SIST EN 12418:2022
(Main)Masonry and stone cutting-off machines for job site - Safety
Masonry and stone cutting-off machines for job site - Safety
This document applies to transportable masonry and stone cutting-off machines stationary during work, principally used on job site building construction for cutting-off stones, other mineral construction materials and composite materials having at least one supporting surface. The power for the tool rotation is supplied by electrical or internal combustion prime motor. This document deals with all significant hazards pertinent to masonry and stone cutting-off machines for job site (see Clause 4), when they are used as intended and under the conditions foreseen by the manufacturer. 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 diamond cutting-off wheels with a continuous rim and/or segmented rim according to prEN 13236:2017.
This document does not apply to:
- metal cutting-off machines;
- wood and timber sawing machines;
- machines with a feed or descent mechanism other than manual, or with a pedal;
- mobile machines on a trolley travelling on the ground;
- hand-held portable grinding and cutting-off machines;
- hand-held portable grinding and cutting-off machines mounted on a support to be used in a fixed position.
This document does not cover the operation of transportable masonry and stone cutting-off machines in potential explosive atmospheres.
This document covers electrical hazards making reference to relevant European Standards (see 4.3).
Those hazards that are relevant for all mechanical, electrical, hydraulic, pneumatic and other equipment of machinery and that are dealt with in standards for common use are not covered by this document. Reference to pertinent standards of this kind is made where such standards are applicable and so far necessary.
In this document, the masonry and stone cutting-off machines for job site construction are called: "cutting-off machines" or "machines", and cutting-off wheels are also called: "tools".
This document applies primarily to machines which are manufactured after the date of approval of the standard by CEN.
Steintrennmaschinen für den Baustelleneinsatz - Sicherheit
Dieses Dokument gilt für transportable Steintrennmaschinen, die während des Einsatzes stationär sind, und die hauptsächlich auf Baustellen zum Trennen von Steinen und anderen mineralischen Baumaterialien sowie Verbundmaterialien verwendet werden, die mindestens eine Auflagefläche besitzen. Die Antriebsenergie für die Drehbewegung des Werkzeugs wird durch einen Elektro- oder eingebauten Verbrennungsmotor zur Verfügung gestellt.
Dieses Dokument behandelt alle signifikanten Gefährdungen, Gefährdungssituationen oder Gefährdungsereignisse, die auf Steintrennmaschinen für den Baustelleneinsatz (siehe Anhang A) zutreffen, wenn sie bestimmungsgemäß und unter Bedingungen, die vom Hersteller als Fehlanwendung vernünftigerweise vorhersehbar sind, verwendet werden. Dieses Dokument legt die geeigneten technischen Maßnahmen zur Beseitigung oder Minderung der Risiken fest, die sich aus den signifikanten Gefährdungen während der Lebensdauer der Maschine ergeben, wie in EN ISO 12100:2010, 5.4, beschrieben.
Diese Maschinen sind zum Einsatz mit drehenden Diamanttrennscheiben mit geschlossenem und/oder segmentierten Rand konstruiert.
Dieses Dokument ist nicht anzuwenden für:
— Metalltrennmaschinen;
— Holzsägemaschinen;
— Maschinen mit einem nicht manuellen Vorschub- oder Absenkmechanismus oder mit einem Pedal;
— mobile Maschinen mit einem Fahrwerk, das auf dem Boden fährt;
— handgeführte, tragbare Schleif- und Trennmaschinen;
— auf einer Tragvorrichtung montierte handgeführte, tragbare Schleif- und Trennmaschinen zur Anwendung in einer feststehenden Position.
Dieses Dokument behandelt nicht den Einsatz von transportablen Steintrennmaschinen in explosionsgefährdeten Bereichen.
In diesem Dokument werden die Steintrennmaschinen für den Baustelleneinsatz als „Trennmaschinen“ oder „Maschinen“ bezeichnet, und Trennscheiben werden auch als „Werkzeuge“ bezeichnet.
Dieses Dokument gilt für Maschinen, die nach dem Datum der Annahme der Norm durch CEN hergestellt wurden.
