SIST EN 12355:2003

SLOVENSKI STANDARD
01-julij-2003
Stroji za predelavo hrane - Stroji za odstranjevanje kože - Varnostne in higienske
zahteve
Food processing machinery - Derinding-, skinning- and membrane removal machines -
Safety and hygiene requirements
Nahrungsmittelmaschinen - Entschwartungs-, Enthäutungs- und Entvliesmaschinen -
Sicherheits- und Hygieneanforderungen
Machines pour les produits alimentaires - Machines a découenner, éplucher et peler -
Prescriptions relatives a la sécurité et a l'hygiene
Ta slovenski standard je istoveten z: EN 12355:2003
ICS:
67.260 Tovarne in oprema za Plants and equipment for the
živilsko industrijo food industry
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 12355
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2003
ICS 67.260
English version
Food processing machinery - Derinding-, skinning- and
membrane removal machines - Safety and hygiene
requirements
Machines pour les produits alimentaires - Machines à Nahrungsmittelmaschinen - Entschwartungs-, Enthäutungs-
découenner, éplucher et peler - Prescriptions relatives à la und Entvliesmaschinen - Sicherheits- und
sécurité et à l'hygiène Hygieneanforderungen
This European Standard was approved by CEN on 21 November 2002.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12355:2003 E
worldwide for CEN national Members.

Contents
page
Foreword.3
Introduction .4
1 Scope .4
2 Normative references .8
3 Terms and definitions.9
4 List of hazards.10
4.1 General.10
4.2 Mechanical hazards .11
4.3 Electrical hazards .14
4.4 Hazards generated by loss of stability .14
4.5 Hazard generated by noise .14
4.6 Hazards from non-compliance with ergonomic principles .14
4.7 Hazards from non-compliance with hygienic principles .14
5 Safety requirements and/or measures .14
5.1 General.14
5.2 Mechanical hazards .15
5.3 Electrical hazards .26
5.4 Hazards from loss of stability.28
5.5 Noise reduction.28
5.6 Ergonomic requirements .28
5.7 Hygiene and cleaning .28
6 Verification of safety and hygiene requirements and/or measures.30
7 Information for the user .32
7.1 Instruction Handbook.32
7.2 Operator training.33
8 Marking .34
Annex A (normative)  Noise test code for derinding-, skinning- and membrane removal machines
(grade 2).35
Annex B (normative)  Design principles to ensure the cleanability of derinding-, skinning- and
membrane removal machines .37
Annex C (normative)  Common hazards for food processing machines and reduction requirements
applicable to derinding-, skinning- and membrane removal machines.42
Annex ZA (informative)  Relationship of this document with EC Directives.44
Bibliography .45
Foreword
This document (EN 12355:2003) has been prepared by Technical Committee CEN/TC 153 “Food processing
machinery - Safety and hygiene specifications", 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 August 2003, and conflicting national standards shall be withdrawn at the latest by
August 2003.
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.
It is one of a series of standards for meat processing machinery, in compliance with EN 1672-2 and annex C.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,
Slovakia, Spain, Sweden, Switzerland and the United Kingdom.
Introduction
This European Standard relates to:
derinding machines with tooth roll, hold down roller and blade device;
skinning- and membrane removal machines with transport- and stripper roll as well as a blade device.
1 Scope
1.1 This European Standard applies to design, manufacturing, installation, transportation, electrical equipment
and cleaning of derinding-, skinning-, and membrane removal machines (see Figures 1 to 5).
The machines described in this standard are used for derinding-, skinning- and membrane removal of meat and
fish by cutting at a blade device.
Derinding-, skinning-, and membrane removal machines for domestic purposes and table-top machines are not
covered by this standard.
This standard only applies to machines which are manufactured after the date of issue of this standard.
1.2 This standard covers the following types of machines:
Open derinding machines with infeed table and a distance between the floor and the surface of the infeed
table from 800 mm to 1 050 mm.
