Machines for mechanical processing of minerals and similar solid materials - Safety - Part 4: Specific requirements for screening machinery

This part of prEN 1009, to be used together with prEN 1009-1, specifies the safety requirements and their verification for the design and construction of screening machinery for the mechanical processing in quarrying, recycling and processing mineral and by-products as defined in 3.1.
In addition, it specifies the type of information on safe working practices (including residual risks) to be provided by the manufacturer.
When requirements of this part of prEN 1009 are different from those which are stated in prEN 1009-1, the requirements of this part of prEN 1009 take precedence over the requirements of prEN 1009-1 for machines that have been designed and built according to the provisions of this part of prEN 1009.
This part of prEN 1009, together with prEN 1009-1, deals with all the significant hazards, hazardous situations and events relevant to screening machinery when they are used as intended and under the conditions foreseen by the manufacturer (see Clause 4).
NOTE 1   EN 13309 specifies test methods and acceptance criteria for evaluating the electromagnetic compatibility of all kind of mobile construction machinery.
NOTE 2   Specific requirements related to road traffic regulations (e.g. lighting, dimensions, speed limit plate) are not taken into account in this standard.
This document is not applicable to screening machinery which are manufactured before the date of publication of this document by CEN.

Maschinen für die mechanische Aufbereitung von Mineralien und ähnlichen festen Stoffen - Sicherheit - Teil 4: Spezifische Anforderungen für Klassiermaschinen (Siebmaschinen)

Dieser Teil der prEN 1009, der zusammen mit prEN 1009-1 anzuwenden ist, legt die Sicherheitsanforderungen und ihre Überprüfung für die Auslegung und Konstruktion von Klassiermaschinen (Siebmaschinen) zur mechanischen Aufbereitung im Sinne von Abbau, Recycling und Aufbereitung von Mineralien und Nebenprodukten nach Definition in 3.1 fest.
Zusätzlich spezifiziert er, welche Informationen zum sicheren Betrieb (einschließlich Restgefahren) vom Hersteller zur Verfügung zu stellen sind.
Wenn Anforderungen dieses Teils der prEN 1009 von in prEN 1009-1 beschriebenen abweichen, haben die Anforderungen dieses Teils der prEN 1009 für Maschinen, die entsprechend den Anforderungen dieses Teils der prEN 1009 ausgelegt und konstruiert wurden, Vorrang vor den Anforderungen von prEN 1009-1.
Dieser Teil der prEN 1009 befasst sich zusammen mit prEN 1009-1 mit allen signifikanten Gefährdungen, Gefährdungssituationen und -ereignissen, die für Klassiermaschinen gelten, wenn sie bestimmungsgemäß und unter den vom Hersteller vorhersehbaren Bedingungen verwendet werden (siehe Abschnitt 4).
ANMERKUNG 1   EN 13309 legt Prüfverfahren und Abnahmekriterien zur Bewertung der elektromagnetischen Verträglichkeit für alle Arten mobiler Baumaschinen fest.
ANMERKUNG 2   Spezifische Anforderungen im Hinblick auf Straßenverkehrsvorschriften (z. B. Beleuchtung, Maße, Geschwindigkeitsanforderungen, Kennzeichen) werden in dieser Norm nicht berücksichtigt.
Dieses Dokument gilt nicht für Klassiermaschinen (Siebmaschinen), die vor dem Datum der Veröffentlichung dieses Dokuments durch CEN hergestellt wurden.

Machines pour le traitement mécanique des minéraux et des matériaux solides similaires - Sécurité - Partie 4 : Prescriptions spécifiques pour machines de criblage

La présente partie du prEN 1009, à utiliser conjointement avec le prEN 1009-1, spécifie les exigences de sécurité et leur vérification pour la conception et la construction de machines de criblage pour traitement mécanique pour l'extraction, le recyclage et le traitement des minéraux et sous-produits tel que défini en 3.1.
En outre, la présente Norme européenne spécifie le type d'informations que le fabricant doit fournir sur les pratiques d'utilisation sûre (incluant les risques résiduels).
Lorsque des exigences de la présente partie du prEN 1009 diffèrent de celles spécifiées dans le prEN 1009-1, les exigences de la présente partie du prEN 1009 prévalent sur les exigences du prEN 1009-1 pour les machines conçues et fabriquées conformément aux dispositions de la présente partie du prEN 1009.
La présente partie du prEN 1009, utilisée conjointement avec le prEN 1009-1, traite de tous les phénomènes dangereux et situations et événements dangereux significatifs inhérents aux machines de criblage dans le cadre d'une utilisation normale et des conditions prévues par le fabricant (voir l'Article 4).
NOTE 1   L'EN 13309 spécifie des méthodes d'essai et des critères d'acceptation pour l'évaluation de la compatibilité électromagnétique de tous les types de machines mobiles pour la construction.
NOTE 2   Les exigences spécifiques aux réglementations routières (par exemple, éclairage, dimensions, plaque de limitation de vitesse) ne sont pas prises en compte dans la présente norme.
Le présent document ne s'applique pas aux machines fabriquées avant sa date de publication par le CEN.

