SIST EN 12012-4:2019+A1:2021

SLOVENSKI STANDARD
SIST EN 12012-4:2019+A1:2021
01-december-2021
Stroji za predelavo gume in plastike - Drobilni stroji - 4. del: Varnostne zahteve za
aglomeratorje
Plastics and rubber machines - Size reduction machines - Part 4: Safety requirements
for agglomerators
Kunststoff- und Gummimaschinen - Zerkleinerungsmaschinen - Teil 4:
Sicherheitsanforderungen für Agglomeratoren
Machines pour les matières plastiques et le caoutchouc - Machines à fragmenter - Partie
4 : Prescriptions de sécurité relatives aux agglomérateurs
Ta slovenski standard je istoveten z: EN 12012-4:2019+A1:2021
ICS:
83.200 Oprema za gumarsko Equipment for the rubber and
industrijo in industrijo plastics industries
polimernih materialov
SIST EN 12012-4:2019+A1:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 12012-4:2019+A1:2021

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SIST EN 12012-4:2019+A1:2021


EN 12012-4:2019+A1
EUROPEAN STANDARD

NORME EUROPÉENNE

October 2021
EUROPÄISCHE NORM
ICS 83.200 Supersedes EN 12012-4:2019
English Version

Plastics and rubber machines - Size reduction machines -
Part 4: Safety requirements for agglomerators
Machines pour les matières plastiques et le caoutchouc Kunststoff- und Gummimaschinen -
- Machines à fragmenter - Partie 4 : Prescriptions de Zerkleinerungsmaschinen - Teil 4:
sécurité relatives aux agglomérateurs Sicherheitsanforderungen für Agglomeratoren
This European Standard was approved by CEN on 29 April 2019 and includes Amendment 1 approved by CEN on 3 August 2021.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12012-4:2019+A1:2021 E
worldwide for CEN national Members.

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SIST EN 12012-4:2019+A1:2021
EN 12012-4:2019+A1:2021 (E)
Contents Page
European foreword . 4
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 9
4 Safety requirements and/or protective/risk reduction measures . 9
4.1 General . 9
4.2 Mechanical hazards . 10
4.2.1 Access through openings in the agglomerator chamber . 10
4.2.2 Feed material that is not pre-cut . 11
4.2.3 Moving parts of discharge systems . 11
4.3 Thermal hazards . 11
4.4 Noise hazards. 12
4.4.1 Noise reduction at source by design . 12
4.4.2 Noise reduction by protective measures . 12
4.4.3 Information connected with noise hazards . 12
4.5 Hazards generated by dust, fumes and gases . 12
4.6 Hazards due to electrical energy . 12
4.6.1 Electrical equipment . 12
4.6.2 Accumulation of electrostatic charges . 13
4.7 Control circuit. 13
4.7.1 Emergency stop . 13
4.7.2 Stop function . 13
4.7.3 Start function . 13
4.8 Unexpected start-up . 14
4.9 Falls from height . 14
5 Verification of conformity with the safety requirements and/or protective/risk
reduction measures . 14
6 Information for use . 15
6.1 General . 15
6.2 Instruction handbook . 15
6.3 Marking and safety signs . 16
6.3.1 Marking . 16
6.3.2 Warning signs . 16
Annex A (informative) List of significant hazards . 17
Annex B (normative) Noise test code . 19
B.1 Scope . 19
B.2 Determination of sound power levels . 19
B.2.1 Basic standards . 19
B.2.2 Measurement uncertainty . 19
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B.3 Determination of emission sound pressure level at the workstation(s) . 20
B.3.1 Basic standards . 20
B.3.2 Measurement uncertainty . 20
B.4 Installation and mounting conditions for the noise measurement . 20
B.5 Operating conditions . 21
B.6 Information to be recorded and reported . 21
B.6.1 General . 21
B.6.2 General agglomerator data . 21
B.6.3 Agglomerator data . 21
B.6.4 Standards . 22
B.6.5 Noise data . 22
B.6.6 Specified test parameters . 22
B.6.7 Installation and operating conditions . 22
B.7 Declaration and verification of noise emission values . 22
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2006/42/EC aimed to be covered . 25
Bibliography . 27

