oSIST prEN 15163-2:2020

Machines and installations for the exploitation and processing of natural stone - Safety - Part 2: Requirements for transportable diamond wire saws

This document deals with all significant hazards, hazardous situations and events, as listed in Annex A, which are relevant to transportable diamond wire saws and cutting operations as defined in Clause 3.
This document deals only with transportable diamond wire saws used in quarries for cutting natural stones (e.g. marble, granite), when they are used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer (see Annex A).
This document deals only with transportable diamond wire saws using coated diamond wire as tool.
This document specifies the appropriate technical measures to eliminate or reduce risks arising from the significant hazards.
This document deals all significant hazards that may occur within the expected lifetime of the machinery including the phases of transport, assembly, dismantling, disabling and scrapping.
This document does not deal with the significant hazards arising by the use of other facilities/devices not described in this document, that may be fitted on the machines or that may be used during the work cycle.
This document does not deal with:
a)   operation under extreme ambient conditions (outside the limits defined in EN 60204-1:2018);
b)   upstream and downstream conveying elements, not integrated with transportable diamond wire saws, for transporting of the work-pieces.
This document is not applicable to machines which are manufactured before the date of publication of this document by CEN.

Maschinen und Anlagen zur Gewinnung und Bearbeitung von Naturstein - Sicherheit - Teil 2: Anforderungen für mobile Diamantseilsägen

Dieses Dokument behandelt alle in Anhang A aufgeführten signifikanten Gefährdungen, Gefährdungs-situationen und Gefährdungsereignisse, die für mobile Diamantseilsägen wie in Abschnitt 3 festgelegt maßgebend sind.
Dieses Dokument behandelt ausschließlich mobile Diamantseilsägen, die in Steinbrüchen zum Schneiden von Natursteinen (z. B. Marmor, Granit) verwendet werden, wenn sie bestimmungsgemäß und unter Bedingungen der Fehlanwendung, die vernünftigerweise vom Hersteller vorhersehbar sind, verwendet werden (siehe Anhang A).
Dieses Dokument behandelt ausschließlich mobile Diamantseilsägen mit beschichteten Diamantseil-werkzeugen.
Dieses Dokument legt die entsprechenden technischen Maßnahmen fest, um die aus den signifikanten Gefährdungen resultierenden Risiken zu beseitigen oder zu verringern.
Dieses Dokument behandelt alle signifikanten Gefährdungen, die innerhalb der erwarteten Lebensdauer der Maschinen auftreten können, einschließlich der Phasen Transport, Montage, Demontage, Außerbetriebnahme und Verschrottung.
Dieses Dokument befasst sich nicht mit den signifikanten Gefährdungen, die sich aus der Verwendung anderer in diesem Dokument nicht beschriebener Vorrichtungen/Geräte ergeben, die an den Maschinen angebracht oder während des Arbeitszyklus verwendet werden dürfen.
Dieses Dokument befasst sich nicht mit:
a)   dem Betrieb unter extremen Umgebungsbedingungen (außerhalb der Beschränkungen, die in EN 60204-1:2018 festgelegt sind);
b)   vor  und nachgeschalteten, nicht in mobilen Diamantseilsägen integrierten Förderelementen zum Transport von Werkstücken.
Dieses Dokument gilt nicht für Maschinen, die vor dem Datum der Veröffentlichung dieses Dokuments durch CEN hergestellt wurden.

Machines et installations pour l'exploitation et la transformation de la pierre naturelle - Sécurité - Partie 2 : Prescriptions pour les scies à fil diamanté transportables