Scies de chantier à tronçonner les matériaux - Sécurité
Le présent document s’applique aux scies de chantier transportables à tronçonner les matériaux, utilisées en position fixe principalement sur des chantiers de construction pour tronçonner les pierres, les morceaux de bétons, et autres matériaux de construction minéraux et composites ayant au moins une surface portante. Un moteur thermique ou électrique fournit l’énergie pour la rotation de l’outil. Ce document traite de tous les phénomènes dangereux significatifs spécifiques aux scies de chantier à tronçonner les matériaux lorsqu’elles sont utilisées normalement et dans les conditions prévues par le fabricant (voir Article 4). Il 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 diamant à tronçonner segmentés et/ou non segmentés conformément au prEN 13236:2017.
Le présent document ne s’applique pas :
- aux machines à scier le métal ;
- aux machines à scier le bois ;
- aux machines pour lesquelles l’avance du matériau ou la descente du mécanisme de tronçonnage se fait autrement que manuellement ou par pédale ;
- aux machines mobiles sur un rail se déplaçant sur le sol ;
- aux machines portatives à meuler et à tronçonner ;
- aux machines portatives à meuler et à tronçonner les matériaux montés sur un support pour être utilisées en position fixe.
Le présent document ne couvre pas l’utilisation des scies de chantier à tronçonner les matériaux transportables dans les atmosphères explosives.
Il couvre les risques d’origine électrique par référence aux Normes européennes applicables (voir 4.3).
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 ce document. La référence à de telles normes pertinentes est faite quand ces normes sont applicables et donc nécessaires.
Dans le présent document, les scies de chantier à tronçonner les matériaux sont appelées : « scies de chantier » ou « machines » et les disques à tronçonner sont aussi appelés « outils ».
Le présent document s’applique en premier lieu aux machines fabriquées après la date d’approbation de la norme par le CEN.
Rezalniki kamenja na gradbiščih - Varnost
Ta dokument se uporablja za premične rezalnike kamenja na gradbiščih, ki med delom mirujejo in se večinoma uporabljajo na gradbišču za rezanje kamna, drugih mineralnih gradbenih materialov in kompozitnih materialov ter imajo vsaj eno podporno površino. Moč za vrtenje orodja zagotavlja električni ali pogonski motor z notranjim zgorevanjem. Ta dokument obravnava vse velike nevarnosti, ki se navezujejo na rezalnike kamenja na gradbiščih (glej točko 4), kadar se uporabljajo v skladu s predvidenim namenom in pod pogoji, ki jih predvidi proizvajalec. Ta standard določa ustrezne tehnične ukrepe za odpravljanje ali zmanjšanje tveganj, ki izhajajo iz večjih nevarnosti.
Ti stroji so zasnovani za uporabo z vrtljivimi diamantnimi rezalnimi ploščami z neprekinjenim in/ali segmentiranim rezalnim robom v skladu s standardom prEN 13236:2017.
Ta dokument se ne uporablja za:
– rezalnike kovin;
– stroje za žaganje dreves in lesa;
– stroje z mehanizmom za podajanje ali spuščanje, ki ne deluje ročno, ali s pedalom;
– premične stroje na vozičku, ki vozi po tleh;
– ročne prenosne stroje za brušenje in rezanje;
– ročne prenosne stroje za brušenje in rezanje, nameščene na nosilcu, ki se uporabljajo v fiksnem položaju.
Ta dokument ne zajema delovanja premičnih rezalnikov kamenja v potencialno eksplozivnih atmosferah.
Ta dokument zajema električne nevarnosti s sklicevanjem na ustrezne evropske standarde (glej točko 4.3).
Dokument ne zajema nevarnosti, povezanih z vsemi mehanskimi, električnimi, hidravličnimi, pnevmatskimi in drugimi stroji ter opremo, ki jih obravnavajo standardi za splošno uporabo. Kjer so ti standardi uporabni in potrebni, je navedeno sklicevanje nanje.
V tem dokumentu se rezalniki kamenja na gradbiščih imenujejo: »rezalniki« ali »stroji«, rezalne plošče pa se imenujejo tudi: »orodje«.