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SIST EN 12012-4:2019+A1:2021
EN 12012-4:2019+A1:2021 (E)
European foreword
This document (EN 12012-4:2019+A1:2021) has been prepared by Technical Committee CEN/TC 145
“Plastics and rubber machines”, the secretariat of which is held by UNI.
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 April 2022, and conflicting national standards shall be
withdrawn at the latest by April 2022.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes !EN 12012-4:2019".
The start and finish of text introduced or altered by amendment is indicated in the text by tags !".
This document has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association, and supports essential requirements of EU
Directive(s) / Regulation(s).
For relationship with EU Directive(s) / Regulation(s), see informative Annex ZA, which is an integral part
of this document.
The main changes compared to the EN 12012-4:2006+A1:2008 are:
— the revision of type-A and type-B standards have been considered;
— the list of significant hazards has been moved to an informative annex;
— the performance levels/safety integrity levels of safety related parts of control systems have been
specified in accordance with EN ISO 13849-1:2015 / EN 62061:2005, EN 62061:2005/A1:2013,
EN 62061:2005/A2:2015;
— the hazards related to the ejection of parts or materials from the agglomerator chamber have been
removed because reliable and well-designed chambers represent now the state of the art (no
projections and no broken chamber have been reported for a long time);
— feed openings of big dimensions are considered;
— requirements for moving parts of discharge systems are added;
!— the agglomerators with actuators moved by pneumatic and/or hydraulic energy have been
excluded from the Scope;"
— the annex for noise measurement has been revised.
!In comparison with the original version EN 12012-4:2019, the following technical and editorial
modifications have been made by amendment EN 12012-4:2019/A1:2021:
— European Foreword: dash added;
— Scope: editorial modification and dash added;
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— Normative references: a reference date updated;
— 4.2.1: updated normative references;
— 4.2.3: updated normative reference;
— 4.6.1.3: modified text;
— 4.6.1.4: modified text;
— 4.7.2: modified text;
— 4.7.3: updated normative reference;
— 6.2.1: modified text;
— 6.3.2: modified text;
— Table Annex ZA: modified text."
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United
Kingdom.

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SIST EN 12012-4:2019+A1:2021
EN 12012-4:2019+A1:2021 (E)
Introduction
This document is a type-C standard as stated in EN ISO 12100:2010.
This document is of relevance, in particular, for the following stakeholder groups representing the market
players with regard to machinery safety:
— machine manufacturers (small, medium and large enterprises);
— health and safety bodies (regulators, accident prevention organizations, market surveillance, etc.).
Others can be affected by the level of machinery safety achieved with the means of the document by the
above-mentioned stakeholder groups:
— machine users/employers (small, medium and large enterprises);
— machine users/employees (e.g. trade unions, organizations for people with special needs);
— service providers, e.g. for maintenance (small, medium and large enterprises);
— consumers (in case of machinery intended for use by consumers).
The above-mentioned stakeholder groups have been given the possibility to participate at the drafting
process of this document.
The machinery concerned and the extent to which hazards, hazardous situations or hazardous events are
covered are indicated in the Scope of this document.
When requirements of this type-C standard are different from those which are stated in type-A or type-B
standards, the requirements of this type-C standard take precedence over the requirements of the other
standards for machines that have been designed and built according to the requirements of this type-C
standard.