Stroji za mehansko obdelavo mineralov in podobnih trdnih snovi - Varnost - 4. del: Posebne zahteve za presejalne stroje

General Information

Status
Published
Public Enquiry End Date
17-Jan-2018
Publication Date
07-Jun-2020
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
04-Jun-2020
Due Date
09-Aug-2020
Completion Date
08-Jun-2020

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Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 1009-4:2020
01-september-2020
Stroji za mehansko obdelavo mineralov in podobnih trdnih snovi - Varnost - 4. del:
Posebne zahteve za presejalne stroje
Machines for mechanical processing of minerals and similar solid materials - Safety -
Part 4: Specific requirements for screening machinery
Maschinen für die mechanische Aufbereitung von Mineralien und ähnlichen festen
Stoffen - Sicherheit - Teil 4: Spezifische Anforderungen für Klassiermaschinen
(Siebmaschinen)
Machines pour le traitement mécanique des minéraux et des matériaux solides similaires
- Sécurité - Partie 4 : Prescriptions spécifiques pour machines de criblage
Ta slovenski standard je istoveten z: EN 1009-4:2020
ICS:
13.110 Varnost strojev Safety of machinery
73.120 Oprema za predelavo rudnin Equipment for processing of
minerals
91.220 Gradbena oprema Construction equipment
SIST EN 1009-4:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 1009-4:2020

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SIST EN 1009-4:2020


EN 1009-4
EUROPEAN STANDARD

NORME EUROPÉENNE

May 2020
EUROPÄISCHE NORM
ICS 73.120; 91.220
English Version

Machines for mechanical processing of minerals and
similar solid materials - Safety - Part 4: Specific
requirements for screening machinery
Machines pour le traitement mécanique des minéraux Maschinen für die mechanische Aufbereitung von
et des matériaux solides similaires - Sécurité - Partie 4 : Mineralien und ähnlichen festen Stoffen - Sicherheit -
Prescriptions spécifiques pour machines de criblage Teil 4: Spezifische Anforderungen für
Klassiermaschinen (Siebmaschinen)
This European Standard was approved by CEN on 13 April 2020.

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
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1009-4:2020 E
worldwide for CEN national Members.

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SIST EN 1009-4:2020
EN 1009-4:2020 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Safety requirements and/or protective/risk reduction measures . 7
4.1 General . 7
4.2 Ergonomics requirements for screening machines maintenance . 8
4.3 Screen equipment (cross tensioned screening panels, sheets, blocks and other wear
parts) . 20
5 Verification of safety requirements and/or protective/risk reduction measures . 21
6 Information for use . 23
6.1 General . 23
6.2 Signals and warning devices . 23
6.3 Instruction handbook . 23
Annex A (informative) Example of screening machinery . 24
Annex B (informative) Trilingual terminology of screening machinery. 27
Annex C (informative) Calculation of the access dimensions . 28
Annex D (informative) List of significant hazards . 31
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 2006/42/EC aimed to be covered . 35
Bibliography . 37


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SIST EN 1009-4:2020
EN 1009-4:2020 (E)
European foreword
This document (EN 1009-4:2020) has been prepared by Technical Committee CEN/TC 151 “Construction
equipment and building material machines — Safety”, the secretariat of which is held by DIN.
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 November 2020, and conflicting national standards shall
be withdrawn at the latest by May 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 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).
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this
document.
This part of EN 1009 is intended to be used in conjunction with EN 1009-1:2020.
EN 1009 “Machines for mechanical processing of minerals and similar solid materials — Safety”
comprises the following parts:
— Part 1: Common requirements for machinery and processing plants
— Part 2: Specific requirements for feeding machinery and continuous handling equipment
— Part 3: Specific requirements for crushing and milling machinery
— Part 4: Specific requirements for screening machinery
— Part 5: Specific requirements for cleaning, recycling and mud treatment machinery
— Part 6: Specific requirements for mobile machinery (in preparation)
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.
3

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SIST EN 1009-4:2020
EN 1009-4:2020 (E)
Introduction
This document is a type-C standard as stated in EN ISO 12100.
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 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.
4

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SIST EN 1009-4:2020
EN 1009-4:2020 (E)
1 Scope
This document, to be used together with EN 1009-1:2020, specifies the safety requirements and their
verification for the design and construction of screening machinery for the mechanical processing in
quarrying, recycling and processing mineral and by-products as defined in 3.1.
In addition, it specifies the type of information on safe working practices (including residual risks) to be
provided by the manufacturer.
When requirements of this document are different from those which are stated in EN 1009-1:2020, the
requirements of this document take precedence over the requirements of EN 1009-1:2020 for machines
that have been designed and built according to the provisions of this document.
This document, together with EN 1009-1:2020, deals with all the significant hazards, hazardous
situations and events relevant to screening machinery when they are used as intended and under the
conditions foreseen by the manufacturer (see Annex C).
This document does not cover:
— design relating to road traffic regulations;
— hazards arising from the use of the machines in potentially explosive atmospheres as well as from
processing of explosive materials and risks related to electromagnetic compatibility;
— specific hazards related to mobile machinery.
NOTE 1 EN ISO 13766-1 and EN ISO 13766-2 specify test methods and acceptance criteria for evaluating the
electromagnetic compatibility of all kinds of mobile construction machinery.
NOTE 2 prEN 1009-6 “Specific requirements for mobile and semi mobile equipment” is under preparation to
cover specific requirements (e.g. mobility, braking, access, frequent transportation), including exceptions and
additional requirements for mobile and semi mobile equipment. This means that mobile machines are not covered
as long as EN 1009-6 is not published by CEN.
This document is not applicable to screening machinery which are manufactured before the date of
publication of this document by CEN.
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 547-1:1996+A1:2008, Safety of machinery — Human body measurements — Part 1: Principles for
determining the dimensions required for openings for whole body access into machinery
EN 547-2:1996+A1:2008, Safety of machinery — Human body measurements — Part 2: Principles for
determining the dimensions required for access openings
EN 1009-1:2020, Machines for mechanical processing of minerals and similar solid materials — Safety —
Part 1: Common requirements for machinery and processing plants
EN ISO 12100:2010, Safety of machinery — General principles for design — Risk assessment and risk
reduction (ISO 12100:2010)
EN ISO 13854:2019, Safety of machinery — Minimum gaps to avoid crushing of parts of the human body
(ISO 13854:2017)
5