Le présent document traite de tous les phénomènes dangereux, situations dangereuses et événements dangereux significatifs, tels qu’énumérés dans l’Annexe A, qui sont pertinents pour les scies à fil diamanté transportables et les opérations de découpe telles que définies dans l’Article 3.
Le présent document traite uniquement des scies à fil diamanté transportables utilisées dans les carrières ou dans les scieries pour couper des pierres naturelles (par exemple, le marbre, le granite), lorsqu’elles sont utilisées normalement et dans les conditions de mauvaise utilisation raisonnablement prévisibles par le fabricant (voir l’Annexe A).
Le présent document traite uniquement des scies à fil diamanté transportables utilisant comme outil un fil diamanté.
Le présent document spécifie les mesures techniques appropriées pour éliminer ou réduire les risques dus aux phénomènes dangereux significatifs.
Le présent document traite de tous les phénomènes dangereux pouvant survenir au cours de la durée de vie prévisible de la machine, y compris les phases de transport, de montage, de démontage, de mise hors service et de mise au rebut.
Le présent document ne traite pas des phénomènes dangereux significatifs engendrés par l’utilisation d’autres installations/dispositifs non décrits dans le présent document, qui peuvent être montés sur les machines ou utilisés pendant le cycle de travail.
Le présent document ne traite pas :
a)   de l’exploitation dans des conditions ambiantes extrêmes (au-delà des limites définies dans l’EN 60204-1:2018) ;
b)   des unités de convoyage amont et aval des pièces usinées, qui ne sont pas intégrées aux scies à fil diamanté transportables.
Le présent document n’est pas applicable aux machines qui ont été fabriquées avant la date de publication du présent document par le CEN.

Stroji in oprema za pridobivanje in obdelavo naravnega kamna - Varnost - 2. del: Zahteve za premične enožične diamantne žage

General Information

• Status: Not Published
• Public Enquiry End Date: 16-Sep-2020
• ICS: 25.100.40 - Saws
• ICS: 73.120 - Equipment for processing of minerals
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 06-Jul-2020
• Due Date: 23-Nov-2020
• Completion Date: 15-Sep-2020
• 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 15163-2 - Machines and installations for the exploitation and processing of natural stone - Safety - Part 2: Requirements for transportable diamond wire saws

RELATIONS

• Revised: SIST EN 15163:2017 - Machines and installations for the exploitation and processing of natural stone - Safety - Requirements for diamond wire saws
• Effective Date: 03-Oct-2018

Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN 15163-2:2020
01-september-2020
Stroji in oprema za pridobivanje in obdelavo naravnega kamna - Varnost - 2. del:
Zahteve za premične enožične diamantne žage

Machines and installations for the exploitation and processing of natural stone - Safety -

Part 2: Requirements for transportable diamond wire saws

Maschinen und Anlagen zur Gewinnung und Bearbeitung von Naturstein - Sicherheit -

Teil 2: Anforderungen für mobile Diamantseilsägen

Machines et installations pour l'exploitation et la transformation de la pierre naturelle -

Sécurité - Partie 2 : Prescriptions pour les scies à fil diamanté transportables
Ta slovenski standard je istoveten z: prEN 15163-2
ICS:
25.100.40 Žagni listi Saws
73.120 Oprema za predelavo rudnin Equipment for processing of
minerals
oSIST prEN 15163-2:2020 en,fr,de

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

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oSIST prEN 15163-2:2020
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oSIST prEN 15163-2:2020
DRAFT
EUROPEAN STANDARD
prEN 15163-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2020
ICS 73.120 Will supersede EN 15163:2017
English Version
Machines and installations for the exploitation and
processing of natural stone - Safety - Part 2: Requirements
for transportable diamond wire saws

Machines et installations pour l'exploitation et la Maschinen und Anlagen zur Gewinnung und

transformation de la pierre naturelle - Sécurité - Partie Bearbeitung von Naturstein - Sicherheit - Teil 2:

2 : Prescriptions pour les scies à fil diamanté Anforderungen für mobile Diamantseilsägen

transportables

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, 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

© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 15163-2:2020 E

worldwide for CEN national Members.
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prEN 15163-2:2020 (E)
Contents Page

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

Introduction .................................................................................................................................................................... 5

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

2 Normative references .................................................................................................................................... 6

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

4 Safety requirements and/or protective measures .......................................................................... 21

4.1 General ............................................................................................................................................................. 21

4.2 Controls ............................................................................................................................................................ 21

4.2.1 Safety and reliability of control systems ............................................................................................. 21

4.2.2 Position of controls ...................................................................................................................................... 21

4.2.3 Starting ............................................................................................................................................................. 22

4.2.4 Normal stop .................................................................................................................................................... 22

4.2.5 Emergency stop ............................................................................................................................................. 23

4.2.6 Mode selection .............................................................................................................................................. 23

4.2.7 Failure of power supply ............................................................................................................................. 24

4.2.8 Failure of the control circuits .................................................................................................................. 24

