EN 12717:2001

SLOVENSKI STANDARD
SIST EN 12717:2002
01-januar-2002
Safety of machine tools - Drilling machines
Safety of machine tools - Drilling machines
Sicherheit von Werkzeugmaschinen - Bohrmaschinen
Sécurité des machines-outils - Perceuses
Ta slovenski standard je istoveten z: EN 12717:2001
ICS:
25.080.40 Vrtalniki Drilling machines
SIST EN 12717:2002 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

EUROPEAN STANDARD
EN 12717
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2001
ICS 25.080.40
English version
Safety of machine tools - Drilling machines
Sécurité des machines-outils - Perceuses Sicherheit von Werkzeugmaschinen - Bohrmaschinen
This European Standard was approved by CEN on 7 March 2001.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2001 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12717:2001 E
worldwide for CEN national Members.

---------------------- Page: 2 ----------------------

Page 2
EN 12717:2001
Contents
Foreword . 3
0 Introduction . 4
1 Scope. 5
2 Normative references. 5
3 Terms and definitions . 8
4 List of significant hazards. 8
5 Safety requirements and/or protective measures . 12
6 Verification of safety requirements and/or protective measures . 25
7 Information for use. 25
Annex A (informative) Illustrative figures used as examples . 28
Annex B (informative) Noise emission measurement. 34
Annex ZA (informative) Clauses of this European Standard addressing essential
requirements or other provisions of EU Directives. 35
Bibliography. 36
Tables
Table 1 - List of significant hazards and major sources of these hazards associated with
drilling machines . 9
Table 2 – List of safety requirements and/or protective measures and their verification
procedures for manual drilling machines . 13
Table 3 – List of safety requirements and/or protective measures and their verification
procedures for mechanical hazards associated with automatic drilling machines . 14
Table 4 – List of safety requirements and/or protective measures and their verification
procedures for hazards other than those listed in tables 2 and 3 . 18

---------------------- Page: 3 ----------------------

Page 3
EN 12717:2001
Foreword
This European Standard has been prepared by Technical Committee CEN/TC 143
"Machine tools - Safety", the secretariat of which is held by SNV.
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 2001, and
conflicting national standards shall be withdrawn at the latest by October 2001.
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 EC Directive(s).
This standard has been prepared to provide one means of conforming with the essential
requirements of the Machinery Directive and associated EFTA regulations.
Annexes A, B and ZA are informative. This European Standard also contains a
Bibliography.
For relationship with EC Directive(s), see informative Annex ZA, which is an integral part of
this standard.
According to the CEN/CENELEC Internal Regulations, the national standards organizations
of the following countries are bound to implement this European Standard: Austria,
Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland,
Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the
United Kingdom.

---------------------- Page: 4 ----------------------

Page 4
EN 12717:2001
0 Introduction
This European standard is a type C standard as stated in EN 292–1.
When provisions of this type C standard are different from those which are stated in type A
or B standards, the provisions of this type C standard take precedence.
Drilling machines present a wide range of hazards, not least from their wide application as
rotating tool, 'stationary' workpiece machine tools, for general purpose cutting of cold metal
work material.
Protection of operators and other persons from contact with moving cutting tools, especially
when being rapidly rotated in the spindle or from contact with fast–moving workpieces, is of
great importance.
When power–operated mechanisms are provided for workpiece transfer, they can also
create hazardous situations during loading/unloading and workpiece alignment or clamping.
On automatic drilling machines, total enclosure of the work zone using guards during
cutting is the preferred method of safeguarding. Where this is not practicable (e.g. due to
size of the workpiece, its geometry, or its special characteristics), operators may be
safeguarded by other means (e.g. perimeter fencing, protective devices at the operating
position). Operators may also benefit from pendant controls, which enable them to move
about the machine.
The significant hazards covered by this standard are those listed in clause 4. The safety
requirements and/or protective measures to prevent or minimize those hazards identified in
table 1 and procedures for verification of these requirements or measures are found in
clause 5.
The figures in annex A are examples only and are not intended to illustrate the only
interpretation of the text.