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SIST EN 1009-4:2020
EN 1009-4:2020 (E)
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)
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,
EN 1009-1:2020 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp/ui
— IEC Electropedia: available at http://www.electropedia.org/
NOTE Annex A shows examples of screening machinery.
3.1
screening machinery
stationary or mobile machinery that separates industrial mineral by-products into two or more fractions
by dry or wet process through use of a screen (3.2)
Note 1 to entry: Screening machinery can be installed in a plant, a modular machinery or a mobile machine, as
defined in EN 1009 1:2020, 3.1 to 3.3 and illustrated in Annex B.
3.2
screen
one of the following machines: vibrating screen (3.3), roller screen (3.4) or tumbler screening machine
(3.5)
3.3
vibrating screen
screen (3.2) oscillated either by hydraulical, mechanical or electrical means for scalping and separation
[SOURCE: ISO 9045:1990, 3.2.38, modified by adding "hydraulical means"]
3.4
roller screen
roll screen
screen (3.2) consisting of a number of horizontal rotating shafts, fitted with elements arranged to provide
screening apertures for scalping and separation
Note 1 to entry: This may be a wobbler screen, a star screen, disk screen or other type of screen with rollers
rotating in the same direction.
[SOURCE: ISO 1213-1:1993, 4.5.8]
6

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EN 1009-4:2020 (E)
3.5
tumbler screening machine
tumbler screen
screening machine with a three-dimensional eccentric motion with a radial and tangential inclination
Note 1 to entry: Basically, this type of machine is used to screen for fine and ultra-fine products.
3.6
screening media
device fitted on each screening deck to separate products into two fractions
Note 1 to entry: This device can be, e.g. metallic, polyurethane or rubber.
Note 2 to entry: The dimension of this device may cover the full size of the screening deck or be composed with
an assembly of several modules.
4 Safety requirements and/or protective/risk reduction measures
4.1 General
Screening machinery shall comply with the requirements of EN 1009-1:2020, as far as not modified or
replaced by the requirements of this part.
For dry operation, when screens are dust-encapsulated, the dust-encapsulation shall allow the
replacement of the screen meshes, inspection and maintenance.
The following functions shall be stopped when opening screen oversize chute, and they shall not be able
to be started when the chutes are open and shall not be automatically re-started when the chutes are
closed:
— drive of the screen;
— relevant upstream and downstream machinery (e.g. bypass).
For maintenance, fall protection shall be provided:
— when the oversize chute is open (e.g. by a folding platform system);
— from the top deck outwards sides of the screen (e.g. by a handrail);
— through the decks of the screen (e.g. by a removable shield).
These access and fall protection shall allow the periodical interventions including the removal of meshes.
In deviation to EN ISO 14122, for maintenance above the screen, instead of fixed guardrails, removable
guardrails or permanent wire ropes providing the same protection as handrail and knee-rail (with no
direct anchorage to the machine) may be provided.
Warning signs (e.g. crushing, shearing, dust, PPE) shall be placed close to the relevant areas.
For inspection and maintenance (checking mesh conditions, greasing, sealing, lining conditions, cleaning,
changing meshes, changing lining, etc.), access and working spaces are specific according to screens
machinery design and shall comply with 4.2.1.
All relevant residual risks shall be part in the information for use in 6.3.1.
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EN 1009-4:2020 (E)
4.2 Ergonomics requirements for screening machines maintenance
4.2.1 General
According to EN 1009-1:2020, the EN ISO 14122 series, EN 547-1:1996+A1:2008 and
EN 547-2:1996+A1:2008 apply.
The design of screening machines shall be such that the frequency and duration of maintenance
operations in the screen, in which an operator is required to enter, are minimized.
The design of screening machines should be such that inspection, cleaning and maintenance operations
can be performed from a position outside of the screen box. This can be achieved for example by
providing means to adjust the screen tension from outside the screen box, providing access hatches in
the body of the screen in order to allow upper limb access to the tensioning bolts, reducing the size of the
screening media in order to facilitate the ease of removal of screening medias.
In complement to EN 1009-1:2020, 4.2.1, the minimum dimensions given in 4.2.2 and 4.2.3 shall be
considered taking into account any maintenance hatches and moveable parts that are incorporated into
screening machines. For example:
— moveable conveyors (for example, raising, lowering, sliding conveyors);
— moveable feeding hoppers;
— moveable chute;
— splitting of screens.
Where inspection, cleaning or maintenance is performed when moveable parts are in the raised position,
these moveable parts shall be mechanically secured with a device, for example locking pin. These devices
shall be permanently affixed to the machine or stored on a safe place on the machine.
Inspection, cleaning and maintenance procedures shall be described in the instruction handbook (folding,
dismantling meshes and lining, mechanical parts, etc.), see Clause 6.
In all cases described in 4.2.2 and 4.2.3, the reach distances may be increased depending on the length of
a tool, if such tool is intended to be used according to the instruction handbook of the manufacturer.
The mesh material can be metallic, rubber (RU) or polyurethane (PU) with tensioning or modular system.
Whatever is the mesh material the inspection, cleaning and maintenance procedures shall be described
in the instruction handbook (folding, dismantling meshes and lining, mechanical parts, etc.), see Clause 6.
4.2.2 Minimum dimensions for inspection
4.2.2.1 Inspection laterally from outside through an opening for one upper limb
As one arm is sufficient for access through an access opening with a minimum diameter, C, of 141 mm for
inspection from outside, maximum dimension for one upper limb to reach the inspection area (R) shall
be 495 mm (see Figure 1). It may be increased if the access openings, C, are larger than the minimum
dimensions.
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SIST EN 1009-4:2020
EN 1009-4:2020 (E)