4.3 Protection against mechanical hazards ............................................................................................... 24

4.3.1 Transport of the machine .......................................................................................................................... 24

4.3.2 Installation and stability of machine .................................................................................................... 25

4.3.3 Tool changing ................................................................................................................................................ 25

4.3.4 Wire tension system .................................................................................................................................... 25

4.3.5 Safety requirements in case of whiplash ............................................................................................. 26

4.3.6 Guarding of transmission parts .............................................................................................................. 29

4.3.7 Requirements for guard materials ........................................................................................................ 30

4.4 Protections against no mechanical hazards ....................................................................................... 30

4.4.1 Fire..................................................................................................................................................................... 30

4.4.2 Noise ................................................................................................................................................................. 30

4.4.3 Electrical hazards ......................................................................................................................................... 31

4.4.4 Ergonomics and handling .......................................................................................................................... 31

4.4.5 Hydraulic and pneumatic components ................................................................................................ 32

4.4.6 Electromagnetic compatibility ................................................................................................................ 32

4.4.7 Isolation ........................................................................................................................................................... 32

4.4.8 Lightning ......................................................................................................................................................... 32

4.4.9 Maintenance ................................................................................................................................................... 33

5 Information for use ..................................................................................................................................... 33

5.1 General ............................................................................................................................................................. 33

5.2 Marking, signs and written warnings ................................................................................................... 33

5.3 Instruction handbook ................................................................................................................................. 34

5.3.1 General ............................................................................................................................................................. 34

5.3.2 Operator’s manual ....................................................................................................................................... 34

5.3.3 Maintenance instructions ......................................................................................................................... 36

Annex A (informative) List of significant hazards ........................................................................................... 38

Annex B (normative) Safety distances for transportable diamond wire saws ..................................... 40

Annex C (normative) Noise-test code ................................................................................................................... 43

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C.1 Introduction.................................................................................................................................................... 43

C.2 Measurement of the A-weighted emission sound pressure level at the operator's

positions or other specified positions ................................................................................................... 43

C.2.1 Basic standards ............................................................................................................................................. 43

C.2.2 Measurement procedure and positions ............................................................................................... 43

C.2.3 Measurement uncertainty ......................................................................................................................... 44

C.3 Determination of A-weighted sound-power level............................................................................. 44

C.3.1 Measurement procedure and positions ............................................................................................... 44

C.3.2 Measurement uncertainty ......................................................................................................................... 44

C.4 Installation, mounting and operating conditions for noise-emission measurement .......... 45

C.5 Information to be recorded and reported ........................................................................................... 45

C.6 Declaration and verification of noise-emission values ................................................................... 47

C.6.1 General ............................................................................................................................................................. 47

C.6.2 Example of a declaration of noise-emission values in the instruction handbook for

transportable diamond wire saws ......................................................................................................... 48

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

requirements of Directive 2006/42/EC aimed to be covered ...................................................... 50

Bibliography ................................................................................................................................................................. 54

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prEN 15163-2:2020 (E)
European foreword

This document (prEN 15163-2:2020) 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 15163-2:2017.

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.

This document deals with safety requirements of transportable diamond wire saws previously treated in

EN 15163:2017 with safety requirements of stationary diamond wire saws, now treated in

prEN 15163-1:2020. As safety requirements related two types of machines have been separated, this

standard edition is completely different from the previous one.

Safety requirements treated in Clause 4, information for use treated in Clause 5 and related annexes have

been deeply modified, in addition, the following changes have been introduced:

— list of the significant hazards has been moved from Clause 4 to Annex A, according to Clause 6.10.3.1

of CEN Guide 414;
— normative references have been modified and updated to Clause 2;

— new terms and definitions have been introduced and improved to Clause 3 (e.g. transportable

diamond wire saw; coated diamond wire, cutting operations);
— Annex ZA has been modified according to the last edition of CEN Guide 414.
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Introduction

This document has been prepared to be a harmonized standard to provide one means of conforming to

the essential health and safety requirements of the Machinery Directive and associated EFTA Regulations.

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 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.

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 deals with all significant hazards, hazardous situations and events, as listed in Annex A,

which are relevant to transportable diamond wire saws and cutting operations as defined in Clause 3.