---------------------- Page: 5 ----------------------

Page 5
EN 12717:2001
1 Scope
1.1 This standard specifies the technical safety requirements and measures to be adopted
by persons undertaking the design, construction and supply (including installation and
dismantling, with arrangements for transport and maintenance) of stationary drilling
machines (see 3.1).
This standard covers both manual and automatic drilling machines. These include but are
not limited to:
– pedestal drilling machines (see figure A.1);
– radial arm drilling machines (see figure A.2);
– coordinate table drilling machines (see figure A.3);
– horizontal spindle drilling machines (see figure A.4);
– multi–spindle drilling machines (see figure A.5)
– turret type drilling machines with manual control of turret index.
1.2 This standard takes account of intended use including reasonably foreseeable misuse,
maintenance, cleaning, and setting operations. It presumes access to the machine from all
directions. It describes means to reduce risks to operators and other exposed persons.
1.3 This standard also applies to workpiece transfer devices when they form an integral part
of the machine.
1.4 This standard deals with significant hazards relevant to drilling machines when they are
used as intended and under the conditions foreseen by the manufacturer (see clause 4).
1.5 Hazards arising from other metal working processes (e.g. milling, grinding, turning,
forming, EDM, laser processing) are covered by other standards (see Bibliography).
1.6 Automatic drilling machines with automatic tool changing capabilities are not covered
by this standard (see prEN 12417:1996).
1.7 This standard is not applicable to drilling machines, which were manufactured before
the date of publication by CEN of this standard.
2 Normative references
This European Standard incorporates, by dated or undated reference, provisions from
other publications. These normative references are cited at the appropriate places in the
text and the publications are listed hereafter. For dated references, subsequent
amendments to or revisions of any of these publications apply to this European Standard
only when incorporated in it by amendment or revision. For undated references the latest
edition of the publication referred to applies (including amendments).
EN 292-1: 1991 and EN 292-2/A1:1995 Safety of machinery - Basic concepts, general
principles for design - Part 1: Basic terminology, methodology
EN 292-2: 1991 Safety of machinery - Basic concepts, general principles for design -
Part 2: Technical principles and specifications
EN 294: 1992 Safety of machinery – Safety distances to prevent danger zones
being reached by the upper limbs

---------------------- Page: 6 ----------------------

Page 6
EN 12717:2001
EN 349 Safety of machinery – Minimum gaps to avoid crushing of parts of
the human body
EN 457 Safety of machinery - Auditory danger signals - General
requirements, design and testing (ISO 7731:1986 modified)
EN 574 Safety of machinery - Two hand control devices – Functional
aspects – Principles for design
EN 614 Safety of machinery - Ergonomic design principles –
Part 1: Terminology and general principles
Part 2: Interaction between machinery design and work tasks
EN 626 Safety of machinery – Reduction of risks to health from hazardous
substances emitted by machinery
EN 894:1997 Safety of machinery –Ergonomics requirements and data for the design
of displays and control actuators-
Part 1: Human interactions
Part 2: Displays
EN 894:2000 Part 3: Control actuators
EN 953:1997 Safety of machinery – Guards – General requirements for the design
and construction of fixed and movable guards
EN 954-1 Safety of machinery - Safety-related parts of control systems - Part l:
General principles for design
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 999 Safety of machinery – The positioning of protective equipment in
respect of approach speeds of parts of the human body
prEN 1005:1998 Safety of machinery – Human physical performance –
Part 1: Terms and definitions
Part 2: Manual handling of heavy weights associated with machinery
Part 3: Recommended force limits for machinery operation
EN 1037:1995 Safety of machinery – Prevention of unexpected start-up
EN 1050:1996 Safety of machinery - Principles for risk assessment
EN 1088:1995 Safety of machinery - Interlocking devices associated with guards –
Principles for design and selection
EN 1127–1:1997 Explosive atmospheres - Explosion prevention and protection –
Part 1: Basic concepts and methodology
EN 1760–1:1997 Safety of machinery - Pressure sensitive protective devices – Part 1:
General principles for the design and testing of pressure sensitive
mats and pressure sensitive floors
EN 1837 Safety of machinery – Integral lighting of machines

