool(s) which perform(s) the cutting operation. The tool(s) is(are) (a) rotating

(segmented) diamond or boron nitride cutting-off wheel according to EN 13236

Note 1 to entry: Abrasive wheels may be mounted either alone or as several units together according to the

design and usage parameters of the machine.
3.7
flange

mounting device including several parts which securely hold and position the rotating tool(s) on the drive

spindle
3.8
tool guard
guard which encloses the non-working part of the rotating tool
3.9
nominal mass

the mass of the machine equipped with all its dismountable parts, but without the tool(s) mounted, the

attached tank(s) being empty
3.10
maximum operating mass

the mass of the machine equipped with all its dismountable parts, ready for use, with the tool(s) mounted

and the attached tank(s) being full
3.11
cutting area
area where only persons are allowed who are instructed in the cutting process
4 Safety requirements and/or measures
4.1 General

Machinery shall comply with the safety requirements and/or protective/risk reduction measures of this

clause. In addition, the machine shall be designed according to the principles of EN ISO 12100:2010 for

relevant but not significant hazards which are not dealt with by this document.

For the application of EN ISO 4413:2010, EN ISO 13857, EN ISO 14120:2015 and EN 60204-1:2006 the

manufacturer shall carry out an adequate risk assessment of their requirements, where it is necessary to

make choices.
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This specific risk assessment should be part of the general risk assessment relating to the hazards not

covered by this document.

Covering each significant individual hazard is sufficient for covering combinations of hazards.

4.2 Mechanical hazards
4.2.1 General

As components and parts shall be manually handled, all the accessible parts, the tool excepted, shall not

present sharp edges or angles/corners which could generate hazards when setting, using, handling, and

maintaining the machine. Burrs resulting from, for example, manufacturing, casting or welding shall be

eliminated and sharp edges shall be smoothed.
4.2.2 Protection against moving parts
4.2.2.1 Transmission parts

Rotating transmission parts, for example drive shafts, couplings, belt drives shall be provided wi

...