Safety of machinery - Safety requirements for the design and construction of paper making and finishing machines - Part 4: Pulpers and their loading facilities

This European Standard applies to pulpers and their loading facilities intended for use in paper making and shall be used together with EN 1034-1:2000+A1:2009. It deals with all significant hazards, hazardous situations and hazard events relevant to pulpers and their loading facilities, when they are used as intended and under the conditions foreseen by the manufacturer (see clause 4).
This European Standard is not applicable to pulpers and their loading facilities that have been manufactured before the date of publication of this standard.

Sicherheit von Maschinen - Sicherheitstechnische Anforderungen an Konstruktion und Bau von Maschinen der Papierherstellung und Ausrüstung - Teil 4: Stofflöser und deren Beschickungseinrichtungen

Dieses Dokument legt Sicherheitsanforderungen fest.
Es gilt für Stofflöser und deren Beschickungseinrichtungen, die zur Verwendung in der Papierherstellung bestimmt sind, sowie für Stofflöser, die in Zellstofftrocknern eingesetzt werden, und ist zusammen mit prEN 1034-1:2019 zu verwenden.
Dieses Dokument behandelt alle signifikanten Gefährdungen, Gefährdungssituationen und Gefährdungsereignisse, die für Stofflöser und ihre Beschickungseinrichtungen relevant sind, wenn sie bestimmungsgemäß und unter Bedingungen des Missbrauchs eingesetzt werden, die für den Hersteller vernünftigerweise vorhersehbar sind.
Dieses Dokument gilt nicht für Stofflöser und deren Beschickungseinrichtungen, die vor dem Datum der Veröffentlichung dieser Norm hergestellt wurden.

Sécurité des machines - Prescriptions de sécurité pour la conception et la construction de machines de fabrication et de finition du papier - Partie 4: Triturateurs et leurs dispositifs d'alimentation

Le présent document stipule les exigences en matière de sécurité.
Il s’applique aux triturateurs et à leurs systèmes d’alimentation destinés à la fabrication du papier ainsi qu’à ceux utilisés avec les séchoirs de pâtes et doit être utilisé conjointement avec l’EN 1034 1:2021.
Le présent document traite tous les phénomènes dangereux significatifs, les situations dangereuses et les évènements dangereux engendrés par les triturateurs et leurs systèmes d’alimentation lorsqu’ils sont utilisés normalement et dans des conditions de mauvaise utilisation raisonnablement prévisibles par le constructeur.
Le présent document n’est pas applicable aux triturateurs et à leurs systèmes d’alimentation qui ont été fabriqués avant la date de publication du présent document.

Varnost strojev - Varnostne zahteve za načrtovanje in izdelavo strojev in naprav za izdelavo in dodelavo papirja - 4. del: Razpuščevalniki in pripadajoče naprave za polnjenje

Ta evropski standard se uporablja za razpuščevalnike in pripadajoče naprave za polnjenje, namenjene za uporabo pri izdelavi papirja, ter ga je treba uporabljati s standardom EN 1034-1:2000+A1:2009. Obravnava vsa večja tveganja, nevarne razmere in dogodke v zvezi z razpuščevalniki in pripadajočimi napravami za polnjenje, kadar se uporabljajo v skladu z njihovim namenom in pod pogoji, ki jih je predvidel proizvajalec (glej točko 4).
Ta evropski standard se ne uporablja za razpuščevalnike in pripadajoče naprave za polnjenje, ki so izdelani pred datumom objave tega standarda.

General Information

Status
Published
Public Enquiry End Date
02-Mar-2020
Publication Date
07-Dec-2021
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Dec-2021
Due Date
05-Feb-2022
Completion Date
08-Dec-2021

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SLOVENSKI STANDARD
SIST EN 1034-4:2022
01-januar-2022
Nadomešča:
SIST EN 1034-4:2006+A1:2010

Varnost strojev - Varnostne zahteve za načrtovanje in izdelavo strojev in naprav za

izdelavo in dodelavo papirja - 4. del: Razpuščevalniki in pripadajoče naprave za
polnjenje

Safety of machinery - Safety requirements for the design and construction of paper

making and finishing machines - Part 4: Pulpers and their loading facilities

Sicherheit von Maschinen - Sicherheitstechnische Anforderungen an Konstruktion und

Bau von Maschinen der Papierherstellung und Ausrüstung - Teil 4: Stofflöser und deren

Beschickungseinrichtungen

Sécurité des machines - Prescriptions de sécurité pour la conception et la construction

de machines de fabrication et de finition du papier - Partie 4: Triturateurs et leurs

dispositifs d'alimentation
Ta slovenski standard je istoveten z: EN 1034-4:2021
ICS:
13.110 Varnost strojev Safety of machinery
21.020 Značilnosti in načrtovanje Characteristics and design of
strojev, aparatov, opreme machines, apparatus,
equipment
85.100 Oprema za papirno industrijo Equipment for the paper
industry
SIST EN 1034-4:2022 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 1034-4:2022
---------------------- Page: 2 ----------------------
SIST EN 1034-4:2022
EN 1034-4
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2021
EUROPÄISCHE NORM
ICS 85.100 Supersedes EN 1034-4:2005+A1:2009
English Version
Safety of machinery - Safety requirements for the design
and construction of paper making and finishing machines -
Part 4: Pulpers and their loading facilities

