kSIST FprEN 13379:2018

SLOVENSKI STANDARD
oSIST prEN 13379:2016
01-julij-2016
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Pasta processing plant - Spreader, stripping and cutting machine, stick return conveyor -
Safety and hygiene requirements
Maschinen zur Teigwarenherstellung - Behänger, Abstreif- und Schneidmaschinen,
Stabrücktransporte, Stabmagazine - Sicherheits- und Hygieneanforderungen
Ta slovenski standard je istoveten z: prEN 13379
ICS:
67.260 Tovarne in oprema za Plants and equipment for the
živilsko industrijo food industry
oSIST prEN 13379:2016 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN 13379:2016
oSIST prEN 13379:2016
DRAFT
EUROPEAN STANDARD
prEN 13379
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2016
ICS 67.260 Will supersede EN 13379:2001+A1:2013
English Version
Pasta processing plant - Spreader, stripping and cutting
machine, stick return conveyor - Safety and hygiene
requirements
Maschinen zur Teigwarenherstellung - Behänger,
Abstreif- und Schneidmaschinen, Stabrücktransporte,
Stabmagazine - Sicherheits- und
Hygieneanforderungen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 153.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 13379:2016 E
worldwide for CEN national Members.

oSIST prEN 13379:2016
prEN 13379:2016 (E)
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 8
4 Descriptions . 9
4.1 Spreader . 9
4.2 Stripping and cutting machine . 10
4.3 Stick return conveyor . 11
5 List of hazards . 12
5.1 General . 12
5.2 Mechanical hazards . 12
5.2.1 General . 12
5.2.2 Mechanical hazards at the spreader . 12
5.2.3 Mechanical hazards on the stripping and cutting machine . 13
5.2.4 Mechanical hazards at the stick return conveyor . 13
5.2.5 Fluid ejection hazards . 14
5.2.6 Hazards due to unexpected start-up . 14
5.3 Electrical hazards . 14
5.4 Thermal hazards . 14
5.5 Noise hazards. 14
5.6 Hazards due to slip, trip and fall . 14
5.7 Hazards due to neglecting of hygienic principles . 15
5.8 Hazards generated by neglecting ergonomic principles . 15
6 Safety requirements and/or protective measures . 15
6.1 General . 15
6.2 Mechanical hazards . 15
6.2.1 General . 15
6.2.2 Spreader . 15
6.2.3 Stripping and cutting machine . 16
6.2.4 Stick return conveyor . 16
6.2.5 Fluid ejection . 16
6.2.6 Unexpected start-up . 17
6.3 Electrical hazards . 18
6.3.1 General . 18
6.3.2 Protection against shock . 18
6.3.3 Degrees of protection . 19
6.3.4 Cable selection and colours . 19
6.3.5 Safety requirements related to electromagnetic phenomena . 19
6.4 Thermal hazards . 19
6.5 Noise reduction . 19
6.6 Protective measures against slip, trip and fall . 20
6.7 Protective measures against hazards due to neglecting of hygienic principles . 20
6.7.1 General . 20
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6.7.2 Food area . 20
6.7.3 Splash area . 20
6.7.4 Non-food area . 20
6.8 Ergonomic design principles . 23
7 Verification of safety requirements and/or measures . 23
8 Information for use . 25
8.1 Technical information . 25
8.2 Indicators. 26
8.2.1 General . 26
8.2.2 Warning signs for residual hazards . 26
8.3 Marking . 26
Annex A (normative) Principles of design to ensure the cleanability of machinery . 28
A.1 Terms and definitions . 28
A.2 Materials of construction . 28
A.2.1 Type of materials . 28
A.2.2 Surface conditions . 28
A.3 Design . 29
A.3.1 Connections of internal surfaces . 29
A.3.2 Surface assemblies and overlaps . 33
A.3.3 Fasteners. 37
A.3.4 Machines on the floor . 39
A.3.5 Ventilation openings . 40
A.3.6 Hinges . 41
A.3.7 Control panel . 42
Annex B (normative) Noise test code – Grade 2 or 3 . 43
B.1 Terms and definitions . 43
B.2 Installation and mounting conditions . 43
B.3 Operating conditions . 43
B.4 Measurements . 43
B.5 Emission sound pressure level determination . 43
B.6 Sound power level determination . 44
B.7 Measurement uncertainties . 44
B.8 Information to be recorded . 45
B.9 Information to be reported . 45
B.10 Declaration and verification of noise emission value . 45
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2006/42/EC aimed to be covered . 46
Bibliography . 47

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prEN 13379:2016 (E)
European foreword
This document (prEN 13379:2016) has been prepared by Technical Committee CEN/TC 153
“Machinery intended for use with foodstuffs and feed”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 13379:2001+A1:2013.