Key
C minimum opening diameter
R maximum reaching distance (radius from opening)
Figure 1 — Access for inspection from outside and laterally through an opening
4.2.2.2 Inspection from outside through access opening(s) with two arms
Horizontal access openings for two arms shall be, as illustrated in Figure 2, the following minimum
distances:
A = 645 mm
B = 221 mm
H = 1 520 mm
Maximum reach distance = 462 mm
The maximum reach distance may be increased if the access openings are larger than the minimum
dimensions.
This requirement does not apply to screens the width of which is less than 645 mm.
9

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SIST EN 1009-4:2020
EN 1009-4:2020 (E)
Dimensions in millimetres

Key
A minimum width of opening
B minimum height of opening
H maximum height of the bottom point of the opening from ground level
Figure 2 — Inspection from outside through access opening(s) with two arms
The maximum dimension for upper limbs to reach the inspection area given value of 495 mm is a
minimum value linked to the minimum dimensions of the access opening. It may be increased with a
bending position.
4.2.2.3 Inspection from outside from the top
Horizontal access openings for two arms shall be the following minimum distances:
A = 645 mm
B = 221 mm
H = 903 mm to 1 152 mm
R = 462 mm
The maximum reach distance may be increased if the access opening are larger than the minimum
dimensions.
4.2.3 Minimum dimensions for maintenance
4.2.3.1 Maintenance from outside from front and rear
The opening for one or both arms shall be the followings minimum distances, as illustrated in Figure 3:
A = 645 mm
B = 300 mm
R = 506 mm
H ≤ 1 230 mm.
NOTE If the opening is greater than the minimum required dimensions, the grip reach value can increase.
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SIST EN 1009-4:2020
EN 1009-4:2020 (E)
Dimensions in millimetres

Key
A minimum width of opening
B minimum height of opening
R maximum reaching distance (radius from opening)
H maximum height of the bottom point of the opening from ground level
Figure 3 — Maintenance from outside from front and rear through access opening(s)
4.2.3.2 Maintenance from outside from the top
a) Access for maintenance downwards through a limited opening shall comply with the followings:
A = 645 mm
B = 300 mm
R = 506 mm
H = 900 mm to 1 200 mm.
Value H is a minimum value; It may be increased with a bending position if the means of access (H)
is between 900 mm and 1 200 mm (see Figure 3).
b) Access for maintenance forwards without limitation shall comply with the followings:
R = 615 mm
H = 900 mm to 1 200 mm.
See Figure 4.
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SIST EN 1009-4:2020
EN 1009-4:2020 (E)
c) In case of lying position:
1) there is also the possibility to carry out maintenance with 2 arms, each arm reaching through a
separate opening (reaching through different longitudinal beams);
2) where access openings are in a horizontal surface for downward entry, space shall be provided
for a lying position of the operator;
3) if the grip reach distance requirement is greater than 506 mm the dimensions of the access
opening shall be increased to allow entry of the upper body.
The minimum dimension for each opening shall be:
A = 221 mm
R = 506 mm.
Dimensions in millimetres

Key
R maximum reaching distance (radius from opening)
H maximum height of the bottom point of the opening from ground level
Figure 4 — Maintenance from the top without limitation
4.2.4 Minimum dimensions for inspection and maintenance from inside
4.2.4.1 General
If it is necessary to enter inside the screen for inspection and maintenance, in exemption to
EN 1009-1:2020, 4.2.1 the following subclauses 4.2.4.2 and 4.2.4.3 apply.
NOTE If there are space constraints in an existing plant, identical replacement of a screen is a spare part
replacement and therefore does not need to meet this requirement.
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SIST EN 1009-4:2020
EN 1009-4:2020 (E)
4.2.4.2 Passage from the top to work inside
The minimum dimensions of the passage from the top shall be:
— rectangular opening:
A = 645 mm
B = 450 mm
See Figure 5 a.
— circular opening:
C = 645 mm
See Figure 5 b.
The distance between two decks under cross beam shall be 550 mm, except for replacement or upgrade
on an existing plant due to space constraints, this minimum distance (H ) may be 450 mm.
2
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EN 1009-4:2020 (E)
Dimensions in millimetres

a) rectangular opening

b) circular opening
Key
A minimum width of opening
B minimum height of opening
C minimum opening diameter
Figure 5 — Passage from the top to work inside
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SIST EN 1009-4:2020
EN 1009-4:2020 (E)
4.2.4.3 Passage to access inside the screen
4.2.4.3.1 General
Minimum passage shall be minimum:
— to enter the body face to the opening (see Figure 6): 645 mm (4.2.9 shoulder Bideltoid) × 450 mm
(4.1.11 Thorax Width ISO 7250-3);
— to enter the body laterally to the opening (see Figure 7): 1 062 mm (4.2.8 sitting height 962 mm
+ 100 mm clothes) × 366 mm (chest depth 266 mm + 100 mm, P95).
The height of the platform shall comply with the requirements of EN ISO 14122-2:2016.
4.2.4.3.2 Punctual obstacle inside the screen
The distance between two decks under cross beam shall be 550 mm, except for replacement or upgrade
on an existing plant due to space constraints, this minimum distance may be 450 mm. See Figure 6.
In case where the minimum height (H ) is 450 mm because of space constraints listed above, the distance
1
(H ) between the deck and the obstacle shall be minimum 366 mm. See Figure 8.
2
Dimensions in millimetres

Key
A minimum width of opening
B minimum height of opening
H1 distance between two decks under cross beam
H2 distance between the deck and the obstacle
Figure 6 — Passage to access inside the screen – Entering the body face to the opening
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EN 1009-4:2020 (E)
Dimensions in millimetres

