SIST EN 13951:2004

SLOVENSKI STANDARD
01-september-2004
ýUSDONH]DWHNRþLQH9DUQRVWQH]DKWHYH2SUHPD]DNPHWLMVNDåLYLOD3UDYLODSUL
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Liquid pumps - Safety requirements - Agrifoodstuffs equipment ; Design rules to ensure
hygiene in use
Flüssigkeitspumpen - Sicherheitsanforderungen - Nahrungsmittelausrüstungen;
Konstruktionsregeln zur Sicherstellung der Hygiene bei der Verwendung
Pompes pour liquides - Prescriptions de sécurité - Matériel agroalimentaire ; Regles de
conception pour assurer l'hygiene a l'utilisation
Ta slovenski standard je istoveten z: EN 13951:2003
ICS:
23.080 ýUSDONH Pumps
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 13951
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2003
ICS 23.080; 67.260
English version
Liquid pumps - Safety requirements - Agrifoodstuffs equipment ;
Design rules to ensure hygiene in use
Pompes pour liquides - Prescriptions de sécurité - Matériel Flüssigkeitspumpen - Sicherheitsanforderungen -
agroalimentaire ; Règles de conception pour assurer Nahrungsmittelausrüstungen ; Konstruktionsregeln zur
l'hygiène à l'utilisation Sicherstellung der Hygiene bei der Verwendung
This European Standard was approved by CEN on 28 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, Slovak Republic, 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 13951:2003 E
worldwide for CEN national Members.

Contents
page
Foreword.3
Introduction .4
1 Scope .4
2 Normative references .5
3 Terms and definitions.5
4 List of hazards.8
5 Hygiene: safety requirements and/or measures.11
5.1 Materials.11
5.2 Design – Food areas.12
5.3 Design - Non-food areas .16
5.4 Auxiliary liquids, barriers and lubricants .16
5.5 Guards and shrouds.17
5.6 Legs.17
6 Verification of hygiene measures.17
6.1 Inspection of documentation.17
6.2 Inspection of the assembled pump or pump unit.17
6.3 Materials.17
6.4 Level of cleanability.17
6.5 Surface roughness test.18
7 Information for use .18
7.1 General.18
7.2 Instruction for use - Instruction handbook .18
Annex A (informative)  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 of this document with EC Directives.26
Bibliography .27
Foreword
This document (EN 13951:2003) has been prepared by Technical Committee CEN/TC 197 "Pumps", the
secretariat of which is held by AFNOR.
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 September 2003, and conflicting national standards shall be withdrawn at the
latest by September 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.
This document deals with essential requirements 2.1 "Agrifoodstuffs machinery" of Machinery Directive.
The annexes A, B, C, D, E and F are informative.
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,
Slovak Republic, Spain, Sweden, Switzerland and the United Kingdom.
Introduction
This document is a type C standard as stated in EN 1070.
The machinery concerned and the extent to which hazards, hazardous situations and 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 is concerned with the special technical safety requirements for liquid pumps and pump
units operating with agrifoodstuffs. It augments EN 809 and contains a list of the additional significant hazards
which can arise from the pump and pump units used with substances intended for human and domestic animal
consumption.
In drafting this standard it was assumed that the pumps falling within its scope will conform to all relevant
requirement of EN 809.
It also establishes requirements and/or measures which lead to a reduction of the risks.
This standard is not intended to be used for pumps and pump units at any stage in the public water supply, nor for
pumps handling pharmaceutical products, nor for any other application for which more appropriate standards can
exist.
Conformity to this standard aims to ensure that the pump, if used in accordance with the instruction handbook, will
remain safe and, provided it is adequately cleaned, will not cause contamination of the pumped product. Although it
is the responsibility of the manufacturer to ensure that the pump can be cleaned, due to the influence of the
product, the process and the cleaning regime adopted, the hygiene of the pump should ultimately be the
responsibility of the end-user.
The pumps and pump units which fall within the scope of this standard are described as:
 rotodynamic pumps;
 rotary positive displacement pumps;
 reciprocating positive displacement pumps.
Pumps handling agrifoodstuffs which do not fall within this scope should comply with EN 1672-2.
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 809, Pumps and pump units for liquids – Common safety requirements.
EN 1050, Safety of machinery – Principles for risk assessment.
EN 1070, Safety of machinery – Terminology.
EN 1672-2:1997, Food processing machinery – Basic concepts – Part 2: Hygiene requirements.
EN ISO 4287, Geometrical Product Specifications (GPS) – Surface texture : Profile method – Terms, definitions
and surface texture parameters (ISO 4287:1997).
3 Terms and definitions
For the purposes of this European Standard, the terms and definitions given in EN 1070 together with the following
apply.
3.1
food/agrifoodstuffs products
any product, ingredient or material intended to be orally consumed at any stage of its production process
3.2
food hygiene
taking of all measures during the preparation and processing of food to ensure that it is fit for human or animal
consumption
(Definition in accordance with EN 1672-2:1997)
3.3
adverse influence
reduction of the fitness for consumption of a food. A food can be adversely influenced in particular by microbial
pathogens or other unwanted micro-organisms, toxins, vermin, domestic animals and other contaminants
3.4
areas of equipment
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)
3.5
product/pumped product
all products passing through the pumps as a result of process, testing, cleaning, rinsing, or disinfecting products
3.6
cleaning
operations which reduce the potential for contamination to an acceptable level
3.6.1
cleanable
design and construction which permits soils to be removed by appropriate cleaning methods
3.6.2
cleanability
ability of the pump to be cleaned by a defined procedure to defined conditions of cleanliness
3.6.2.1
cleaned in place or mechanical cleaning (CIP, NEP)
CIP or NEP means soil removal by impingement, circulation or flowing chemical detergent solutions and water
rinses into and on to the surfaces to be cleaned without dismantling
NOTE The term CIP corresponds to the abbreviation of the English wording "Cleaned In Place". In Frenc
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