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STANDARD
SIST EN 12348:2000+A1:2009
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12348:2000+A1
April 2009 ICS 25.080.40 Supersedes EN 12348:2000English Version
Core drilling machines on stand - Safety
Foreuses à béton (carotteuses) sur colonne - Sécurité
Kernbohrmaschinen auf Ständer - Sicherheit This European Standard was approved by CEN on 26 June 2000 and includes Amendment 1 approved by CEN on 1 March 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 12348:2000+A1:2009: ESIST EN 12348:2000+A1:2009
EN 12348:2000+A1:2009 (E) 2 Contents Page Foreword .3Introduction .41Scope .42Normative references .53Terms and definitions .64List of significant hazards .85Safety requirements and/or measures . 105.1Mechanical hazards . 105.2Electrical hazards . 135.3Ergonomics . 135.4Thermal hazards . 135.5Exhaust fumes (internal combustion engine machines) and exhaust compressed air (pneumatic machines) . 145.6Hydraulic and pneumatic machines . 145.7Fluid containers . 145.8Water supply and dust emission . 145.9Rotational speed . 145.10Noise . 155.11 !!!!Vibration . 155.12Maintenance . 156Verification of safety requirements and/or measures . 157Information for use . 157.1Marking . 167.2Accompanying documents . 16Annex A (normative)
Noise test code - Grade 2 of accuracy. 20Annex B (normative)
Pictograms . 23Annex C (normative)
Verification of surface temperature . 24Annex D (normative)
!!!!Vibration test code . 25Annex ZA (informative)
!Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC"""" . 29Annex ZB (informative)
!!!!Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC"""" . 30Bibliography . 31 SIST EN 12348:2000+A1:2009
EN 12348:2000+A1:2009 (E) 3 Foreword This document (EN 12348:2000+A1:2009) 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 October 2009, and conflicting national standards shall be withdrawn at the latest by December 2009. This document includes Amendment 1, approved by CEN on 2009-03-01. This document supersedes EN 12348:2000. The start and finish of text introduced or altered by amendment is indicated in the text by tags ! ". This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). !For relationship with EU Directives, see informative Annexes ZA and ZB, which are integral parts of this document." The annex A is normative and contains "Noise test code - Grade 2 of accuracy", annex B is normative and contains "Pictograms", annex C is normative and contains "Verification of surface temperature", and the annex ZA is informative and contains „Relationship of this European Standard with EU Directives“. This European Standard also contains a Bibliography. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: 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.
SIST EN 12348:2000+A1:2009
EN 12348:2000+A1:2009 (E) 4 Introduction This European standard is a Type C-standard as stated in !EN ISO 12100-1". The machinery concerned and the extent to which hazards are covered are indicated in the scope of this standard. This European standard has been prepared by taking into account the safety requirements of EN 791:1995 which are applicable to core drilling machines on a stand. 1 Scope This European Standard applies to core drilling machines on transportable stands equipped with a diamond core drill bit, usually with a water supply connection device, and intended to drill holes into stone, concrete and similar mineral materials in a stationary position where the power for the tool rotation is supplied by an electrical, hydraulic, pneumatic or internal combustion prime motor. The feed movement of the drill head and core drill bit may be effected by manual, mechanical or hydraulic means. This European Standard deals with all significant hazards pertinent to core drilling machines on a stand when used as intended and under the conditions foreseen by the manufacturer (see clause 4). This standard specifies the appropriate technical measures to eliminate or reduce risks arising from the significant hazards. This standard does not apply to: percussive or rotary-percussive rock drills either mounted or unmounted; hand held power drills; hydraulic or pneumatic power supply sources; mobile