EN 710:1997/FprA1

SLOVENSKI STANDARD
01-november-2009
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SULSDGDMRþRRSUHPR
Safety of machinery - Safety requirements for foundry moulding and coremaking
machinery and plant associated equipment
Sicherheit von Maschinen - Sicherheitsanforderungen an Gießereimaschinen und -
anlagen der Form- und Kernherstellung und dazugehörige Einrichtungen
Sécurité des machines - Prescriptions de sécurité applicables aux machines et chantiers
de moulage et de noyautage en fonderie et à leurs équipements annexes
Ta slovenski standard je istoveten z: EN 710:1997/FprA1
ICS:
13.110 Varnost strojev Safety of machinery
25.120.30 Livarska oprema Moulding equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
FINAL DRAFT
EN 710:1997
NORME EUROPÉENNE
EUROPÄISCHE NORM
FprA1
September 2009
ICS 25.120.30
English Version
Safety of machinery - Safety requirements for foundry moulding
and coremaking machinery and plant associated equipment
Sécurité des machines - Prescriptions de sécurité Sicherheit von Maschinen - Sicherheitsanforderungen an
applicables aux machines et chantiers de moulage et de Gießereimaschinen und -anlagen der Form- und
noyautage en fonderie et à leurs équipements annexes Kernherstellung und dazugehörige Einrichtungen
This draft amendment is submitted to CEN members for unique acceptance procedure. It has been drawn up by the Technical Committee
CEN/TC 202.
This draft amendment A1, if approved, will modify the European Standard EN 710:1997. If this draft becomes an amendment, CEN
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this amendment
into the relevant national standard without any alteration.
This draft amendment 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 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.
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
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 710:1997/FprA1:2009: E
worldwide for CEN national Members.

Contents Page
Foreword .3
1 Modification of the title .4
2 Modification to "Contents" .4
3 Modification to "Foreword" .4
4 Modification to "Introduction" .4
5 Modification to Clause 2, "Normative references" .4
6 Modification to Clause 3, "Definitions" .6
7 Modifications to Clause 4, "Hazards" . 10
8 Modifications to Clause 5, "Safety requirements and measures" . 10
9 Modifications to 5.2 to 5.8 . 13
10 Modification to Clause 6, "Verification of the safety requirements and preventative
measures according to clause 5" . 42
11 Modification to Clause 7, "Information for use" . 43
12 Modification to Annex A . 46
13 Modification to Annex B . 49
14 Modification to Annex C . 49
15 Modification to Annex ZA . 50
16 Addition of Annex ZB . 50

Foreword
This document (EN 710:1997/FprA1:2009) has been prepared by Technical Committee CEN/TC 202 “Foundry
machinery”, the secretariat of which is held by DIN.
This document is currently submitted to the Unique Acceptance Procedure.
This document 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 Directive(s), see informative Annexes ZA and ZB, which are an integral part of this
document.
The new safety requirements as stated in this document comply with the additional relevant Essential
Requirements of the new Machinery Directive 2006/42/EC complementing the existing Machinery Directive
98/37/EC.
1 Modification of the title
st
Add as 1 element of the English, German and French titles the following:
"Safety of machinery"
"Sicherheit von Maschinen"
"Sécurité des machines"
2 Modification to "Contents"
Add list of "Tables" at the end of the content.

3 Modification to "Foreword"
rd
Replace the 3 paragraph with the following:
"For relationship with EU Directive(s), see informative Annexes ZA and ZB, which are an integral parts of this
document."
4 Modification to "Introduction"
Replace the existing text with the following:
"This European Standard is a type C standard as stated in EN ISO 12100.
The machinery concerned and the extent to which hazards, hazardous situations and events are covered are
indicated in the scope of this European Standard.
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 over the provisions of the other standards, for machines
that have been designed and built according to the provisions of this type C standard.
Where for clarity an example of a preventive measure is given in this European Standard, this should not been
considered as the only possible solution. Any other solution leading to the same risk reduction is permissible if
an equivalent level of safety is achieved."

5 Modification to Clause 2, "Normative references"
st
Replace the 1 paragraph with the following:
"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."
