SIST EN 13732:2022
(Main)Food processing machinery - Bulk milk coolers on farms - Requirements for performance, safety and hygiene
Food processing machinery - Bulk milk coolers on farms - Requirements for performance, safety and hygiene
1.1 This document specifies requirements for design, performance, safety and hygiene of refrigerated bulk milk coolers and the related methods of test.
NOTE The informative Annex J gives some elements regarding the estimation and calculation of energy consumption.
This document deals with all significant hazards, hazardous situations and events relevant to bulk milk coolers on farm, when they are used as intended and under the conditions of misuse which are reasonably foreseeable by the manufacturer (see Clause 4).
It applies to refrigerated bulk milk tanks with air-cooled condensing units and automatic control intended for installation on farms or at milk collection points. It applies to tanks for two milkings (24 h), four milkings (48 h) and six milkings (72 h), in which the cooling takes place totally (non-pre-cooled milk) or partially (in case of pre-cooled milk) within the tank. It also applies to tanks in combination with a continuous system of milking (e.g. milking with robot).
1.2 This document does not cover:
- mobile tanks;
- tanks intended to be tilted for drainage;
- equipment for delivering the milk to the tank;
- equipment for pre-cooling of the milk;
- the hazards due to the use of other energy than electrical energy;
- pressure aspect of vacuum tanks (i.e. tanks where the inner part of the vessel is designed to operate at a pressure below atmospheric pressure).
1.3 Noise is not considered to be a significant hazard, but relevant for bulk milk coolers. This document therefore includes information in 7.1 and in Annex A concerning the manufacturer's declaration of the noise emission level of the cooler.
1.4 This document does not cover the calibration requirements for the tank to be used as a system for payment purpose.
1.5 This document is not applicable to bulk milk coolers on farm which are manufactured before the date of its publication as EN.
Nahrungsmittelmaschinen - Behältermilchkühlanlagen für Milcherzeugerbetriebe - Anforderungen an Leistung, Sicherheit und Hygiene
1.1 Dieses Dokument legt die Anforderungen für die Konstruktion, Leistung, Sicherheit und Hygiene von Behälter Milchkühlanlagen und die damit verbundenen Prüfverfahren fest.
ANMERKUNG Der informative Anhang J enthält einige Elemente zur Schätzung und Berechnung der Energieaufnahme.
Dieses Dokument behandelt alle signifikanten Gefährdungen, Gefährdungssituationen und Gefährdungs-ereignisse, die auf Behälter Milchkühlanlagen für Milcherzeugerbetriebe zutreffen, wenn sie bestimmungsgemäß und unter Bedingungen von durch den Hersteller vernünftigerweise vorhersehbaren Fehlanwendungen verwendet werden (siehe Abschnitt 4).
Es gilt für Behälter Milchkühlanlagen mit luftgekühlten Verflüssigersätzen und automatischer Steuerung, die für die Aufstellung in Milcherzeugerbetrieben oder in Milchsammelstellen bestimmt sind. Es gilt für Kühltanks für zwei Gemelke (24 h), vier Gemelke (48 h) und sechs Gemelke (72 h), bei denen die Kühlung vollständig (nicht vorgekühlte Milch) oder teilweise (im Fall von vorgekühlter Milch) innerhalb des Kühltanks erfolgt. Es gilt auch für Tanks in Verbindung mit einer kontinuierlichen Melkanlage (z. B. Melkautomat).
1.2 Dieses Dokument gilt nicht für:
- mobile Tanks;
- Tanks, die zur Entleerung gekippt werden;
- die Ausrüstung für die Befüllung des Tanks mit Milch;
- die Ausrüstung für das Vorkühlen der Milch;
- die Gefährdungen durch die Verwendung anderer Energie als Elektrizität;
- die Druckaspekte von Vakuumtanks (d. h. Tanks, bei denen der innenliegende Teil des Behälters für den Betrieb bei einem Druck unter dem Atmosphärendruck ausgelegt ist).
1.3 Lärm wird nicht als signifikante Gefährdung für Behälter Milchkühlanlagen angesehen. Das vorliegende Dokument enthält in 7.1 und Anhang A Informationen über die Erklärung des Herstellers zum Geräuschemissionspegel des Kühlbehälters.
1.4 Dieses Dokument enthält keine Anforderungen an die Kühltankkalibrierung, die für Abrechnungszwecke benutzt werden.
1.5 Dieses Dokument gilt nicht für Behälter Milchkühlanlagen für Milcherzeugerbetriebe, die vor dem Datum ihrer Veröffentlichung als EN hergestellt wurden.
Machines pour les produits alimentaires - Refroidisseurs de lait en vrac à la ferme - Prescriptions pour les performances, la sécurité et l'hygiène
1.1 Le présent document spécifie les prescriptions relatives à la conception, aux performances, à la sécurité et à l’hygiène des refroidisseurs de lait en vrac avec groupe frigorifique ainsi que les méthodes d’essai correspondantes.
NOTE L’Annexe J informative donne des éléments concernant l’estimation et le calcul de la consommation d’énergie.
