EN 14958:2006+A1:2009

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Stroji za obdelavo hrane - Stroji za mletje in obdelavo moke in zdroba - Varnostne in higienske zahteveNahrungsmittelmaschinen - Maschinen zum Mahlen und Verarbeiten von Mehl und Grieß - Sicherheits- und HygieneanforderungenMachines pour les produits alimentaires - Machines à mouture et transformation de farines et de semoule - Prescriptions relatives à la sécurité et à l'hygiéneFood processing machinery - Machinery for grinding and processing flour and semolina - Safety and hygiene requirements67.260Tovarne in oprema za živilsko industrijoPlants and equipment for the food industryICS:Ta slovenski standard je istoveten z:EN 14958:2006+A1:2009SIST EN 14958:2006+A1:2009en,fr01-junij-2009SIST EN 14958:2006+A1:2009SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 14958:2006+A1
April 2009 ICS 67.260 Supersedes EN 14958:2006English Version
Food processing machinery - Machinery for grinding and processing flour and semolina - Safety and hygiene requirements
Machines pour les produits alimentaires - Machines à mouture et transformation de farines et de semoule - Prescriptions relatives à la sécurité et à l'hygiéne
Nahrungsmittelmaschinen - Maschinen zum Mahlen und Verarbeiten von Mehl und Grieß - Sicherheits- und Hygieneanforderungen This European Standard was approved by CEN on 10 May 2006 and includes Amendment 1 approved by CEN on 7 March 2009.
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, 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 © 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14958:2006+A1:2009: ESIST EN 14958:2006+A1:2009

Principles of design to ensure the cleanability of machinery . 37Annex B (normative)
Noise test code for grinding and processing flour and semolina (grade 2) . 47Annex C (informative)
Evaluation of explosion risks in plants including grain processing machines . 50Annex ZA (normative)
Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC . 54Annex ZB (informative)
!!!!Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC"""" . 55Bibliography . 56
This European Standard is not applicable to:  machines intended for household use or laboratory use;  stone mills;  equipment for dampening and heating;  auxiliary equipment for conveying, weighting and bagging (without changing the characteristics of the products). This European Standard is not dealing with the following:  hazards related to decommissioning;  the hazards of the installations into which the machines are incorporated other than those directly related to the machines in the scope (e.g. start of the installation, disconnection of energy supply, need from an emergency stop device);  hazards due to the use of the machinery in a potentially explosive atmosphere (when producing this standard it has been assumed that the machinery in the scope, if designed and used in accordance with this European Standard, is not creating itself a hazardous atmosphere wholly of partly surrounding it). NOTE If the machine is intended for use in a potentially explosive atmosphere, additional safety measures can be necessary1). This European Standard is not applicable to machines for grinding and processing of flour and semolina which are manufactured before the date of its publication as EN. 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 294:1992, Safety of machinery — Safety distances to prevent danger zones being reached by the upper limbs EN 349:1993, Safety of machinery — Minimum gaps to avoid crushing of parts of the human body
1) For the EU and the EEA the requirements of the EU directive 94/9/EC may apply. SIST EN 14958:2006+A1:2009

(see Figure 4). The following machines are included in this group: vibrating finishers, intensive scourers, rotating sifters, bran finishers, crumblers, de-germinators, de-huskers 3.5 impact machine machine that carry out a physical action on grain and/or grain products by causing a granulometric reduction by impact using rotating components (see Figure 5). The following machines are included in this group: impactors, infestation destroyers SIST EN 14958:2006+A1:2009

Key 1 product inlet 2 grinding rolls 3 product outlet 4 drive motor 5 feeding rolls Figure 1 — Operating principle of roller mill SIST EN 14958:2006+A1:2009

Key 1 product inlet 2 sieves 3 product outlet 4 centrifugal weights 5 suspension rods 6 drive motor Figure 2 — Operating principle of plan sifter and rotary separator SIST EN 14958:2006+A1:2009

Key 1 product inlet 2 air exhaust 3 sieves 4 product outlets 5 supporting springs 6 vibrating devices Figure 3 — Operating principle of air classifier (purifier, gravity separator, aspirator, de-stoner, vibrating separator) SIST EN 14958:2006+A1:2009

Key 1 product inlet 2 air exhaust 3 fixed component (sieve or screen) 4 rotating component 5 product outlet 6 drive motor Figure 4 — Operating principle of rotating machine (vibrating fisher, intensive scourer, rotating sifter, bran finisher, crumbler, de-germinator, de-husker) SIST EN 14958:2006+A1:2009