undercarriages to which machines can be fitted. This European Standard does not apply to machinery covered by EN 791:1995. This European Standard covers electrical hazards by making reference to relevant European Standards (see 5.2). Those hazards that are relevant for all mechanical, electrical, hydraulic 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 as is necessary. In this European Standard, core drilling machines on a stand are called "machines" and diamond core drill bits are called “tools”. NOTE The term "diamond" is used as a generic word which covers all varieties of abrasive products such as diamond, borum nitride. This European Standard applies primarily to machines which are manufactured after the date of approval of the standard by CEN. SIST EN 12348:2000+A1:2009
EN 12348:2000+A1:2009 (E) 5 2 Normative references !The following referenced documents are indispensable for the application 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." !deleted text" !EN 206-1:2000, Concrete — Part 1: Specification, performance, production and conformity" EN 294:1992, Safety of machinery - Safety distances to prevent danger zones being reached by the upper limbs !deleted text" EN 791:1995, Drill rigs - Safety !EN 953", Safety of machinery – Guards - General requirements for the design and construction of fixed and movable guards !deleted text" EN 982:1996, Safety of machinery - Safety requirements for fluid power systems and their components - Hydraulics EN 983:1996, Safety of machinery - Safety requirements for fluid power systems and their components - Pneumatics !EN 12096, Mechanical vibration — Declaration and verification of vibration emission values" !deleted text" !prEN ISO 3744:2006, Acoustics — Determination of sound power levels and sound energy levels of noise sources using sound pressure — Engineering method in an essentially free field over a reflecting plane (ISO/DIS 3744:2006)" !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 8041, Human response to vibration — Measuring instrumentation (ISO 8041:2005)" EN ISO 11201:1995, !Acoustics — Noise emitted by machinery and equipment — Measurement of emission sound pressure levels at a work station and at other specified positions — Engineering method in an essentially free field over a reflecting plane (ISO 11201:1995)" !EN ISO 12100-1:2003, Safety of machinery — Basic concepts, general principles for design — Part 1: Basic terminology, methodology (ISO 12100-1:2003) EN ISO 12100-2:2003, Safety of machinery — Basic concepts, general principles for design — Part 2: Technical principles (ISO 12100-2:2003) 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 13849-1:2008, Safety of machinery — Safety-related parts of control systems — Part 1: General principles for design (ISO 13849-1:2006) EN ISO 13850:2008, Safety of machinery — Emergency stop — Principles for design (ISO 13850:2006) SIST EN 12348:2000+A1:2009
EN 12348:2000+A1:2009 (E) 6 EN ISO 20643:2008, Mechanical vibration — Hand-held and hand-guided machinery — Principles for evaluation of vibration emission (ISO 20643:2005)" !EN 60204-1:2006, Safety of machinery — Electrical equipment of machines — Part 1: General requirements (IEC 60204-1:2005, modified)" !EN 60335-1:2002, Household and similar electrical appliances — Safety — Part 1: General requirements (IEC 60335-1:2001, modified)" !EN 60335-2-41:2003, Household and similar electrical appliances — Safety — Part 2-41: Particular requirements for pumps (IEC 60335-2-41:2002)" EN 61029-1:2000, Safety of transportable motor operated electric tools – Part 1: General requirements (IEC 61029-1:1990, modified) !prEN 61029-2-6:2007, Safety of transportable motor-operated electric tools — Part 2-6: Particular requirements for diamond drills with water supply (IEC 61029-2-6:1993, modified)" !ISO 5348, Mechanical vibration and shock — Mechanical mounting of accelerometers ISO 7000:2004, Graphical symbols for use on equipment — Index and synopsis ISO 16063-1, Methods for the calibration of vibration and shock transducers — Part 1: Basic concepts" 3 Terms and definitions For the purposes of this European Standard the terms and definitions stated in !EN ISO 12100-1:2003" apply.