Tooth form of the tooth roll:
Depth < 5,0 mm
Pitch < 6,5 mm
(see Figures 1 and 2)
Key Key
1 Tooth roll/ 6 ON/OFF Switch, cover 1 Round product 4 Tooth roll
Transport roll 7 Foot switch 2 Cutting thickness < 5 mm 5 Blade holder
2 Blade 8 Drive 3 Infeed table 6 Blade
3 Discharge table 9 Locking device 7 Rind
4 Blade holder 10 Table height 8 Stripper comb
5 Infeed table
Figure 1 — Derinding-, skinning- and membrane   Figure 2 — System of an open derinding machine
removal machine
Automatic derinding machine with infeed, hold down, and outfeed device and a distance between the floor and
the surface of the infeed device, e.g. conveyor belt between 800 mm and 1 050 mm.
Tooth form of the tooth roll:
Depth <  5,0 mm
Pitch < 12,0 mm
Hold down roller diameter 175 mm to 240 mm.
(see Figures 3 and 4)
Key Key
1 Outfeed conveyor belt 5 Blade 1 Hold-down rollers 5 Stripper comb or
2 Mobile guard 6 Tooth or conveyor roll 2 Infeed conveyor belt stripper roll
3 Hold-down rollers 7 Infeed conveyor 3 Product 6 Blade
4 Blade holder 8 Drive 4 Tooth or conveyor roll 7 Blade holder
8 Outfeed conveyor
Figure 3 — Automatic Derinding- and membrane Figure 4 — System of an automatic derinding- and
removal machine membrane machine
Open skinning- and membrane removal machine with infeed table and a distance between the floor and the
surface of the infeed table between 800 mm and 1 050 mm.
Groove form of the transport roller:
Depth < 2,0 mm
Pitch < 2,5 mm
(see Figures 1 and 5)
Key
1 Infeed table 5 Blade holder
2 Product 6 Membrane
3 Cutting 7 Transport roll
Thickness < 0,5 mm 8 Stripper roll
4 Blade
Figure 5 — System of a membrane removal machine
Derinding-, skinning- and membrane removal machines consist mainly of a machine frame, tooth roll with stripper
comb, hold down roller with stripper rake, transport roll with stripper roll and air jet cleaning blade device and
electrical, electronic, or pneumatic components, depending on the machine type.
Derinding-, skinning- and membrane removal machines can e.g. be equipped with a:
infeed and outfeed table;
infeed- and outfeed conveyor belts;
blade device;
double blade;
hold down device, (e.g. hold down rollers, belts or fingers);
circular knives inside or instead of hold down rollers;
stripper comb/stripper roll/stripper rake.
Derinding-, skinning- and membrane removal machines can be mobile (see Figures 1 and 3).
1.3 Intended use
The intended uses of the machines are described in clause 7 of this standard, Information for use.
The product (raw meat or raw fish) with a weight < 15 kg which is to be processed is either fed by hand or by an
infeed device (e.g. infeed conveyor belt) and a hold down device carried to the tooth or transport roller. Using open
derinding-, skinning- and membrane removal machines, the product is pressed by hand against the blade device
and the rind, the skin or the membrane is cut off by the blade.
1.4 Not intended use
A not intended use is e.g.:
the wrong installation of a derinding-, skinning- and membrane removal machine;
the processing of flat products on open derinding machines;
working on open derinding-, skinning- and membrane removal machines without using the gloves which the
manufacturer recommends;
manipulation of interlocking systems on safety devices;
using of cleaning- and disinfection detergents, which are not recommended by the manufacturer in the
instructions for use.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For
dated references, subsequent amendments to or revisions of any of these publications apply to this European
Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the
publication referred to applies (including amendments).
EN 292-2:1991, Safety of machinery – Basic concepts, general principles for design – Part 2: Technical principles
and specifications.
EN 614-1, Safety of machinery – Ergonomic design principles – Part 1: Terminoloy and general principles.
EN 953:1997, Safety of machinery – Guards-General requirements for the design and construction of fixed and
movable guards.
EN 954-1:1996, Safety of machinery – Safety-related parts of control systems – Part 1: General principles for
design.
EN 1005-1, Safety of machinery – Human physical performance
...