Sécurité des machines - Exigences de sécurité pour la Sicherheit von Maschinen - Sicherheitstechnische

conception et la construction de machines de Anforderungen an Konstruktion und Bau von

fabrication et de finition du papier - Partie 4 : Maschinen der Papierherstellung und Ausrüstung - Teil

Triturateurs et leurs systèmes d'alimentation 4: Stofflöser und deren Beschickungseinrichtungen

This European Standard was approved by CEN on 10 October 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 1034-4:2021 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN 1034-4:2022
EN 1034-4:2021 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

Introduction .................................................................................................................................................................... 5

1 Scope .................................................................................................................................................................... 6

2 Normative references .................................................................................................................................... 6

3 Terms and definitions ................................................................................................................................... 8

4 List of significant hazards ......................................................................................................................... 12

5 Safety requirements and/or measures ................................................................................................ 12

5.1 General ............................................................................................................................................................. 12

5.2 Requirements for safety devices ............................................................................................................ 12

5.3 Power transmission elements ................................................................................................................. 12

5.4 Workplaces, access stairs, walkways, passageways ........................................................................ 12

5.5 Falling hazard on pulpers ......................................................................................................................... 13

5.6 Loading facilities on pulpers .................................................................................................................... 16

5.7 Start-up warning devices........................................................................................................................... 17

5.8 Emergency stop devices ............................................................................................................................. 17

5.9 Emptying of the stand-alone pulper/under machine pulper ....................................................... 18

5.10 Isolation and energy dissipation, prevention of unexpected start-up ..................................... 18

5.11 Control systems and actuators ................................................................................................................ 18

5.12 Integrated lighting ....................................................................................................................................... 20

5.13 Ergonomic principles .................................................................................................................................. 20

5.14 Electrical equipment ................................................................................................................................... 20

5.15 Hydraulic equipment .................................................................................................................................. 20

5.16 Pneumatic equipment ................................................................................................................................ 20

5.17 Noise ................................................................................................................................................................. 20

5.18 Hazards from hazardous substances .................................................................................................... 20

5.19 Equipment and measures for maintenance and inspection and cleaning ............................... 20

5.20 Hazards generated by material ............................................................................................................... 22

5.21 Powered valves ............................................................................................................................................. 22

6 Verification of compliance with safety requirements and/or protective measures ........... 22

7 Information for use ..................................................................................................................................... 23

7.1 General ............................................................................................................................................................. 23

7.2 Specific information on machinery ....................................................................................................... 23

7.3 Specific information in the instruction handbook ........................................................................... 23

Annex A (informative) Example of a commercially available safety systems for securing

access/rescue lifting device together with examples of fastening device ............................... 25

Annex B (informative) Example of a noise declaration for pulpers according to the

specifications of EN 13023:2003+A1:2010 and EN 1034-1:2021 ............................................... 27

Annex C (informative) List of significant hazards ........................................................................................... 29

Annex ZA (informative) Relationship between this European Standard and the essential

requirements of Directive 2006/42/EC aimed to be covered ..................................................... 31

Bibliography ................................................................................................................................................................. 33

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SIST EN 1034-4:2022
EN 1034-4:2021 (E)
European foreword

This document (EN 1034-4:2021) has been prepared by Technical Committee CEN/TC 198 “Printing and

paper machinery - 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 May 2022, 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 supersedes EN 1034-4:2005+A1:2009.

In comparison with the previous edition, the following technical modifications have been made:

a) Throughout the document, clear differentiation between the different types of pulpers. The term

under machine pulper/machine integrated pulper has been added (including schematic

representation). The term stand-alone pulper has been introduced for differentiation.

b) In 5.5.1: Addition of a requirement regarding maximum distance between pulper wall and walkway

floor; addition of a requirement for means of access and walkways regarding use of corrosion

resistant or galvanized materials.

c) Throughout the document, the requirements for safety-related functions have been added and

updated; in 5.11.3, the inclusion of a table with an overview of the safety functions.

d) A new subclause 5.9 with requirements for the emptying of stand-alone pulpers and under machine

pulpers has been added.

e) In 5.19 review of requirements on maintenance, inspection and cleaning requirements: as an

alternative to manholes (previously only required), provision for mounting systems for safe entry

and rescue systems (addition of an example of an entry/rescue system in Annex A), provision of a

separate system for transporting tools when entering the pulper, addition of measures to prevent

the occurrence of hazardous gases, such as appropriate openings, forced ventilation or ventilation

through trash discharge gates.

f) In Clause 7, information on maintenance, inspection and cleaning has been added.

g) Review of Annex ZA.

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.

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,

---------------------- Page: 5 ----------------------
SIST EN 1034-4:2022
EN 1034-4:2021 (E)

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.
---------------------- Page: 6 ----------------------
SIST EN 1034-4:2022
EN 1034-4:2021 (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 the case of machinery intended for use by consumers).