Additional terms and definitions specifically needed for this European Standard are added below. 3.1 core drilling machine machine used to drill holes with a diamond core bit into walls, floors and ceilings made of concrete, natural stone and other mineral building materials. The machine is mounted on a transportable stand having a drive spindle which is equipped with a core drill bit. It is (generally) equipped with a water supply. It may have manual or powered feed. Figure 1 shows a typical example of a core drilling machine SIST EN 12348:2000+A1:2009
EN 12348:2000+A1:2009 (E) 7
Key 1 Frame (drill stand) including a column which may be tiltable and a base 2 Drilling unit 3 Diamond core drill bit including any connecting accessories (not being part of the machine) 4 Control devices for the operating functions and feed mechanism of the machine
5 Water supply system 6 Residual current device (RCD) Figure 1 — Main parts of a core drilling machine 3.2 drilling unit the drilling unit consists of all the components required for drilling. The following list is a typical example: drill head with prime mover. This prime mover may be: internal combustion, electric, pneumatic, or hydraulic; drive spindle water supply system; on/off control for feed; on/off control for rotation; SIST EN 12348:2000+A1:2009
EN 12348:2000+A1:2009 (E) 8 on/off control for water supply 3.3 drill stand This contains all the devices for positioning and fixing: base with means for fixing it in position by e.g. anchors or clamps. It can be equipped with additional wheels for transport; column, (may be tiltable), equipped with means for guiding the drilling unit 3.4 !!!!rated no-load spindle speed"""" speed of the drive spindle, in revolutions per minute (min-1), at rated conditions specified by the machine manufacturer without tool and under !no-load" 3.5 nominal mass the mass of the machine equipped with all its dismountable parts, but without the tool mounted and the attached tank(s) being empty 3.6 maximum operating mass the mass of the machine equipped with all its dismountable parts, ready for use, with the tool mounted and the attached tank(s) being full 4 List of significant hazards This clause contains all significant hazards and hazardous situations, as far as they are dealt with in this European Standard, identified by risk assessment significant for this type of machinery and which require action to eliminate or reduce risk. SIST EN 12348:2000+A1:2009
EN 12348:2000+A1:2009 (E) 9
Table 1 — List of significant hazards
Hazards Relevant subclauses 4.3 Cutting and severing hazard 5.1.1, 5.1.2, 5.1.3, 5.1.5
4.4 Entanglement hazard 5.1.2, 5.1.3, 5.1.5
4.5 Drawing-in or trapping hazard 5.1.2, 5.1.3, 5.1.5
4.6 Impact hazard 5.1.2, 5.1.4
4.7 Fluid injection hazard 5.1.7, 5.7
4.8 Hazards caused by ejection of parts
(material/work pieces) 5.1.4, 5.1.5, 5.9, 7.2
4.9 Hazards caused by loss of stability 5.1.4, 7.2
(machinery and machine parts)
4.10 Slip, trip and fall hazard in relationship with 5.7, 7.2
Machinery
4.11 Hazards caused by either direct or indirect electrical contact
5.2, 7.2
4.12 Hazards resulting in burns and/or scalds, by possible contact of persons with flames,
explosions or by radiation from heat sources 5.4, 7.2
4.13 Health damaging effects of a hot or cold work environment or of noise 5.10, 7.2
4.14 Hazards resulting from contact with or inhalation of harmful fluids, gases, mists, fumes and dusts 5.5, 5.8, 7.2
4.15 Hazards caused by fire and/or explosion 7.2
4.16 Unhealthy postures or excessive efforts 5.3, 7.2
4.17 Hazards caused by inadequate local lighting 7.2
4.18 Hazards caused by human errors 7.1, 7.2
4.19 Hazard combinations 5.1.1, 7.1, 7.2
4.20 Hazard caused by failure of energy supply (of energy and/or control circuits) 5.1.5, 5.1.6, 5.2, 7.2
4.21 Hazards caused by failure/disorder of control system 5.1.5, 5.2, 7.2
Hazards Relevant subclauses
4.22 Hazards caused by errors of fitting 7.1, 7.2
SIST EN 12348:2000+A1:2009
EN 12348:2000+A1:2009 (E) 10
Table 1 — List of significant hazards
Hazards Relevant subclauses 4.23 Hazards caused by temporarily missing and/or incorrectly positioned safety related measures/means, for example
4.23.1 Guards of all kinds 5.1.2.1, 7.2
4.23.2 Safety related protection devices of all kinds 7.2
4.23.3 Starting and stopping devices 7.2
4.23.4 Safety signs and tags 7.1, 7.2
4.23.5 Information and warning devices of all kinds 7.1, 7.2
4.23.6 Essential equipment and accessories for safe adjustment and/or maintenance 7.2 !4.24 Hazards generated by vibration 5.11"
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 294:1992, !EN 953", EN 982:1996, EN 983:1996 and !EN 60204-1:2006" 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 individual significant hazard is sufficient for covering combinations of hazards. 5.1 Mechanical hazards 5.1.1 General As components and parts have to be manually handled, all the accessible parts 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 shafts, couplings and belt drives) with the exception of the drive spindle end shall be provided with fixed guards to prevent contact. !These guards shall comply with EN 953 and 5.3.2.2 of EN ISO 12100-2:2003." 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. Guards shall comply with the provisions of EN 294:1992 on safety distances.
