EN 12418:2000+A1:2009

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Steintrennmaschinen für den Baustelleneinsatz - SicherheitScies de chantier à tronçonner les matériaux - SécuritéMasonry and stone cutting-off machines for job site - Safety91.220Gradbena opremaConstruction equipmentICS:Ta slovenski standard je istoveten z:EN 12418:2000+A1:2009SIST EN 12418:2000+A1:2009en01-maj-2009SIST EN 12418:2000+A1:2009SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12418:2000+A1
March 2009 ICS 91.220 Supersedes EN 12418:2000English Version
Masonry and stone cutting-off machines for job site - Safety
Scies de chantier à tronçonner les matériaux - Sécurité
Steintrennmaschinen für den Baustelleneinsatz - SicherheitThis European Standard was approved by CEN on 3 May 2000 and includes Amendment 1 approved by CEN on 15 February 2009.
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 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 Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12418:2000+A1:2009: ESIST EN 12418:2000+A1:2009

Noise test code - Grade 2 of accuracy. 22Annex B (normative)
Dimensions of the flanges for cutting-off diamond wheel . 25Annex C (normative)
Strength of guards - State of the art concerning the characteristics of guards used with cutting-off wheels . 27Annex D (normative)
Pictograms . 31Annex E (normative)
Verification of surface temperature . 33Annex F (normative)
!Vibration test code" . 34Annex ZA (informative)
!Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC, amended by 98/79/EC" . 38Annex ZB (informative)
!Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC" . 39Bibliography . 40 SIST EN 12418:2000+A1:2009

 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 European Standard does not cover the operation of transportable masonry and stone cutting-off machines in potential explosive atmospheres. This European Standard covers electrical hazards making reference to relevant European Standards (see 5.2). 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 European Standard. Reference to pertinent standards of this kind is made where such standards are applicable and so far necessary. In this standard, 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 standard applies primarily to the machines which are manufactured after the date of approval of the standard by CEN. SIST EN 12418:2000+A1:2009

Figure 1 — Sketches of the different types of cutting-off machines SIST EN 12418:2000+A1:2009

Cutting-off machine with internal combustion engine Cutting-off machine with electric motor 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 cutting head (if any) 8 cutting-off wheel guard 9 moveable 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 types 1 and 2 machines) Figure 2 — Examples of cutting-off machines SIST EN 12418:2000+A1:2009

HazardsRelevant subclauses
4.1 Crushing hazard 5.1.1, 5.1.2, 5.1.3, 5.1.4, 5.1.5, 5.1.6, 5.1.7, 5.1.8, 5.1.9, 5.1.10, 7.2.1
4.2 Shearing hazard 5.1.1, 5.1.2, 5.1.3, 5.1.5, 5.1.6, 5.1.8, 5.1.9, 5.1.10
4.3 Cutting and severing hazard 5.1.1, 5.1.2, 5.1.3, 5.1.6, 5.1.8, 5.1.9, 5.1.10
4.4 Entanglement hazard 5.1.1, 5.1.2, 5.1.3, 5.1.6, 5.1.8, 5.1.9, 5.1.10
4.5 Drawing-in or trapping hazard 5.1.1, 5.1.2, 5.1.3, 5.1.6, 5.1.9, 5.1.10
(continued) SIST EN 12418:2000+A1:2009

Hazards Relevant subclauses 4.6 Impact hazard 5.1.1, 5.1.2, 5.1.3, 5.1.5, 5.1.6, 5.1.7, 5.1.8, 5.1.9, 5.1.10, 7.2.1
4.7 Fluid ejection hazard 5.6
4.8 Hazards caused by ejection of parts (material/work pieces) 5.1.1, 5.1.2, 5.1.3, 5.1.6, 5.1.7, 5.1.8, 5.1.9, 5.1.10, 5.7, 7.2.1
4.9 Hazards caused by loss of stability (machinery and machine parts) 5.1.4, 5.1.5, 5.1.9, 7.2.1
4.10 Slip, trip and fall hazard in relationship with machinery 5.5, 7.2.1
4.11 Hazards caused by electrical contact direct or indirect 5.2, 7.2.1
4.12 Hazards resulting in burns and/or scalds, by possible contact of persons, by flames or explosions and also by radiation of heat sources 5.3, 7.2.1
4.13 Health-damaging effects by hot or cold work environment and by noise 5.8, 7.2.1
4.14 Hazards resulting from contact with or inhalation of harmful fluids, gases, mists, fumes and dusts 5.4, 5.5, 5.9, 7.2.1
4.15 Hazards caused by fire and/or explosion 7.2.1
4.16 Unhealthy postures or excessive efforts 5.1.5, 5.1.7, 5.1.8, 7.2.1.3
4.17 Hazards caused by inadequate local lighting 7.2.1
4.18 Hazards caused by human errors 5.1.2, 5.2.1, 7.1, 7.2.1
4.19 Hazard combinations 5.1.1, 7.1, 7.2.1
4.20 Hazard caused by failure of energy supply (of energy and/or control circuits) 5.1.10, 5.2, 7.2.1
4.21 Hazards caused by failure/disorder of control system 5.1.9, 5.1.10, 5.2, 7.2.1
4.22 Hazards caused by errors of fitting 7.1, 7.2.1
4.23 Hazards caused by temporarily missing and/or incor-rectly positioned safety related measures/means as:
4.23.1 Guards of all kinds 7.2.1
4.23.2 Safety related protection devices of all kinds 7.2.1
4.23.3 Starting and stopping devices 7.2.1
4.23.4 Information on safety signs and tags 7.1.3
4.23.5 Information and warnings of all kinds 7.1, 7.2.1
4.23.6 Essential equipment and accessories for safe ad-justment and/or maintenance 5.1.8.2, 7.2.1 SIST EN 12418:2000+A1:2009