Ta dokument se uporablja predvsem za stroje, ki so bili izdelani po tem, ko je CEN odobril ta standard.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 12418:2022
01-marec-2022
Nadomešča:
SIST EN 12418:2000+A1:2009
Rezalniki kamenja na gradbiščih - Varnost
Masonry and stone cutting-off machines for job site - Safety
Steintrennmaschinen für den Baustelleneinsatz - Sicherheit
Scies de chantier à tronçonner les matériaux - Sécurité
Ta slovenski standard je istoveten z: EN 12418:2021
ICS:
91.220 Gradbena oprema Construction equipment
SIST EN 12418:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST EN 12418:2022
---------------------- Page: 2 ----------------------
SIST EN 12418:2022
EN 12418
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2021
EUROPÄISCHE NORM
ICS 91.220 Supersedes EN 12418:2000+A1:2009
English Version
Masonry and stone cutting-off machines for job site -
Safety
Scies de chantier à tronçonner les matériaux - Sécurité Steintrennmaschinen für den Baustelleneinsatz -
Sicherheit
This European Standard was approved by CEN on 15 November 2021.
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. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
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.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12418:2021 E
worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN 12418:2022
EN 12418:2021 (E)
Contents Page
European foreword . 5
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 9
4 Safety requirements and/or protective/risk reduction measures . 12
4.1 General . 12
4.2 Mechanical hazard . 12
4.2.1 General . 12
4.2.2 Protection against moving parts . 13
4.2.3 Minimum strength of the guards . 15
4.2.4 Frame and legs . 15
4.2.5 Transport and handling . 15
4.2.6 Fixing of the cutting-off wheel . 15
4.2.7 Combustion engine-starting device . 15
4.2.8 Guiding device of the table and for the material . 16
4.2.9 Control devices . 16
4.2.10 Failure of the power supply . 17
4.3 Electrical hazards . 17
4.3.1 General . 17
4.3.2 Water pump . 17
4.4 Thermal hazards . 17
4.4.1 General . 17
4.4.2 Test method . 17
4.5 Exhaust fumes (and gas) . 17
4.6 Fluid containers . 18
4.7 Protection against water splashes and dust emissions . 18
4.8 Rotational speed . 18
4.9 Noise . 18
4.9.1 Noise reduction at the design stage . 18
4.9.2 Noise emission measurement, declaration and verification procedures . 19
4.10 Vibrations . 19
4.11 Maintenance . 19
5 Verification of safety requirements and/or protective/risk reduction measures . 20
6 Information for use . 22
6.1 General . 22
6.2 Marking, warnings and signs . 22
6.2.1 Marking . 22
6.2.2 Warnings and signs . 22
6.3 Accompanying documents . 23
6.3.1 Instruction handbook . 23
6.3.2 Description of the machine . 23
6.3.3 Instructions for transport, handling and storage of the machine and its
dismountable parts . 24
6.3.4 Instructions for the installation and the use of the machine . 24
2
---------------------- Page: 4 ----------------------
SIST EN 12418:2022
EN 12418:2021 (E)
6.3.5 Maintenance instructions . 26
Annex A (informative) List of significant hazards . 27
Annex B (normative) Noise test code - accuracy grade 2 . 29
B.1 General . 29
B.2 Measurement of the A-weighted emission sound pressure level at the workstation of
the operator . 29
B.3 Determination of the sound power level emitted by the machine . 30
B.4 Measurement uncertainties . 30
B.5 Operating conditions . 31
B.6 Information to be recorded . 32
B.7 Information to be reported . 32
B.8 Noise emission declaration by the manufacturer . 32
Annex C (normative) Dimensions of the flanges for cutting-off diamond wheel . 34
C.1 General . 34
C.2 Ratios to the diameters of the cutting-off wheel . 34
C.3 Minimum diameter S of the flange . 35
C.4 Minimum width R of contact surface of the flange with the cutting-off wheel . 35
C.5 Depth of the clearance T . 35
Annex D (normative) Strength of guards - State of the art concerning the characteristics of
guards used with cutting-off wheels . 36
D.1 General . 36
D.2 Guard specifications for type−1 and −2 machines (see 3.2) . 36
D.2.1 Calculation method . 36
D.2.2 Example of a minimum thickness of guards made with E24 grade-2 steel (alternative
to D.2.1) . 39