Replace the list of normative references with the following:
"EN 349, Safety of machinery — Minimum gaps to avoid crushing of parts of the human body
EN 574, Safety of machinery — Two-hand control devices — Functional aspects — Principles for design
EN 614-1, Safety of machinery — Ergonomic design principles — Part 1: Terminology and general principles
EN 614-2, Safety of machinery — Ergonomic design principles — Part 2: Interactions between the design of
machinery and work tasks
EN 746-2, Industrial thermoprocessing equipment — Part 2: Safety requirements for combustion and fuel
handling systems
EN 842, Safety of machinery — Visual danger signals — General requirements, design and testing
EN 894-1, Safety of machinery — Ergonomics requirements for the design of displays and control
actuators — Part 1: General principles for human interactions with displays and control actuators
EN 894-2, Safety of machinery — Ergonomics requirements for the design of displays and control
actuators — Part 2: Displays
EN 894-3, Safety of machinery — Ergonomics requirements for the design of displays and control
actuators — Part 3: Control actuators
EN 953, Safety of machinery — Guards — General requirements for the design and construction of fixed and
movable guards
EN 981, Safety of machinery — System of auditory and visual danger and information signals
EN 999, Safety of machinery — The positioning of protective equipment in respect of approach speeds of
parts of the human body
EN 1005-2, Safety of machinery — Human physical performance — Part 2: Manual handling of machinery
and component parts of machinery
EN 1088, Safety of machinery — Interlocking devices associated with guards — Principles for design and
selection
EN 1093-1, Safety of machinery — Evaluation of the emission of airborne hazardous substances — Part 1:
Selection of test methods
EN 1265, Noise test code for foundry machines and equipment
EN 1299, Mechanical vibration and shock — Vibration isolation of machines — Information for the application
of source isolation
EN 1539, Dryers and ovens, in which flammable substances are released — Safety requirements
EN 13861, Safety of machinery — Guidance for the application of ergonomics standards in the design of
machinery
EN 14253, Mechanical vibration — Measurement and calculation of occupational exposure to whole-body
vibration with reference to health — Practical guidance
EN 60204-1:2006, Safety of machinery — Electrical equipment of machines — Part 1: General requirements
(IEC 60204-1:2005, modified)
EN 61310-1, Safety of machinery — Indication, marking and actuation — Part 1: Requirements for visual,
acoustic and tactile signals (IEC 61310-1:2007)
EN 61310-2; Safety of machinery — Indication, marking and actuation — Part 2: Requirements for marking
(IEC 61310- 2:2007)
EN 60447, Basic and safety principles for man-machine interface — Marking and identification — Actuating
principles (IEC 60447:2004)
EN 61496-1, Safety of machinery — Electro-sensitive protective equipment — Part 1: General requirements
and tests (IEC 61496-1:2004, modified)
EN ISO 7731, Ergonomics — Danger signals for public and work areas — Auditory danger signals (ISO
7731:2003)
EN ISO 11064-1, Ergonomic design of control centres — Part 1: Principles for the design of control centres
(ISO 11064-1:2000)
EN ISO 11688-1, Acoustics — Recommended practice for the design of low-noise machinery and equipment
— Part 1: Planning (ISO/TR 11688-1:1995)
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 13849-1, Safety of machinery — Safety-related parts of control systems — Part 1: General principles
for design (ISO 13849-1:2006)
EN ISO 13850, Safety of machinery — Emergency stop — Principles for design (ISO 13850:2006)
EN ISO 13857:2008, Safety of machinery — Safety distances to prevent hazard zones being reached by
upper and lower limbs (ISO 13857:2008)
ISO 6184-1, Explosion protection systems — Part 1: Determination of explosion indices of combustible dusts
in air
ISO 3864-1, Graphical symbols — Safety colours and safety signs — Part 1: Design principles for safety signs
in workplaces and public areas
ISO 7000, Graphical symbols for use on equipment — Index and synopsis"

6 Modification to Clause 3, "Definitions"
Replace the entire Clause 3 with the following:
"3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 12100-1:2003, EN ISO 12100-
2:2003 and the following apply.
NOTE Definitions used in EN and ISO standards referred to in this European Standard are also valid for this
European Standard.
3.1
moulding machinery
machines used to make sand moulds. There are various machinery types which compact granular moulding
materials including:
 jolt moulding machines (compaction by jolting the moulding machine deck),
 squeeze moulding machines (compaction by squeezing the pattern equipment and the moulding sand
together),
 jolt and squeeze moulding machines,
 shoot-/blow- and squeeze moulding machines,
 impulse moulding machines (the moulding sand is compacted by a compression wave which acts on the
top of the sand fill),
 air-flow-squeeze moulding machines (similar to impulse-moulding machines, except that the compressed
air escapes through nozzles in the pattern plate),
 dynamic squeeze moulding machines (compensating pressure squeeze pistons act on the top of the sand
fill),
 suction and squeeze moulding machines (the pressure differential between the moulding box and the
pattern draws in the moulding sand),
 vacuum-moulding machines (unbonded sand is compacted by vacuum),
 sand slingers (the moulding sand is flung into the moulding box by the centrifugal force of a rotating
wheel).