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 2006/42/EC.
For relationship with EU Directive 2006/42/EC, see informative Annex ZA, which is an integral part of
this document.
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prEN 13379:2016 (E)
Introduction
This draft 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 hazardous events
are covered are indicated in the scope of this document.
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.
Complementary to the hygiene requirements common to all food processing machines, specific
requirements for cleanability and sanitation of the machines in the scope are formulated.
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1 Scope
This draft European Standard applies to spreader, stripping and cutting machine, as well as the stick
return conveyor (see Clause 4), used for pasta production.
This draft European standard specifies the safety requirements for the design, manufacture and
information for safe use of spreader, stripping and cutting machines, as well as the stick return
conveyor, classified as stationary units which cannot be moved when in operation.
It deals with all significant hazards, hazardous situations, and events when the machines falling within
the scope of this standard are used as intended and under conditions of misuse which are reasonably
foreseeable by the manufacturer (see Clause 5).
It deals with the hazards during the following phases of the machines' lifetime: transport, assembly and
installation, commissioning, setting and adjusting, operation, cleaning, fault finding, maintenance,
decommissioning, dismantling, disabling and scrapping.
The measures for risk reduction are given in Clause 6.
This draft European Standard does not apply to:
— household machines,
— batch machines.
The significant hazards covered by this standard are listed in Clause 5.
These hazards and the measures for their reduction are described in this draft European Standard.
Ancillary equipment which is not an integral part of the machinery (e.g. hoppers) is not covered by this
draft European Standard.
This draft European Standard is not applicable to machines in its scope which are manufactured before
the date of its publication as EN.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
EN 614-1, Safety of machinery — Ergonomic design principles — Part 1: Terminology and general
principles
EN 1037:1995+A1:2008, Safety of machinery — Prevention of unexpected start-up
EN 1672-2:2005+A1:2009, Food processing machinery — Basic concepts — Part 2: Hygiene requirements
EN 60204-1:2006, Safety of machinery — Electrical equipment of machines — Part 1: General
requirements (IEC 60204-1:2005, modified)
1)
EN 60529:1991+A2:2013 , Degrees of protection provided by enclosures (IP code) (IEC 60529:1989)
EN 60947-5-5, Low-voltage switchgear and controlgear — Part 5-5: Control circuit devices and switching
elements — Electrical emergency stop device with mechanical latching function (IEC 60947-5-5)

1) This document is impacted by the amendments EN 60529:1991/A1:2000 and EN 60529:1991/A2:2013.