---------------------- Page: 7 ----------------------

Page 7
EN 12717:2001
EN ISO 3744:1995 Acoustics – Determination of sound power level of noise sources
using sound pressure – Engineering method in an essentially free
field over a reflecting plane
EN ISO 3746:1995 Acoustics – Determination of sound power level of noise
sources using sound pressure – Survey method using an
enveloping measurement surface over a reflecting plane
EN ISO 4871 Acoustics – Declaration and verification of noise emission
values of machinery and equipment
EN ISO 9614-1:1995 Acoustics – Determination of sound power level of noise
sources using sound intensity – Part 1: Measurement at discrete
points
EN ISO 11202:1995 Acoustics – Noise emitted by machinery and equipment –
Measurement method of emission sound power levels at the
work station and at other specified positions – Survey method in
situ
EN ISO 11204:1995 Acoustics - Noise emitted by machinery and equipment –
Method requiring environmental corrections
EN ISO 14122 Permanent means of access to machines and industrial plants
Part 2: Working platforms and gangways
Part 3: Stairways, stepladders and guard-rails
prEN 13478:1999 Safety of machinery - Fire prevention and protection
EN ISO 11688-1 Acoustics – Recommended practice for the design of low–noise
machinery and equipment - Part 1:Planning
ISO/TR 11688-2:1998 Acoustics – Recommended practice for the design of low–noise
machinery and equipment - Part 2: Introduction to the physics of
low-noise design
EN 60204-1:1997 Safety of machinery - Electrical equipment of machines - Part 1:
General requirements
EN 60529:1991 Degrees of protection provided by enclosures (IP Code)
EN 61496-1:1997 Safety of machinery - Electrosensitive protective equipment -
Part 1 - General requirements and tests
IEC 61496-2 Safety of machinery – Electro-sensitive protective equipment –
Part 2: Particular requirements for equipment using active opto-
electronic protective devices (AOPDs)
EN 50081-2 Electromagnetic compatibility - Generic emission standard –
Part 2: Industrial environment
EN 61000-6-2 Electromagnetic compatibility (EMC) – Part 6-2: Generic
standards - Immunity for industrial environments
(IEC 61000-6-2:1999)

---------------------- Page: 8 ----------------------

Page 8
EN 12717:2001
3 Terms and definitions
For the purposes of this standard, the following terms and definitions apply. For other terms
and definitions, see EN 292–1, EN 292–2/A1.
3.1
drilling machine
a machine designed to produce holes in cold metal by the use of a rotating cutting tool.
3.1.1
manual drilling machine
a machine where the axial motion of the cutting tool is controlled through the actuation of a
handwheel or lever (may include powered axial feed or powered unprogrammed positioning
of spindle or workpiece).
3.1.2
automatic drilling machine
a machine with the capability to perform programmed multiple position drilling operations.
3.2
workpiece transfer device
a mechanism integrated with the machine as a means of supplying a previously loaded
workpiece to a machine in exchange for a finished workpiece (e.g. pallet changing device).
3.3
work zone
the space where the metal cutting process can take place.
3.4
electronic handwheel
a manually operated control device which initiates and maintains an axis movement by
pulse generation input to the numerical control during its rotation.
4 List of significant hazards
4.1 The list of hazards contained in table 1 is the result of a hazard identification and
risk assessment carried out as described by EN 1050, for the wide range of drilling
machines covered by the scope of this standard. The safety requirements and/or measures
and information for use contained in clauses 5 and 7 are based on the risk assessment and
deal with the identified hazards by either eliminating them or reducing the effects of the
risks they generate.
4.2 The risk assessment assumes foreseeable access from all directions, as well as
unexpected start–up. Risks to both the operators and other persons who can have access
to the hazard zones are identified, taking into account hazards which can occur under
various conditions (e.g. commissioning, set–up, production, maintenance, repair,
decommissioning) during the life of the machine. The assessment includes an analysis of
the effect of failure in the control system.
4.3 In addition, the user of this standard (i.e. the designer, manufacturer, supplier) shall
validate that the risk assessment is complete for the machine under consideration with
particular attention to:

