SIST EN 13570:2005+A1:2010
(Main)Food processing machinery - Mixing machines - Safety and hygiene requirements
Food processing machinery - Mixing machines - Safety and hygiene requirements
This European Standard specifies safety and hygiene requirements to minimise the hazards which can arise during the commissioning, the use and the maintenance of mixing machines and their accessories intended to be used in sausage kitchens and industrial operations. This European Standard deals with all significant hazards, hazardous situations and events relevant to mixing machines, when they are used !as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer. This European standard is not applicable to mixing machines which are manufactured before the date of publication of this European Standard by CEN. This European Standard covers the following types of mixing machines: - Mixing machines with a tilting container, one or several mixing shafts - Mixing machines with a stationary mixing container, front face or bottom discharge opening - Mixing machines with a container and loading device - Mixing machines with a container, mixing shaft(s), screw conveyor and loading device The mixing machines are constructed of a machine frame, a trough-shaped mixing container, one or several mixing shafts, an associated drive and electrical, hydraulic and pneumatic components, depending on machine type. The mixing shaft can be equipped with wings, screws, rods, paddles or the like. Mixing machines may be equipped e. g. with - cover over the top of the mixing container, - pipe connections for gases, steam, water or vacuum, protective hood over the front face discharge opening, - lifting devices for mixing shaft, - loading device, - screw conveyor at the discharge opening.
Nahrungsmittelmaschinen - Mischmaschinen - Sicherheits- und Hygieneanforderungen
Diese Europäische Norm legt Anforderungen an die Konstruktion und Herstellung von Meng- und Mischmaschinen (siehe Bild 1) fest. Sie werden im folgenden nur als Mischmaschinen bezeichnet. Die von dieser Norm erfaßten Maschinen werden zum Mischen von frischem oder gefrorenem Fleisch, Fleischprodukten und Fisch verwendet. Mischmaschinen für den Hausgebrauch werden von dieser Norm nicht abgedeckt. Diese Norm gilt nur für Maschinen, die nach dem Ausgabedatum dieser Norm hergestellt werden.
Machines pour les produits alimentaires - Malaxeurs - Prescriptions relatives à la sécurité et à l'hygiène
1.1 La présente Norme européenne spécifie les prescriptions relatives à la sécurité et l’hygiène pour minimiser les phénomènes dangereux qui peuvent survenir durant la mise en service, l’utilisation et la maintenance des malaxeurs et de leurs accessoires destinés à être utilisés dans les charcuteries et les entreprises industrielles.
La présente Norme européenne traite tous les phénomènes dangereux significatifs, les situations et les événements dangereux associés aux malaxeurs, !lorsqu’ils sont utilisés normalement et dans les conditions de mauvaise utilisation raisonnablement prévisibles par le fabricant (voir Article 4)".
La présente Norme européenne ne s’applique pas aux malaxeurs fabriqués avant la date de publication de la présente Norme européenne par le CEN.
1.2 La présente Norme européenne concerne les types de malaxeurs suivants :
- malaxeurs avec cuve basculante, un ou plusieurs arbres mélangeurs ;
- malaxeurs avec cuve mélangeuse fixe, orifice d’évacuation frontal ou inférieur ;
- malaxeurs avec cuve et système de chargement ;
- malaxeurs avec cuve, arbre(s) mélangeur(s), vis transporteuse et système de chargement.
Les malaxeurs sont composés d’un bâti, une cuve mélangeuse en forme d’auge, un ou plusieurs arbres mélangeurs, un système d’entraînement associé et des composants électriques, hydrauliques et pneumatiques en fonction du type de machine.
L’arbre mélangeur peut être équipé de pales, de vis, de tiges, d’aubes ou composants équivalents.
Les malaxeurs peuvent être équipés par exemple :
- d’un couvercle sur le haut de la cuve mélangeuse ;
- de raccords pour les gaz, la vapeur, l’eau ou le vide ;
- d’un capot de protection sur l’orifice d’évacuation frontal ;
- de dispositifs de levage pour l'arbre mélangeur ;
- d’un système de chargement ;
- d’un convoyeur à vis au niveau de l’orifice d’évacuation.