SIST EN 12348:2000+A1:2009
EN 12348:2000+A1:2009 (E) 11 !deleted text" 5.1.2.2 Feed of the drilling unit on the column The drilling unit shall be lockable !at least in one position" or shall be designed to be self-sustaining in any !stop-" position on the column. !Machines equipped with a powered feed system shall be self-sustaining in any stop-position." Machines shall be designed in such a way, that separation of the drilling unit from the column needs an intentional action. End stops corresponding to the two ends of the working stroke shall be fitted. Components such as rope(s), chain(s) and belt(s), which may be integral part(s) of the feed system of a machine and are directly involved in the pull-down and pull-up operation of the drilling unit, shall fulfil the following requirements: they shall be selected with a safety factor of 3,5, (e.g. minimum breaking force in relation to maximum load) in normal operation as intended by the manufacturer; an adequate and safe means of tensioning shall be provided. 5.1.2.3 Fixing of drilling bit to the drive spindle The drive spindle end shall be designed in such a way that the core drilling bit and the connecting accessories can be mounted in order to prevent self-loosening during normal drilling operation. 5.1.3
Safety distance for hand fed machines The shortest distance between a manual feed control device and the tool(s) intended by the machine manufacturer shall be > 2,5 cm. 5.1.4 Stability !deleted text" 5.1.4.1 !Stability during work" The drill stand shall be equipped with fixing devices which will allow rigid and safe mounting to the material to be drilled. For anchor fixing, slotted hole(s) shall be provided. Nuts and screws intended to adjust the stand in position shall need intentional action to loosen them. NOTE Due to the various existing fixing systems for different machine applications it is not possible to give precise technical requirements for these systems in this standard. 5.1.4.2 !Stability during transportation, assembly and dismantling As the stability of the drill rig is not given for these situations the operators manual shall give instructions for safe handling." SIST EN 12348:2000+A1:2009
EN 12348:2000+A1:2009 (E) 12 5.1.5 Control device 5.1.5.1 General For control functions in electric, hydraulic and pneumatic systems see clauses 7, 9, 11, and 13 of !EN 60204-1:2006", EN 982:1996, EN 983:1996, and for safety related parts, see !EN ISO 13849-1:2008". 5.1.5.2 Start and stop control device for the drive of the spindle and the powered feed Machines shall be equipped with separate control devices to start and stop the drive of the spindle and to start and stop the powered feed. Starting shall only be possible by an intentional actuation of both of these starting control devices. The stop control devices shall cut the relevant power supply. !For cable-less control, an automatic stop, which holds the carriage in a sustained position, shall be activated when correct signals are not received, including loss of communication. Access to danger zones that cannot be supervised by the operator from the different possible control positions shall be avoided by appropriate provisions." 5.1.5.3 !Emergency stop Emergency stop device is not required for manual fed machines as it would not reduce the stopping time the operator being close to the drill motor.
All machines with remote control and/or automatic feed shall be fitted with an easily accessible emergency stop in the system. This emergency stop shall be in accordance with EN ISO 13850:2008. It shall stop all dangerous movements as quickly as possible without creating an additional hazard." 5.1.6 Failure of the power supply An interruption of the power supply and a reestablishment after an interruption shall not lead to a dangerous situation in particular: the machine shall not be restarted automatically, an intentional action shall be necessary; the machine shall not be prevented from stopping if the stop command has been given; neither movement nor dangerous actions shall occur.
