EN 1612:2019

SLOVENSKI STANDARD
01-januar-2020
Nadomešča:
SIST EN 1612-1:2000+A1:2008
Stroji za predelavo gume in plastike - Stroji in naprave za tlačno litje - Varnostne
zahteve
Plastics and rubber machines - Reaction moulding machines and plants - Safety
requirements
Kunststoff- und Gummimaschinen - Reaktionsgießmaschinen und -anlagen -
Sicherheitsanforderungen
Machines pour les matières plastiques et le caoutchouc - Machines et installations de
moulage par réaction - Prescriptions de sécurité
Ta slovenski standard je istoveten z: EN 1612:2019
ICS:
83.200 Oprema za gumarsko Equipment for the rubber and
industrijo in industrijo plastics industries
polimernih materialov
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 1612
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2019
EUROPÄISCHE NORM
ICS 83.200 Supersedes EN 1612-1:1997+A1:2008
English Version
Plastics and rubber machines - Reaction moulding
machines and plants - Safety requirements
Machines pour les matières plastiques et le caoutchouc Kunststoff- und Gummimaschinen -
- Machines et installations de moulage par réaction - Reaktionsgießmaschinen und -anlagen -
Prescriptions de sécurité Sicherheitsanforderungen
This European Standard was approved by CEN on 21 July 2019.

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
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1612:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 8
4 Safety requirements and/or protective/risk reduction measures . 12
4.1 General . 12
4.2 Start function . 12
4.3 Stop function . 13
4.4 Restart function . 13
4.5 Safety related parts of the control system . 13
4.6 Crushing/impact hazards due to moving parts and/or units . 13
4.6.1 Drive and power transmission . 13
4.6.2 Moulding, product shaping and transport equipment . 13
4.6.3 Setting operation mode . 14
4.6.4 Cleaning operation mode . 14
4.6.5 Mixing head . 14
4.6.6 Mould transport equipment. 14
4.7 Hazards due to instability . 15
4.8 Hazards due to whiplash of hoses . 15
4.9 Hazards due to fluid ejection . 16
4.10 Hazards due to overpressure . 16
4.11 Hazards due to malfunction of the hydraulic and pneumatic systems . 16
4.12 Burning hazards due to elevated temperatures . 16
4.13 Hazards due to contact with the components or due to the inhalation of gases
hazardous to health . 16
4.14 Contact reactions hazards due to incorrect connection of hoses . 17
4.15 Hazards due to neglect of ergonomic principles . 17
4.16 Electrical hazards . 17
4.16.1 Protection against direct contact . 17
4.16.2 Protection against indirect contact . 17
4.16.3 Protection against ingress of solids and liquids . 17
4.17 Emergency stop . 17
4.18 Hazards generated by noise . 18
4.18.1 Noise reduction at source by design . 18
4.18.2 Noise reduction by protective measures . 18
5 Verification of the safety requirements and/or protective/risk reduction measures . 18
6 Information for use . 21
6.1 General . 21
6.2 Marking . 21
6.3 Instruction handbook . 22
Annex A (informative) List of significant hazards . 24
Annex B (normative) Noise measurement and declaration . 26
B.1 Introduction. 26
B.2 Determination of the A-weighted emission sound pressure level at the workstation . 26
B.2.1 Basic standards and measurement procedure . 26
B.2.2 Measurement uncertainty . 26
B.3 Determination of the A-weighted sound power level . 27
B.3.1 General . 27
B.3.2 Basic standards and measurement procedure . 27
B.3.3 Measurement uncertainty . 27
B.4 Mounting and operating conditions. 27
B.5 Information to be recorded and reported . 28
B.5.1 General . 28
B.5.2 General data. 28
B.5.3 Mounting and operating conditions. 28
B.5.4 Standards . 28
B.5.5 Noise data . 28
B.6 Declaration and verification of noise emission values . 28
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of EU Directive 2006/42/EC aimed to be covered . 30
Bibliography . 32

European foreword
This document (EN 1612:2019) 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 2020, and conflicting national standards shall be
withdrawn at the latest by April 2020.
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 will supersede EN 1612-1:1997+A1:2008.
In comparison with the previous edition, the following technical modifications have been made:
— clarification that reaction moulding machines and plants are dealt with;
— revised type-A and type-B standards are taken into account;
— list of significant hazards moved into an informative annex;
— the performance levels of safety related parts of control systems are specified in accordance with
EN ISO 13849-1:2015;
— technical specifications for moulding and transport equipment safeguarding are given;
— technical specifications for positioning of the emergency stop devices are given;
— the annex for noise measurement and declaration has been revised.
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 Directives.
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this
document.
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.
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.
1 Scope
This document specifies the essential safety requirements applicable to the design and construction of
reaction moulding machines and plants as defined in 3.1 and 3.2.