D.2.3 Other methods for determining the minimum thickness of guards . 40
Annex E (informative) Safety signs. 41
Annex F (normative) Verification of surface temperature . 43
F.1 Test equipment . 43
F.2 Test method . 43
F.3 Test acceptance . 43
Annex G (informative) Vibration-test code . 44
G.1 General . 44
G.2 Terms and definitions . 44
G.3 Vibration parameters to be measured and determined. 44
G.4 Instrumentation . 44
G.4.1 General . 44
3
---------------------- Page: 5 ----------------------
SIST EN 12418:2022
EN 12418:2021 (E)
G.4.2 Accelerometer . 44
G.4.3 Fastening of accelerometer . 44
G.4.4 Calibration . 45
G.5 Operating conditions, testing and declaration of results . 45
G.6 Uncertainties . 45
G.7 Information . 46
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of EU Directive 2006/42/EC aimed to be covered . 47
Bibliography . 49
4
---------------------- Page: 6 ----------------------
SIST EN 12418:2022
EN 12418:2021 (E)
European foreword
This document (EN 12418:2021) 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 European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by June 2022, and conflicting national standards shall be
withdrawn at the latest by June 2022.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 12418:2000+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 document and EN 12418:2000+A1:2009 are as follows:
a) normative references (Clause 2) revised and updated;
b) list of significant hazards revised and updated;
c) requirements for design of the cutting-off wheel guard;
d) requirements for warnings;
e) requirements for Information for use;
f) requirements for operator's instructions;
g) requirements for noise test code;
h) illustrations and pictograms updated.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: 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 the
United Kingdom.
5
---------------------- Page: 7 ----------------------
SIST EN 12418:2022
EN 12418:2021 (E)
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.
6
---------------------- Page: 8 ----------------------
SIST EN 12418:2022
EN 12418:2021 (E)
1 Scope
This document applies to transportable masonry and stone cutting-off machines stationary during
work, principally used on job site building construction for cutting-off stones, other mineral
construction materials and composite materials having at least one supporting surface. The power for
the tool rotation is supplied by electrical or internal combustion prime motor.
This document deals with all significant hazards, hazardous situations or hazardous events relevant to
masonry and stone cutting-off machines for job site (see Annex A), when they are used as intended and
under conditions of misuse which are reasonably foreseeable by the manufacturer. This document
specifies the appropriate technical measures to eliminate or reduce risks arising from the significant
hazards during the lifetime of the machinery as described in EN ISO 12100:2010, 5.4.
These machines are designed for use with rotating diamond cutting-off wheels with a continuous rim
and/or segmented rim.
This document does not apply to:
— metal cutting-off machines;
— wood and timber sawing machines;
— machines with a feed or descent mechanism other than manual, or with a pedal;
— mobile machines on a trolley travelling on the ground;
— hand-held portable grinding and cutting-off machines;
— hand-held portable grinding and cutting-off machines mounted on a support to be used in a fixed
position.
This document does not cover the operation of transportable masonry and stone cutting-off machines
in potential explosive atmospheres.
In this document, the masonry and stone cutting-off machines for job site construction are called:
“cutting-off machines” or “machines”, and cutting-off wheels are also called: “tools”.
This document applies 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 13236:2019, Safety requirements for superabrasive products
EN 60204-1:2018, Safety of machinery — Electrical equipment of machines — Part 1: General
requirements (IEC 60204-1:2016, modified)
1
EN 60335-2-41:2003, Household and similar electrical appliances — Safety — Part 2-41: Particular
requirements for pumps (IEC 60335-2-41:2002)
1
As impacted by EN 60335-2-41:2003/A1:2004 and EN 60335-2-41:2003/A2:2010.
