Bsi bs en 12267 2003 + a1 2010

This European Standard covers the following types of machines: Circular saw machines with a feed table and a fixed product pusher  The distance "A" from the floor to the top surface of

National foreword

This British Standard is the UK implementation of

EN 12267:2003+A1:2010 It supersedes BS EN 12267:2003 which is withdrawn

The start and finish of text introduced or altered by amendment is indicated in the text by tags Tags indicating changes to CEN text carry the number of the CEN amendment For example, text altered

by CEN amendment A1 is indicated by !"

The UK participation in its preparation was entrusted by Technical Committee MCE/3, Safeguarding of machinery, to Subcommittee MCE/3/5, Food industry machines

A list of organizations represented on this subcommittee can be obtained on request to its secretary

This publication does not purport to include all the necessary provisions of a contract Users are responsible for its correct application

Compliance with a British Standard cannot confer immunity from legal obligations.

This British Standard was

published under the authority

of the Standards Policy and

EUROPÄISCHE NORM May 2010

ICS 67.260 Supersedes EN 12267:2003

English Version

Food processing machinery - Circular saw machines - Safety

and hygiene requirements

Machines pour les produits alimentaires Scies circulaires

-Prescriptions relatives à la sécurité et à l'hygiène

Nahrungsmittelmaschinen - Kreissägemaschinen - Sicherheits- und Hygienebestimmungen

This European Standard was approved by CEN on 9 January 2003 and includes Amendment 1 approved by CEN on 9 April 2010 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 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 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom

EUROPEAN COMMITTEE FOR STANDARDIZATION

C O M I T É E U R O P É E N D E N O R M A L I S A T I O N

E U R O P Ä I S C H E S K O M I T E E FÜ R N O R M U N G

Management Centre: Avenue Marnix 17, B-1000 Brussels

2

Contents

page

Foreword 3

Introduction 4

1 Scope 5

2 Normative references 7

3 Terms and definitions 8

4 List of hazards 8

4.1 General 8

4.2 Mechanical hazards 8

4.3 Electrical hazards 10

4.4 Hazard from loss of stability 10

4.5 Noise hazard 10

4.6 Hazards from non-compliance with ergonomic principles 11

4.7 Hazards from non-compliance with hygiene principles 11

5 Safety requirements and/or measures 11

5.1 General 11

5.2 Mechanical hazards 11

5.3 Electrical hazards 14

5.4 Hazard from loss of stability 16

5.5 Noise hazard 17

5.6 Ergonomic requirements 17

5.7 Hygiene and cleaning 17

6 Verification of safety requirements and/or measures 19

7 Information for use 20

7.1 General 20

7.2 Operating instruction 20

7.3 Operator training 22

8 Marking 22

Annex A (normative) Noise test code for circular saw machines (grade 2) 24

Annex B (normative) Design principles to ensure cleanability of circular saw machines 26

Annex C (normative) Common hazards for food processing machines and reduction requirements applicable to circular saw machines 31

Annex ZA (informative) !Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC" 33

Bibliography 34

Foreword

This document (EN 12267:2003+A1:2010) has been prepared by Technical Committee CEN/TC 153 “Machinery intended for use with foodstuffs and feed”, the secretariat of which is held by DIN

It has been prepared by Working Group 2 "Meat Processing Machinery" of CEN/TC 153

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 2010, and conflicting national standards shall be withdrawn at the latest

by November 2010

This document includes Amendment 1, approved by CEN on 2010-04-09

This document supersedes EN 12267:2003

The start and finish of text introduced or altered by amendment is indicated in the text by tags!"͘

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights

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."

!deleted text"

According to the CEN/CENELEC Internal Regulations, the national standards organizations 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom

4

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 and hazardous events are covered are indicated in the scope of this document

When provisions of this type C standard are different from those which are stated in type A or B standards, the provisions of this type C standard take precedence over the provisions of the other standards, for machines that have been designed and built according to the provisions of this type C standard."

1 Scope

This European Standard specifies requirements for the design and manufacturing of circular saw machines (see Figures 1 and 2)

The machines covered by this European Standard are used to cut bone and meat

The circular saw machines covered by this European Standard do not include circular saw machines for processing

of wood and similar materials and the requirements of EN 1870-1 do not apply

Circular saw machines for domestic use are not included in this European Standard

This European Standard applies only to machines which are manufactured after the date of issue of this European Standard

This European Standard covers the following types of machines:

Circular saw machines with a feed table and a fixed product pusher

 The distance "A" from the floor to the top surface of the feed table is from 800 mm to 1050 mm The saw blade diameter is between 350 mm and 400 mm (see Figure 1)