This document deals with all significant hazards, hazardous situations or hazardous events during all
phases of the machine life cycle (see EN ISO 12100:2010, 5.4), when reaction moulding machines and
plants are used as intended and under conditions of misuse that are reasonably foreseeable by the
manufacturer (see Annex A).
A reaction moulding machine begins at the working tank(s) and ends at the mixing head(s).
A reaction moulding plant begins at the working tank(s) and ends at the product shaping and transport
equipment or at the moulding equipment (see 3.6 and 3.7).
This document is not applicable to reaction moulding machines and plants manufactured before the date
of its publication.
NOTE Reaction moulding machines and plants usually do not produce explosive atmospheres. Where materials
are processed, which may cause an explosive atmosphere, the Directive 2014/34/EU on the Equipment intended
for use in Potentially Explosive Atmospheres (ATEX) can be applied.
Explosion hazards are not dealt with in this document.
Fire hazards are not dealt with in this document.
This document does not cover the requirements for the design of the exhaust systems.
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 574:1996+A1:2008, Safety of machinery — Two-hand control devices — Functional aspects —
Principles for design
EN 614-1:2006+A1:2009, Safety of machinery — Ergonomic design principles — Part 1: Terminology and
general principles
EN 614-2:2000+A1:2008, Safety of machinery — Ergonomic design principles — Part 2: Interactions
between the design of machinery and work tasks
EN 1005 (all parts), Safety of machinery — Human physical performance
EN 60204-1:2006, Safety of machinery — Electrical equipment of machines — Part 1: General
requirements (IEC 60204-1:2005, modified)
EN 60529:1991, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989)
EN 61496-1:2013, Safety of machinery — Electro-sensitive protective equipment — Part 1: General
requirements and tests (IEC 61496-1:2012)

As impacted by EN 60204-1:2006/A1:2009.
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 4413:2010, Hydraulic fluid power — General rules and safety requirements for systems and their
components (ISO 4413:2010)
EN ISO 4414:2010, Pneumatic fluid power — General rules and safety requirements for systems and their
components (ISO 4414:2010)
EN ISO 4871:2009, Acoustics — Declaration and verification of noise emission values of machinery and
equipment (ISO 4871:1996)
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 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 13856-1:2013, Safety of machinery — Pressure-sensitive protective devices — Part 1: General
principles for design and testing of pressure-sensitive mats and pressure-sensitive floors (ISO 13856-1:2013)
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 14119:2013, 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)
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 http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1
reaction moulding machine
machine that consists of at least one working tank, a metering unit and a mixing head
3.2
reaction moulding plant
complex installation for reaction moulding which consists of one or more reaction moulding machine(s),
a moulding equipment or a product shaping and transport equipment for the feeding of products
Note 1 to entry: See 3.1, 3.6 and 3.7.
3.3
working tank
tank which is part of the reaction moulding machine and contains at least one of the components
Note 1 to entry: See Figure 1.
Note 2 to entry: One tank may be used for each component or a mixture of more components.
3.4
mixing head
part of the reaction moulding machine for mixing components and delivery that can be manually operated
or powered
Note 1 to entry: See Figure 1.
Key
1 working tank
2 metering unit
3 mixing head
Figure 1 — Example of reaction moulding machine (side view)
3.5
components
chemical and mineral components that need to be mixed in the process to produce the final product
3.6
product shaping and transport equipment
part of the plant for the transport and shaping of the continuous product
Note 1 to entry: See Figure 2.
Key
1 product
2 side wall of product shaping and transport equipment for limiting the width of the product
3 equipment for feeding side cover sheet
4 product shaping and transport area
5 mixing head
6 equipment for manipulating the mixing head
Figure 2 — Product shaping and transport equipment (top view)
3.7
moulding equipment
equipment for continuous or discontinuous production of cured parts by one or more moulds
Note 1 to entry: See Figure 3 and Figure 4.
3.8
mould transport equipment
part of the plant for the transport of the moulds for continuous production
Note 1 to entry: Loading/unloading could be automatic or manual in a restricted area that is not shown in the
figures.
3.9
non-electrically controlled mixing head
mixing head opened and closed mechanically
Key
1 mould carrier frame
2 lower mould
3 upper mould
4 mixing head
Figure 3 — Fixed moulding equipment with fixed/movable mixing head for discontinuous
production (side view)
Key
1 mould transport equipment
2 open mould
3 closed mould
4 mixing head
Figure 4 — Mobile moulding equipment with fixed/movable mixing head, for continuous
production (top view)
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, which are not dealt with by this document.
4.2 Start function
The start of an operation shall be possible only when all safeguards are in place and functional (see
EN 60204-1:2006, 9.2.5.2). The machine shall only be started by actuation of the start device provided
for that purpose.