3.2
moulding plant
equipment used to make ready-to-pour sand moulds. A moulding plant consists of moulding stations
(automatic moulding machines for complete moulds) or several moulding machines (moulding group) that
produce the moulding parts separately. It may also include lines for core setting, mould closing, weighting or
clamping, pouring, cooling, knocking-out of the mould parts and emptying of the boxes as well as integral
transfer systems linking the various stations and lines
3.3
disposable mould
mould that is destroyed to remove the casting
3.4
core making machinery
machines used to make solid and/or hollow cores and they are classified into core shooters and core blowers.
The principle of core shooting is to rapidly expand compressed air via the sand reservoir into the sand. The
sand is then fluidized by the airstream and the sand–air-mix is transported into the core box. The principle of
core blowing is to transport the sand by means of compressed air into the core box (direct working). The sand
is conveyed along in front of the compressed air
3.5
coremaking plant
equipment used to make ready-to-use cores (single cores and/or core assemblies). A plant may consist of a
sand preparation plant, core making machine, equipment for handling, deflashing, assembling, coating and
drying of cores
3.6
conditioning equipment
equipment and plant used to prepare ready-to-use bonded sands, including equipment for its conveyance and
storage
3.7
sand mixers and mills
machines for batch mixing (blending, coating, kneading) of moulding or core sand with bonding agents, water
and complementary mould material additions. The machines are provided with rotating paddles and/or milling
rollers and fast rotating paddles for the aeration of the material. Typically, machines consist of a circular
container in which are mounted rotating ploughs and/or mill wheels (mullers).
3.8
machines for continuous mixing
machines in which the contents are continuously mixed and conveyed to the discharge gate
3.9
sand aerators
machines used to aerate the mixed sand such as belt aerators (conveyor belt with impact bars) or wheel
aerators (drum with impact bars)
3.10
spike disintegrators
disintegrators with a horizontal or a vertical rotating axis. Used and lump sand is conveyed axially to the
disintegrator wheels. The disintegrator wheels are normally provided with projections and rotate in opposite
directions
3.11
installations for the storage and pneumatic conveyance of coal dust or coal dust substitutes and their
mixtures with bonding agents
silos and pipework that are filled pneumatically with such material and by which the material is supplied
pneumatically to the next operation (e. g. sand mixers)
3.12
sand dryers and heaters
plant consisting of a heating system and/or subsequent cooling equipment
3.13
reclamation equipment
equipment and plant including storage and conveying facilities used for the reclamation of used sands by
mechanical and/or thermal processing means
3.14
sand lump crushers
machines used to break down lumps of used sand by mechanical means
3.15
thermal reclamation ovens
machines used to destroy the binder by thermal means
3.16
mechanical reclamation machines
machines used to destroy the binder by mechanical means
3.17
magnet separators
machines used to separate ferro-magnetic material from the used sand
3.18
screening installations
machines used to classify used sands (this may be achieved by vibration, rotation or other means)
3.19
gassing equipment
equipment used to produce and/or condition reactive gasses and supply them to the gassing station or into
the sand mixture. Typical processes are:
binder system reactive gas
silicate ………………. CO
urethane (coldbox) ………. amine
furane resin/peroxide
or epoxy resin/peroxide ….