7
---------------------- Page: 9 ----------------------
SIST EN 12418:2022
EN 12418:2021 (E)
2
EN 60529:1991, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1991)
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 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 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 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 13854:2019, Safety of machinery —Minimum gaps to avoid crushing of parts of the human body
(ISO 13854:2017)
EN ISO 13857:2019, Safety of machinery — Safety distances to prevent hazard zones being reached by
upper and lower limbs (ISO 13857:2019)
EN ISO 14120:2015, Safety of machinery — Guards — General requirements for the design and
construction of fixed and movable guards (ISO 14120:2015)
2
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.
8
---------------------- Page: 10 ----------------------
SIST EN 12418:2022
EN 12418:2021 (E)
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 https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
cutting-off machine
transportable machine used in building and site construction, operating at a stationary position and is
intended for cutting primarily construction material of different weight, shape and dimensions, for
example natural stone, concrete (reinforced or otherwise), bricks, concrete blocks (breeze blocks),
paving slabs or cobblestones, roof tiles and ceramic tiles
Note 1 to entry: The feed of the material, of the table where the material is placed or of the cutting head is made
by hand. The cutting head, if movable for cutting depth, is moved manually or by a pedal.
The power source of a cutting-off machine is an electrical motor or an internal combustion engine with
built-in tank
Note 2 to entry: Cutting-off machine comprising the following parts:
— frame;
— electric motor or an ICE (internal combustion engine) to drive the cutting-off wheel in rotation;
— cutting head;
— rotating cutting-off wheel (see Clause 1);
— material-carrying table (movable and/or tiltable or not);
— cutting-off wheel guard;
— self-containing water tank with an electrical or mechanical water pump or an alternative water supply.
See also Figure 1
9
---------------------- Page: 11 ----------------------
SIST EN 12418:2022
EN 12418:2021 (E)
a) Cutting-off machine with internal b) Cutting-off machine with electric motor
combustion engine
Key
1 frame (incorporating the water tank)
2 legs (demountable or otherwise)
3 cutting head - see 3.3
4 cutting-off wheel - see 3.7
5 electric motor (or engine)
6 handle for moving the cutting head
7 foot pedal for lowering the cutting head (if any)
8 cutting-off wheel guard
9 movable table including material stop for supporting materials to be cut
10 water splash deflector
11 table-guiding tracks
12 water supply system
13 front stop of the table
14 cutting depth stop (for type-1 and −2 machines)
Figure 1 — Examples of cutting-off machines
3.2
types of cutting-off machines
cutting-off machines can be basically classified in four different types defined below:
— Type-1 machine: Machine with a movable table for feeding, having a fixed (permanently or by
means of clamps) or swinging adjustable cutting head (tiltable or not) which is located over the
table;
Note 1 to entry: During the cutting process, the cutting head is in a fixed position.
10
---------------------- Page: 12 ----------------------
SIST EN 12418:2022
EN 12418:2021 (E)
— Type-2 machine: Machine with a fixed table having a horizontally moving cutting head for feeding
and, if applicable, vertically adjustable and tiltable cutting head located over the table;
— Type-3 machine: Machine with a fixed table having a vertically moving cutting head for feeding;
— Type-4 machine: Machine with a fixed or movable table having a fixed or tiltable cutting head, and
only intended for use with continuous rim tools having a maximum diameter of 250 mm. The
feeding is done by hand or by movable table. The motor is located under the table.
See also Figure 2
a) Type-1 machine
b) Type-2 machine
c) Type-3 machine d) Type-4 machine
Figure 2 — Types of masonry and stone cutting-off machines
3.3
cutting head
part of the machine where the cutting-off wheel is attached
Note 1 to entry: It can consist of:
— the fixing means for the cutting-off wheel on the spindle;
— the spindle:
— with direct drive from the power unit;
— with power transmission from the power unit;
11
---------------------- Page: 13 ----------------------
SIST EN 12418:2022
EN 12418:2021 (E)
— the handle;
— the cutting-off wheel guard and the transmission guard (if any) which are movable relative to the
frame.