 Circular saw machines installed in a cutting line (e.g conveyor belt or roller conveyor), e.g with a protective component which can be lifted on the feed and discharge side The saw blade diameter is between 350 mm and 400 mm (see Figure 2)

Saw blade 350 mm - 400 mm diameter

Interlocking switch for chip pan

Casing Chip pan

Figure 1 — Circular saw machine with machine base Figure 2 — Circular saw machine in cutting line

Circular saw machines comprise a machine base, a fixed, foldable feed table, a product pusher, a protective hood which can be lifted, a saw blade, a drive and electrical components, depending on machine type

Circular saw machines with a machine base can be wheel-mounted (see Figure 1)

!deleted text"

!This European Standard deals with all significant hazards, hazardous situations and events relevant to circular saw machines, when they are used as intended and under conditions of misuse which are reasonably foreseeable

by the manufacturer (see Clause 4)

This European Standard deals with the hazards which can arise during commissioning, operation, cleaning, use, maintenance and decommissioning of the machine."

On floor-type circular saw machines (see Figure 3) the product to be cut is placed by hand onto the feed table and pushed against the cutting zone of the saw blade by means of the product pusher and sawed

On circular saw machines which are installed in a cutting line (see Figure 4) the product to be cut is pushed by hand via the conveyor belt or roller conveyor against the cutting zone of the saw blade and sawed

2 Normative references

!The following referenced documents are indispensable for the application 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 614-1, Safety of machinery — Ergonomic design principles — Part 1: Terminology and general principles

EN 953:1997, Safety of machinery — Guards — General requirements for the design and construction of fixed and

movable guards

EN 1005-1, Safety of machinery — Human physical performance — Part 1: Terms and definitions

EN 1005-2, Safety of machinery — Human physical performance — Part 2: Manual handling of machinery and

component parts of machinery

EN 1005-3, Safety of machinery — Human physical performance — Part 3: Recommended force limits for

machinery operation

EN 1088:1995, Safety of machinery — Interlocking devices associated with guards — Principles for design and

selection

EN 1672-2:2005, Food processing machinery — Basic concepts — Part 2: Hygiene requirements

EN 60204-1:2006, Safety of machinery — Electrical equipment of machines — Part 1: General requirements (IEC

60204-1:2005, modified)

EN 60529, Degrees of protection provided by enclosures (IP code) (IEC 60529:1989)

EN ISO 3744, Acoustics — Determination of sound power levels of noise sources using sound pressure —

Engineering method in an essentially free field over a reflecting plane (ISO 3744:1994)

EN ISO 4871, Acoustics — Declaration and verification of noise emission values of machinery and equipment —

(ISO 4871:1996)

EN ISO 11204, Acoustics — Noise emitted by machinery and equipment — Measurement of emission sound

pressure levels at a work station and at other specified positions — Method requiring environmental corrections (EN ISO 11204:1995)

EN ISO 11688-1, Acoustics — Recommended practice for the design of low-noise machinery and equipment —

Part 1: Planning (ISO/TR 11688-1:1995)

EN ISO 12100-1:2003, Safety of machinery — Basic concepts, general principles for design — Part 1: Basic

terminology, methodology (ISO 12100-1:2003)

EN ISO 12100-2:2003, Safety of machinery — Basic concepts, general principles for design — Part 2: Technical

principles and specifications (ISO 12100-2:2003)

EN ISO 13849-1:2008, Safety of machinery — Safety-related parts of control systems — Part 1: General principles

for design (ISO 13849-1:2006)

EN ISO 13857:2008, Safety of machinery — Safety distances to prevent hazard zones being reached by the upper

and lower limbs (ISO 13857:2008)

8

3 Terms and definitions

!For the purposes of this document, the terms and definitions given in EN ISO 12100-1:2003 and the following apply."

3.1

movable protective hood

movable device for covering the saw blade at the cutting zone and on the discharge side above the feed level

Before using this standard it is important to carry out a risk assessment of the cutting machine to check that it has the hazards identified in this clause

4.2 Mechanical hazards

4.2.1 Circular saw machine with feed table and fixed product pusher (see Figure 3)

4.2.1.1 Area of saw blade

 Zone 1

Saw blade at the cutting zone, above the feed table

Hazard of cutting or severing fingers

 Zone 2

Saw blade outside the cutting zone, above the feed table

Hazard of cutting or severing fingers

 Zone 3

Saw blade outside the cutting zone, below the feed table

Hazard of cutting or severing fingers

4.2.1.2 Area of drive mechanism

 Zone 4

Saw blade drive

Crushing hazard to fingers or hand

4.2.2 Circular saw machine in cutting line (see Figure 4) - Area of saw blade

 Zone 1

Saw blade at the cutting zone, above the feed plane

Hazard of cutting or severing fingers

 Zone 2

Saw blade outside the cutting zone, above the feed plane

Hazard of cutting or severing fingers

 Zone 3

Saw blade outside the cutting zone, below the feed plane

Hazard of cutting or severing fingers

Figure 3 — Floor type circular saw machine Figure 4 — Circular saw machine in cutting line