SO
alkaline resin ………………. methyl-formate
inorganic binders ……. hot air (as dehydration assistance)

3.20
knock-out equipment
equipment used to separate castings from the moulding box and/or the mould and/or cores from castings
3.21
punch-out equipment
equipment used to separate the mould and castings from the moulding box by vertical or horizontal movement
of a punch-out piston
3.22
rotary knock-out and/or cooling drum
rotating or reciprocating cooling drum through which sand and castings are conveyed and separated. The
rolling movement of the castings breaks up the lumps of sand as the drum rotates
3.23
knock-out grid
a grid provided with a vibrating facility for the separation of moulding sand from the moulding box and/or from
the casting
3.24
knock-out tray
oscillating conveyor for the separation of casting and moulding material
3.25
modes of operation
moulding/core making machinery and equipment (single machines or groups of interconnected parts) can
function under different modes of operation
a) setting
all the steps within a process can be initiated separately and manually in any sequence, e. g., mould changing
or pattern changing
b) manual
all the steps within a process can be initiated separately in the sequence of, or out of the sequence of, the
programme, e. g., termination of a moulding cycle or continuation of a moulding cycle for testing or fault
detection
c) step
each part of a cycle is initiated manually and then proceeds to completion in the pre-determined sequence
d) semi-automatic
after a start-initiation a complete manufacturing cycles is completed in the pre-determined sequence
e) automatic
each cycle is initiated by the previous cycle, e. g., continuous operation"

7 Modifications to Clause 4, "Hazards"
Replace Clause 4 and its heading with the following:"
4 Significant Hazards
"The significant hazards, hazardous situations and events, as far as they are dealt with in this document,
identified by risk assessment as significant for these types of machinery and which require action to eliminate
or reduce the risk, are listed in Clause 5, Table 1, together with the appropriate safety measures."

8 Modifications to Clause 5, "Safety requirements and measures"
Replace the heading of Clause 5 with the following: "Safety requirements and/or protective measures".
Replace in Clause 5 the hanging paragraph at the beginning and sub-clause 5.1 with the following:
"5.1 General
5.1.1 Machinery shall comply with the safety requirements and/or protective measures formulated in
Table 1 in relation with the different significant hazards. In addition, the machine shall be designed according
to the principles of EN ISO 12100-2 for relevant but not significant hazards which are not dealt with by this
document.
5.1.2 Fixed guards
These guards shall be designed in accordance with EN ISO 12100-2, EN ISO 13857 and EN 953.
These guards shall also be designed to contain processed materials, fluids or parts that can foreseeable be
ejected or to contain emissions of substances or noise if applicable.
Where practical, these guards shall be fixed to the machine structure.
If floor mounted, these guards shall be securely fixed and have a minimum height of 1,4 m and be positioned
at a sufficient distance from the danger zone in accordance with Table 1 of EN ISO 13857:2008.
The installation of fixed covers is sufficient for safeguarding danger zones when there is no need to reach in or
walk in during normal operation.
5.1.3 Movable guards
5.1.3.1 Detection and monitoring
Movable guards in danger zones with fixed cycle intervention or access (e.g. during loading and unloading of
parts), set-up activities, periodical manual cleaning or spraying or troubleshooting is required, shall incorporate
guard interlocking according to EN 1088.
When the guard is open, the drive power supply for the relevant hazardous movements shall be positively
disconnected.
5.1.3.2 Interlocking guard with guard locking
An interlocking guard with guard locking effective within the hazardous period shall be used when the stopping
time of the hazardous movement is greater than the access time of a person in reaching the danger zone.
5.1.3.3 Closing the guards
Closing the guards shall not initiate operation of hazardous movements. If movement was interrupted by
opening of an interlocked danger zone guard, the restart shall be performed by actuation from outside the
guard.
5.1.3.4 Power operated guards
Power operated guards shall not create a trap. Either the power provided shall be insufficient to cause injury in
the event of trapping, or the guard shall be provided with a safety trip device to prevent injury.
Actuation of the safety trip device shall stop or reverse the direction of movement of the movable guard.
5.1.4 Electro-sensitive protective devices (ESPD)
If electro-sensitive protective devices (see EN 61496-1) are used then the following requirements shall be
met:
a) the control system of the machine shall be able to interrupt the hazardous movement in time when it
receives the output signal from such a protective device;
b) they shall switch on if the control system of the machine is connected,
c) they shall be tested at each machine cycle;
d) they shall not act as control devices;
e) they shall not be adjustable neither in the vertical nor in the horizontal direction;
f) they shall be interlocked with the hazardous movements of the machine;
g) the output-signals of such devices shall be independent of the electronic control system of the machine or
shall be connected to failsafe PLC;
h) the protective field of such devices shall cover the access area;
i) they shall be positioned so that persons cannot remain between the protective field of the device and the
danger zone and initiate a machine cycle;
j) their position, in relation to the danger zone, shall take into account the machine stopping time, the
approach speed of the operator and the initiation time of the device (see EN 999).