3.4
rated spindle speed
speed of the drive spindle in revolutions per minute (r/min) at the rated conditions specified by the
machine manufacturer but without cutting-off wheel and under no load
3.5
nominal mass
mass of the cutting-off machine equipped with all its dismountable parts, but without the cutting-off
wheel, the tanks being empty
3.6
maximum operating mass
mass of the cutting-off machine equipped with all its dismountable parts, ready for use, with the
cutting-off wheel mounted and the tanks being full
3.7
cutting-off wheel
rotating abrasive tool which performs the cutting operation
Note 1 to entry: The
...
SLOVENSKI STANDARD
oSIST prEN 12418:2019
01-januar-2019
5H]DOQLNLNDPHQMDQDJUDGELãþLK9DUQRVW
Masonry and stone cutting-off machines for job site - Safety
Steintrennmaschinen für den Baustelleneinsatz - Sicherheit
Scies de chantier à tronçonner les matériaux - Sécurité
Ta slovenski standard je istoveten z: prEN 12418
ICS:
91.220 Gradbena oprema Construction equipment
oSIST prEN 12418:2019 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
oSIST prEN 12418:2019
---------------------- Page: 2 ----------------------
oSIST prEN 12418:2019
DRAFT
EUROPEAN STANDARD
prEN 12418
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2018
ICS 91.220 Will supersede EN 12418:2000+A1:2009
English Version
Masonry and stone cutting-off machines for job site -
Safety
Scies de chantier à tronçonner les matériaux - Sécurité Steintrennmaschinen für den Baustelleneinsatz -
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 12418:2018 E
worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
oSIST prEN 12418:2019
prEN 12418:2018 (E)
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 . 12
4.1 General . 12
4.2 Mechanical hazard . 13
4.2.1 General . 13
4.2.2 Protection against moving parts . 13
4.2.3 Minimum strength of the guards . 14
4.2.4 Frame and legs . 14
4.2.5 Transport and handling . 15
4.2.6 Fixing of the cutting-off wheel . 15
4.2.7 Combustion engine-starting device . 15
4.2.8 Guiding device of the table and for the material . 15
4.2.9 Control devices . 16
4.2.10 Failure of the power supply . 16
4.3 Electrical hazards . 16
4.3.1 General . 16
4.3.2 Water pump . 16
4.4 Thermal hazards . 17
4.4.1 Handles and other surfaces which require continuous contact shall have a surface
temperature not exceeding 43 °C. . 17
4.4.2 Controls and other parts of the machine which are contacted occasionally shall meet
the limits as given in EN ISO 13732-1:2008 according to the chosen material for a
contact period up to 5 s, lowest curve. . 17
4.4.3 Hot areas which may be contacted unintentionally shall meet the levels of EN ISO
13732-1:2008 for a contact period below 1 s. These areas shall be either located at a
distance greater than 120 mm from the gripping areas, or they shall be protected by
shields. . 17
4.4.4 Test method . 17
4.5 Exhaust fumes (and gas) . 17
4.6 Fluid containers . 17
4.7 Protection against water splashes and dust emissions . 17
4.8 Rotational speed . 18
4.9 Noise . 18
4.9.1 Noise reduction at the design stage . 18
4.9.2 Noise emission measurement, declaration and verification procedures . 18
4.10 Vibrations . 18
4.10.1 Vibration reduction as a safety requirement . 18
4.10.2 Vibration measurement, declaration and verification procedures . 19
4.11 Maintenance . 19
5 Verification of safety requirements and/or measures . 19
2
---------------------- Page: 4 ----------------------
oSIST prEN 12418:2019
prEN 12418:2018 (E)
6 Information for use . 19
6.1 General . 19
6.2 Marking . 19
6.2.1 Regular marking . 19
6.2.2 Other information . 19
6.2.3 Warnings . 20
6.3 Accompanying documents. 20
6.3.1 Operator's instructions . 20
6.4 Presentation of information . 23
Annex A (informative) List of significant hazards . 24
Annex B (normative) Noise test code - Grade 2 of accuracy . 27
B.1 General . 27
B.2 Measurement of the A-weighted emission sound pressure level at the work station
of the operator . 27
B.3 Determination of the sound power level emitted by the machine . 27
B.4 Information to be recorded . 28
B.5 Information to be reported . 28
B.6 Noise declaration by the manufacturer . 28
Annex C (normative) Dimensions of the flanges for cutting-off diamond wheel . 30