5 Safety requirements and/or measures Machinery shall comply with the safety requirements and/or measures of this clause and in addition with !EN ISO 12100-1:2003" and !EN ISO 12100-2:2003" for hazards which are relevant but not significant and which are not dealt with in this standard. For the application of !EN ISO 13857", EN 953, and EN 60204-1 the manufacturer shall carry out an adequate risk assessment for the requirements thereof where choice is necessary. NOTE This specific risk assessment should be part of the general risk assessment relating to the hazards not covered by this standard. Covering each significant hazard is sufficient for covering combinations of hazards. 5.1 Mechanical hazard 5.1.1 General As components and parts have to be manually handled, all the accessible parts, with the exception of the cutting-off wheel, shall be free of sharp parts and burrs 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. 5.1.2 Protection against moving parts 5.1.2.1 Transmission parts Rotating transmission parts, for example, couplings and belt drives for drive shafts and mechanical water pumps shall be provided with fixed guards to prevent contact. These guards shall comply with !EN 953". Fixed guards shall be held in position either by welding or by mounting them in such a way that they can be opened or removed only with the aid of tools or keys. !These guards shall comply with EN 953 and 5.3.2.2 of EN ISO 12100-2:2003." !deleted text" 5.1.2.2 Connection between the cutting head and the frame For type 1 machines (see 3.2) with a swinging moveable cutting head, the cutting head, as far as it is not lockable, shall return automatically to rest position when released. In this case the area between the cutting head and the frame of the machine shall be protected to avoid any shearing hazard. This can be done either by design (taking into account the minimum distances given in EN 349:1993) or by enclosing the shearing area with guards. 5.1.2.3 Moving parts involved in the working process (protection against contact with the cutting-off wheel and its fixing devices) The safety measures to be taken shall be adapted according to the type of machines (see 3.2). SIST EN 12418:2000+A1:2009

Figure 3a b) The rear edge of the cutting-off wheel guard shall be located, at least, as low as the horizontal plane passing by the lowest point of the flange. The foregoing condition shall be fulfilled when the cutting head is in the highest position. The rear angle of the guard α2 shall not be greater than the maximum upward angle α1 measured when the cutting head is in the highest position (see figure 3b).
Figure 3b Front of the machine Link joint of the cutting head Front of the machine Tangent at the lowest edge of the wheel flange SIST EN 12418:2000+A1:2009

5.1.2.3.2 Type 4 machines These machines are intended to be used only with continuous rim diamond cutting-off wheels. For this type of machine, where the cutting-off wheel fixing device is located below the table, the design shall be such that this fixing device is out of reach of the operator during the working procedure. The working area shall be protected by means of a water splash guard which can be fixed to a support fixed to the frame. This guard shall minimize water splash against the operator. 5.1.3 Minimum strength of the guards The guards of the cutting-off wheel (for type 1, 2 and 3 machines) shall be so designed to resist strains resulting from an accidental projection of a fragment of the cutting-off wheel. Brittleness of the guard material shall be taken into account. Permanent plastic deformation of the guard resulting from stresses shall be allowed. Guards shall remain attached to the cutting head in case of the projection of segments of the cutting-off wheel.
Annex C indicates the characteristics of guards which correctly fulfil their function. 5.1.4 Frame and legs 5.1.4.1 Stability of the machine The machine shall be stable in order to avoid overturning when operating or during handling the material to be cut on the table. This may be verified as follows: The machine without water (when the tank is located inside the frame of the machine), the cutting head and the table being secured, shall be inclined at an angle of 10° in all positions with respect to the vertical. It shall not overturn regardless of the position of the movable parts. 5.1.4.2 Connection of legs to frame Connection between legs and frame shall be so designed that any loss of the legs in particular when lifting the machine, is prevented. Disconnection shall only be possible by an intentional manual action. 5.1.5 Transport and handling The movable parts of the machine shall be either lockable or removable to avoid any risk of shearing or crushing e.g. during handling and carrying. NOTE For technical requirements relating to transport and lifting of the machine see !5.5.5" of
!EN ISO 12100-2:2003". SIST EN 12418:2000+A1:2009

EN 60529:1991) !therefore an inbuilt PRCD is not required". 5.2.2 Water pump Where water is supplied by an electrical pump for flushing the cutting-tool, the pump shall fulfil the relevant requirements of !EN 60335-1:2002" and !EN 60335-2-41:2003". 5.3 Thermal hazards 5.3.1 Handles and other surfaces which require continuous contact shall have a surface temperature not exceeding 43°C. 5.3.2 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. SIST EN 12418:2000+A1:2009

!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.
These shields shall be designed to reduce the heat transfer from the surface to the body of the operator. This may be achieved by a structured surface, ribs or special coating. 5.3.4 Test method The test method to verify the surface temperature of the machine is prescribed in annex E. The machine parts whose temperatures exceed the permissible limits of !EN ISO 13732-1:2008" for a contact time not exceeding 1 s and
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