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EN 61310-1, Safety of machinery — Indication, marking and actuation — Part 1: Requirements for visual,
acoustic and tactile signals (IEC 61310 1)
EN 61496-1, Safety of machinery — Electro-sensitive protective equipment — Part 1: General
requirements and tests (IEC 61496-1)
EN ISO 3744, Acoustics — Determination of sound power levels and sound energy levels of noise sources
using sound pressure — Engineering methods for an essentially free field over a reflecting plane
(ISO 3744)
EN ISO 3746, Acoustics — Determination of sound power levels and sound energy levels of noise sources
using sound pressure — Survey method using an enveloping measurement surface over a reflecting plane
(ISO 3746)
EN ISO 3747, Acoustics — Determination of sound power levels and sound energy levels of noise sources
using sound pressure — Engineering/survey methods for use in situ in a reverberant environment
(ISO 3747)
EN ISO 4287, Geometrical product specifications (GPS) — Surface texture: Profile method — Terms,
definitions and surface texture parameters (ISO 4287)
EN ISO 4413, Hydraulic fluid power — General rules and safety requirements for systems and their
components (ISO 4413)
EN ISO 4414:2010, Pneumatic fluid power — General rules and safety requirements for systems and their
components (ISO 4414:2010)
EN ISO 4871, Acoustics — Declaration and verification of noise emission values of machinery and
equipment (ISO 4871)
EN ISO 7731, Ergonomics - Danger signals for public and work areas — Auditory danger signals
(ISO 7731)
EN ISO 9614-1, Acoustics — Determination of sound power levels of noise sources using sound intensity —
Part 1: Measurement at discrete points (ISO 9614-1)
EN ISO 9614-2, Acoustics — Determination of sound power levels of noise sources using sound intensity —
Part 2: Measurement by scanning (ISO 9614-2)
EN ISO 11201, Acoustics — Noise emitted by machinery and equipment — Determination of emission
sound pressure levels at a work station and at other specified positions in an essentially free field over a
reflecting plane with negligible environmental corrections (ISO 11201)
EN ISO 11202, Acoustics — Noise emitted by machinery and equipment — Determination of emission
sound pressure levels at a work station and at other specified positions applying approximate
environmental corrections (ISO 11202)
EN ISO 11204, Acoustics — Noise emitted by machinery and equipment — Determination of emission
sound pressure levels at a work station and at other specified positions applying accurate environmental
corrections (ISO 11204)
EN ISO 11688-1, Acoustics — Recommended practice for the design of low-noise machinery and
equipment — Part 1: Planning (ISO/TR 11688-1)
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EN ISO 12100:2010, Safety of machinery — General principles for design — Risk assessment and risk
reduction (ISO 12100:2010)
EN ISO 13732-1, Ergonomics of the thermal environment — Methods for the assessment of human
responses to contact with surfaces — Part 1: Hot surfaces (ISO 13732-1)
EN ISO 13849-1, Safety of machinery — Safety-related parts of control systems — Part 1: General
principles for design (ISO 13849-1)
EN ISO 13850, Safety of machinery — Emergency stop function — Principles for design (ISO 13850)
EN ISO 13857:2008, Safety of machinery — Safety distances to prevent hazard zones being reached by
upper and lower limbs (ISO 13857:2008)
EN ISO 14119, Safety of machinery — Interlocking devices associated with guards — Principles for design
and selection (ISO 14119)
EN ISO 14120, Safety of machinery — Guards — General requirements for the design and construction of
fixed and movable guards (ISO 14120)
EN ISO 14122 (all parts), Safety of machinery — Permanent means of access to machinery (ISO 14122, all
parts)
ISO 3864-1, Graphical symbols —Safety colours and safety signs — Part 1: Design principles for safety
signs and safety markings
ISO 3864-2, Graphical symbols — Safety colours and safety signs — Part 2: Design principles for product
safety labels
ISO 3864-3, Graphical symbols — Safety colours and safety signs — Part 3: Design principles for graphical
symbols for use in safety signs
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 12100:2010 and the
following apply.