The above-mentioned stakeholder groups have been given the possibility to participate in 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 that 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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SIST EN 1034-4:2022
EN 1034-4:2021 (E)
1 Scope
This document specifies safety requirements.

This document is applicable to pulpers and their loading facilities intended for use in paper making as

well as for pulpers used in pulp drying machines and is intended to be used together with

EN 1034-1:2021.

This document deals with all significant hazards, hazardous situations or hazardous events relevant to

pulpers and their loading facilities, when they are used as intended and under conditions of misuse which

are reasonably foreseeable by the manufacturer.

This document does not apply to pulpers and their loading facilities that have been manufactured before

the date of publication of this document.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitute 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 547-3:1996+A1:2008, Safety of machinery - Human body measurements - Part 3: Anthropometric data

EN 617:2001+A1:2010, Continuous handling equipment and systems - Safety and EMC requirements for the

equipment for the storage of bulk materials in silos, bunkers, bins and hoppers

EN 618:2002+A1:2010, Continuous handling equipment and systems - Safety and EMC requirements for

equipment for mechanical handling of bulk materials except fixed belt conveyors

EN 619:2002+A1:2010, Continuous handling equipment and systems - Safety and EMC requirements for

equipment for mechanical handling of unit loads

EN 620:2002+A1:2010, Continuous handling equipment and systems - Safety and EMC requirements for

fixed belt conveyors for bulk materials

EN 741:2000+A1:2010, Continuous handling equipment and systems - Safety requirements for systems and

their components for pneumatic handling of bulk materials

EN 1034-1:2021, Safety of machinery - Safety requirements for the design and construction of paper making

and finishing machines - Part 1: Common requirements
EN 1496:2017, Personal fall protection equipment - Rescue lifting devices

EN 13023:2003+A1:2010, Noise measurement methods for printing, paper converting, paper making

machines and auxiliary equipment - Accuracy grades 2 and 3

EN 60204-1:2018, Safety of machinery - Electrical equipment of machines - Part 1: General requirements

(IEC 60204-1:2016)
---------------------- Page: 8 ----------------------
SIST EN 1034-4:2022
EN 1034-4:2021 (E)

EN 61511-1:2017, Functional safety - Safety instrumented systems for the process industry sector - Part 1:

Framework, definitions, system, hardware and application programming Requirements (IEC 61511-1:2016)

EN 62061:2005, Safety of machinery - Functional safety of safety-related electrical, electronic and

programmable electronic control systems (IEC 62061:2005)

EN IEC 61000-6-2:2019, Electromagnetic compatibility (EMC) - Part 6-2: Generic standards -Immunity

standard for industrial environments

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 12100:2010, Safety of machinery - General principles for design - Risk assessment and risk reduction

(ISO 12100:2010)

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 13849-2:2012, Safety of machinery - Safety-related parts of control systems - Part 2: Validation

(ISO 13849-2:2012)

EN ISO 13854:2019, Safety of machinery - Minimum gaps to avoid crushing of parts of the human body

(ISO 13854:2017)

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 14118:2018, Safety of machinery - Prevention of unexpected start-up (ISO 14118:2017)

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)

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)
This document is impacted by the amendment EN 61511-1:2017/A1:2017.

This document is impacted by the amendments EN 62061:2005/A1:2013, EN 62061:2005/A2:2015 and the

corrigendum EN 62061:2005/corrigendum Feb. 2010.
---------------------- Page: 9 ----------------------
SIST EN 1034-4:2022
EN 1034-4:2021 (E)

EN ISO 14122-4:2016, Safety of machinery - Permanent means of access to machinery - Part 4: Fixed

ladders (ISO 14122-4:2016)

EN ISO 14123-1:2015, Safety of machinery - Reduction of risks to health resulting from hazardous

substances emitted by machinery - Part 1: Principles and specifications for machinery manufacturers

(ISO 14123-1:2015)

EN ISO 14123-2:2015, Safety of machinery - Reduction of risks to health resulting from hazardous

substances emitted by machinery - Part 2: Methodology leading to verification procedures (ISO 14123-

2:2015)
3 Terms and definitions

For the purposes of this document, the terms and definitions given in EN ISO 12100:2010,

EN 1034-1:2021 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
pulper

machine that dissolves raw materials to form a pumpable defibrated stock suspension to be used for the

production of paper, board, cardboard,tissue, fibreboard or semi-finished pulp products

Note 1 to entry: Pulper can be designed either as stand-alone pulper (3.2), or as drum pulper (3.4) or as machine-

integrated pulper (3.3).

Note 2 to entry: Examples of raw materials processed in pulpers are wood pulp, pulp, recovery stock and waste

paper.
3.2
stand-alone pulper

pulper consisting of a fixed tank and a power-driven rotor to break down the charged raw material

Note 1 to entry: The principle of a rotor pulper is illustrated in Figure 1.