C.1 General . 30
C.2 Ratios to the diameters of the cutting-off wheel . 30
C.3 Minimum diameter S of the flange . 31
C.4 Minimum width R of contact surface of the flange with the cutting-off wheel . 31
C.5 Depth of the clearance T . 31
Annex D (normative) Strength of guards - State of the art concerning the characteristics of
guards used with cutting-off wheels . 32
D.1 General . 32
D.2 Guard specifications for type 1 and 2 machines (see 3.2) . 32
D.2.1 Calculation method . 32
D.2.1.1 General . 32
D.2.1.2 Formula for determining the translation energy of the fragment of a tool . 34
D.2.1.3 Formula for determining the minimum thickness t of the peripheral part (P) of the
p
guard material according to the chosen material . 34
D.2.1.4 Formula for determining the minimum thickness t of the side part (L) of the guard . 34
L
D.2.2 Example of a minimum thickness of guards made with E24 grade 2 steel (alternative
to D.2.1) . 34
D.2.3 Other methods for determining the minimum thickness of guards . 35
Annex E (informative) Pictograms . 36
Annex F (normative) Verification of surface temperature . 37
F.1 Test equipment . 37
3
---------------------- Page: 5 ----------------------
oSIST prEN 12418:2019
prEN 12418:2018 (E)
F.2 Test method . 37
F.3 Test acceptance . 37
Annex G (normative) Vibration test code . 38
G.1 General . 38
G.2 Terms and definitions . 38
G.3 Vibration parameters to be measured and determined . 38
G.4 Instrumentation . 38
G.4.1 General . 38
G.4.2 Accelerometer . 38
G.4.3 Fastening of accelerometer . 38
G.4.4 Calibration . 39
G.5 Operating conditions, testing and declaration of results . 39
G.6 Uncertainties . 40
G.7 Information to be reported . 40
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2006/42/EC aimed to be covered . 42
Bibliography . 43
4
---------------------- Page: 6 ----------------------
oSIST prEN 12418:2019
prEN 12418:2018 (E)
European foreword
This document (prEN 12418:2018) 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 12418:2000+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.
Annex A is informative and contrains "List of significant hazards", Annex B is normative and contains
"Noise test code - Grade 2 of accuracy", Annex C is normative and contains "Dimensions of the flanges
for cutting-off diamond wheel", Annex D is normative and contains "Strength of guards - State of the art
concerning the characteristics of guards used with cutting-off wheels ", Annex D is normative and
contains "Pictograms“, Annex E is normative and contains "Verification of surface temperature”, Annex
F is normative and contains "Vibration text code" and the Annex ZA is informative and contains
"Relationship of this European Standard with EU Directives“; this document also contains a
Bibliography.
The main differences between this document and EN 12418:2000+A1:2009 are as follows:
a) Normative references (Clause 2) revised and updated;
b) List of significant hazards revised and updated;
c) Requirements for design of the cutting-off wheel guard;
d) Requirements for warnings;
e) Requirements for Information for use;
f) Requirements for operator's instructions;
g) Requirements for noise test code;
h) Illustrations and pictograms updated.
5
---------------------- Page: 7 ----------------------
oSIST prEN 12418:2019
prEN 12418:2018 (E)
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.
6
---------------------- Page: 8 ----------------------
oSIST prEN 12418:2019
prEN 12418:2018 (E)
1 Scope
This document applies to transportable masonry and stone cutting-off machines stationary during
work, principally used on job site building construction for cutting-off stones, other mineral
construction materials and composite materials having at least one supporting surface. The power for
the tool rotation is supplied by electrical or internal combustion prime motor. This document deals with
all significant hazards pertinent to masonry and stone cutting-off machines for job site (see Clause 4),
when they are used as intended and under the conditions foreseen by the manufacturer. 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 diamond cutting-off wheels with a continuous rim
and/or segmented rim according to prEN 13236:2017.