Le présent document traite de tous les phénomènes dangereux, situations et événements dangereux significatifs spécifiques aux refroidisseurs de lait en vrac à la ferme, lorsqu’ils sont utilisés normalement et dans les conditions de mauvais usage raisonnablement prévisible par le constructeur (voir Article 4).
Il s’applique aux refroidisseurs de lait en vrac avec groupe frigorifique refroidi par air et commande automatique, destinés à être installés dans des fermes ou dans des centres de ramassage du lait. Il s’applique aux refroidisseurs « deux traites » (24 h), « quatre traites » (48 h) et « six traites » (72 h), dans lesquels le refroidissement s’effectue entièrement (lait non prérefroidi) ou partiellement (lait prérefroidi) dans la cuve. Il s’applique également aux refroidisseurs associés à un système de traite en continu (par exemple, traite effectuée par un robot).
1.2 Le présent document ne couvre pas :
- les refroidisseurs mobiles ;
- les refroidisseurs prévus pour être basculés lors de la vidange ;
- l’équipement d’introduction du lait dans le refroidisseur ;
- l’équipement de prérefroidissement du lait ;
- les phénomènes dangereux engendrés par l’utilisation d’une énergie autre qu’électrique ;
- la question de la pression des refroidisseurs sous vide (c’est-à-dire, des refroidisseurs où la cuve intérieure est destinée à fonctionner à une pression inférieure à la pression atmosphérique).
1.3 Le bruit n’est pas considéré comme un phénomène dangereux significatif, mais comme un phénomène dangereux pertinent pour les refroidisseurs de lait en vrac. Par conséquent, le présent document inclut, en 7.1 et à l’Annexe A, les informations relatives à la déclaration par le constructeur du niveau sonore du refroidisseur.
1.4 Le présent document ne couvre pas les prescriptions de jaugeage du refroidisseur à utiliser comme système de paiement.
1.5 Le présent document ne s’applique pas aux refroidisseurs de lait en vrac à la ferme construits avant sa date de publication en tant que norme EN.
Stroji za predelavo hrane - Hladilniki za shranjevanje namolzenega mleka - Zahteve za zmogljivost, varnost in higieno
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 13732:2022
01-december-2022
Nadomešča:
SIST EN 13732:2013
Stroji za predelavo hrane - Hladilniki za shranjevanje namolzenega mleka - Zahteve
za zmogljivost, varnost in higieno
Food processing machinery - Bulk milk coolers on farms - Requirements for
performance, safety and hygiene
Nahrungsmittelmaschinen - Behältermilchkühlanlagen für Milcherzeugerbetriebe -
Anforderungen an Leistung, Sicherheit und Hygiene
Machines pour les produits alimentaires - Refroidisseurs de lait en vrac à la ferme -
Prescriptions pour les performances, la sécurité et l'hygiène
Ta slovenski standard je istoveten z: EN 13732:2022
ICS:
65.040.10 Poslopja, naprave in oprema Livestock buildings,
za živino installations and equipment
67.260 Tovarne in oprema za živilsko Plants and equipment for the
industrijo food industry
SIST EN 13732:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 13732:2022
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SIST EN 13732:2022
EN 13732
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2022
EUROPÄISCHE NORM
ICS 65.040.10; 67.260 Supersedes EN 13732:2013
English Version
Food processing machinery - Bulk milk coolers on farms -
Requirements for performance, safety and hygiene
Machines pour les produits alimentaires - Nahrungsmittelmaschinen - Behältermilchkühlanlagen
Refroidisseurs de lait en vrac à la ferme - Prescriptions für Milcherzeugerbetriebe - Anforderungen an
pour les performances, la sécurité et l'hygiène Leistung, Sicherheit und Hygiene
This European Standard was approved by CEN on 10 January 2022.
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-CENELEC 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-CENELEC 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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13732:2022 E
worldwide for CEN national Members.
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SIST EN 13732:2022
EN 13732:2022 (E)
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 8
4 Safety requirements and/or protective measures — Performance . 13
4.1 General . 13
4.2 Mechanical hazards . 14
4.3 Electrical hazards . 15
4.4 Thermal hazards and hazards generated by materials and substances used . 15
4.5 Hygiene . 15
4.6 Energy consumption . 21
4.7 Ergonomics . 21
4.8 Provisions for maintenance . 22
4.9 Other general requirements for tanks . 22
4.10 Additional requirements for ice bank tanks . 25
4.11 Noise . 25
5 Verification and tests . 26
6 Information for use . 29
6.1 General . 29
6.2 Warning signs and signals . 29
6.3 Instruction handbook . 30
6.4 Instructions check list . 31
6.5 Installation and maintenance instructions . 32
6.6 Minimum marking . 33
Annex A (informative) List of significant hazards . 35
Annex B (normative) Noise test code (Grade 2 of accuracy) . 37
Annex C (normative) Electrical requirements for bulk milk coolers according to EN 60204-
1:2018 . 41
Annex D (normative) Electrical requirements for bulk milk coolers according to EN 60335-
1:2012 . 43
Annex E (normative) Test for cooling, thermal insulation, mixing tests . 49
Annex F (normative) Test for cleanability and cleaning performance . 67
Annex G (normative) Sampling methods for milk mixing tests . 76
Annex H (normative) Equipment and installation for the tests for cleanability and cleaning
performance required in Annex F . 77
Annex I (normative) Evaluation of stainless steel equivalence . 83
Annex J (informative) Example of milk tank service record . 86
2
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SIST EN 13732:2022
EN 13732:2022 (E)
Annex K (informative) Estimation and measurement of the energy consumption . 88
Annex L (informative) Safe access and rescue . 93
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2006/42/EC aimed to be covered . 95
Bibliography . 97
3
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SIST EN 13732:2022
EN 13732:2022 (E)
European foreword
This document (EN 13732:2022) 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.