Note 2 to entry: The raw material can be charged in the form of bales or in the form of bulk material or loose bulk

material with the addition of water.
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SIST EN 1034-4:2022
EN 1034-4:2021 (E)
Key
1 drive 4 tank 7 manhole/access opening
2 discharging pump 5 rotor 8 charging conveyor
3 charging pump/water pump 6 trash discharge gate 9 feeding conveyor
Figure 1 — Pulper with loading facility (example)
3.3
under machine pulper
machine-integrated pulper

pulper integrated into a paper making and finishing machine to pick up the recovery stock or broke

coming from these machines

Note 1 to entry: Figure 2 shows a schematic representation of a under machine pulper.

Note 2 to entry: For example, machine-integrated pulpers are located in particular below a paper, board or tissue

machine, but also below a slitter rewinder.
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SIST EN 1034-4:2022
EN 1034-4:2021 (E)
Key
1 entry possibility for paper web
2 spray pipes for water inflow
3 pulper tank
4 manhole/access opening (position variable, depending on accessibility)
5 discharge pump for accept stock
6 drive
Figure 2 — Example of an under machine pulper
3.4
drum pulper

pulper consisting of a horizontal drum rotating round its horizontal axis in which raw material is

dissolved with the addition of water
Note 1 to entry: The principle of a drum pulper is illustrated in Figure 3.
---------------------- Page: 12 ----------------------
SIST EN 1034-4:2022
EN 1034-4:2021 (E)
Key
1 entry opening for raw material and water
2 spray pipes for water inflow
3 exit of dissolved pulp through perforation of the drum body
4 discharge pump for accept stock
5 reject discharge
Figure 3 — drum pulper (schematic representation)
3.5
loading facility

machinery such as continuous conveyor, lifting device or a combination of these machines intended to

charge pulpers with the raw material to be dissolved such as pulp, waste paper or recovery stock

3.6
feeding conveyor

continuous conveyor as part of the loading facility (3.5) onto which the raw material to be dissolved is

loaded with fork lift, mechanical shovel loaders or lifting tools
Note 1 to entry: See Figure 1.
3.7
charging conveyor

continuous conveyor as part of the loading facility (3.5), which conveys the raw material to be dissolved

into the stand-alone pulper
Note 1 to entry: See Figure 1.
---------------------- Page: 13 ----------------------
SIST EN 1034-4:2022
EN 1034-4:2021 (E)
3.8
digester gas

gas mixture generated during anaerobic digestion comprising mainly methane, carbon dioxide and

hydrogen sulfide

Note 1 to entry: If residues remain in the stopped pulper for a longer period of time (typically 0,5 to 2 days),

digester gas can develop. Depending on the prevailing conditions (e.g. temperature, type of material introduced),

this can happen in individual cases after a few hours or even after days.
[SOURCE: EN 16323:2014, modified — Note and hydrogen sulfide added.]
4 List of significant hazards

For an overview of all significant hazards dealt with in this document, see Annex C, Table C.1.

5 Safety requirements and/or measures
5.1 General

Machinery shall comply with the safety requirements and/or 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, e.g. avoidance of sharp edges.

5.2 Requirements for safety devices
5.2.1 The requirements of EN 1034-1:2021, 5.1 shall be satisfied.

5.2.2 The instruction handbook shall contain instructions for checking the safety devices.

5.3 Power transmission elements

Safety devices for power transmission elements between the drive and rotor or drum of the pulper shall

be selected and designed as specified in EN 1034-1:2021, 5.2.
5.4 Workplaces, access stairs, walkways, passageways

5.4.1 The requirements of 5.5 of EN 1034-1:2021 and EN ISO 14122-1:2016, EN ISO 14122-2:2016,

EN ISO 14122-3:2016, EN ISO 14122-4:2016 as well as of 5.4.2, 5.4.3 and 5.6.4 shall be satisfied.

5.4.2 Stairs and walkways on drum pulpers shall be fitted in such a way that in-running nips between

these elements and the drum are avoided. The safety distances specified in EN 1034-1:2021, 5.4 and in

EN ISO 13857:2019, Table 2 shall be applied.

5.4.3 Where access is required to parts of the machine, but is prevented or made difficult by the

position of the loading facility, crossovers or passageways shall be provided so that access to the loading

facility is avoided.
---------------------- Page: 14 ----------------------
SIST EN 1034-4:2022
EN 1034-4:2021 (E)
5.5 Falling hazard on pulpers
5.5.1 General requirements:

By appropriate design, installation and, if necessary, additional measures against tripping or falling, it

shall be ensured that persons cannot fall into the pulper. Fall-off protections, e.g. at the pulp tank or at

the entry openings of drum pulper shall be at least 1,20 m high (measured from possible standing level)

and designed in such a way that climbing up and falling through are prevented.

The distance between the pulper wall and the stand area at the pulper shall not exceed 0,12 m in order

to prevent tripping or falling.

Corrosion-resistant or galvanized material should be used for the construction of working platforms,

walkways, stairs and fall-off protections when exposed to moisture in order to prevent risks due to loss

of strength of the supporting elements as a result of expected excessive corrosion.