Such failures shall not impede any stop function. NOTE Manual feed machines, the power of which does not exceed 750 W and which are intended to be used with core drills, the diameter of which does not exceed 60 mm are considered as presenting no particular danger in the case of restoration of energy supply. 5.1.7 Dissipation of residual energy On pneumatically powered machines a main line valve shall be provided which either connects the machines to the air supply or in the closed position shuts off the air supply and releases the air pressure in the drilling unit when stopping the machine. SIST EN 12348:2000+A1:2009
EN 12348:2000+A1:2009 (E) 13 5.2 Electrical hazards 5.2.1 General Machines with an electric motor the power of which is less than or equal to 4 kW shall fulfil the electrical safety requirements of EN 61029-1:2000 and !prEN 61029-2-6:2007". Machines with an electric motor the power of which is more than 4 kW and a current less than 16 A shall fulfil the electrical safety requirements of !EN 60204-1:2006", in particular clauses 4, 5, 6, 14, 15 and 16. In addition to !4.4.3 of EN 60204-1:2006" these machines shall work as intended in an ambient temperature range of 0 °C to 40 °C. For machines with three phase electrical supply a device enabling phase inversion (to ensure correct tool rotation) shall be provided. The enclosure of the electrical controls shall provide a degree of protection of at least IP 54 (see EN 60529:1991). 5.2.2 Water pump Where water is supplied by an electrical pump for flushing the drilling tool the pump shall fulfil the relevant requirements of !EN 60335-1:2002" and !EN 60335-2-41:2003". 5.3 Ergonomics Machines or parts having a mass greater than 25 kg shall have hoisting points for lifting devices that allow their transport and handling during the installation. These points shall be indicated in the operator’s manual. 5.4 Thermal hazards 5.4.1 Handles and other surfaces which require continuous contact shall have a surface temperature not exceeding 43°C. 5.4.2 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 10 s, lowest curve. 5.4.3 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.
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. 5.4.4 Test method The test method to verify the surface temperature of the machine is prescribed in annex C. The machine parts whose temperatures exceed the permissible limits of !EN ISO 13732-1:2008" for a contact time not exceeding 1 s and whose surface is greater than 10 cm², shall not be accessible to the test cone (see annex C). SIST EN 12348:2000+A1:2009
EN 12348:2000+A1:2009 (E) 14 5.5 Exhaust fumes (internal combustion engine machines) and exhaust compressed air (pneumatic machines) Internal combustion engine and pneumatic motor exhausts shall be directed away from the intended operator’s position. 5.6 Hydraulic and pneumatic machines 5.6.1 Hydraulic machines The hydraulic systems shall comply with the requirements of EN 982:1996. 5.6.2 Pneumatic machines Pneumatic systems shall comply with the requirements of EN 983:1996. 5.6.3 Hoses and pipes under pressure The requirements of EN 982:1996 and EN 983:1996 shall be complied with. Machines with hoses and pipes under pressure shall be so designed that all components with¬stand the effect of hot surfaces, inlet pressure and stored energy. Pipes, hoses and fittings shall be able to withstand the stresses from the pressure. The hoses shall be marked with the rated working pressure. Flexible hydraulic hoses intended for pressures higher than 15 MPa shall be fitted with swaged or screwed fittings. Hydraulic hoses and pipes shall be separated from electric power wiring and be guarded against hot surfaces and sharp edges. Pipes and hoses which have to be disconnected in operation shall be fitted with self sealing couplings. Couplings shall be marked to ensure correct reconnection. 5.7 Fluid containers When filled according to manufacturer’s instructions, fluid containers except water tanks, and in particular, batteries and fuel system, oil tank, shall be designed and constructed to prevent spillage whatever the position of the drilling unit. The tanks for hydraulic fluid shal
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