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1 Scope
!This document deals with all significant hazards, hazardous situations and events relevant to
agglomerators for the modification of plastic scraps in its form, size and flow characteristics, when they
are used as intended and under conditions of misuse which are reasonably foreseeable by the
manufacturer (see Annex A). The hazards have been identified taking into account all phases of the
machine life cycle according to EN ISO 12100:2010, 5.4.
Machines considered in this document begin at the outer edge of the feed opening and end at the outer
edge of the discharge opening.
This document does not deal with:
— hazards due to emissions by processing materials that could be hazardous to health;
— hazards caused by ignition of flammable residues in material to be processed;
— requirements for exhaust ventilation systems;
 agglomerators moved by pneumatic and/or hydraulic energy.
This document is not applicable to agglomerators manufactured before the date of its publication."
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
EN ISO 14118:2018, Safety of machinery — Prevention of unexpected start-up (ISO 14118:2017)
EN 60204-1:2018, Safety of machinery — Electrical equipment of machines — Part 1: General requirements
(IEC 60204-1:2016, modified)
EN 62061:2005, Safety of machinery — Functional safety of safety-related electrical, electronic and
programmable electronic control systems (IEC 62061:2005)
EN 62061:2005/A1:2013, Safety of machinery — Functional safety of safety-related electrical, electronic
and programmable electronic control systems (IEC 62061:2005/AMD1:2012)
EN 62061:2005/A2:2015, Safety of machinery — Functional safety of safety-related electrical, electronic
and programmable electronic control systems (IEC 62061:2005/AMD2:2015)
EN ISO 3744:2010, 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 3744:2010)
EN ISO 3746:2010, 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 3746:2010)
EN ISO 4871:2009, Acoustics — Declaration and verification of noise emission values of machinery and
equipment (ISO 4871:1996)
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EN ISO 9614-2:1996, Acoustics — Determination of sound power levels of noise sources using sound
intensity — Part 2: Measurement by scanning (ISO 9614-2:1996)
EN ISO 11201:2010, 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 11201:2010)
EN ISO 11202:2010, 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 11202:2010)
EN ISO 11204:2010, 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 11204:2010)
EN ISO 11688-1:2009, Acoustics — Recommended practice for the design of low-noise machinery and
equipment — Part 1: Planning (ISO/TR 11688-1:1995)
EN ISO 12100:2010, Safety of machinery — General principles for design — Risk assessment and risk
reduction (ISO 12100:2010)
EN ISO 13732-1:2008, Ergonomics of the thermal environment — Methods for the assessment of human
responses to contact with surfaces — Part 1: Hot surfaces (ISO 13732-1:2006)
EN ISO 13849-1:2015, Safety of machinery — Safety-related parts of control systems — Part 1: General
principles for design (ISO 13849-1:2015)
EN ISO 13850:2015, Safety of machinery — Emergency stop function — Principles for design
(ISO 13850:2015)
EN ISO 13855:2010, Safety of machinery — Positioning of safeguards with respect to the approach speeds
of parts of the human body (ISO 13855:2010)
EN ISO 13856-2:2013, Safety of machinery — Pressure-sensitive protective devices — Part 2: General
principles for design and testing of pressure-sensitive edges and pressure-sensitive bars (ISO 13856-2:2013)
EN ISO 13856-3:2013, Safety of machinery — Pressure-sensitive protective devices — Part 3: General
principles for design and testing of pressure-sensitive bumpers, plates, wires and similar devices
(ISO 13856-3:2013)
!EN ISO 13857:2019, Safety of machinery — Safety distances to prevent hazard zones being reached by
upper and lower limbs (ISO 13857:2019)"
EN ISO 14119:2013, Safety of machinery — Interlocking devices associated with guards — Principles for
design and selection (ISO 14119:2013)
EN ISO 14120:2015, Safety of machinery — Guards — General requirements for the design and construction
of fixed and movable guards (ISO 14120:2015)
EN ISO 14122-1:2016, Safety of machinery — Permanent means of access to machinery — Part 1: Choice
of fixed means and general requirements of access (ISO 14122-1:2016)
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EN ISO 14122-2:2016, Safety of machinery — Permanent means of access to machinery — Part 2: Working
platforms and walkways (ISO 14122-2:2016)
EN ISO 14122-3:2016, Safety of machinery — Permanent means of access to machinery — Part 3: Stairs,
stepladders and guard-rails (ISO 14122-3:2016)
EN ISO 14122-4:2016, Safety of machinery — Permanent means of access to machinery — Part 4: Fixed
ladders (ISO 14122-4:2016)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 12100:2010 and the
following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
agglomerator
machine (sometimes called densifier) for modifying the form, size and flow characteristics of
thermoplastic scrap in a chamber
Note 1 to entry: The material is cut, kneaded, mixed, or heated by friction to increase the flow of the material.
3.2
agglomerating tool
tool, secured on a rotating structure (e.g. disc) which can be combined with a stationary counter tool, to