3.1
spreader
machine collecting product from the press and spreading it on the sticks before the stick enters the
dryer
3.2
stripping and cutting machine
machine collecting dried pasta sticks, releasing pasta from the sticks and cutting pasta to packaging
length
3.3
stick return conveyor
machine collecting empty sticks from the stripping saw and conveying them to the spreader
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3.4
continuous working machine
machine with non-stop product cycle, where the pre-formed pasta is fed automatically into the machine
and the end product is extracted continuously
4 Descriptions
4.1 Spreader
The spreader (see Figure 1) is placed between the extruder and the dryer. The dough strings,
continually discharged from the extruder, are cut off to a certain length, then placed on the sticks and
cut to the required length on the lower end. Subsequently, the covered sticks are transferred to the
dryer. The empty sticks are taken over from the stick return conveyor and can be heated or treated with
edible oil before they are covered with product.
The cut product remnants are usually transported away from the spreader by means of conveyor belts
and are fed to the extruder by means of a pneumatic conveying line. In order to prevent the still wet
product on the sticks sticking together, it is necessary to have venting devices at several spots.
The spreader can also be equipped with a device for introducing or removing the sticks.
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Key
1 to 10 hazard zones
Figure 1— Hazard zones at the spreader
4.2 Stripping and cutting machine
The stripping and cutting machine (see Figure 2) is positioned after the cooler or after the stick stacker.
The sticks with the dried product are taken over, the product is stripped off the sticks and is cut to the
desired length. The cut product is discharged via oscillating conveyors or conveyor belts and is
transferred to the packaging unit or to a stacker. The cut-off material is in most cases transported away
by means of a pneumatic conveying line. The empty sticks are transferred to the stick return conveyor.
Normally, the stripping and cutting machine comprises also a stick removal device, which takes off the
empty sticks to allow for their cleaning or repair.
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Key
1 to 8 hazard zones
Figure 2 — Hazard zones at the stripping and cutting machine
4.3 Stick return conveyor
The stick return conveyor (see Figure 3) brings the empty sticks from the stripping and cutting machine
back to the spreader. This device is usually positioned underneath the dryers.
In certain cases one of the functions of this return conveyor is the formation of a stick magazine with
the sticks being transported possibly in several tiers.
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prEN 13379:2016 (E)
Key
1, 2 hazard zones
Figure 3 — Hazard zones at the return conveyor
5 List of hazards
5.1 General
This clause covers all hazards as far as they are considered in this draft European Standard and
identified by risk assessment, significant for this type of machinery and requiring an action to eliminate
or reduce risk.
5.2 Mechanical hazards
5.2.1 General
The significant mechanical hazards are:
— crushing hazard;
— cutting or severance hazard;
— drawing in hazard;
— entanglement hazard;
— shearing hazard;
— impact hazard;
— injection hazard (fluid ejection);
— slipping, tripping and falling hazard.
The examples shown in Figures 1, 2 and 3 illustrate the danger zones associated with these hazards.
5.2.2 Mechanical hazards at the spreader
Automatic lifting of the inlet hood at the start of production creates a danger zone at this location. When
the inlet hood is lifted, hands or fingers of operators can get squeezed between the die and the inlet
hood; when the hood is lowered, the danger area is underneath the inlet hood (zone 1).
The upper cutter for cutting the extruded product represents one particularly hazardous zone. For
starting production, the inlet hood is pushed out of the way or is removed and the product extrudes
until the discharge is uniform. In this situation, the cutting device may become accessible, which means
that fingers and hands of operators are exposed to risk of injury (zone 2).
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The lower cutter, which cuts the product on the sticks to equal length, also represents an area which is
particularly hazardous. For maintenance and cleaning, there is free access to the cutter, because the
guards have been opened, and there is danger of severe cuts of the fingers and hands (zone 3).
The empty sticks being moved on the front of the machine for spreading with product also represents
an area which is particularly hazardous. There is a risk of injury (pinching) (zone 4).
The conveying belts with the danger of body parts being drawn in are further hazard zones (zone 5).
The fans for venting the product can cause injuries, such as finger amputation (zone 6).
The shredder fan used for transporting the cut-off material back to the extruder can amputate fingers or
hands during cleaning. In addition to this, the rotor has accumulated kinetic energy, which can also lead
to injuries for a certain time after the machine was shut down (zone 7).