This document deals only with transportable diamond wire saws used in quarries for cutting natural

stones (e.g. marble, granite), when they are used as intended and under conditions of misuse which are

reasonably foreseeable by the manufacturer (see Annex A).

This document deals only with transportable diamond wire saws using coated diamond wire as tool.

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

significant hazards.

This document deals all significant hazards that may occur within the expected lifetime of the machinery

including the phases of transport, assembly, dismantling, disabling and scrapping.

This document does not deal with the significant hazards arising by the use of other facilities/devices not

described in this document, that may be fitted on the machines or that may be used during the work cycle.

This document does not deal with:

a) operation under extreme ambient conditions (outside the limits defined in EN 60204-1:2018);

b) upstream and downstream conveying elements, not integrated with transportable diamond wire

saws, for transporting of the work-pieces.

This document is not applicable to machines which are manufactured before the date of publication of

this document by CEN.
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

EN 863:1995, Protective clothing — Mechanical properties — Test method: Puncture resistance

EN 1005-2:2003+A1:2008, Safety of machinery — Human physical performance — Part 2: Manual

handling of machinery and component parts of machinery

EN 1005-4:2005+A1:2008, Safety of machinery — Human physical performance — Part 4: Evaluation of

working postures and movements in relation to machinery

EN 13087-3:2000, Protective helmets — Test methods — Part 3: Resistance to penetration

EN 50370-1:2005, Electromagnetic compatibility (EMC) — Product family standard for machine tools —

Part 1: Emission

EN 50370-2:2003, Electromagnetic compatibility (EMC) — Product family standard for machine tools —

Part 2: Immunity

EN 60204-1:2018, Safety of machinery — Electrical equipment of machines — Part 1: General

requirements (IEC 60204-1:2016)
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EN 60529:1991, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989)

EN 61439-1:2011, Low-voltage switchgear and controlgear assemblies — Part 1: General rules

(IEC 61439-1:2011)

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 3746:2010, Acoustics — Determination of sound power levels and sound energy levels of noise

sources using sound pressure — Survey method using an enveloping measurement surface over a reflecting

plane (ISO 3746:2010)

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

components (ISO 4413:2010)

EN ISO 4414:2010, 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 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 11202:2010, 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 11202:2010)

EN ISO 11204:2010, Acoustics — Noise emitted by machinery and equipment — Determination of emission

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

corrections (ISO 11204:2010)

EN ISO 11688-1:2009, Acoustics — Recommended practice for the design of low-noise machinery and

equipment — Part 1: Planning (ISO/TR 11688-1:1995)

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

reduction (ISO 12100:2010)
EN 13236:2019, Safety requirements for superabrasive products

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 13850:2015)

EN ISO 14118:2018, Safety of machinery — Prevention of unexpected start-up (ISO 14118:2017)

As impacted by EN 60529:1991/AC:2006-12, EN 60529:1991/A1:2000, EN 60529:1991/A2:2013 and EN

60529:1991/A2:2013/AC:2019-02.
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EN ISO 14120:2015, Safety of machinery — Guards — General requirements for the design and

construction of fixed and movable guards (ISO 14120:2015)
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:

— ISO Online browsing platform: available at http://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
3.1
transportable diamond wire saw

integrated fed machine, generally used in quarries or similar sites, designed for cutting natural stones

(e.g. marble, granite) by the use of a coated diamond wire as tool; transportable diamond wire saw is

powered by an electric motor as main drive, for cutting natural stones into benches, blocks using an only

coated diamond wire as tool and where the cutting is performed by the movement of the wire joined to

moving back of the machine on its rail

Note 1 to entry: Transportable diamond wire saws are generally intended for outdoor use, usually in quarries.

The machinery, by the use of appropriate provisions and other machines, can be easily transported to several points

of the quarry.

Note 2 to entry: During the cutting operation, the coated diamond wire can be cooled by water.