Stroji za predelavo hrane - Mešalni stroji - Varnostne in higienske zahteve (vključno z dopolnilom A1)
Ta evropski standard določa varnostne in higienske zahteve za zmanjševanje nevarnosti, ki lahko nastanejo med zagonom, uporabo in vzdrževanjem mešalnih strojev in njihovega pribora, ki so namenjeni za uporabo v kuhinjah za izdelavo klobas in industrijskih operacijah. Ta evropski standard obravnava velike nevarnosti, nevarne situacije in primere, ki se nanašajo na mešalne stroje, kadar se uporabljajo !kot predvideno in pod pogoji napačne uporabe, ki jih razumno predvidi proizvajalec. Ta evropski standard ne velja za mešalne stroje, ki so proizvedeni pred datumom, ko je CEN objavil ta evropski standard. Ta evropski standard zajema naslednje vrste mešalnih strojev: - mešalni stroji z nagibno posodo, eno ali več mešal; – mešalni stroji s stacionarno mešalno posodo, odprtina na sprednji strani ali na dnu; – mešalni stroji s posodo in napravo za polnjenje; – mešalni stroji s posodo, mešalom ali mešali, vijačnim transporterjem in napravo za polnjenje. Mešalni stroji so zgrajeni iz ogrodja stroja, mešalne posode v obliki korita, enega ali več mešal, pripadajočega pogona in električnih, hidravličnih in pnevmatskih sestavnih delov, glede na vrsto stroja. Mešalo ima lahko krilca, vijake, palice, pedala ali podobno. Mešalni stroji so lahko opremljeni npr. s/z – pokrovom čez vrh mešalne posode, - cevnimi priključki za pline, paro, vodo ali vakuum, varovalnim okrovom čez odprtino za odvajanje na sprednji strani, - napravami za dvigovanje mešala, - napravo za polnjenje, - vijačnim transporterjem na odprtini za odvajanje.
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Nahrungsmittelmaschinen - Mischmaschinen - Sicherheits- und HygieneanforderungenMachines pour les produits alimentaires - Malaxeurs - Prescriptions relatives à la sécurité et à l'hygièneFood processing machinery - Mixing machines - Safety and hygiene requirements67.260Tovarne in oprema za živilsko industrijoPlants and equipment for the food industryICS:Ta slovenski standard je istoveten z:EN 13570:2005+A1:2010SIST EN 13570:2005+A1:2010en,fr,de01-oktober-2010SIST EN 13570:2005+A1:2010SLOVENSKI
STANDARD
SIST EN 13570:2005+A1:2010
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 13570:2005+A1
June 2010 ICS 67.260 Supersedes EN 13570:2005English Version
Food processing machinery - Mixing machines - Safety and hygiene requirements
Machines pour les produits alimentaires - Malaxeurs - Prescriptions relatives à la sécurité et à l'hygiène
Nahrungsmittelmaschinen - Mischmaschinen - Sicherheits-und Hygieneanforderungen This European Standard was approved by CEN on 25 March 2005 and includes Amendment 1 approved by CEN on 6 May 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
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13570:2005+A1:2010: ESIST EN 13570:2005+A1:2010
EN 13570:2005+A1:2010 (E) 2 Contents Page Foreword .4Introduction .51Scope .62Normative references .73Terms and definitions .94List of significant hazards . 105Safety and hygiene requirements and/or protective measures . 136Verification of safety and hygiene requirements and/or protective measures . 287Information for use . 30Annex A (normative)
Noise test code for mixing machines (grade 2) . 33Annex B (normative)
Design principles to ensure cleanability of mixing machines . 35Annex C (normative)
Common hazards for food processing machines and reduction requirements applicable to mixing machines . 40Annex ZA (informative)
!Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC" . 42Bibliography . 43
Figures Figure 1 — Components of a mixing machine . 7 Figure 2 — Danger zones on mixing machines . 10 Figure 3 — Mixing machines with a cover at the mixing container - safety dimensions . 15 Figure 4 — Mixing machine with open mixing container, mechanical bar, light barrier
and interlocking step at the operator side – safety dimensions . 17 Figure 5 — Mixing machine with open mixing container, protective grid and fixed step
at the operator side – safety dimensions . 18 Figure 6 — Discharge outlet at the mixing machine – protective hood . 18 Figure 7 — Safety device for container position . 21 Figure 8 — ON/OFF switch with hood . 23 Figure 9 — Transport carriage for screw conveyor . 25 Figure 10 — Hygiene areas on mixing machines with front face discharge outlet . 26 SIST EN 13570:2005+A1:2010
EN 13570:2005+A1:2010 (E) 3 Figure 11 — Hygiene areas on mixing machines with bottom discharge opening . 27 Figure B.1 — Smooth surfaces - food area . 35 Figure B.2 — Angles and radii in food area . 36 Figure B.3 — Angle in food area . 37 Figure B.4 — Adjoining surfaces in food area . 37 Figure B.5 — Admissible joining elements – head profiles . 39
SIST EN 13570:2005+A1:2010
EN 13570:2005+A1:2010 (E) 4 Foreword This document (EN 13570:2005+A1:2010) 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 December 2010, and conflicting national standards shall be withdrawn at the latest by December 2010. 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 includes Amendment 1, approved by CEN on 2010-05-06. This document supersedes EN 13570:2005. The start and finish of text introduced or altered by amendment is indicated in the text by tags!"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." 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.