---------------------- Page: 9 ----------------------

Page 9
EN 12717:2001
– the intended use of the machine including maintenance, setting and cleaning, and its
reasonably foreseeable misuse;
– the identification of the significant hazards associated with the machine.
Table 1 - List of significant hazards and major sources of these hazards associated
with drilling machines
Description Example(s) of related Associated activity Related danger zone Clause 5
*
hazardous situation(s) Reference
1 Mechanical hazards
1.1 Crushing moving axes, tool setting, manual tool between fixed and Tables 2, 3
clamping exchange, moving elements of and 4
maintenance the machine (1.1.1–1.4.3)
1.2 Shearing moving axes manual operation between tool/ spindle
and table/ workpiece
1.3 Cutting or severing tool running drilling with hand held work zone
workpiece
1.4 Entanglement rotating spindle or tool workpiece load/ at spindle or tool
unload, positional
adjustment, manual
swarf/chip removal,
cutting fluid
application
other rotating parts (e.g. setting, cleaning, swarf/chip collection
conveyors, transmission maintenance and discharge zones,
elements) transmission
elements
1.5 Drawing–in or trapping rapid travel of table or power–operated envelope of Tables 2, 3
spindle head motion of workpiece movement of and 4
on table or tool in workpiece on table (1.1.1–1.4.3)
spindle axes; envelope of
movement of tool in
spindle head
rotating power maintenance in or around machine
transmission
mechanisms
1.6 Impact unintended movement during drilling with work zone
(rotation) of workpiece inadequate workpiece
clamping
rapid movement of during powered at machine
workpiece or spindle traverse
head,
automatic workpiece power-operated envelope of motion of
transfer workpiece transfer workpiece and
workpiece transfer
mechanisms
1.7 Stabbing or puncture handling tools during manual tool at sharp cutter faces (see clause
change 7)
handling swarf/chips during loading/ at workpiece, table, (see clause
unloading and and swarf /chip 7)
cleaning collecting and
discharge zones
2 Electrical hazards
2.1 Contact of persons contact with live parts or during electrical cabinet, 2.1
with live parts (direct connections commissioning, terminal boxes,
contact) maintenance, trouble control panels at
shooting machine
2.2 Contact of persons contact with live parts or during operation, at machine or faulty 2.2
with parts which have connections inspection and part
become live under maintenance of
faulty conditions machine
(indirect contact)

