EN 13951:2003+A1:2008

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Flüssigkeitspumpen - Sicherheitsanforderungen - Nahrungsmittelausrüstungen - Konstruktionsregeln zur Sicherstellung der Hygiene bei der VerwendungPompes pour liquides - Prescriptions de sécurité - Matériel agroalimentaire - Règles de conception pour assurer l'hygiène à l'utilisationLiquid pumps - Safety requirements - Agrifoodstuffs equipment - Design rules to ensure hygiene in use67.260Tovarne in oprema za živilsko industrijoPlants and equipment for the food industry23.080ýUSDONHPumpsICS:Ta slovenski standard je istoveten z:EN 13951:2003+A1:2008SIST EN 13951:2004+A1:2008en01-december-2008SIST EN 13951:2004+A1:2008SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 13951:2003+A1
October 2008 ICS 23.080; 67.260 Supersedes EN 13951:2003 English Version
Liquid pumps - Safety requirements - Agrifoodstuffs equipment -Design rules to ensure hygiene in use
Pompes pour liquides - Prescriptions de sécurité -Matériel agroalimentaire - Règles de conception pour assurer l'hygiène à l'utilisation
Flüssigkeitspumpen - Sicherheitsanforderungen - Nahrungsmittelausrüstungen - Konstruktionsregeln zur Sicherstellung der Hygiene bei der Verwendung This European Standard was approved by CEN on 28 November 2002 and includes Amendment 1 approved by CEN on 14 August 2008.
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
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B-1050 Brussels © 2008 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13951:2003+A1:2008: ESIST EN 13951:2004+A1:2008

Materials in contact with foodstuffs (EU regulations).20 A.1 Metallic materials in contact with foodstuffs.20 A.2 Elastomeric materials in contact with foodstuffs.20 A.3 Plastic materials in contact with foodstuffs.20 Annex B (informative)
Surface roughness.21 Annex C (informative)
Design practices.22 Annex D (informative)
Hygienic risk associated with types of pump inlet and outlet connections.24 D.1 Hazards sources.24 D.2 Criteria to be taken into account.24 Annex E (informative)
Hygienic risk linked to the choice of shaft sealing system and to the characteristics of the pumped product.25 Annex ZA (informative)
!!!!Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/CE"""".26 Annex ZB (informative)
!!!!Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC"""".27 Bibliography.28
NOTE These areas are not to be confused with any others amongst those defined in other standards (e.g. electro-technical standards). (Note in accordance with EN 1672-2:1997) 3.4.1 food area area composed of surfaces in contact with food. The food area also includes the surfaces with which the product may come into contact under intended conditions of use, after which it returns into the product (Definition in accordance with EN 1672-2:1997) 3.4.2 non-food area any area other than those specified above (Definition in accordance with EN 1672-2:1997) SIST EN 13951:2004+A1:2008