Key
A minimum width of opening
B minimum height of opening
H distance between two decks under cross beam
1
Figure 7 — Passage to access inside the screen – Entering the body laterally to the opening
Dimensions in millimetres

Key
A minimum width of opening
H distance between two decks under cross beam
1
H2 distance between the deck and the obstacle
Figure 8 — Passage dimensions between two decks if crawling is required
16

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SIST EN 1009-4:2020
EN 1009-4:2020 (E)
4.2.4.4 Working space to work inside
4.2.4.4.1 General
For maintenance on the upper deck of a screen, safety devices (e.g. guardrails, anti-fall device) shall be
installed during the operations and shall be described in the maintenance manual.
For maintenance from the rear or the front between two decks, the minimum width (A) shall be 645 mm
(see Figure 8).
The distance between two decks under cross beam shall be 550 mm except for replacement or upgrade
on an existing plant due to space constraints, this minimum distance (H ) may be 450 mm.
2
When it is not necessary to access beneath the obstacle(s) (see 4.2.4.4.2 and 4.2.4.4.3), the height below
obstacle(s) under which the operator can work shall be at least 300 mm.
When it is not necessary to access beneath the obstacle(s) nor needed to use tool, then the height below
the obstacle does not apply (e.g. self-supporting media) and the working procedure shall be provided in
the instructions for use.
4.2.4.4.2 Case of a single punctual obstacle (e.g. transmission mechanism)
The length of a punctual obstacle shall be no more than 393 mm, under the condition that access is
possible from each side of the obstacle (see Figure 9 and Figure 10).
Dimensions in millimetres

Figure 9 — Maximum dimensions of a punctual obstacle when access is possible one side
17

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Dimensions in millimetres

Figure 10 — Maximum dimensions of a punctual obstacle when access is possible from each side
4.2.4.4.3 Case of a combination of two cylindrical punctual obstacles (e.g. double transmission
mechanism)
For a combination of two cylindrical punctual obstacles, to allow the operator to work from each side of
the obstacles, the distance (D) between axles shall be determined on the basis of the values given in
Table 1 and illustrated in Figure 11.
Table 1 — Minimum working distance (D) between axles in case of a combination of two
obstacles
Height Distance between axles
H D
2
mm mm
300 700
375 800
18

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SIST EN 1009-4:2020
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Key
...

SLOVENSKI STANDARD
oSIST prEN 1009-4:2018
01-januar-2018
Stroji za mehansko obdelavo mineralov in podobnih trdnih snovi - Varnost - 4. del:
Posebne zahteve za presejalne stroje
Machines for mechanical processing of minerals and similar solid materials - Safety -
Part 4: Specific requirements for screening machinery
Maschinen für die mechanische Aufbereitung von Mineralien und ähnlichen festen
Stoffen - Sicherheit - Teil 4: Spezifische Anforderungen für Klassiermaschinen
(Siebmaschinen)
Machines pour le traitement mécanique des minéraux et des matériaux solides similaires
- Sécurité - Partie 4 : Prescriptions spécifiques pour machines de criblage
Ta slovenski standard je istoveten z: prEN 1009-4
ICS:
73.120 Oprema za predelavo rudnin Equipment for processing of
minerals
91.220 Gradbena oprema Construction equipment
oSIST prEN 1009-4:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 1009-4:2018

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oSIST prEN 1009-4:2018


DRAFT
EUROPEAN STANDARD
prEN 1009-4
NORME EUROPÉENNE

EUROPÄISCHE NORM

October 2017
ICS 73.120; 91.220
English Version

Machines for mechanical processing of minerals and
similar solid materials - Safety - Part 4: Specific
requirements for screening machinery
Machines pour le traitement mécanique des minéraux Maschinen für die mechanische Aufbereitung von
et des matières solides similaires - Sécurité - Partie 4 : Mineralien und ähnlichen festen Stoffen - Sicherheit -
Prescriptions spécifiques aux machines de calibrage Teil 4: Spezifische Anforderungen für
Klassiermaschinen (Siebmaschinen)
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 151.

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, Serbia, 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
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1009-4:2017 E
worldwide for CEN national Members.

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prEN 1009-4:2017 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 List of significant hazards . 6
5 Safety requirements and/or protective measures . 10
5.1 General . 10
5.2 Ergonomics requirements for screening machines maintenance . 11
5.2.1 General . 11
5.2.2 Minimum dimensions for inspection . 12
5.2.3 Minimum dimensions for maintenance . 14
5.2.4 Minimum dimensions for inspection and maintenance from inside . 15
5.3 Screen equipment (cross tensioned screening panels, sheets, blocks and other wear
parts) . 22
5.3.1 General . 22
5.3.2 Vibrating screens . 22
5.3.3 Rotary screens . 22
5.3.4 Roller screens/wobbler screens . 22
5.3.5 Star screens . 23
6 Verification of safety requirements and/or protective measures . 23
7 Information for use . 24
7.1 Instruction handbook . 24
7.1.1 General . 24
7.1.2 Rotary screens . 24
7.2 Warnings signs, alarms . 24
7.2.1 Rotary screens . 24
Annex A (informative) Example of screening machinery . 25
Annex B (informative) Trilingual terminology of screening machinery . 28
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 2006/42/EC aimed to be covered . 29
Bibliography . 30
2

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prEN 1009-4:2017 (E)
European foreword
This document (prEN 1009-4:2017) has been prepared by Technical Committee CEN/TC 151
“Construction equipment and building material machines - Safety”, the secretariat of which is held by
DIN.
This document is currently submitted to the CEN Enquiry.
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).
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this
document.
prEN 1009 “Machines for mechanical processing of minerals and similar solid materials — Safety”
comprises the following parts:
Part 1: Common requirements for partly completed machinery and processing plants
Part 2: Specific requirements for feeding machinery and continuous handling equipment
Part 3: Specific requirements for crushing and milling machinery
Part 4: Specific requirements for screening machinery
Part 5: Specific requirements for cleaning, recycling and mud treatment machinery
Part 6: Specific requirements for mobile and semi-mobile crushing and screening equipment
3