SIST EN 13570:2005+A1:2010
EN 13570:2005+A1:2010 (E) 5 Introduction This European Standard is a type C standard as stated in EN ISO 12100-1. The machinery concerned and the extent to which hazards, hazardous situations and events are covered are indicated in the scope of this European Standard. 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. SIST EN 13570:2005+A1:2010
EN 13570:2005+A1:2010 (E) 6 1 Scope 1.1 This European Standard specifies safety and hygiene requirements to minimise the hazards which can arise during the commissioning, the use and the maintenance of mixing machines and their accessories intended to be used in sausage kitchens and industrial operations. This European Standard deals with all significant hazards, hazardous situations and events relevant to mixing 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 is not applicable to mixing machines which are manufactured before the date of publication of this European Standard by CEN. 1.2 This European Standard covers the following types of mixing machines: Mixing machines with a tilting container, one or several mixing shafts Mixing machines with a stationary mixing container, front face or bottom discharge opening Mixing machines with a container and loading device Mixing machines with a container, mixing shaft(s), screw conveyor and loading device The mixing machines are constructed of a machine frame, a trough-shaped mixing container, one or several mixing shafts, an associated drive and electrical, hydraulic and pneumatic components, depending on machine type. The mixing shaft can be equipped with wings, screws, rods, paddles or the like. Mixing machines may be equipped e. g. with
cover over the top of the mixing container, pipe connections for gases, steam, water or vacuum, protective hood over the front face discharge opening, lifting devices for mixing shaft, loading device, screw conveyor at the discharge opening. SIST EN 13570:2005+A1:2010
EN 13570:2005+A1:2010 (E) 7
KEY 1 cover 2 mixing container 3 mixing shaft 4 front-face discharge opening 5 bottom discharge opening Figure 1 — Components of a mixing machine 1.3 Intended use The fresh or frozen meat, meat product, meat pieces or fish, salt, spices and other additives are loaded into the mixing container by hand or by means of a loading device and mixed by the mixing unit. The discharge outlet may be located at the bottom or the front face and can either be a slide, a flap, a pipe, a pump or a screw. During the production of this standard the following assumptions were made: Mixing machines are installed at a sufficiently lighted place. They are used only by designated and skilled operators. Although it should be advised against, the standard, taking into account practice, deals with the hazards due to cleaning with pressurised water. 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 614-1:2006, Safety of machinery — Ergonomic design principles — Part 1: Terminology and general principles SIST EN 13570:2005+A1:2010
EN 13570:2005+A1:2010 (E) 8 EN 953:1997, Safety of machinery — Guards — General requirements for the design and construction of fixed and movable guards EN 982, Safety of machinery — Safety requirements for fluid power systems and their components — Hydraulics 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 machine 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 529:1989) EN 61496-1:2007, Safety of machinery — Electrosensitive protective equipment — Part 1: General requirements and tests (IEC 61496-1:2004, modified) EN ISO 4287, Geometrical product specifications (GPS) — Surface texture: Profile method — Terms, definitions and surface texture parameters (ISO 4287:1997) EN ISO 4871:1996, Acoustics — Declaration and verification of noise emission values of machinery and equipment (ISO 4871:1996) EN ISO 11201:1995, Acoustics — Noise emitted by machinery and equipment — Measurement of emission sound pressure levels at a work station and at other specified positions — Engineering method in an essentially free field over a reflecting plane (ISO 11201:1995) 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 (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 distance to prevent danger zones being reached by the upper limbs (ISO 13857:2008) EN ISO 14121-1:2007, Safety of machinery — Risk assessment — Part 1: Principles (ISO 14121-1:2007)" SIST EN 13570:2005+A1:2010
EN 13570:2005+A1:2010 (E) 9 3 Terms and definitions For the purposes of this European Standard, the terms and definitions given in EN ISO 12100-1:2003 and the following apply. 3.1 working platform accessible standing area 3.2 interlocking step interlocked standing area 3.3 discharge flap flap at the discharge outlet 3.4 loading device lift tilt device for
the lifting and tilting of