This document does not apply to:
— metal cutting-off machines;
— wood and timber sawing machines;
— machines with a feed or descent mechanism other than manual, or with a pedal;
— mobile machines on a trolley travelling on the ground;
— hand-held portable grinding and cutting-off machines;
— hand-held portable grinding and cutting-off machines mounted on a support to be used in a fixed
position.
This document does not cover the operation of transportable masonry and stone cutting-off machines
in potential explosive atmospheres.
This document covers electrical hazards making reference to relevant European Standards (see 4.3).
Those hazards that are relevant for all mechanical, electrical, hydraulic, pneumatic and other equipment
of machinery and that are dealt with in standards for common use are not covered by this document.
Reference to pertinent standards of this kind is made where such standards are applicable and so far
necessary.
In this document, the masonry and stone cutting-off machines for job site construction are called:
"cutting-off machines" or "machines", and cutting-off wheels are also 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 12096, Mechanical vibration — Declaration and verification of vibration emission values
prEN 13236:2017, Safety requirements for superabrasive products
EN 60204-1:2006, Safety of machinery — Electrical equipment of machines — Part 1: General
requirements (IEC 60204-1:2005)
7
---------------------- Page: 9 ----------------------
oSIST prEN 12418:2019
prEN 12418:2018 (E)
EN 60335-1:2012, Household and similar electrical appliances — Safety — Part 1: General requirements
(IEC 60033-1:2010, modified)
EN 60335-2-41:2003, Household and similar electrical appliances — Safety — Part 2-41: Particular
requirements for pumps 2 (IEC 60335-2-41:2002)
EN 60529:1991, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989)
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 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 13857, Safety of machinery — Safety distances to prevent hazard zones being reached by upper
and lower limbs (ISO 13857)
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 16063-1:1998, 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.
8
---------------------- Page: 10 ----------------------
oSIST prEN 12418:2019
prEN 12418:2018 (E)
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1
cutting-off machine
transportable machine used in building and site construction, operating at a stationary position and
intended for cutting primarily construction material of different weight, shape and dimensions, for
example natural stone, concrete (reinforced or otherwise), bricks, concrete blocks (breeze blocks),
paving slabs or cobblestones, roof tiles and ceramic tiles
Note 1 to entry: The feed of the material or of the table where it is placed is made by hand. The cutting head, if
movable, is moved manually or by a pedal.
Note 2 to entry: The power source of a cutting-off machine is an electrical motor or an internal combustion
engine with built-in tank
3.2
types of cutting-off machines
cutting-off machines can be basically classified in four different types defined below:
— Type 1: Machine with a movable table having a fixed (permanently or by means of clamps) or
swinging moveable cutting head (tiltable or not) which is located over the table;
— Type 2: Machine with a fixed table having a horizontal moving cutting head and, if applicable,
vertically adjustable and tiltable cutting head located over the table;
— Type 3: Machine with a fixed table having a vertically moving cutting head;
— Type 4: Machine with a fixed or movable and/or inclinable table having a fixed cutting head, and
only intended for use with continuous rim tools having a maximum diameter of 250 mm. The motor
is located under the table;
9
---------------------- Page: 11 ----------------------
oSIST prEN 12418:2019
prEN 12418:2018 (E)
Type 1
Type 2
Type 4
Type 3
Figure 1 — Sketches of the different types of cutting-off machines
3.3
parts of a cutting-off machine
cutting-off machine comprising the following parts:
— frame;
— electric motor or an ICE (internal combustion engine) to drive the cutting-off wheel in rotation;
— cutting head;
— rotating cutting-off wheel (see Clause 1);
— material-carrying table (movable and/or tiltable or not);
— cutting-off wheel guard;
— self-containing water tank with an electrical or mechanical water pump or an alternative water
supply.
See also Figure 2.
10
---------------------- Page: 12 ----------------------
oSIST prEN 12418:2019
prEN 12418:2018 (E)
Cutting-off machine with internal combustion engine Cutting-off machine with electric motor
Key
1 frame (incorporating the water tank)
2 legs (demountable or otherwise)
3 cutting head
4 cutting-off wheel
5 electric motor (or engine)
6 handle for moving the cutting head
7 foot pedal for lowering the
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.