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Safeguarding devices are not illustrated
Key
1 machine frame 4 idle wheels 7 rail
2 machine head 5 guide wheels 8 main control panel
3 coated diamond wire 6 main drive wheel 9 additional control panel
Figure 1 — Example of a transportable diamond wire saw
3.2
drive unit

power transmission unit which allows the rotation and the transversal movement of machine head

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Safeguarding devices are not illustrated
Key
1 machine head
Figure 2 — Example of machine head rotation
Safeguarding devices are not illustrated
Key
1 machine head
Figure 3 — Example of transversal movement of machine head
3.3
drive wheel
power transmission wheel which allows the rotation of the tool
3.4
guide wheel

not driven wheel mounted on the machine frame which guides the tool entering and exiting the main

drive wheel
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3.5
idle wheel

not driven wheel not mounted on the machine frame which guides the tool along its working path

3.6
main control panel

control device located out of the dangerous zone including the principal controls of the machine

3.7
additional control panel

control device located on the machine frame including control devices only machine setting operation

3.8
idle wheel

not driven wheel not mounted on the machine frame which guides the tool along its working path

3.9
safety function

function of the machine whose failure can result in an immediate increase of the risk(s)

[SOURCE: EN ISO 12100:2010, 3.30]
3.10
safety-related part of a control system
SRP/CS

part of a control system that responds to safety-related input signals and generates safety-related output

signals
[SOURCE: EN ISO 13849-1:2015, 3.1.1]

Note 1 to entry: The combined safety-related parts of a control system start at the point where the safety-related

input signals are initiated (including for example the actuating cam and the roller of the position switch) and end at

the output of the power control elements (including for example the main contacts of the contactor).

Note 2 to entry: If monitoring systems are used for diagnostics, they are also considered as SRP/CS.

3.11
performance level PL

discrete level used to specify the ability of safety-related parts of control systems to perform a safety

function under foreseeable conditions
[SOURCE: EN ISO 13849-1:2015, 3.1.23, 4.5.1]
3.12
coated diamond wire

plastic or rubber assembled diamond wire injected with polymer with no modification of the supporting

steel cable section and used as a tool during the cutting

Note 1 to entry: The polymer, penetrating inside the strands under the threaded diamond beads creates a biting

effect between the steel wire and the beads, reducing the probability of ejection of them in case of whiplash (3.18).

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Key
1 steel wire 3 thermoplastic polymer or vulcanized rubber
2 diamond beads 4 spring
Figure 4 — Example of a coated diamond wire
3.13
damaged wire
coated diamond wire or part of it that no longer meets its safety requirements
3.14
worn wire
coated diamond wire which has lost its cutting power
3.15
remanufactured wire

operation, made by coated diamond wire manufacturer, of remanufacturing of the wire which allows to

obtain again the mechanical features such to satisfy its safety requirements
3.16
wire coupling

connection of two ends of the coated diamond wire forming a ring and allow the execution of the cut

3.17
cutting plane
physical or virtual surface bounded by the coated diamond wire
3.18
whiplash

dangerous movement of the diamond wire that can generate risk of impact and/or ejection of parts of the

diamond wire in case of coated diamond wire breakage
3.19
hazardous area

ground surface around the machine that can be reached by the whipping diamond wire ends in the most

unfavourable conditions (e.g. wire breaking where it leaves the machine frame)
3.20
block

mass of natural stone extracted from a quarry to be processed to a half-finished product

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3.21
cutting operations

excavation of a block from a quarry or the squaring process of the blocks to obtain half-finished product.

Transportable diamond wire saws are provided to work in differ rent configurations depending on the

morphology of the quarry and the type of cutting to be realized
3.21.1
vertical cut

cutting operation where the cutting plane is orthogonal to the rail support surface and the coated

diamond wire has no path variation; coated diamond wire rotation can be clockwise or counter

clockwise; according to the position of the transportable diamond wire saw inside the quarry or

workstation and the path of the coated diamond wire, different types of vertical cutting are defined:

3.21.1.1
mountain vertical cut

typical cutting operation of extraction of a bench of natural stone from the mountain

Safeguarding devices are not illustrated
Key
1 mountain 4 main control panel
2 rail 5 coated diamond wire
3 transportable diamond wire saw
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Figure 5 — Example of a mountain vertical cut
3.21.1.2
mountain side vertical cut

cutting operation where the transportable diamond wire saw is very close to the vertical side of the

quarry
Safeguarding devices are not illustrated
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Key
1 mountain 4 transportable diamond wire saw
2 mountain-side 5 main control panel
3 coated diamond wire
Figure 6 — Example of a mountain-side vertical cut
3.21.1.3
block vertical cut
cutting operation used to square a block
Safeguarding devices are not illustrated
Key
1 b
...