The chain transmissions for moving the stick can also cause injuries by pinching and drawing-in
(zone 8).
5.2.3 Mechanical hazards on the stripping and cutting machine
The cutting device which usually comprises rotating cutter blades is especially dangerous. There is a
risk of severe laceration.
The energy accumulated in the cutters represents another danger as the cutters will continue to turn
for a certain time after the machine has been shut down; injuries might result. Another hazard is parts
coming loose from the cutter blade, such as hard metal teeth, which are thrown off and may cause
injuries (zone 1).
The stripping and depositing devices represent additional hazard zones. Here, especially the clamping
zones may cause danger of pinching (zone 2).
The conveying elements for the stripped-off and cut or uncut product, such as chains, belts or oscillating
conveyors, can cause injuries by pinching and drawing-in (zone 3).
The chain transmission and the disk cams of the stick drives as well as of the stripping device can cause
injuries (pinching) (zone 4).
The fan for transporting the remaining product back to the milling device may cause injuries to the
fingers or hands during cleaning. In addition to this, the rotor has accumulated kinetic energy which can
also lead to injuries for a certain time beyond the point where the machine was shut down (zone 5).
The side of the cutting machine where the sticks are introduced is normally attached to adjacent
machines, for instance to the stick stacker. Uncovered openings and channels may offer free access to
the moving parts, and thus these may cause injuries by drawing-in and pinching (zone 6).
At the stick removal device there is a risk of getting injured at the clamping and drawing-in zones
(zone 7).
5.2.4 Mechanical hazards at the stick return conveyor
In the stick transfer area and along the conveying elements there is a risk of pinching at the clamping
points that may cause injuries (zone 1).
Driving elements such as chain transmissions, rotating shafts, and stick transfer points may cause
injuries due to drawing-in and pinching (zone 2).
Removal or feeding of sticks to the stick return conveyor may give access to the clamping points with
the risk of pinching at the clamping points.
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5.2.5 Fluid ejection hazards
Leakage of pressurized pipes including the heat exchangers may cause the hazard of fluid release, e.g.
water, steam and compressed air, which may cause a burn hazard or impact hazard when whipped from
flexible pipes or receiving a hit of the fluid.
Pressure drop in pneumatic drives caused by leakage may result in dangerous unexpected movements,
e.g. when a movable part of the machine is held in the upper position by pressure.
Fluid release may cause a slipping hazard.
5.2.6 Hazards due to unexpected start-up
Unexpected start-up may cause unexpected contact with dangerous moving parts that may result in all
significant hazards listed in 5.2.1.
5.3 Electrical hazards
Electrical equipment on the machine can generate a potential electric shock hazard from direct or
indirect contact with live components. This hazard is present in control panels, junction boxes, motor
connectors, electrical resistances and in the electrical components. An external disturbance such as
electromagnetic interference can lead to malfunction or loss of function of electrical equipment. If
liquids, e.g. fluids used for pasta processing or cleaning agents like water, come into contact with the
electrical conductors, there is a risk of electric shock.
5.4 Thermal hazards
Risks of burns exist by touching pipes when machines operate with hot fluids for sticks heating or
ventilation conditioning (zone 9, Figure 1). Electrical motors and gearboxes can reach dangerous
temperatures on their external surface. The burning hazard will usually continue to exist for a period of
time after power has been disconnected.
5.5 Noise hazards
Noise generated by these machines can lead to:
— permanent loss of hearing;
— ringing in the ears;
— fatigue, stress;
— interference with speech communication, acoustic signals.
5.6 Hazards due to slip, trip and fall
Walkways, stairs and gangways (zone 8, Figure 2) may cause hazards like slip, trip and fall.
Slip accidents can occur if liquids or solids from the machine, e.g. lubricants or the product, spill onto
traffic routes, work stations or means of access around the machine.
Trip accidents may occur if parts of the machine protrude beyond the machine frame at low level, or if
cables and pipes associated with the machine are incorrectly installed.