trolleys and containers 3.5 product container device for holding products to be processed 3.6 feed intake cover movable device with safety function at the feed intake 3.7 trolley wheel-mounted device for holding the products to be processed 3.8 design dimension sum of the dimensions measured from the floor, or in case of steps, intermediate steps or working platforms: from the standing place, to the edge of the mixing container and from the edge of the mixing container to the next danger point in the mixing container 3.9 mixing container container for holding products to be processed 3.10 mixing shaft rotating component in the mixing container for mixing the product 3.11 mechanical trip bar device with safety function 3.12 protective grid (mixing container) device on the opening of the mixing container with safety function 3.13 protective hood (discharge outlet) device over the discharge outlet with safety function SIST EN 13570:2005+A1:2010
EN 13570:2005+A1:2010 (E) 10 3.14 safeguard against toppling device for preventing the machine from lifting or toppling over 3.15 feeding screw rotating screw-shaped component in the mixing container for meat transport 3.16 transport carriage trolley for holding the lock nut, set of cutting tools, worm and feeding screw 3.17 protective position of an interlocked step
step in horizontal position, causing stopping of the machine 4 List of significant hazards 4.1 General This Clause and Annex C contains all the significant hazards, hazardous situations and events, as far as they are dealt with in this standard, identified by a risk assessment significant for this type of machine and which require action identified to eliminate or reduce risk. Before using this standard it is important to carry out a risk assessment according to !EN ISO 14121-1" of the mixing machine to check that it has identified all significant hazards, hazardous situations and events in this Clause.
KEY 1 Zone 1 2
Zone 2 3
Zone 3 4
Zone 4 5
Zone 5 6
Zone 6 7
Zone 7 8
Zone 8 9
Zone 9 10
Zone 10 Figure 2 — Danger zones on mixing machines SIST EN 13570:2005+A1:2010
EN 13570:2005+A1:2010 (E) 11 4.2 Mechanical hazards
4.2.1 Mixing machines with a container, one or several mixing shafts and feeding screw Zone 1 Rotating feeding screw and/or mixing shaft in mixing container. Hazards from entanglement, shearing or severing to fingers, hand or fore arm. 4.2.2 Discharge outlet on mixing machines with a stationary mixing container, one or several mixing shafts, front face or bottom discharge Zone 2 Rotating mixing shaft(s) in mixing container, access through discharge outlet or draining outlet. Hazards from entanglement, shearing or severing to fingers, hand or forearm. Zone 4 Powered closure of discharge flap or slide. Crushing hazard to fingers, hand or forearm. 4.2.3 Drive units Zone 6 Drive of mixing shaft. Hazards from crushing, shearing or drawing-in to fingers or hand. Zone 5 Drive mechanism used to raise or lower the protective hood on discharge. Hazards from crushing or shearing of upper limbs. 4.2.4 Machine components e. g. cover over mixing container Zone 3 Unintentional shutting of closing machine components and intentional closing of machine components. Hazards from crushing to fingers or hand. 4.2.5 Loading device on mixing machines Zone 7 Space below transport carriage or container. Hazards from trapping or crushing at floor level during descent to the body. Hazards from impact during uncontrolled descent e. g. in the case of mechanical failures to the body. SIST EN 13570:2005+A1:2010
EN 13570:2005+A1:2010 (E) 12 Zone 8 Path of movement of transport carriage and container. Hazards from impact from moving components to the body. Hazards from crushing or shearing between moving and stationary components to the fingers or hand. Zone 9 Drive elements and (where used) pulleys, chains or wire ropes. Hazards from drawing-in, shearing, crushing or entanglement to fingers or hand. Zone 10 Discharge area Hazards from impact or crushing from load-bearing-device to the body. Other mechanical hazards Hazards from crushing , impact caused by tilting (loss of stability) to the body. 4.3 Electrical hazards 4.3.1 Direct or indirect electrical contact with live components Hazard from electric shock to the body. 4.3.2 Electrical components with insufficient safety level Hazard from mechanical shock to the body due to malfunction. 4.4 Hydraulic hazards Hazard from ejection of high-pressure fluid, Contamination of the product by hydraulic fluid. 4.5 Hazard from loss of stability Hazard to the body by impact or crushing to the body, if the machine or the loading device topples over. 4.6 Noise hazard Mixing machines may generate noise which can result in hearing damage, in accidents due to interference with speech communication and interference with the perception of acoustic signals 4.7 Hazard from use of gases (N2, CO2 and steam) Leakage of gases such as carbon dioxide (CO2), nitrogen (N2) or steam