---------------------- Page: 10 ----------------------

Page 10
EN 12717:2001
Description Example(s) of related Associated activity Related danger zone Clause 5
*
hazardous situation(s) Reference
4
Hazards generated by noise
4.1 Hearing loss motion of power during operating cycle near machine 4.1
(deafness), other transmission elements, of machine
physiological cutting processes and
disorders (e.g. loss of fluid power systems
balance, loss of
awareness)
4.2 Interference with air blast used for during operating cycle near machine 4.2
speech cleaning of tool or of machine
communication, workpiece locations
acoustical signals
7 Hazards generated by materials and substances
7.1 Hazards from contact conditions near during operating cycle at or near machine 7.1
with or inhalation of machine caused by of the machine
harmful fluids, gases, ejection of particles of
mists, fumes, and work material, fluid
dusts droplets or mist from
metal working fluids
7.2 Fire or explosion flammable work during operating cycle at or near machine 7.2
material, flammable (low of the machine
flash point) metal
working fluids
7.3 Biological or micro– contact with hydraulic or during operation, at or near machine 7.3
biological (viral or metal working fluid as process control, and
bacterial) hazards liquid or mist containing maintenance
detritus and bacteria
8 Hazards generated by neglecting ergonomic principles in the design process
8.1 Unhealthy postures or lifting and reaching while during loading/ at load/unload and 8.1
excessive effort handling workpiece, unloading, process tool mounting
(repetitive strain) tools, and machine parts control, and positions,
maintenance maintenance action
points
8.2 Inadequate inappropriate location of during loading/ at load/unload and 8.2
consideration of hand- controls unloading, process tool mounting
arm or foot-leg control, and positions,
anatomy maintenance maintenance action
points
8.4 Inadequate local judgment and accuracy during loading at load/unload, tool 8.4
lighting of manual actions /unloading, process mounting positions
impaired during control, tool handling
handling/ positioning of
work materials and
cutters
8.6 Human errors, human reasonably foreseeable during loading/ at load/unload, tool 8.6
behaviour misuse, inadvertent unloading, process mounting positions
operation of controls, control, tool handling
incorrect work material
and cutter handling and
setting
8.7 Inadequate design, inadvertent operation of during setting, at or near machine 8.7
location or controls operating cycle
identification of
manual controls
8.8 Inadequate design or misinterpretation of during setting, at or near machine 8.8
location of visual displayed information operating cycle
display units

---------------------- Page: 11 ----------------------

Page 11
EN 12717:2001
Description Example(s) of related Associated activity Related danger zone Clause 5
*
hazardous situation(s) Reference
10 Unexpected start-up, unexpected overrun/ overspeed
10.1 Failure/disorder of the mechanical hazards during setting, at machine 10.1
control system associated with selected cleaning
machine movement
10.2 Restoration of energy unexpected movements during setting, at or near machine 10.2
supply after an of machine cleaning or
interruption maintenance
10.3 External influences on unpredictable behaviour during setting or at or near machine 10.3
the electrical of electronic controls operating cycle of
equipment due to electromagnetic the machine
interference
13 Failure of the power malfunctions of the during operation, at machine – machine 13
supply control with consequent process control, elements retained in a
misapplication of stored maintenance safe condition by the
energy or power. Power application of power
workholding fails, motor or fluid pressure.
overspeed. Part
breakage causes
machine elements to
move under residual
forces (inertia, gravity,
spring/ energy storage
means) causing external
elements to move
unexpectedly
14 Failure of the control Unexpected movement During setting, At or near machine 14
of machine cleaning or
circuit
maintenance
15 machine elements fail or 15
Errors of fitting
swing unexpectedly
17 Falling or ejected ejection of machine during machine at or near machine 17
parts, workpiece or tools operation
objects or fluids
caused by clamping
device, control system
failures or collision due
to data errors
18 unrestrained machine or during loading/ at machine 18
Loss of stability,
machine part unloading and
overturning of
(maintained in position process control, at
machinery
by gravity), falls or heavy/unwielding
overturns workpieces during
maintenance
(disassembly/
relocation)
19 Slip , trip, and fall of ejection or spillage of during workpiece machine table, floor 19
metal working fluids and load/unload, setting, area around machine
persons
lubricants (also hydraulic process control and and workpiece
fluid if used); work at maintenance permanent means of
heights work at heights access to the machine
work to replenish
fluids (e.g. lubricants)
* This list is derived from annex A of EN 1050: 1996.

---------------------- Page: 12 ----------------------

Page 12
EN 12717:2001
5 Safety requirements and/or protective measures
5.1 General requirements
Drilling machines shall comply with the safety requirements and/or protective measures of
this clause.
In addition, the drilling machine shall be designed according to the principles of EN 292 for
hazards relevant but not significant which are not dealt with by this standard.
5.2 Specific requirements
The specific safety requirements and/or protective measures for manual drilling machines
are detailed in table 2.
The specific safety requirements and/or protective measures for automatic drilling
machines are detailed in table 3.
The specific safety requirements and/or protective measures common to both manual and
automatic drilling machines are detailed in table 4.