NOTE Continuous exposure to moisture is usually to be expected up to 2 m from the moisture source. In this

context, e.g. the raw material infeed could be considered as the moisture source. Therefore, e.g. for stand-alone

pulpers with a cover on the top, the area outside the tank will generally be considered dry, but not for pulpers

without a cover.
5.5.2 Danger of falling into stand-alone pulpers and under machine pulpers:

Persons are prevented from falling into the stand-alone pulper or machine integrated pulper, if:

— on stand-alone pulpers with a tank open at the top, the upper edge of the tank is at least 1,20 m above

standing level and the outer pulper walls are designed so that stepping up on them is not possible. If

the upper edge of the tank is lower, an additional fall-off protection shall be provided to meet the

requirements mentioned above;

— by closing the pulper tank with a load-bearing cover. If there are openings in this cover, they shall be

provided with closing lids or flaps. The closing lids or flaps shall be equipped with at least one handle

for opening. When the cover or flap is open, a grille permanently installed in the opening shall

prevent persons from falling through. Unintentional closing of the lid or flap from the open position

shall be prevented by design;

— in the case of stand-alone pulpers with openings in the side wall intended for the introduction of

additives by hand, if tilting devices, chutes, hoppers and similar devices are designed in such a way

that persons cannot climb onto them or fall through. Safety distances to the moving parts shall be

maintained in accordance with EN ISO 13857:2019, Table 2 and Table 4;

— on stand-alone pulpers with a mechanical loading facility, the charging opening is designed so that

no blockages of the loaded material can occur. This can be achieved by providing diverting bars

arranged at an appropriate distance in front of the charging opening. Working platforms at the end

of the charging conveyor shall be designed so that there is no risk of falling onto the conveyor or into

the pulper;

— on stand-alone pulpers with an access door (e.g. to enter with a ladder), allowing whole-body access,

the door shall be so designed that it open outwards only and by means of a special key or by

interlocking the door with the pulper drive (with or without guard locking based on the actual

stopping time) ac
...

SLOVENSKI STANDARD
oSIST prEN 1034-4:2020
01-februar-2020
Varnost strojev - Varnostne zahteve za načrtovanje in konstrukcijo strojev in
opreme za izdelavo in končno obdelavo papirja - 4. del: Razpuščevalniki in
pripadajoče naprave za polnjenje

Safety of machinery - Safety requirements for the design and construction of paper

making and finishing machines - Part 4: Pulpers and their loading facilities

Sicherheit von Maschinen - Sicherheitstechnische Anforderungen an Konstruktion und

Bau von Maschinen der Papierherstellung und Ausrüstung - Teil 4: Stofflöser und deren

Beschickungseinrichtungen

Sécurité des machines - Prescriptions de sécurité pour la conception et la construction

de machines de fabrication et de finition du papier - Partie 4: Triturateurs et leurs

dispositifs d'alimentation
Ta slovenski standard je istoveten z: prEN 1034-4
ICS:
13.110 Varnost strojev Safety of machinery
21.020 Značilnosti in načrtovanje Characteristics and design of
strojev, aparatov, opreme machines, apparatus,
equipment
85.100 Oprema za papirno industrijo Equipment for the paper
industry
oSIST prEN 1034-4:2020 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 1034-4:2020
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oSIST prEN 1034-4:2020
DRAFT
EUROPEAN STANDARD
prEN 1034-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2020
ICS 85.100 Will supersede EN 1034-4:2005+A1:2009
English Version
Safety of machinery - Safety requirements for the design
and construction of paper making and finishing machines -
Part 4: Pulpers and their loading facilities

Sécurité des machines - Prescriptions de sécurité pour Sicherheit von Maschinen - Sicherheitstechnische

la conception et la construction de machines de Anforderungen an Konstruktion und Bau von

fabrication et de finition du papier - Partie 4: Maschinen der Papierherstellung und Ausrüstung - Teil

Triturateurs et leurs dispositifs d'alimentation 4: Stofflöser und deren Beschickungseinrichtungen

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee

CEN/TC 198.

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, 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.

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: Rue de la Science 23, B-1040 Brussels

© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1034-4:2020 E

worldwide for CEN national Members.
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prEN 1034-4:2020 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

Introduction .................................................................................................................................................................... 4

1 Scope .................................................................................................................................................................... 5

2 Normative references .................................................................................................................................... 5

3 Terms and definitions ................................................................................................................................... 7

4 List of significant hazards ............................................................................................................................ 9

5 Safety requirements and/or measures ................................................................................................ 10

5.1 General ............................................................................................................................................................. 10

5.2 Requirements for safety devices ............................................................................................................ 10

5.3 Power transmission elements ................................................................................................................. 10

5.4 Workplaces, access stairs, walkways, passageways ........................................................................ 10

5.5 Falling hazard on pulpers ......................................................................................................................... 10

5.6 Loading facilities on pulpers .................................................................................................................... 13

5.7 Start-up warning devices........................................................................................................................... 14

5.8 Emergency stop devices ............................................................................................................................. 14

5.9 Emptying of the stand-alone pulper/ under machine pulper ...................................................... 15

5.10 Isolation and energy dissipation, prevention of unexpected start-up ..................................... 15

5.11 Control systems and actuators ................................................................................................................ 15