Hazard of suffocation, SIST EN 13570:2005+A1:2010
EN 13570:2005+A1:2010 (E) 13 Hazard of burns, frostbite or scalding. 4.8 Hazards from non-compliance with ergonomic principles Unhealthy posture or excessive physical effort, Inadequate consideration of human anatomy of hand/arm or foot/leg during machine design. Hazard from physical damage. 4.9 Hazard from dust Addition of additives such as, e. g. spices, flour, will lead to dust formation. Risk of asthma and allergies. 4.10 Hazards from non-compliance with hygiene principles Microbial causes Hazard (spoilage) of foodstuff. Hazard from damage to health of the consumer through food poisoning. Chemical causes Hazard (contamination) of foodstuff through residues of cleaning and disinfecting agents. Hazard from damage to health of the consumer through internal cauterizations. Physical causes Foreign bodies originating from raw materials, machinery or other sources. Hazard from damage to human health of the consumer through internal injuries. 5 Safety and hygiene requirements and/or protective measures 5.1 General Mixing machines shall comply with the safety requirements and/or protective measures of this Clause and Annex C of this standard. In addition, they shall be designed according to the principles of EN 12100-2 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 4287, EN ISO 12100, EN ISO 13849-1,
EN ISO 13857 and EN ISO 14121-1, 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 machine 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. SIST EN 13570:2005+A1:2010
EN 13570:2005+A1:2010 (E) 14 Where the means of reducing the risk is by a safe system of working the machinery, 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 General Mixing machines shall be designed and constructed in accordance with Annex C and the conditions mentioned below. !The interlocking systems of guards shall comply with 4.2.1 of EN 1088:1995 (interlocking devices without guard locking) and the safety related components of the control system shall present at least Performance Level “c” of EN ISO 13849-1:2008." Additionally the interlocking devices shall be built inside the machine housing and correspond to 5.7 of EN 1088:1995. NOTE This is required to fulfil hygienic requirements, to protect against mechanical damages, to protect against the effects of cleaning and disinfecting materials, to protect against the effects of cleaning fluids (water), to protect against bypassing by simple methods. In the instruction handbook, the manufacturer shall indicate the daily verification of the interlocking device. !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." 5.2.2 Measures on mixing machines with a container, one or several mixing shafts Zone 1 Access to the danger points on the mixing shaft in the mixing container shall be prevented or restricted. This shall be achieved by one of the following measures: design (e. g. closed mixing container) including a closed loading device for products (e. g. screw conveyor, pipeline with pump) (see 5.2.3.1) or use of guards (e. g. a cover), according to EN 953:1997 (see 5.2.3.2) or use of electrosensitive protective devices (e.g. light barrier/curtain), see EN 12100-1:2003 (see 5.2.3.3.2) or use of fixed guards (e. g. fence), see EN 953:1997 or the use of adequate safety distances, design and additional measures (see 5.2.3.3) SIST EN 13570:2005+A1:2010
EN 13570:2005+A1:2010 (E) 15 5.2.3 Interlocking devices 5.2.3.1 Mixing machines with a closed mixing container On these mixing machines, the mixing container and loading device shall be completely enclosed (connection of machines) or the openings shall comply with !EN ISO 14121-1:2007, Table 4". The functioning of the machine shall be subordinated to the presence of the loading device by an interlocking device at the separation point. !The interlocking system of the separation point shall comply with the introductory requirements of 5.2.1 and the safety related parts of the control device shall present at least Performance Level “c” of
EN ISO 13849-1:2008." 5.2.3.2 Mixing machines with a cover at the mixing container A cover shall be provided at the mixing container. The cover shall be interlocked. When the machine is running without product, the mixing shaft shall come to a standstill within 2 s after the front edge of the guard has been raised 50 mm (opening travel). !The interlocking system of the movable cover shall comply with the introductory requirements of 5.2.1 and the safety related parts of the control device shall present at least Performance Level “c” of
EN ISO 13849-1:2008." Openings in the cover shall comply with EN 294:1992, table 4.