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Introduction
This document is a type-C standard as stated in EN ISO 12100.
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 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.
4

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1 Scope
This part of prEN 1009, to be used together with prEN 1009-1, specifies the safety requirements and their
verification for the design and construction of screening machinery for the mechanical processing in
quarrying, recycling and processing mineral and by-products as defined in 3.1.
In addition, it specifies the type of information on safe working practices (including residual risks) to be
provided by the manufacturer.
When requirements of this part of prEN 1009 are different from those which are stated in prEN 1009-1,
the requirements of this part of prEN 1009 take precedence over the requirements of prEN 1009-1 for
machines that have been designed and built according to the provisions of this part of prEN 1009.
This part of prEN 1009, together with prEN 1009-1, deals with all the significant hazards, hazardous
situations and events relevant to screening machinery when they are used as intended and under the
conditions foreseen by the manufacturer (see Clause 4).
NOTE 1 EN 13309 specifies test methods and acceptance criteria for evaluating the electromagnetic
compatibility of all kind of mobile construction machinery.
NOTE 2 Specific requirements related to road traffic regulations (e.g. lighting, dimensions, speed limit plate) are
not taken into account in this standard.
This document is not applicable to screening machinery which are manufactured before the date of
publication of this document by CEN.
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 349:1993+A1:2008, Safety of machinery — Minimum gaps to avoid crushing of parts of the human body
EN 547-1:1996+A1:2008, Safety of machinery — Human body measurements — Part 1: principles for
determining the dimensions required for openings for whole body access into machinery
EN 547-2:1996+A1:2008, Safety of machinery — Human body measurements — Part 2: principles for
determining the dimensions required for access openings
prEN 1009-1:2017, Machines for mechanical processing of minerals and similar solid materials — Safety —
Part 1: — Common requirements for partly completed machinery and processing plants
EN ISO 12100, Safety of machinery — General principles for design — Risk assessment and risk reduction
(ISO 12100:2010)
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 14120:2015, Safety of machinery — Guards — General requirements for the design and
construction of fixed and movable guards
EN ISO 14122 (series), Safety of machinery — Permanent means of access to machinery
5

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3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 12100, prEN 1009-1:2017
and the following apply.
3.1
vibrating screen
screen oscillated either by mechanical or by electrical means for scalping and separation
[SOURCE: ISO 9045:1990]
3.2
roller screen
roll screen
screen consisting of a number of horizontal rotating shafts, fitted with elements arranged to provide
screening apertures for scalping and separation
Note 1 to entry: This may be a wobbler screen, a star screen, disk screen or other type of screen with rollers
rotating in the same direction.
[SOURCE: ISO 1213-1:1993]
3.3
screening machinery
machinery that separates industrial mineral by-products into two or more fraction by dry or wet process
3.4
Tumbler screening Machine
Tumbler screen:
screening machine with a three dimensional eccentric motion with a radial and tangential inclination
Note 1 to entry: Basically this type of machine is used to screen for fine and ultra-fine products.
4 List of significant hazards
This clause contains all the significant hazards, hazardous situations and events common to the different
types of machines in the scope and also the hazards due to the assembly of different machines into a plant,
identified by risk assessments significant for this type of machinery and which require action to eliminate
or reduce the risk.
Table 1 — List of significant hazards, hazardous situation or hazardous events
a Hazard, hazardous situation or Origin Clause/subclause
Nbr
hazardous event of this document
1 Mechanical hazards due to:
1.1 Crushing hazard Drum rotating 5.3.3
Interaction between fix and 5.3.2, 5.3.3, 5.3.4
moving part
Material blockage 5.3.4, 5.3.5
Open space created by screen 5.1
chute opening
Means of access
6

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a Hazard, hazardous situation or Origin Clause/subclause
Nbr
hazardous event of this document
Vibration of the machine 5.1
Wrong warning sign 5.1, 5.3.2
1.2 Shearing hazard Interaction between fix and 5.3.2, 5.3.3, 5.3.4
moving part
Material blockage 5.3.4, 5.3.5
Open space created by screen 5.1
chute opening
Means of access
Wrong warning sign 5.1, 5.3.2, 5.3.2
1.3 Cutting or severing hazard Interaction between fix and 5.3.2, 5.3.3, 5.3.4
moving part
Material blockage 5.3.4, 5.3.5
Open space created by screen 5.1
chute opening
Means of access
Wrong warning sign 5.1, 5.3.2
1.4 Entanglement hazard Drum rotating 5.3.3
Material blockage 5.3.4, 5.3.5
Wrong warning sign 5.1
1.5 Drawing-in or trapping hazard Open space created by screen 5.1
chute opening
Means of access
Wrong warning sign 5.1
1.6 Impact hazard Drum rotating 5.3.3
Interaction between fix and 5.3.2, 5.3.3, 5.3.4
moving part
Material blockage 5.3.4, 5.3.5
Open space created by screen 5.1
chute opening
Means of access
Wrong warning sign 5.1, 5.3.2
5 Hazards generated by vibration
5.2 Whole body vibration, particularly Vibration of the machine 5.1
when combines with poor
Working near the screen when 5.2.2, 5.2.4
postures
machine is running
(inspection)
Wrong warning sign 5.3.2
7