5.12 Integrated lighting ....................................................................................................................................... 17

5.13 Ergonomic principles .................................................................................................................................. 17

5.14 Electrical equipment ................................................................................................................................... 17

5.15 Hydraulic equipment .................................................................................................................................. 17

5.16 Pneumatic equipment ................................................................................................................................ 17

5.17 Noise hazards................................................................................................................................................. 17

5.18 Dangers from hazardous substances .................................................................................................... 17

5.19 Equipment and measures for maintenance and inspection and cleaning ............................... 17

5.20 Hazards generated by material ............................................................................................................... 18

5.21 Powered valves ............................................................................................................................................. 19

6 Verification of compliance with safety requirements and/or protective measures ........... 19

7 Information for use ..................................................................................................................................... 19

7.1 General ............................................................................................................................................................. 19

7.2 Specific information on machinery ....................................................................................................... 19

7.3 Specific information in the instruction handbook ........................................................................... 19

Annex A (informative) Example of a commercially available safety systems for securing

access / rescue lifting device together with examples of fastening device ............................. 21

Annex B (informative) List of significant hazards ........................................................................................... 23

Annex ZA (informative) Relationship between this European Standard and the essential

requirements of Directive 2006/42/EC aimed to be covered ..................................................... 25

Bibliography ................................................................................................................................................................. 28

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prEN 1034-4:2020 (E)
European foreword

This document (prEN 1034-4:2020) has been prepared by Technical Committee CEN/TC 198 Printing

and paper machinery - Safety”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 1034-4:2005+A1:2009.

In comparison with the previous edition, the following technical modifications have been made:

a) Throughout the document, clear differentiation between the different types of pulpers. The term

under machine pulper/ machine integrated pulper has been added (including schematic

representation). The term stand-alone pulper was introduced for differentiation.

b) In 5.5.1: Addition of a requirement regarding maximum distance between pulper wall and walkway

floor; addition of a requirement for means of access and walkways regarding use of corrosion

resistant materials.

c) The requirements for safety-relevant parts of control systems were supplemented and updated

throughout the document; in 5.11.3 Inclusion of a table with an overview of safety functions.

d) A new Clause 5.9 with requirements for the emptying of stand-alone pulpers and under machine

pulpers was added.

e) In 5.19 review of requirements on maintenance, inspection and cleaning requirements: as an

alternative to manholes (previously only required), provision for mounting systems for safe entry

and rescue systems (addition of an example of an entry/rescue system in Annex A), provision of a

separate system for transporting tools when entering the pulper, addition of measures to prevent

the occurrence of hazardous gases, such as appropriate openings, forced ventilation or ventilation

through trash discharge gates.

f) In Clause 7, information on maintenance, inspection and cleaning has been added.

g) Review of Annex ZA.

This document has been prepared under a mandate given to CEN by the European Commission and the

European Free Trade Association, and supports essential requirements of EU Directive(s).

For relationship with EU Directive(s), see informative Annex ZA which is an integral part of this

document.
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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 the 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 or from provisions made in prEN 1034-1:2019, 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 specifies safety requirements.

It is applicable to pulpers and their loading facilities intended for use in paper making as well as for

pulpers used in pulp drying machines and is intended to be used together with prEN 1034-1:2019.

This document deals with all significant hazards, hazardous situations or hazardous events relevant to

pulpers and their loading facilities, when they are used as intended and under conditions of misuse

which are reasonably foreseeable by the manufacturer.

This document is not applicable to pulpers and their loading facilities that have been manufactured

before the date of publication of this standard.
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 (all parts), Safety of machinery - Human body measurements

EN 617:2001+A1:2010, Continuous handling equipment and systems - Safety and EMC requirements for

the equipment for the storage of bulk materials in silos, bunkers, bins and hoppers

EN 618:2002+A1:2010, Continuous handling equipment and systems - Safety and EMC requirements for

equipment for mechanical handling of bulk materials except fixed belt conveyors

EN 619:2002+A1:2010, Continuous handling equipment and systems - Safety and EMC requirements for

equipment for mechanical handling of unit loads

EN 620:2002+A1:2010, Continuous handling equipment and systems - Safety and EMC requirements for

fixed belt conveyors for bulk materials

EN 741:2000+A1:2010, Continuous handling equipment and systems - Safety requirements for systems

and their components for pneumatic handling of bulk materials

prEN 1034-1:2019 , Safety of machinery - Safety requirements for the design and construction of paper

making and finishing machines - Part 1: Common requirements
EN 1496:2017, Personal fall protection equipment - Rescue lifting devices

EN 13023:2003+A1:2010, Noise measurement methods for printing, paper converting, paper making

machines and auxiliary equipment - Accuracy grades 2 and 3

EN 60204-1:2018, Safety of machinery - Electrical equipment - Part 1: General requirements (IEC 60204-

1:2016)
1) Under preparation.
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EN 61511-1:2017 , Functional safety - Safety instrumented systems for the process industry sector -

Part 1: Framework, definitions, system, hardware and application programming (IEC 61511-1:2016)

EN 62061:2005 ,Safety of machinery - Functional safety of safety-related electrical, electronic and

programmable electronic control systems (IEC 62061:2005)