---------------------- Page: 13 ----------------------

Page 13
EN 12717:2001
Table 2 – List of safety requirements and/or protective measures and their
verification procedures for manual drilling machines
Hazard Safety requirement and/or protective Verification
measure
1 Mechanical 1.1 Work zones
visual inspection
Access to mechanical hazards arising from rotating spindle/tools
of manual drilling machines shall be prevented by fixed or
adjustable guards or interlocked movable guards (Interlocking
devices shall be in accordance with EN 1088:1995). Where
guards are not practicable, these may be substituted by
protective devices.
1.1.1 Guards
visual inspection
Guard(s) shall enclose the spindle nose, chuck/toolholder, and
cutting tool to prevent access from at least the front and both
sides when the spindle/quill is at its normal rest position (see
figure A.6).
1.1.2 Protective devices
by visual inspection,
For some machine types (e.g. radial arm drilling machine) where
practical test
reasonably foreseeable applications can preclude the use of
guards, protective devices shall be provided (e.g. telescopic trip
device associated with a braking system).
Such protective devices shall be located no more than 150 mm
from the outside diameter of each spindle of the machine and in
the first quadrant of spindle rotation from the operator’s normal
position (see figure A.7).
1.1.3 Spindle braking
Stopping performance of spindle braking systems associated measurement
with a trip device shall have a minimum capability as follows:
spindle RPM (n) max. revolutions to stop
n  1
250 < n  2
1000 < n 3
n > 1500 4
1.2 Workpiece holding
For all manual drilling machines, the manufacturer shall visual inspection
incorporate facilities to securely affix the workpiece to the work
table (e.g. through holes, T slots, mounting holes – see figure
A.8).
NOTE Crushing hazards are not normally considered significant for manual drilling machines.

---------------------- Page: 14 ----------------------

Page 14
EN 12717:2001
Table 3 – List of safety requirements and/or protective measures and their
verification procedures for mechanical hazards associated with automatic drilling
machines
Hazards Safety requirement and/or protective measure Verification
1 Mechanical 1.1 Work zone
1.1.1 Primary safeguards
Visual inspection
The work zones of automatic drilling machines shall be safeguarded.
The guarding arrangements shall be designed to prevent access to
hazardous situations.
NOTE General guidance for the design selection of safeguards, where
the hazards from moving parts cannot be avoided by design is given in
4.1, 4.2 and table 1 of EN 292-2: 1991.
For the purposes of this clause,
1) all protective equipment shall be in accordance with the following:
in accordance with EN 61496-1:1997 (ESPE), in accordance with
IEC 61496-2:1997, category 4 (AOPD), in accordance with
EN 61496-1:1997 (PSPD).
2) Guards shall be in accordance with EN 953:1997,
1.1.2 Guarding strategies
1.1.2.1 General
The work zone shall be enclosed where possible by fixed and/or Visual inspection,
interlocked movable guards during machining operations. Where assessment
enclosure is not reasonably practicable (e.g. due to the size of the
workpiece, its geometry, other special characteristics of the machine or
its application), operators and other exposed persons shall be
safeguarded by a combination of other means (e.g. protected operator
position (cabin), perimeter guarding, other protective devices).
1.1.2.2 Enclosure
Visual inspection,
Where reasonably practicable, work zone guarding shall be fixed to the
examination of
structure of the machine (see 3.2.1 of EN 953: 1997) (see also guard
characteristics below and figures A.3, A.4). drawings
1.1.2.3 Alternatives to enclosures
Visual inspection
Access to the work zone, by the operator, from the normal (fixed)
operating position shall be prevented by local guarding (typically
forming a cabin). Access to the cabin shall not require entry into the
hazard zone enclosed by perimeter fencing or other protective devices.
Where this is not possible because of the machine configuration or
other operating constraints, the access route to the operating position
shall not require approach to hazardous situations.
Where the machine operator requires access to the work zone from the V
...