Falls can occur if people working on the platform have to access parts in high location compared to the
platform level.
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5.7 Hazards due to neglecting of hygienic principles
Neglecting of hygienic principles may cause a hazard to human health and unacceptable modification of
foodstuff (e.g. contamination by microbial growth or foreign materials and pests).
5.8 Hazards generated by neglecting ergonomic principles
During operation, production changing, cleaning and maintenance, there is a hazard to safety and health
resulting from awkward body postures or the use of excessive effort.
A hazard of injury to the body can occur, for example, during handling materials for exchanging
machine parts during maintenance or during production changes.
6 Safety requirements and/or protective measures
6.1 General
Machinery shall comply with the safety requirements and/or protective measures of this clause. In
addition, the machine shall be designed according to the principles of EN ISO 12100:2010 for relevant
but not significant hazards, which are not dealt with by this document.
6.2 Mechanical hazards
6.2.1 General
Where reference is made to fixed guards throughout Clause 6, they shall comply with EN ISO 14120.
Fixing systems for fixed guards shall remain attached to these parts or to the machine when the guard is
removed. Openings in fixed guards shall comply with EN ISO 13857:2008, Table 4.
Where reference is made to interlocking devices throughout Clause 6, they shall comply with
EN ISO 14119.
6.2.2 Spreader
The movement of the inlet hood shall be protected by a hold-to-run control device. Another possibility
of safeguarding is the installation of an optoelectronic protective device.
Access to the upper cutter shall be prevented by means of fixed guards or movable interlocked guards
in such a way that access to the cutting tools is not possible while they are in motion.
The upper cutter shall not start while the inlet hood is not in production position.
The lower cutter shall not be accessible during operation. Access to the area can either be prevented by
means of fixed guards or movable interlocked guards. Another possibility of safeguarding is the
installation of an optoelectronic protective device.
The lateral conveyor chains and sprockets shall be protected by means of fixed guards or movable
interlocked guards.
Access to the movable elements, such as chain or belt transmissions, oscillating or rotating parts of
drives shall be prevented by means of fixed guards or movable interlocked guards.
No guards are needed if safety distances are in accordance with EN ISO 13857:2008, Table 2.
Access to fans shall be protected by fixed guards in accordance with EN ISO 13857:2008, Table 4.
During maintenance, access to the shredder fan shall be protected by fixed guards. Movable interlocked
guards with guard locking may also be used. However, in this case, it shall be guaranteed that the rotor
of the fan is at standstill before access is possible.
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Access to the chain transmissions for moving sticks shall be prevented by means of fixed guards or
movable interlocked guards.
6.2.3 Stripping and cutting machine
Access to the rotating cutter blades shall be prevented by means of fixed guards or movable interlocked
guards with guard locking.
Openings for product outlet which may give access to the rotating cutter blades shall be positioned in
accordance with EN ISO 13857:2008, Table 2.
Protection against particles ejected from the cutter blades shall be made by means of a guard.
Access to the stripping and depositing devices shall be prevented by means of fixed guard or movable
interlocked guards.
Access to the conveying elements for the stripped and cut or uncut product shall be prevented by means
of fixed or movable interlocked guards.
Access to the various drive devices shall be protected by fixed guards. Movable interlocked guards with
guard locking may also be used. However, in this case, it shall be guaranteed that the rotor is at
standstill before access is possible.
During maintenance access to the milling tools shall be protected by fixed guards. Movable interlocked
guards may also be used. However, in this case, it shall be guaranteed that the rotor of the mill is at
standstill before access is possible.
In case the inlet for the stick is not covered by the adjacent machine, the inlet shall be protected by
means of fixed guards or by movable interlocked guards.
Access to the stick removal and feeding device shall be prevented by means of fixed guards or movable
interlocked guards. Openings for sticks holders which may give access to the danger zone shall be
positioned in accordance with EN ISO 13857:2008.