EN IEC 61000-6-2:2019, Electromagnetic compatibility (EMC) - Part 6-2: Generic standards -Immunity

standard for industrial environments

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 12100:2010, Safety of machinery - General principles for design - Risk assessment and risk

reduction (ISO 12100:2010)

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 13849-2:2012, Safety of machinery - Safety-related parts of control systems - Part 2: Validation

(ISO 13849-2:2012)

EN ISO 13854:2019, Safety of machinery - Minimum gaps to avoid crushing of parts of the human body

(ISO 13854:2017)

prEN ISO 13857:2017, Safety of machinery - Safety distances to prevent hazard zones being reached by

upper and lower limbs (ISO/DIS 13857:2017)

EN ISO 14118:2018, Safety of machinery - Prevention of unexpected start-up (ISO 14118:2017)

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)

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)
2) This document is impacted by the amendment EN 61511-1:2017/A1:2017.

3) This document is impacted by the amendments EN 62061:2005/A1:2013, EN 62061:2005/A2:2015 and the

corrigendum EN 62061:2005/Cor.:2010.
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EN ISO 14123-1:2015, Safety of machinery - Reduction of risks to health resulting from hazardous

substances emitted by machinery - Part 1: Principles and specifications for machinery manufacturers (ISO

14123-1:2015)

EN ISO 14123-2:2015, Safety of machinery - Reduction of risk to health from hazardous substances

emitted by machinery - Part 2: Methodology leading to verification procedures
3 Terms and definitions

For the purposes of this document, the terms and definitions given in EN ISO 12100:2010,

prEN 1034-1:2019 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 https://www.iso.org/obp
3.1
pulper

machine that dissolves raw materials such as wood pulp, pulp, recovery stock and waste paper to form

a pumpable defibrated stock suspension to be used for the production of paper, board and tissue

Note 1 to entry: Pulpers can be designed either as stand-alone pulpers, see 3.2, or as drum pulpers, see 3.4.

Pulpers can also be designed as under machine pulpers, see 3.3.
3.2
stand-alone pulper

pulper consisting of a fixed tank and a power-driven rotor to break down the charged raw material - in

bales or in the form of bulk material or loose bulk material -using water
Note 1 to entry: The principle of a rotor pulper is illustrated in Figure 1.
Key
1 drive 4 tank 7 manhole/ access opening
2 discharging pump 5 rotor 8 charging conveyor
3 charging pump/water pump 6 trash discharge gate 9 feeding conveyor
Figure 1 — Pulper with loading facility (example)
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3.3
under machine pulper
machine-integrated pulper

pulper integrated into a paper making and finishing machine (e.g. located in particular below a paper,

board or tissue machine, but also below a slitter rewinder) to pick up the recovery stock or broke

coming from these machines

Note 1 to entry: Figure 2 shows a schematic representation of a under machine pulper.

Key
1 entry possibility for paper web
2 spray pipes for water inflow
3 pulper tank
4 manhole / access opening (position variable, depending on accessibility)
5 discharge pump for accept stock
6 drive
Figure 2 — Example of an under machine pulper
3.4
drum pulper

pulper consisting of a horizontal drum rotating round its horizontal axis in which raw material is

dissolved with the addition of water
Note 1 to entry: The principle of a drum pulper is illustrated in Figure 3.
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prEN 1034-4:2020 (E)
Key
1 entry opening for raw material and water
2 spray pipes for water inflow
3 exit of dissolved pulp through perforation of the drum body
4 discharge pump for accept stock
5 reject discharge
Figure 3 — drum pulper (schematic representation)
3.5
loading facility

machinery such as continuous conveyor, lifting device or a combination of these machines intended to

charge pulpers with the raw material to be dissolved such as pulp, waste paper or recovery stock

3.6
feeding conveyor

continuous conveyor as part of the loading facility defined in 3.4 onto which the raw material to be

dissolved is loaded by means of fork lifts, mechanical shovels or lifting tools
Note 1 to entry: See Figure 1.
3.7
charging conveyor

continuous conveyor as part of the loading facility defined in 3.4, forwarding the raw material to be

dissolved into the pulper
Note 1 to entry: See Figure 1.
4 List of significant hazards

For an overview of all significant hazards dealt with in this document, see Annex B, Table B.1.

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5 Safety requirements and/or measures
5.1 General

Machinery shall comply with the safety requirements and/or 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, e.g. avoidance of sharp edges.

5.2 Requirements for safety devices
5.2.1 The requirements of prEN 1034-1:2019, 5.1 shall be satisfied.

5.2.2 The instruction handbook shall contain instructions for checking the safety devices.

5.3 Power transmission elements

Safety devices for power transmission elements between the drive and rotor or drum of the pulper shall

be selected and designed as specified in prEN 1034-1:2019, 5.2.
5.4 Workplaces, access stairs, walkways, passageways

5.4.1 The requirements of 5.5 of prEN 1034-1:2019 and EN ISO 14122-1:2016, EN ISO 14122-2:2016,

EN ISO 14122-3:2016, EN ISO 14122-4:2016 as well as of 5.4.2, 5.4.3 and 5.6.4 shall be satisfied.