KEY 1
Cover interlocked, opening travel Figure 3 — Mixing machines with a cover at the mixing container - safety dimensions 5.2.3.3 Design of mixing machines with safety distances and additional measures 5.2.3.3.1 General On mixing machines which cannot use an interlocked cover or a light curtain because they would interrupt continuous working, the following measures are necessary: SIST EN 13570:2005+A1:2010
EN 13570:2005+A1:2010 (E) 16 5.2.3.3.2 Safety distances The design dimension (see 3.8), measured from the floor (standing area) shall be ≥ 2250 mm. This is only possible in connection with additional measures 5.2.3.3.3. There by the distance from floor to upper edge of mechanical bar or light barrier must be H1 ≥ 1600 mm. The distance from the standing area, from steps, and platforms up to the upper edge of the mechanical trip bar/light barrier must be H2
≥ 1100 mm (see figure 4). 5.2.3.3.3 Additional measures With a height H1 > 1600 mm, means shall be provided (e. g. a mirror or a fill level indicator) for allowing a verification of the product level in the hopper. The outside walls shall be designed (e. g. vertical and smooth) to prevent the operator climbing on the machine. This also applies to interlocked steps in their folded position. a) Interlocked step If danger points in the feed intake hopper can be reached from steps or platforms (design measure < 2250 mm). the steps or treads of platforms shall be foldable and interlocked for preventing the functioning of the machine when they are in their protective position. When the mixing machine is running without product, the mixing shaft shall come to a standstill within 2 s after the interlocking system has been actuated by moving the step into its protective position.
!The interlocking system of the movable step shall comply with the introductory requirements of 5.2.1 and the safety-related components of the control system shall present at least Performance Level “c of
EN ISO 13849-1:2008." The standing area of steps shall have a width ≥ 500 mm and a length ≥ 400 mm and a toe rail of a height of 15 mm. If the standing area is < 500 mm above ground, an area of a width ≥ 400 mm and a length ≥ 350 mm is sufficient. The standing area shall be of the non-slip type. Platforms and accessible areas shall have of a width B ≥ 500 mm. The length of the platform shall correspond to the length of the hopper. Platforms which are located > 500 mm above ground shall be fitted with safety devices to prevent falls. Intermediate steps, stairs or ladders and grab handles shall be provided if the step-up height to the step or to the platform is > 500 mm. The standing areas and treads shall be sufficiently large and of the non-slip type and arranged at identical distances from one another. The standing area of the intermediate step shall have a width of ≥ 300 mm and a length of ≥ 200 mm. Treads of ladders shall have a length of ≥ 500 mm and a width of ≥ 80 mm. A ladder shall be arranged at an angle of < 70
to the horizontal. SIST EN 13570:2005+A1:2010
EN 13570:2005+A1:2010 (E) 17
KEY 1 mechanical bar 2 step, interlocked
H1
≥ 1600 mm H2
≥ 1100 mm H3
≥
500 mm with intermediate step H1 + D + E
≥ 2250 mm H3 + H2 + D1 + E1 ≥ 2250 mm Figure 4 — Mixing machine with open mixing container, mechanical bar, light barrier and interlocking step at the operator side – safety dimensions b) Mechanical trip bar/light barrier or movable protective grid on mixing container edge, running round all sides At the hopper edge there shall be, at all sides alternatively, a mechanical trip bar, a light barrier or a protective grid with trip function (see figures 4 and 5). Therefore the design dimension from the standing area (floor or fixed step or fixed platform) across the upper edge of the protection equipment at the hopper edge up to the next hazard point in the hopper shall be > 2250 mm. !The interlocking of the mechanical trip bar or the movable protective grid shall comply with the introductory requirements of 5.2.1 and the safety-related components of the control system shall present at least Performance Level “c”
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.