- danger zones - danger zones

4.3 Electrical hazards

4.3.1 Direct or indirect contact with life parts

Hazard from electrical shock to the body

4.3.2 Electrical components with insufficient safety level

Hazards arising from malfunction of electrical components

Hazards from the effect of failure/unexpected stoppage on other elements in a cutting line

4.4 Hazard from loss of stability

 Zone 5

Wheel-mounted circular saw machines (see Figure 3)

Impact or squeezing hazard to the body if machine topples over

4.5 Noise hazard

Noise can lead to

 permanent loss of hearing,

 ringing in the ears (tinitus),

 fatigue, stress etc

4.6 Hazards from non-compliance with ergonomic principles

 Unhealthy body posture or excessive physical effort

 Inadequate consideration of human hand/arm or foot/leg anatomy during machine design

Hazard of injury to the body

4.7 Hazards from non-compliance with hygiene principles

 Microbial causes

Spoilage of meat product

Damage to health of the consumer through food poisoning

Infection of the operator

 Chemical causes

Contamination of foodstuff through residues of cleaning and disinfecting agents causing harm to consumer

 Physical causes

Entrapped items originating from raw materials, machine parts or other sources causing harm to consumer

5 Safety requirements and/or measures

5.1 General

Circular saws for meat and bone shall comply with the safety requirements and/or protective measures of this clause and annex C In addition, they shall be designed according to the principles of !EN ISO 12100" for hazards relevant but not significant, which are not dealt with by this document (e.g sharp edges)

!For hazards which are to be reduced by the application of the type B-standards such as EN 614-1, EN 953,

EN 1005-3, EN 1088, EN 60204-1, EN 60529, EN ISO 12100, EN ISO 13849-1 and EN ISO 13857, the manufacturer shall carry out a risk assessment to establish the requirements of the type B-standard This specific risk assessment shall be part of the general risk assessment of the machine."

Where the means of reducing the risk is by the physical arrangement or positioning of the installed circular saw the manufacturer shall include in the Information for use a reference to the reduction means to be provided, and to any limiting value of the requirement, and, if appropriate, to the means of verification

Where the means of reducing the risk is by a safe system of working the saw, the manufacturer shall include in the information for use details of the system and of the elements of training required by the operating personnel

5.2 Mechanical hazards

5.2.1 Circular saw machines with feed table and fixed product pusher

5.2.1.1 Protection of saw blade



12

A movable product pusher with a handle shall be permanently fixed to the protective hood of the saw blade The product pusher shall be designed so that it automatically falls back into its protective position by its own dead weight It shall not be possible for the pusher to make contact with the cutting-edge of the saw blade

The distance "A1“ between product pusher in protective position and feed table shall be < 6 mm (see Figure 5)

If the protective hood with the product pusher is removable it shall be interlocked

The interlocking system of the protective hood shall conform to the requirements described in 5.2.1.2

After actuation of the interlocking switch of the protective hood the blade should come to a standstill as soon as is possible, but the time taken shall not exceed 4 s

Key

1

2

Automatically falls back by its own weight

Protective hood fixed or interlocked

1

2

Fixed protection Closed machines casing

Figure 5 — Material pusher/protective hood Figure 6 — Protection bar

!Fixing systems for fixed guards or for demountable parts of the machine casing (i.e designed as fixed guards) shall remain attached to the guards or to the machine when the guards are removed."

5.2.1.2 Interlocking devices

!The interlocking system shall comply with 4.2.1 of EN 1088:1995, and the safety related parts of the control system shall present at least a performance level “c” in accordance with EN ISO 13849-1:2008."

The interlocking device shall be built inside of the machine housing in order to

 fulfil hygienic requirements,

 protect against mechanical damages,

 protect against the effects of cleaning and disinfection materials,

 protect against the effects of cleaning fluids (water),

 protect against defeating by simple methods,

and comply with 5.7 of EN 1088:1995

In the instruction handbook, the manufacturer shall indicate the need for regular verification of the interlocking

devices, and for the user to determine the frequency of verification depending upon the usage of the machine

5.2.2 Circular saw machine in cutting line

If the protective hood is removable, it shall be interlocked The saw blade shall come to a standstill within 4 s after actuation of the interlocking switch of the protective hood

For requirements relating to the interlocking system of the removable protective hoods, see 5.2.1.2