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a Hazard, hazardous situation or Origin Clause/subclause
Nbr
hazardous event of this document
7 Hazards generated by materials and substances (and their constituent elements)
processed or used by the machinery
7.1 Hazards from contact with or Working near the screen when 5.2.2, 5.2.4
inhalation of harmful fluids, gases, machine is running
mists, fumes, and dusts (inspection)
Working outside or inside the 5.2.3, 5.2.4
machine when the machine is
stopped
Wrong warning sign 5.1, 5.3.2
8 Hazards generated by neglecting ergonomic principles in machinery design as e.g.
hazards from:
8.1 Unhealthy postures or excessive Heavy panel 5.3.1
effort
Open space created by screen 5.1
chute opening
Means of access
Small working space 7.1.1
Working near the screen when 5.2.2, 5.2.4
machine is running
(inspection)
Working outside or inside the 5.2.3, 5.2.4
machine when the machine is
stopped
8.2 Inadequate consideration of hand- Open space created by screen 5.1
arm or foot-leg anatomy chute opening
Means of access
Small working space 7.1.1
Working near the screen when 5.2.2, 5.2.4
machine is running
(inspection)
Working outside or inside the 5.2.3, 5.2.4
machine when the machine is
stopped
8.3 Neglected use of persona! Small working space 7.1.1
protection equipment
Working near the screen when 5.2.2, 5.2.4
machine is running
(inspection)
Working outside or inside the 5.2.3, 5.2.4
machine when the machine is
stopped
8.5 Heavy panel 5.3.1
8

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a Hazard, hazardous situation or Origin Clause/subclause
Nbr
hazardous event of this document
Mental overload and underload, Working near the screen when 5.2.2, 5.2.4
stress machine is running
(inspection)
Working outside or inside the 5.2.3, 5.2.4
machine when the machine is
stopped
8.6 Human error, human behaviour Working near the screen when 5.2.2 et 5.2.4
machine is running
(inspection)
Working outside or inside the 5.2.3, 5.2.4
machine when the machine is
stopped
8.8 Inadequate design or location of Wrong warning sign 5.1
visual display units
11 Impossibility of stopping the Drum rotating 5.3.3
machines in the best possible
conditions
17 Falling or ejected objects or Material blockage 5.3.4, 5.3.5, 7.1.2
fluids
Material projection 5.3.5
Wrong warning sign 5.3.2
18 Loss of stability/overturning of Drum rotating 5.3.3
machinery
Heavy panel 5.3.1
Material blockage 5.3.4, 5.3.5
Open space created by screen 5.1
chute opening
Means of access
Small working space 7.1.1
Vibration of the machine 5.1
Working near the screen when 5.2.2, 5.2.4
machine is running
(inspection)
Working outside or inside the 5.2.3, 5.2.4
machine when the machine is
stopped
19 Slip, trip and fall of persons Drum rotating 5.3.3
(related to machinery)
Heavy panel 5.3.1
Material blockage 5.3.4, 5.3.5
Open space created by screen 5.1
chute opening
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a Hazard, hazardous situation or Origin Clause/subclause
Nbr
hazardous event of this document
Means of access
Small working space 7.1.1
Vibration of the machine 5.1
Working near the screen when 5.2.2, 5.2.4
machine is running
(inspection)
Working outside or inside the 5.2.3, 5.2.4
machine when the machine is
stopped
Additional hazards, hazardous situations and hazardous events due to mobility
20 Relating to the travelling function
20.3 Movement without all parts in a Drum rotating 5.3.3
safe position
20.6 Insufficient ability of machinery to Drum rotating 5.3.3
be slowed down, stopped and
immobilised
a
As per EN 1050:1996, Annex A (replaced by EN ISO 12100:2010 where the corresponding Table of Annex B
is not equivalent).
5 Safety requirements and/or protective measures
5.1 General
Screening machinery shall comply with the requirements of prEN 1009-1:2017, as far as not modified or
replaced by the requirements of this part.
NOTE Maintenance in the screening machinery being difficult operations especially on the ergonomics aspects,
a special attention in the safety, protective and ergonomics measures is taken into account as recommended by the
directive machine ESR § 1.1.6:
“Under the intended conditions of use, the discomfort, fatigue and physical and psychological stress faced by the
operator must be reduced to the minimum possible, taking into account ergonomic principles such as:
— allowing for the variability of the operator’s physical dimensions, strength and stamina;
— providing enough space for movements of the parts of the operator’s body;
— avoiding a machine determined work rate;
— avoiding monitoring that requires lengthy concentration;
— adapting the man/machinery interface to the foreseeable characteristics of the operators”.
Screening machinery can be installed in a plant, a modular machinery or a mobile machine, as defined in
prEN 1009-1:2017, 3.1 to 3.3 and illustrated in Annex B.
For dry operation, when screens are dust-encapsulated they shall permit the replacement of the screen
meshes, inspection and maintenance.
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The following functions shall be stopped when opening screen oversize chute, and they shall not be able
to be started when the chutes are open and shall not be automatically re-started when the chutes are
closed:
— drive of the screen;
— relevant upstream and downstream machinery (e.g. bypass).
If the risk of falling down exists in the oversize chute a protection shall be fitted, e.g. a platform system
providing a vertical protection and a horizontal walkway.
If a falling down hazard exists from the top deck or from bottom deck of the screen, a protection shall be
provided (e.g. by a shield or by a handrail).
Access shall be provided to the lower and upper parts of the screen according to EN ISO 14122-4:2016,
5.5.1. It shall allow the periodical interventions including the removal of meshes.
Warning signs (e.g. crushing, shearing, dust, PPE) shall be placed close to the relevant areas.
EN ISO 14122 shall be complied with as a general rule but, in some conditions (e.g. to avoid vibrations
that may lead to undesirable mechanical stress), specific permanent protection means may be provided
(e.g. wire ropes provided as a handrail and knee-rail with no direct anchorage to the machine above the
screen). Application of these rules shall allow the periodical interventions including the removal of
meshes.
For preventive maintenance (inspection by checking mesh conditions, greasing, sealing, lining conditions,
etc.) and operative maintenance of the machine (cleaning, changing meshes, changing lining), access and
working spaces are specific according to screens machinery design and shall be comply with 5.2.1.
NOTE All relevant residual risks shall be part in the information for use in 7.1.1.
5.2 Ergonomics requirements for screening machines maintenance
5.2.1 General
According to prEN 1009-1, EN ISO 14122 series and EN 547-1 and -2 series apply.
The design of screening machines shall be such that the frequency and duration of maintenance
operations in the screen, in which an operator is required to enter, are minimized.
The design of screening machines should be such that inspection, cleaning and maintenance operations
can be performed from a position outside of the screen box. This can be achieved for example by
providing means to adjust the screen tension from outside the screen box, providing access hatches in
the body of the screen box in order to allow upper limb access to the tensioning bolts, reducing the size
of the screen media in order to facilitate the ease of removal of screens.
In complement to prEN 1009-1:2017, 5.2.1, the minimum dimensions given in 5.2.2 and 5.2.3 shall be
considered taking into account any maintenance hatches and moveable parts that are incorporated into
screening machines. For example:
— moveable conveyors (for example, raising, lowering, sliding conveyors);
— moveable feeding hoppers;
— moveable chute;
— splitting of screens.
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Where inspection, cleaning or maintenance is performed when moveable parts are in the raised position,
these moveable parts shall be mechanically secured with a device, for example locking pin. These devices
shall be permanently affixed to the machine or stored on a safe place on the machine.
Inspection, cleaning and maintenance procedures shall be described in the instruction handbook (folding,
dismantling meshes and lining, mechanical parts, etc.), see Clause 7.
NOTE In all cases described in 5.2.2 and 5.2.3, the reach distances may be increased depending on the length
of a tool, if such tool is intended to be used according to the instruction handbook of the manufacturer.
The mesh material can be metallic, rubber (RU) or polyurethane (PU) with tensioning or modular system.
Whatever is the mesh material the inspection, cleaning and maintenance procedures shall be described
in the instruction handbook (folding, dismantling meshes and lining, mechanical parts, etc.), see Clause 7.
5.2.2 Minimum dimensions for inspection
5.2.2.1 Inspection laterally from outside through an opening for one upper limb
As 1 arm is sufficient for access through an access opening with a minimum diameter of 141 mm for
inspection from outside, maximum dimension for one upper limb to reach the inspection area shall be
495 mm (see Figure 1). It may be increased if the access openings are larger than the minimum
dimensions.
NOTE This value is calculated on the basis of EN 547-2:1996+A1:2008, B.3.5 combined with
EN 547-2:1996+A1:2008, 4 and Figure 4.5 with B = t3 at P5.
Dimensions in millimetres