4.3 Stop function
A normal stop command shall be provided to bring the machine to a stop. The normal stop command
shall function as a category 0 or 1 in accordance with EN 60204-1:2006, 9.2.2 and required Performance
level (PL ) = c EN ISO 13849-1:2015.
r
An additional operational stop that does not cut off the energy supply to the actuators may be installed
according to category 2 in accordance with EN 60204-1:2006, 9.2.2 and PL = b EN ISO 13849-1:2015 for
r
the movements which are enclosed by safeguards.
4.4 Restart function
An interruption or a failure of the power supply shall not result in a loss of safety function and restoration
of the energy supply shall not result in the automatic restarting of the machine (see EN ISO 12100:2010,
6.2.11.4 and 6.2.11.5).
4.5 Safety related parts of the control system
The safety related parts of the control system shall be in accordance with EN ISO 13849-1:2015. PL for
r
the relevant safety functions are given in the corresponding subclauses.
4.6 Crushing/impact hazards due to moving parts and/or units
4.6.1 Drive and power transmission
The access to moving parts of the drive and power transmission shall be prevented by enclosing guards
according to EN ISO 14120:2015. The openings in the guards shall comply with EN ISO 13857:2008,
Table 4.
4.6.2 Moulding, product shaping and transport equipment
The access to all the moving parts during production shall be prevented by distance guards in accordance
with EN ISO 13857:2008, Table 2 and Table 4 and EN ISO 14120:2015, in combination with one or more
of the following safeguards, in order to stop all dangerous movements if actuated:
— interlocking guards with or without guard locking in accordance with EN ISO 14119:2013; for
interlocked guards where full body access is possible, it shall be possible to open them from the inside
without the use of ancillary means;
— trip devices:
— electro-sensitive protective equipment in accordance with EN 61496-1:2013, type 2;
— pressure-sensitive protective mats in accordance with EN ISO 13856-1:2013;
— laser scanner in accordance with EN 61496-1:2013.
Interlocking guards without guard locking and trip devices shall be positioned in accordance with
EN ISO 13855:2010.
If full body access is possible a reset device according to EN ISO 13849-1:2015, 5.2.2 shall be installed to
prevent the unexpected restart when somebody is inside the protected area.
of the safety related parts of the control system in accordance with EN ISO 13849-1:2015 for the
The PLr
stopping of dangerous moving parts of the machine shall be as follows:
— handling unit (e.g. for parts or mixing head or moulds) ≤ 3 axes: PL = c;
r
— handling unit (e.g. for parts or mixing head or moulds) > 3 axes: PL = d;
r
— moulds closing: PL = d;
r
— moulds opening: PL = b.
r
4.6.3 Setting operation mode
If the safeguards shall be disabled for setting, a lockable mode selector in accordance with
EN ISO 12100:2010, 6.2.11.10 and EN 60204-1:2006, 9.2.3 and 9.2.4 shall be used in combination with
one of the following devices:
a) a two-hand control device in accordance with EN 574:1996+A1:2008 type IIIB and positioned in
accordance with EN ISO 13855:2010; for movements that can create crushing/shearing hazards (e.g.
mould closing) the safety related part of the control circuit shall be in accordance with PL = d of
r
EN ISO 13849-1:2015; for other hazards (e.g. mould opening) PL = b of EN ISO 13849-1:2015; the
r
operator shall have a clear view of the dangerous area;
b) a hold-to-run control device as defined in EN ISO 12100:2010, 3.28.3 according to PL = c of
r
EN ISO 13849-1:2015, in combination with a max speed of 2 m/min in accordance with PL = d of
r
EN ISO 13849-1:2015 for mould closing and PL = b of EN ISO 13849-1:2015 for mould opening; the
r
operator shall have a clear view of the dangerous area; the hold-to-run control shall be a three-
position device:
1) 1st position: stop;
2) 2nd position: run;
3) 3rd position: stop.
The operating procedures shall be described in the information for use (see 6.3).
4.6.4 Cleaning operation mode
Cleaning shall be done with the machine at rest. If it is necessary to clean while the machine is running
the same requirements described above for setting shall be applied.
4.6.5 Mixing head
The position of the mixing head during production shall be in the area protected by guards and safeguards
of 4.6.2. If for operational reasons, e.g. testing purposes, the position of the mixing head shall be outside
of the protected area, the movement of the mixing head shall be controlled by a hold to run control device
according to PL = c EN ISO 13849-1:2015 in combination with a max speed of 2 m/min and in
r
accordance with PL = d EN ISO 13849-1:2015. The operator shall have a clear view of the dangerous
r
area.
4.6.6 Mould transport equipment
The access to all dangerous areas of the mould transport equipment shall be prevented by distance
guards in accordance with EN ISO 14120:2015 and EN ISO 13857:2008, Table 2 and Table 4 except of the
working area(s) for manual loading and unloading operations. In this working area any movement of the
mould shall be prevented except transport and access to any other movement shall be prevented by
distance guards according to EN ISO 14120:2015 and EN ISO 13857:2008, Table 2 and Table 4.
In this working area the operator shall be protected, when standing in front of the mould transport
equipment, by the fo
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