6.2.4 Stick return conveyor
Access to the movable parts of the conveying element shall be prevented by means of a fixed guard.
Access to the drive of the stick return conveyor shall be prevented by means of fixed guards or movable
interlocked guards.
Access to the stick removal and feeding device shall be prevented by means of fixed guards or movable
interlocked guards. Openings for stick holders which may give access to the danger zone shall be
positioned in accordance with EN ISO 13857:2008.
6.2.5 Fluid ejection
Water, superheated water, steam and diathermic oil piping systems together with their intercepting
and controlling devices shall be designed for a pressure 1,5 times the maximum working pressure.
Pneumatic systems shall be designed and manufactured according to EN ISO 4414.
Where pressure drop in pneumatic drives caused by leakage of the pipes or malfunction of the
compressor may result in dangerous unexpected movements. .
Quick-connection couplings for frequent use shall be arranged outside the traffic route for the operators
to prevent the traffic route getting slippery. Where this is not possible provisions shall be taken, e.g. by
using sufficiently dimensioned grids.
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6.2.6 Unexpected start-up
6.2.6.1 General
To avoid hazards due to unexpected start-up, the machines shall be provided with devices intended for
isolation and energy dissipation, especially with a view to major maintenance, work on power circuits
and handling mobile parts (see EN 1037:1995+A1:2008, Clause 4). For electrical equipment
see EN 60204-1:2006, Clause 9. For pneumatic equipment see EN ISO 4414:2010, 5.4.6.
If the use of isolation and energy dissipation is not appropriate (e.g. handling of mobile parts during
product change) the manufacturer shall provide, according to the risk assessment, other measures to
prevent unexpected start-up.
6.2.6.2 Supply disconnecting device
Each machine shall be equipped with power supply disconnecting devices for all energy supplies
according to EN 1037:1995+A1:2008, 5.1, capable of being locked or otherwise secured in the OFF-
position. Location and mounting of the device shall be in accordance with EN 60204-1:2006, 10.1.2.
In addition, for pneumatic equipment a device for stored energy dissipation or restraint shall be
incorporated into the machine where stored energy can give rise to a hazard due to unexpected start-
up. For pneumatic equipment see EN ISO 4414:2010, 5.4.6.1. In particular, for electric power,
disconnecting devices shall be according to EN 60204-1:2006, 5.3.2, types a, b or c.
6.2.6.3 Emergency stop device
Each machine shall be equipped with emergency stop devices positioned on the control panels and at
the interface with other machines when the interface can create dangerous situations (e.g. press). The
emergency stop function shall be a stop of category 0 or 1 according to EN 60204-1:2006, 9.2.2, and
comply with EN 60204-1:2006, 9.2.5.4.1 and 9.2.5.4.2. The emergency stop shall also comply with
EN ISO 13850. Electrical switchgear and control gear shall comply with EN 60947-5-5.
6.2.6.4 Control circuits and control functions of normal stop device
For pasta equipment, the normal stop shall follow a procedure to stop each machine according to the
technological process inside (the procedure follows the product passage through the equipment). The
aim is to stop each machine when it is empty. If the machine is equipped with a normal stop device
every machine shall be equipped with devices for normal stop that shall be of category 0 or 1, as defined
in EN 60204-1:2006, 9.2.5.3. The stop control of the machinery shall have priority over the start
controls. Once the machinery or its hazardous functions have stopped, the energy supply to the
actuators concerned shall be cut off. For pasta equipment under PLC control, category 0 or 1 are not
required, but the normal stop condition shall be monitored and maintained.
6.2.6.5 Safety-related parts of control systems
The safety-related parts of control systems shall present at least a performance level “c”, defined in
accordance with EN ISO 13849-1.
The safety-related parts of control systems shall be protected with a performance level “d”, defined in
accordance with EN ISO 13849-1, for upper cutter in the spreader, milling tools and cuttin
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