Figure 1 — Access for inspection from outside and laterally through an opening
5.2.2.2 Inspection from outside through access opening(s) with two arms
When access openings for 2 arms not exceeding 221 mm × 645 mm are in a horizontal surface for
downward entry, reach distance shall be maximum 462 mm. It may be increased if the access openings
are larger than the minimum dimensions. This requirement does not apply to screens the width of which
is less than 645 mm.
Height B = d1 + y = 121 + 100 = 221 mm.
The opening access shall not be less than 221 mm by 645 mm (see Figure 2).
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NOTE These values are based on EN 547-3+A1, as 2 arms are necessary to make the work. 221 mm (=arm
diameter) by 645 mm (=elbows to elbows breath+100mm for clothes allowance).
Height between the means of access and the lower part of the access opening (H) shall not exceed
1 520 mm, according to EN 547-2+A1.
Dimensions in millimetres

Key
H height between the working platform and the access opening
B minimum height of the opening access
Figure 2 — EN 547-2:1996+A1:2008, Figures B.10 - 4.3
The maximum dimension for upper limbs to reach the inspection area given value of 495 mm is a
minimum value linked to the minimum dimensions of the access opening. It may be increased with a
bending position.
5.2.2.3 Inspection from outside from the top
As 1 arm is sufficient for access through an access opening with a minimum diameter of 141mm for
inspection from outside, maximum dimension for one upper limb to reach the inspection area shall be
495 mm (see Figure 1).
There is also the possibility to inspect with 2 arms but each arm reach through a separate opening
(reaching through different longitudinal beams). The minimum dimension for each opening shall be a
diameter of 141mm.
When access openings for 2 arms not exceeding 221 mm x 645 mm are in a horizontal surface for
downward entry, reach distance shall be maximum 462 mm.
NOTE EN 547-3:1996+A1:2008, B.2 with P5 (grip reach) taken as a basis for calculation.
Distance H is deducted from ISO 7250, elbow height (reference 5 and 4.1.5 – P5 to P95). Values are 903
to 1152 mm – Values rounded for the requirement.
EN 547-2 does not consider the specific case needed i.e. EN 547-2 and ISO 7250 were combined to
provide a requirement for access opening.
The maximum dimension for upper limbs to reach the inspection area with given value of 495 mm and
462 mm is a maximum value linked to the minimum dimensions of the access opening; It may be
increased if the access opening are larger than the minimum dimensions.
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5.2.3 Minimum dimensions for maintenance
5.2.3.1 Maintenance from outside from front and rear
In case of maintenance from outside, the dimension of the access opening shall be greater than
300 mm × 645 mm (see 5.2.2.2) under the condition that the height between the means of access and the
lower part of the access opening is equal or lower than 1230 mm accor
...

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