Figure 1 — The iterative process to achieve safety
Table 1 — List of Hazards related to Hygiene which are addressed in this standard
EN 13951
Reference to sub-clause Significant hazards to Hygiene Measures to reduce the hazard Means of verification Hazards arising from the ingress of foreign matter
Clause Clause
- wear debris.……. 5.1.1, 5.1.2.1 6.3
- sealing of openings and joints.……. 5.2.6, 5.2.11, 5.2.12, 5.3.1 6.2
- sealing around shafts.……. 5.2.9 6.2
- spillage of product.……. 5.3.1 6.2
- vermin.…. 5.3.1, 5.6 6.2 Hazards arising from microbiological causes
- retention of product.
- general. 5.2.1, 5.2.2, 5.3.1 6.4
- cleaning. 5.2.2, 5.2.3 6.4
- draining.…. 5.2.2, 5.2.3.1, 5.2.11 6.2
- surface finish/texture.…. 5.2.5 6.5
- obstructions/protrusions.…. 5.2.2, 5.2.7 6.2
- bearings.……. 5.2.8, 5.3.2 6.1, 6.2
- shaft seals.……. 5.2.9 6.2
- fasteners.………. 5.2.10, 5.3.3 6.2
- sensors.……. 5.2.12 6.1, 6.2
- lubricants.……. 5.4 6.1, 6.2 Hazards arising from chemical causes
- material compatibility 5.1 6.3
- general. 5.1.1, 5.1.2.1,5.2.9 6.3
- metals. 5.1.2.2 6.1, 6.3
- non-metals. 5.1.2.3 6.1, 6.3
- non-food areas. 5.1.3 6.3
- soldering. 5.2.6 6.2
- cleaning fluids. 5.2.3.1 6.2, 6.4
- sensors. 5.2.12 6.2
- auxiliary liquids. 5.2.8, 5.4 6.1,6.3
- barrier liquids. 5.4 6.1, 6.2 Hazards arising from mechanical causes
- material finishes. 5.1 6.2,6.5
- joints.…. 5.2.6 6.1,6.2
- fasteners.……. 5.2.10 6.1,6.2
- mis-assembly. 5.3.3 6.1,6.2
5 Hygiene: safety requirements and/or measures The operating conditions and features required of every pump unit falling within the scope of this standard will be either defined by the user in a specification or by the manufacturer description which includes limits of operation. The manufacturer shall assess any foreseeable hazards of hygiene arising from operating conditions where specified of the pump or pump unit. The pump or pump unit shall be designed in such a way as to reduce hazards of this standard to an acceptable level. Specifications shall classify the pumps and units, including auxiliary equipment, according to the levels of cleanability required. It is the purchaser's responsibility to select the levels of cleanability appropriate to the application, taking into account the risks arising from the pumped product, the placement of the pump in the process and the cleaning regime anticipated. 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 systems of the element of training required by the operating personnel. 5.1 Materials 5.1.1 Common requirements Materials shall be suitable for intended use. Surfaces of materials and coatings shall be durable, cleanable, without being damaged, and be without breaks, resistant to chipping, flaking, erosion, corrosion and abrasion, and prevent penetration of unwanted matter during intended use. The pump components intended to be dismantled for cleaning shall not be painted. 5.1.2 Food areas 5.1.2.1 Additional requirements In addition to the common requirements set out in 5.1.1, materials used in the food contact area shall be compatible with the pumped product under all foreseeable conditions of use. The compatibility shall not be compromised by the cleaning solutions nor by any disinfection and sterilization treatments specified by the customer. The materials shall be non-absorbant, except where this is technically or functionally unavoidable in which circumstance it shall not reduce the level of safety intended. Operation at intended pressures and product velocities shall not be detrimental to the performance of the materials nor shall temperature give rise to risks from thermal expansion or contraction nor any other thermal degradation. The materials shall be non-toxic and not deleterious to health, and incapable of being dissolved or broken down into elements or compounds which are. Where coatings (metallic or non-metallic) and/or adhesives are used to meet these requirements, the bond shall be and remain continuous. The pumped product shall remain non toxic. Where parts within the pump are subject to wear (for example, mechanical seal rings or close-fitting, rotating rubber components), any wear debris shall be of a size and quantity which is not deleterious to health or to the quality of the pumped product. If abrasive (for example, crystalline or fibrous) foodstuffs will be pumped, the possibility of abrasive wear of the surfaces should be considered and the choice of material subject to agreement between customer and supplier. The manufacturer shall define the safe working value of NPSHR/NPIPR to avoid damage to the material surfaces from cavitation erosion. SIST EN 13951:2004+A1:2008

≤
0,08 %  Cr ≥ 13 %  Ni ≥ 8% Other stainless steels such as duplex stainless steels are often used in pumps. A typical specification for duplex stainless steel is: Cr 22 % Ni 5 %. NOTE 2 Consideration should be given to designating stainless steels in accordance with EN10088 –1. 5.1.2.3 Plastics and elastomers All plastic materials used shall be produced only from monomers according to EU regulation (see annex A) and shall conform to the general requirements of this standard. All elastomeric materials used shall conform to the general requirements of this standard and take into account the informat
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