5.1.5 Two-hand control devices
If two-hand control devices (see EN 574) are used, then the following requirements shall be met:
a) the control system of the machine shall be able to interrupt the hazardous movement in time if one actuator
of this device is released;
b) they shall comply with type IIIB of EN 574;
c) they shall be interlocked with the hazardous movements of the machine;
d) their output-signals shall be independent of the electronic control system of the machine or shall be
connected to failsafe PLC;
e) their position, in relation to the danger zone, shall take into account the machine stopping time, the
approach speed of the operator and the initiation time of the device (see EN 999).
5.1.6 Several persons at the same time occupied at hazardous points
When machinery and plant require frequent intervention (i. e. for feeding and/or removing of parts) and if
several persons are occupied at the same time at hazardous points of machinery and plant, each person shall
be protected (e.g. by movable guards, two-hand control devices or electro-sensitive protective devices) so that
they will not be mutually endangered during that intervention.
5.1.7 Control systems
Where access to the danger zone is required during normal operation (EN ISO 12100-2:2003, 4.1.3) the
safety related control systems of the equipment, including the interlocking devices, shall be in accordance with
performance level PL=e and category 4 as specified in EN ISO 13849-1.
Where access to the danger zone is required for maintenance and setting activities, troubleshooting or
cleaning the electric/electronic components of the safety related control systems of the equipment including
the interlocking devices, shall be in accordance with at least performance level PL=d and category 2 as
specified in EN ISO 13849-1. The hydraulic and pneumatic equipment shall comply with at least performance
level PL=c and category 1 as specified in EN ISO 13849-1.
If these tasks can only be performed whilst the protective device is switched off, lockable mode selection
switches shall be provided for the disconnection of the protective device and the simultaneous transition to
setting mode. Hazardous movements shall be interrupted immediately when the manual control actuator(s) is
released. Unsecured movements of dangerous parts shall be prevented e.g. gravity fall. When reduced speed
of such movements is used to permit maintenance and setting activities the control system in this mode shall
comply with performance level PL=e and category 4 as specified in EN ISO 13849-1.
When there are electronic components within the machine control system, the interlocking of the safety
functions (emergency stop, interlocking, electro-sensitive protective devices or two-hand control devices) shall
be independent of the electronic control system of the machine or shall be connected to failsafe PLC. If the
monitoring is achieved by an electronic system then the signals shall be connected to an electronic control
system by separate input modules.
Limit switches within controls shall be arranged or installed so that no unintended start can be initiated.
The machine shall be so designed, that it will stop immediately at any point in its cycle when an emergency
stop (see EN ISO 13850) is activated or a safety function or device (see EN 1088) has become inoperative.
5.1.8 Ergonomics
EN 13861 shall be used as a guideline for considering ergonomic aspects in the design of moulding and core
making machinery and plant and associated equipment. Particular consideration shall be given to EN 614-1,
EN 614-2, EN 894-1, EN 894-2, EN 894-3, EN 60447 and EN ISO 11064-1.
For the manual handling of loads (e. g. flasks, setting, removal of cores or patterns, maintenance) see
EN ISO 12100-2, EN 614-1 and EN 1005-2.
5.1.9 Noise
Noise emitted by the plant is a significant hazard, and the manufacturer shall give consideration to means to
reduce the hazard. Noise hazards and measures are considered in Table 1.
Noise measurement and declaration shall be made according to EN 1265.
5.1.10 Vibrations
Vibration hazards and measures are considered in Table 1.
Vibrations shall be considered at the design stage using the guidance given in EN 1299 as appropriate.
Moulding and core making machines are not expected to create harmful hand-arm vibration.
NOTE 1 Where the hands or arms of the worker(s) are subjected to a vibration emission having a weighted root mean
square acceleration exceeding 2,5 m/s the actual value should be stated. When experience has shown that the
magnitude of hand-arm vibration is in general significantly below 2,5 m/s it is sufficient to mention that the acceleration is
below this limit.
Where the risk of whole-body vibration is given in Table 1, measurement according to EN 14253 shall be
made.
NOTE 2 Where the body of the worker(s) is subjected to a whole body vibration emission exceeding 0,5 m/s , the
single whole-body vibration value (weighted root mean square acceleration) should be stated.
5.1.11 Structure of Table 1
The following Table 1 is developed to allow the designer and manufacturer of the equipment to apply a logical
approach for checking the design against the list of significant hazards with respect to the different types of
machinery covered by the scope of this standard.
Table 1 is structured as follows:
 column 1 identifies the significant hazards;
 column 2 describes the hazardous situations;
 column 3 describes possible injuries;
 columns 4 and 5 are specifying preventative measures to avoid or minimize the hazards;
 column 6 identifies the verification methods to be used to demonstrate conformity."