Key

For requirements relating to the interlocking system of the chip pan, see 5.2.1.2

The electrical equipment shall comply with EN 60204-1 with the following qualifications

5.3.2 Stopping function of switching devices

The stopping function of switching devices shall be in accordance with 9.2.2, category 0 of

!EN 60204-1:2006"

Circular saw machines intended for use in a cutting line shall be provided with a means to visually or audibly warn

of it ceasing to function under the operation of a safety device, or, shall be fitted with a means capable of interrupting the electrical supply to other elements in the cutting line Details shall be included in the Information for use

5.3.3 Emergency stop-device

!In general circular saw machines do not require an emergency stop device Nevertheless, if the risk assessment

to be carried out by the manufacturer results in the conclusion that such a device would reduce the stopping time, the machine shall be fitted with an emergency stop device

If no emergency stop device is fitted, the normal OFF switch shall be easily reachable from the operator position."

5.3.4 Protection against water ingress

 on the machine,

 on the control box on the machine,

 on the control box located in the process room

 IP X3 Internal electrical operating components

 in the machine with enclosed housing with the degree of protection IP X5 and open lower surface Protection against direct and indirect impact of a water jet shall be assured

 IP X2 Internal electrical operating components

 in a machine with completely enclosed housing with the degree of protection IP X5 Protection against condensate water shall be provided

 in the control box enclosure

 IP X0 Internal electrical operating components

 in a machine with completely enclosed housing with the degree of protection IP X5 Protection against condensate water shall be provided, and the safety of fingers and the back of hand be assured

5.3.4.2 Hoods

Ingress of water into the external electrical operating components shall be prevented This can be achieved e.g by the following measures:

 the electrical operating components shall be covered by hoods, and,

 a statement shall be included in the instruction handbook

NOTE It is not intended that circular saw machines are cleaned with pressurized water However, it is difficult to guarantee that this method will never be used in practice, and the requirements in this clause are included to reduce electrical risks

Hoods covering the external operating components may be lifted for actuating ON and OFF switches Hoods shall not, when closed, restrict the use of the OFF switch (see Figure 9) When using membrane switches or similar systems, no hoods are needed if the membrane switch or similar systems are suitable for cleaning with pressurized water

Protection hood (OFF)

Figure 9 — ON /- and OFF switch with hood

5.3.5 ON and OFF-switch

On circular saw machines, ON and OFF-switches shall be provided The switches should be arranged on the operator side of machines (see Figure 1) The ON-switch shall be protected against unintentional switch-on (e.g by protective collar)

5.3.6 !Safety requirements related to electromagnetic phenomena"

!The machines shall have sufficient immunity from electromagnetic disturbances to enable them to operate safely as intended and not fail to danger when exposed to the levels and types of disturbances intended by the manufacturer

The manufacturer of the machines shall design, install and wire the equipment and sub-assemblies taking into

account the instructions of the suppliers of these sub-assemblies."

5.3.7 Wheel-mounted circular saw machines

The instruction handbook for wheel-mounted circular saw machines shall specify that

 the machine shall be switched off and the main plug pulled before being moved, and

 the electrical supply cable shall not be damaged when the machine is being moved

The machine shall be provided with handles or similar lifting means at suitable places for use in moving it, and information concerning their positions shall be included in the Instructions for use

5.4 Hazard from loss of stability

Circular saw machines shall be designed not to roll, slip, or tip over under normal operating conditions

When floor-type circular saw machines are not fixed to the floor, sufficient inherent tilt stability shall be ensured, e.g by the design of the machine, and the relative positions of the centre of gravity and the wheels and base position

Wheel-mounted machines shall be equipped with e.g 2 support rollers (or 2 legs) and 2 pivot castors with locking devices to prevent them rolling and/or turning

The manufacturer shall give information on mounting e.g relating to the use of the locking device, in the instruction handbook

Machines tested in accordance with Table 1 shall not roll, slip or start tipping over at their location

5.5 Noise hazard

Noise reduction at the design stage

When designing circular saw machines for food processing, the information and technical measures to control noise at source given in EN ISO 11688-1 shall be taken into account

The most important causes for generation of airborne sound at these machines are

 vibration of moving parts

 air current of saw blade

 condition of saw blade

The success of the applied noise reduction measures is assessed on the basis of the actual noise emission values

(see clause 6 and annex A) in relation to other machines of the same family

5.6 Ergonomic requirements

Attention shall be paid to the ergonomic requirements described in !4.8 of EN ISO 12100-2:2003" as well as in

EN 614-1, EN 1005-1, EN 1005-2 and EN 1005-3 Any information for the user which is relevant for achieving the ergonomic objectives, shall be contained in the Instruction Handbook

5.7 Hygiene and cleaning