modify the material being processed in form, size and flow characteristics
3.3
feeding equipment
hopper, that is an integral part of the machine, used to feed the material to be processed
3.4
discharge system
equipment that is an integral part of the machine such as power rotating screw etc. used to discharge the
material from the agglomerator
4 Safety requirements and/or protective/risk reduction measures
4.1 General
Machinery shall comply with the safety requirements and/or protective/risk reduction 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 that are not dealt with by this document.
The safety related parts of the control system shall be in accordance with EN ISO 13849-1:2015 or
EN 62061:2005, EN 62061:2005/A1:2013, EN 62061:2005/A2:2015. The required performance levels
(PL ) or Safety Integrity Levels (SIL) are given in the relevant subclauses.
r
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4.2 Mechanical hazards
4.2.1 Access through openings in the agglomerator chamber
In the agglomerator there are openings designed and constructed for feeding the material, discharging
the material, inspecting the process inside the agglomerator chamber and changing or maintaining the
agglomerating tools.
Access to agglomerating tools and their rotating support elements in the agglomerator chamber through
openings shall be prevented by one or more of the following:
— fixed guards in accordance with EN ISO 14120:2015, that may be distance guards as defined in
EN ISO 14120:2015, 3.2.2;
— interlocking guards with guard locking in accordance with EN ISO 14120:2015 and
EN ISO 14119:2013, such that the guards remain closed and locked until all motions of the
agglomerating tools have ceased; safety related parts of the control system shall be according to:
— PL = d or SIL = 2 for the interlocking function and
r
— PL = c or SIL = 1 for the locking function.
r
Safety distances preventing access to agglomerating tools and their rotating support element, if any, shall
be in accordance with !EN ISO 13857:2019", Table 2, Table 3, Table 4 and/or Table 6.
If the feeding equipment, or its part or the discharge system act as a guard and is capable of being moved
out of position without the use of a tool and the resulting access to the agglomerator does not comply
with the above safety distances of !EN ISO 13857:2019", then it shall act as an interlocking guard
with guard locking in accordance with EN ISO 14119:2013, such that it remains locked in position until
all motions of the agglomerating tool have ceased; safety related parts of the control system shall be
according to:
— PL = d or SIL = 2 for the interlocking function and
r
— PL = c or SIL = 1 for the locking function.
r
If the dimensions of the opening are greater than 500 mm × 400 mm, so that whole body access is
possible, falling through the feed opening shall be prevented by positioning the lower edge of the opening
at a minimum height of 1,20 m from the working level.
If, for operational reasons, it is necessary to move agglomerating tools and their support when
interlocking guards are open, e.g. to change or to adjust the agglomerating tools, the rotating support
shall be designed to allow its manual movement and preventing any contact with the agglomerating tools
(e.g. fitting removable handles). See 6.2.3.
If the manual rotation is not possible (e.g. for large machines due to the mass of the rotating support) a
specific operational mode shall be allowed which permits the powered rotation of the agglomerating
tools and their support when the interlocking guards are open. This specific operational mode shall:
— be activated by a selector switch in accordance with EN ISO 12100:2010, 6.2.11.10, that can be locked
in all positions by a removable or coded key or other means that prevent unauthorised selection and
— enable the rotation of the agglomerating tools and their support by a hold-to-run control device in
combination with a maximum peripherical rotating speed of 2 m/min, in accordance with
EN ISO 12100:2010, 6.2.11.9 and with !EN 60204-1:2018, 9.2.3.5, 9.2.3.6 and 9.2.3.7".
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The safety related parts of the control circuit shall be PL = d or SIL 2.
r
To avoid any unexpected motion of rotating support of agglomerating tools during their changing or
adjusting, appropriate devices, e.g. mechanical lock with pins, shall be provided.
See 6.2.2, 6.2.3 and 6.2.5.
The temperature of the material that is processed shall be automatically controlled, e.g. using a cooling
system or reducing the speed of the rotating agglomerating tools, etc., in order to prevent the blocking of
the rotating agglomerating tools.
The safety related parts of the control system shall be according to PL = b.
r
See 6.2.10.
4.2.2 Feed material that is not pre-cut
If the intended use of the agglomerator is to process continuous films, fibres, strands or similar materials
likely to cause entanglement, then sensitive mechanically actuated protective equipment (e.g. pressure
sensitive edge, wire, etc.), in accordance with EN ISO 13856-2:2013 or EN ISO 13856-3:2013 shall be
provided at the feed opening to automatically stop the material being fed in when actuated. The sensitive
protective equipment shall be positioned at a height between 1,20 and 1,40 m in a way that it is
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