9 Modifications to 5.2 to 5.8
Replace sub-clauses 5.2 to 5.8 with the following new Table 1:

"Table 1 — List of significant hazards, hazardous situations safety requirements and/or measures
Column 1 Column 2 Column 3 Column 4 Column 5 Column 6
Significant Preventative measures
Hazardous situation Risk/Mode of operation Particular preventative measures Verification
Hazard according to EN ISO 12100
5.2 Conditioning and reclamation equipment
5.2.1 Preventative measures against injuries due to mechanical hazards
5.2.1.1 Sand mixers, mills and coolers
1 Movement of the mixing Injury to hands when sampling 3.25.1/part 1 (Fixed guard) ref. sub-clauses 5.1.2, 5.1.3 and 5.1.7 6.2.1/6.2.2
Crushing, shearing, and milling tools within the from above or at the discharge;
3.25.5/part 1 (Interlocking guard 6.2.1/6.2.2
drawing-in mixing or cooling plate or cleaning of discharge from
with guard locking)
trough. outside; cleaning of screw of
continuous mixers.
5.5.4/part 2 (Provisions for 6.2.1
isolation and energy dissipation)
Movement of the mixing Injury to arms, head and body 3.26.1/part 1 (Interlocking device) ref. sub-clause 5.1.7 6.2.1
and milling tools during when touching tools.
Interlocking of the movement of tools with the
rotation when they are
lifting movement of the swivel arm.
being removed or
reinserted into the mixing
4.10/part 2 (Preventing hazards Means to prevent the falling of the swivel arm:
plate;
from pneumatic and hydraulic Spring-loaded jacks or lock bolts, check valve
equipment) or control valve for the swing-out components
Unexpected gravity fall of
that lock automatically when there is a pressure
the raised swivel arm
drop or release.
Examples for 4.10/part 2 see Annex A
2 Where there is the Danger to persons working inside 3.25.5/part 1 (Interlocking guard ref. sub-clauses 5.1.2, 5.1.3 and 5.1.7 6.2.1/6.2.2
Crushing, shearing possibility of entry into the (cleaning or maintenance) from with guard locking)
Disconnecting switch for the mixer/mill/cooler
mixer, mill or cooler unexpected start-up.
4.11.4/part 2 (Safety against with lock-off.
NOTE During maintenance,
spontaneous restart)
Access door shall be secured against 6.2.1
several employees may be working
4.12.1 to 4.12.3, 4.11.6 and
unintended closing and locking.
on the conditioning/ reclaiming
4.11.9/part 2 (Safety against
equipment.
Permanent and clear warning sign "danger 6.2.2
hazards due to failure of the
zone" and additional sign "before entry, the
control or malfunction if
6.10/6.2.1
mixer shall be shut-off and secured against
applicable in a cumulative way)
restart by the person(s) who enter(s)".
5.5.4/part 2 (Provisions for
isolation and energy dissipation)

Table 1 (continued)
Column 1 Column 2 Column 3 Column 4 Column 5 Column 6
Significant Preventative measures
Hazardous situation Risk/Mode of operation Particular preventative measures Verification
Hazard according to EN ISO 12100
3 Manual loading Increased fatigue 4.8/part 2 (Observing ergonomic see EN 1005-2 6.2.1
Neglected ergo- principles)
nomic principles
4 Noise from working Loss of awareness 4.2/part 2 (Making machines Drives as silent as possible, rpm as low as 6.8
Noise processes inherently safe by virtue of .) possible (see EN ISO 11688-1)
4.8.4/part 2 (Avoiding as far as
possible noise, vibration, thermal
effects)
5.1/part 2 (Safeguarding)
5 Noise from working Danger of accident 4.2/part 2 (Making machines Drives as silent as possible, rpm as low as 6.8
Interference with processes inherently safe by virtue of .) possible (see EN ISO 11688-1)
speech communi-
4.8.5.1/part 2 (Avoiding as far as
cation and acoustic
possible noise, vibration, thermal
signals
effects)
5.1/part 2 (Safeguarding)
5.2.1.2 Sand aerators
1 The discharge point and Injury to hands or upper/lower 3.25.1/part 1 (Fixed guard) Prevent access into the danger zone by 6.2.1
Crushing, shearing the entry point especially limbs provision of a suitable guard.
of the aerating belt or
ref. sub-clauses 5.1.2, 5.1.3 and 5.1.7
aerating drum to
enclosure create a pinch
point.