Key 1 product inlet 2 rotating components 3 drive motor 4 product outlet Figure 5 — Operating principle of impact machine (impactor, infestation destroyer) 4 List of significant hazards This clause contains all the significant hazards, hazardous situations and events, as far as they are dealt with in this European Standard, identified by risk assessment as significant for this type of machinery and which require action to eliminate or reduce the risk. Before using this standard it is important to carry out a risk assessment of the different types of machines to check that it has the hazards identified in this clause. SIST EN 14958:2006+A1:2009

phenomena – 5.3 4.3 Noise hazards e.g. hearing damage, tinnitus, accidents due to a reduced intelligibility of acoustic warning signals, limited speech intelligibility – 5.4 4.4 Hazards resulting from inhalation of dust – 5.5 4.5 Hazards due to neglecting ergonomic principles – 5.6 4.6 Hazards due to neglecting hygienic principles – 5.7.2.1 – 5.7.2.2 – 5.7.2.3 – 5.7.2.4 – 5.7.2.5 – 5.7.2.6 – 5.7.2.7 4.7 Fire and explosion hazards – 5.8 4.8 harmful substances
5.9 SIST EN 14958:2006+A1:2009

Key Zone1: feeding rolls Zone 2: grinding rolls Zone 3: roll drive arrangement Zone 4: pneumatics pistons Zone 5: grinding rolls transmission drive Zone 6: feeding rolls transmission drive Zone 7: scraper Figure 6 — Hazard zones in the roller mill SIST EN 14958:2006+A1:2009

Key Zone 1: centrifugal weights transmission Zone 2: centrifugal weights Zone 8: loss of stability Figure 7 — Hazard zones in the plan sifter
Key Zone 1: vibrating drive Zone 8: loss of stability Figure 8 — Hazard zones at air classifier (purifier) SIST EN 14958:2006+A1:2009

Key Zone 1: rotor Zone 2: motor drive belt transmission Zone 3: screw Zone 4: vibrating drive Figure 9 — Hazard zones in the air classifier (aspirator) SIST EN 14958:2006+A1:2009

Key Zone 1: rotor Zone 2: motor drive belt transmission Figure 10 — Hazard zones in the rotating machine SIST EN 14958:2006+A1:2009

Key Zone 1: rotor Figure 11 — Hazard zones in the impact machine (impactor) SIST EN 14958:2006+A1:2009

Key Zone 1: rotor Zone 2: motor drive transmission Figure 12 — Hazard zones in the impact machine (infestation destroyer) 5.3 Protective measures against electrical hazards 5.3.1 General All electrical equipment associated with the machine shall comply with the requirements of !EN 60204-1:2006" as indicated in this clause. 5.3.2 Protection against electric shock 5.3.2.1 Direct contact Live parts shall be located inside enclosures that provide protection against direct contact of at least IP2X as defined in EN 60529:1991. The opening of enclosure shall only be possible by using a key or tool, or by disconnecting the live parts before opening the enclosure (see 6.2.2 options a and b of !EN 60204-1:2006"). 5.3.2.2 Indirect contact Protection against indirect contact due to insulation failure between live parts and exposed conductive parts, shall be achieved by the connection of exposed conductive parts to the protective bonding circuits and disconnection of the supply in accordance with !EN 60204-1:2006". 5.3.3 !!!!Degrees of protection (see 11.3 of EN 60204-1:2006)"""" Enclosure of control gear shall provide a degree of protection at least IP54. SIST EN 14958:2006+A1:2009

Key
non food area
food area 1 inlet spout 2 feed rolls conveying chute 3 feed valve 4 feed rolls 5 grinding rolls conveying chute 6 grinding rolls 7 brushes/scrapers 8 outlet hopper 9 surfaces close to the feed zone 10, 11 surfaces close to the grinding rolls 12 surfaces close to brushes / scrapers Figure 13
Key
non food area
food area 1 inlet spout 2 sieves compartment upper cover 3 sieves compartment inner surfaces 4 sieve 5 sieve compartment lower cover 6 outlet spout Figure 14 SIST EN 14958:2006+A1:2009

Key
non food area
food area 1 inlet spout 2 feed zone 3 sieves 4 outlet hoppers Figure 15 SIST EN 14958:2006+A1:2009

Key
non food area
food area 1 inlet spout
2 moving body 3 outlet hopper Figure 16 5.7.2.5 Rotating machine (see Figure 17) SIST EN 14958:2006+A1:2009

Key
non food area
food area 1 inlet spout 2 rotor 3 screen / sieve 4 inner surfaces 5 outlet hopper Figure 17 SIST EN 14958:2006+A1:2009

5.7.2.6 Impact machine (impactor) (see Figure 18)
Key
non food area
food area 1 inlet spout 2 pins zone 3 outlet spout Figure 18 SIST EN 14958:2006+A1:2009

5.7.2.7 Impact machine (infestation destroyer) (see Figure 19)
Key
non food area
food area 1 inlet spout 2 pins zone 3 outlet spout Figure 19 5.7.3 Splash area Not present in these machines. 5.7.4 Non food area All parts not mentioned in 5.7.2. 5.8 Measures against fire and explosion hazards 5.8.1 Fire hazard The machines shall be designed and constructed in accordance with the requirements of EN 13478. 5.8.2 Explosion hazard The machines shall be designed and constructed in accordance with the principles and requirements of EN 1127-1, in particular concerning:  measures for avoiding or reducing potentially explosive atmospheres;  measures against potential ignition sources (static electricity, mechanical sparks, overheating of moving parts,…); SIST EN 14958:2006+A1:2009
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