5.4.2 Stairs and walkways on drum pulpers shall be fitted in such a way that in-running nips between

these elements and the drum are avoided. The safety distances specified in prEN 1034-1:2019, 5.4 and

in prEN ISO 13857:2017, Table 2 shall be applied.

5.4.3 Where access is required to parts of the machine, but is prevented or made difficult by the

position of the loading facility, crossovers or passageways shall be provided so that access to the

loading facility is avoided.
5.5 Falling hazard on pulpers
5.5.1 General requirements:

By appropriate design, installation and, if necessary, additional measures against tripping or falling, it

shall be ensured that persons cannot fall into the pulper. Fall-off protections, e.g. at the pulp tank or at

the entry openings of drum pulper shall be at least 1,20 m high (measured from possible standing level)

and designed in such a way that climbing up and falling through are prevented.

The distance between the pulper wall and the stand area at the pulper shall not exceed 0,12 m in order

to prevent tripping or falling.

Corrosion-resistant material should be used for the construction of working platforms, walkways, stairs

and fall-off protections when exposed to moisture in order to prevent risks due to loss of strength of the

supporting elements as a result of expected excessive corrosion.
5.5.2 Danger of falling into stand-alone pulpers and under machine pulpers:

Persons are prevented from falling into the stand-alone pulper and machine integrated pulper, if:

— on stand-alone pulpers with a tank open at the top, the upper edge of the tank is at least 1,20 m

above standing level and the outer pulper walls are designed so that stepping up on them is not

possible. If the upper edge of the tank is lower, an additional fall-off protection shall be provided to

meet the requirements mentioned above, see;
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prEN 1034-4:2020 (E)

— on closed or covered stand-alone pulpers with cover openings, these openings are closed by covers

and, with the cover in open position, are protected by fixed grilles designed so that persons cannot

fall through. Covers shall be provided with side handles as well as adequate means for securing

them in the open position to prevent unexpected or unintended sudden closing ;

— on stand-alone pulpers with side openings for manually feeding stock mixtures, dump equipment,

chutes or similar facilities are designed so that persons cannot climb onto them or fall through, for,

parts, the safety distances of prEN ISO 13857:2017, Table 2 and Table 4 shall be applied on stand-

alone pulpers with a mechanical loading facility, the charging opening is designed so that no

blockages of the loaded material can occur. This can be achieved by providing diverting bars

arranged at an appropriate distance in front of the charging opening; working platforms at the end

of the charging conveyor shall be designed so that there is no risk of falling onto the conveyor or

into the pulper;

— on stand-alone pulpers with an access door allowing whole-body access the door is to design to

open outwards and by means of a key access interlock or by interlocking (with or without guard

locking based on the actual stopping time) according to EN ISO 14119, so that the pulper is at stand

still or at hold to run function if the door is open;

— the safety related interlocking function shall meet at least EN ISO 13849-1:2015, PL d or

EN 62061:2005, SIL 2;

— the hold to run function if installed shall meet at least EN ISO 13849-1:2015, PL c or

EN 62061:2005, SIL 1;

— on stand-alone pulpers and under machine pulpers with manual or gravity loading (e.g. web

unwinding from a drum), the dimensions given in Figures 4 and 5 are adhered to;

— on stand-alone pulpers where the charging conveyor is regularly walked on for operational reasons

(e.g. for the removal of cores on machinery with reel splitting machines), protection against falling,

adjustable if required, is provided in front of the feeding opening and access to the conveyor is

safeguarded by an interlocking gate; the interlocking system shall be designed so that access is

possible only with the conveyor switched off and the protection against falling is in its safeguarding

position. The control system of the interlocking device shall comply with at least

EN ISO 13849-1:2015, PL c or EN 62061:2005, SIL 1;

— on under machine pulpers located below paper making, board making or tissue making machines

for the recovery of waste (recovery stock) and which have a feed opening with a hatch, the fall of

persons into the pulper is prevented, if in front of this hatch an interlocking guard with guard

locking in accordance with EN ISO 14119:2013 is provided so that access is only possible with the

hatch closed. The control system of the interlocking device shall meet at least

EN ISO 13849-1:2015, PL c or EN 62061:2005, SIL 1. The hatch shall be designed or safeguarded in

such a way that crushing hazards are avoided in accordance with prEN 1034-1:2019, 5.3 and

EN ISO 13854:2019.

NOTE The function of the guard could alternatively be realized by a corresponding design of the cover.

5.5.3 Machine-integrated pulpers are protected by guards in such a way that no entry is possible.

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Key
1 fixed hood with side opening
2 movable flap with limited opening width
3 fixed side barriers with side opening in the lower section
4 floor (standing level)

Figure 4 — Fall-off protection at discharge openings for waste or recovery stock at stand-alone

pulpers/ under machine pulpers
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Figure 5 — Fall-off protection at an under machine pulper underneath the Pope reel

5.6 Loading facilities on pulpers
5.6.1 For safe loading of pulpers, suitable devices
...

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