When maintenance is 3.25.5/part 1 (Interlocking guard 6.2.1
being carried out with guard locking)
5.5.4/part 2 (Provisions for 6.2.1/6.2.2
isolation and energy dissipation)
Table 1 (continued)
Column 1 Column 2 Column 3 Column 4 Column 5 Column 6
Significant Preventative measures
Hazardous situation Risk/Mode of operation Particular preventative measures Verification
Hazard according to EN ISO 12100
2 Noise from working Hearing loss, 4.2/part 2 (Making machines Drives as silent as possible, rpm as low as 6.8
Noise processes inherently safe by virtue of .) possible, isolation of structure borne noise of
loss of awareness
aerator casing against the drive, deadening of
4.8.4/part 2 (Avoiding as far as
the aerator casing
possible noise, vibration, thermal
effects) (see EN ISO 11688-1)
5.1/part 2 (Safeguarding)
3 Noise from working Danger of accident 4.2/part 2 (Making machines Drives as silent as possible, rpm as low as 6.8
Interference with processes inherently safe by virtue of .) possible, isolation of structure borne noise of
speech communi- aerator casing against the drive, deadening of
4.8.4/part 2 (Avoiding as far as
cation and acoustic the aerator casing (see EN ISO 11688-1)
possible noise, vibration, thermal
signals
effects)
5.1/part 2 (Safeguarding)
5.2.1.3 Spike disintegrators (disintegrators for used sand)
1 Openings in the machine If during inspection/cleaning/ 3.25.5/part 1 (Interlocking guard ref. sub-clauses 5.1.2, 5.1.3 and 5.1.7 6.2.1
Crushing, shearing body could create a pinch trouble-shooting there is with guard locking)
point during wheel unintended/unexpected start-up
movement or the covers are opened before
5.5.4/part 2 (Provisions for 6.2.1/6.2.2
the wheel has stopped then
isolation and energy dissipation)
injuries to the operator could
result
2 as 5.2.1.2 as 5.2.1.2 as 5.2.1.2 as 5.2.1.2 6.8
Noise
3 as 5.2.1.2 as 5.2.1.2 as 5.2.1.2 as 5.2.1.2 6.8
Interference with
speech communi-
cation and acoustic
signals
Table 1 (continued)
Column 1 Column 2 Column 3 Column 4 Column 5 Column 6
Significant Preventative measures
Hazardous situation Risk/Mode of operation Particular preventative measures Verification
Hazard according to EN ISO 12100
5.2.1.4 Sand lump crushers
1 Openings provided in the Danger from crusher movement if 3.25.5/part 1 (Interlocking guard ref. sub-clauses 5.1.2, 5.1.3 and 5.1.7 6.2.1
Crushing, shearing, machine body for there is unexpected start-up or if with guard locking)
impact inspection, maintenance the hinged covers are opened
of tools, cleaning before the crusher has stopped.
5.5.4/part 2 (Provisions for 6.2.1/6.2.2
isolation and energy dissipation)
Ejection of lumbs.
2 as 5.2.1.2 as 5.2.1.2 as 5.2.1.2 Drives as silent as possible, deadening of the 6.8
Noise crusher casing
(see EN ISO 11688-1)
3 as 5.2.1.2 as 5.2.1.2 as 5.2.1.2 Drives as silent as possible, deadening of the 6.8
Interference with crusher casing
speech communi-
(see EN ISO 11688-1)
cation and acoustic
signals
4 Machinery vibration may Stress to human joints, nerves Isolation of vibration at the installation of sand 6.9
Vibration have effects on the and blood vessels due to whole lump crushers producing vibrations.
adjoining work places body vibration.
ref. sub-clause 5.1.10
5.2.1.5 Screening equipment
1 Pinch points are created if Injury to the operator during 3.22.4/part 1 (Interlocking guard) ref. sub-clauses 5.1.2, 5.1.3 and 5.1.7 6.2.1
Drawing-in, the doors are opened du- operation, maintenance,
trapping, shearing ring rotation of the cleaning, trouble-shooting.
equipment or doors are
not closed before the
equipment starts
Table 1 (continued)
Column 1 Column 2 Column 3 Column 4 Column 5 Column 6
Significant Preventative measures
Hazardous situation Risk/Mode of operation Particular preventative measures Verification
Hazard according to EN ISO 12100
5.2.1.6 Magnetic separators
1 Unprotected discharge of Danger to eyes and body Proper metal separation. 6.2.1/6.2.2
Stabbing or ferromagnetic material
Shielding of separator discharge without
puncture from the magnetic
creating pinch points.
separator
ref. sub-clause 5.1.2
Presence of tramp metal
in the sand, therefore also
Warning sign requesting eye protection. 6.10
danger when operating
NOTE The choice of the magnetic separator
sand slingers
depends on the weight and geometry of the iron parts
to be separated and either their temperature or
surrounding temperature, the degree of the alloy, the
velocity of the belt conveyor and - in case of
magnetic-belt separators - on the lowest possible
distance between the magnet and the belt conveyor.
There should be no components of magnetic material
within the affected space (e.g. metal sheets,
construction parts, idlers).
2 Touching of moving parts Injuries to arms 3.25.1/part 1 (Fixed guard) 6.2.1/6.2.2
Crushing, drawing- of the conveyor
in
5.2.2 Measures against hazards caused by substances
5.2.2.1 Magnetic separators
1 Feeding and discharging Danger from breathing quartz 5.3.2.1/part 2 (Functions of Equipment for dust reduction are , e. g., 6.2.1/6.2.2/
Inhalation of fumes sand dust guards) enclosed charging and discharging of sand or 6.7
and dusts material accompanied with sand, prevention of
spills and leaks, no gravity fed enclosures
connected to exhaust systems, possibility for
ventilation.
Ref. sub-clause 7.4.1
Table 1 (continued)
Column 1 Column 2 Column 3 Column 4 Column 5 Column 6
Significant Preventative measures
Hazardous situation Risk/Mode of operation Particular preventative measures Verification
Hazard according to EN ISO 12100
Feeding and discharging Damage to health from airborne 5.3.2.1/part 2 (Functions of Local exhaust ventilation 6.2.1/6.2.2/
during the reclamation of formaldehyde, phenol, guards) 6.7
ref. sub-clause 7.4.1
used sand, mixers for furfurylalcohol both for breathing
resin-bonded mould and and for skin contacts
Design to avoid the use of excessive binder, to 6.2.1
core sand
provide for automatic dosing
or enclosed dosing and to avoid skin contact
2 Supply of resin and Fire and explosion hazard when The supply of resin and hardener shall only be 6.2.1
Exothermic hardener which cause an no sand in machine or hoses possible if probes within the equipment indicate
reactions exothermic reaction wrongly connected that there is a sufficient quantity of sand.
Injury to respiratory tracts from Connecting hoses shall be marked and
breathing harmful gases. Cau- designed to prevent interchangeability e. g. with
terization because of skin contact left-hand threads for hardeners and right-hand
threads for the other materials (e. g. binders)
NOTE: Continuous conveyors are not covered by the scope of this standard. If continuous conveyors are part of the conditioning and reclamation plant and their operation creates a particular risk of dust and
fumes the relevant preventative measures also apply to this equipment.
5.2.2.2 Sand dryers and heaters
1 Gas fired equipment Ignition procedure, control failure, see EN 746-2 6.2.1/6.2.2
Explosion flow failure
2 No possibility of escape Trapping inside the equipment Emergency exit, duplicate opening mechanism 6.2.1/6.2.2
Trapping from inside of walk-in during maintenance actuated also from the inside.
ovens with doors
Unintended locking of
doors when a person is
inside the oven
5.2.2.3 Equipment for the storage and pneumatic conveyance of coal dust or coal dust substitutes and their mixtures with bonding agents
1 Import or creation of Burning and injuries by explosion Steep outflow (at least at an angle of 70° 6.2.1
Fire, explosion undetected burnings or effects against the horizontal) and rounded edges, if
electrostatic charging in necessary aeration installations for the
silos and plants for avoidance of deposits, blockages and bridging.
pneumatic conveyance
Table 1 (continued)
Column 1 Column 2 Column 3 Column 4 Column 5 Column 6
Significant Preventative measures
Hazardous situation Risk/Mode of operation Particular preventative measures Verification
Hazard according to EN ISO 12100
Explosive mixture of dust Fire extinguishing If aerating installations are used, it shall be 6.2.1/6.5
or vapours possible to operate them with inert gas.
Aeration installations shall only be effective 6.2.1
Removing of material
during the dust removal and shall avoid the
bridging within the silos,
entry of air into the silos at other times.
e.g. after fire extinguishing
It shall
...