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 January 2023, and conflicting national standards shall
be withdrawn at the latest by July 2025.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 13732:2013.
In comparison with the previous edition, the following changes have been made:
a) addition of continuous system of milking in the scope;
b) updating of normative references;
c) specification of stainless steel equivalence;
d) new informative annex regarding estimation and measurement of energy consumption;
e) technical and editorial modifications.
This document has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association, and supports essential requirements of EU
Directive(s) / Regulation(s).
For relationship with EU Directive(s) / Regulation(s), see informative Annex ZA, which is an integral part
of this document.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations 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, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United
Kingdom.
4
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SIST EN 13732:2022
EN 13732:2022 (E)
Introduction
This document is a type-C standard as stated in EN ISO 12100:2010.
This document is of relevance, in particular, for the following stakeholder groups representing the market
players with regard to machinery safety:
— machine manufacturers (small, medium and large enterprises);
— health and safety bodies (regulators, accident prevention organizations, market surveillance, etc.).
Others can be affected by the level of machinery safety achieved with the means of the document by the
above-mentioned stakeholder groups:
— machine users/employers (small, medium and large enterprises);
— machine users/employees (e.g. trade unions, organizations for people with special needs);
— service providers, e.g. for maintenance (small, medium and large enterprises);
— consumers (in case of machinery intended for use by consumers).
The above-mentioned stakeholder groups have been given the possibility to participate at the drafting
process of this document. The machinery concerned and the extent to which hazards, hazardous
situations or hazardous events are covered are indicated in the Scope of this document.
When requirements of this type-C standard are different from those which are stated in type-A or type-B
standards, the requirements of this type-C standard take precedence over the requirements of the other
standards for machines that have been designed and built according to the requirements of this type-C
standard.
5
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EN 13732:2022 (E)
1 Scope
1.1 This document specifies requirements for design, performance, safety and hygiene of refrigerated
bulk milk coolers and the related methods of test.
NOTE The informative Annex K gives some elements regarding the estimation and calculation of energy
consumption.
This document deals with all significant hazards, hazardous situations and events relevant to bulk milk
coolers on farm, when they are installed, used and maintained as intended by the manufacturer (see
informative Annex A).
It applies to refrigerated bulk milk tanks with air-cooled condensing units and automatic control intended
for installation on farms or at milk collection points. It applies to tanks for two milkings (24 h), four
milkings (48 h) and six milkings (72 h), in which the cooling takes place totally (non-pre-cooled milk) or
partially (in case of pre-cooled milk) within the tank. It also applies to tanks in combination with a
continuous system of milking (e.g. milking with robot).
1.2 This document does not cover:
— mobile tanks;
— tanks intended to be tilted for drainage;
— equipment for delivering the milk to the tank;
— equipment for pre-cooling of the milk;
— the hazards due to the use of other energy than electrical energy;
— pressure aspect of vacuum tanks (tank of which the inner vessel is designed to operate at a pressure
below atmospheric pressure);
— calibration requirements for the measurement of the milk volume.
1.3 This document is not applicable to bulk milk coolers on farms which are manufactured before the
date of its publication as EN.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 378-1:2016+A1:2020, Refrigerating systems and heat pumps — Safety and environmental
requirements — Part 1: Basic requirements, definitions, classification and selection criteria
EN 378-2:2016, Refrigerating systems and heat pumps — Safety and environmental requirements —
Part 2: Design, construction, testing, marking and documentation
EN 378-3:2016+A1:2020, Refrigerating systems and heat pumps — Safety and environmental
requirements — Part 3: Installation site and personal protection
EN 378-4:2016+A1:2019, Refrigerating systems and heat pumps — Safety and environmental
requirements — Part 4: Operation, maintenance, repair and recovery
6
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SIST EN 13732:2022
EN 13732:2022 (E)
EN 1005-3:2002+A1:2008, Safety of machinery — Human physical performance — Part 3: Recommended
force limits for machinery operation
EN 1672-2:2020, Food processing machinery — Basic concepts — Part 2: Hygiene and cleanability
requirements
EN 10088-2:2014, Stainless steels — Part 2: Technical delivery conditions for sheet/plate and strip of
corrosion resisting steels for general purposes
EN 60204-1:2018, Safety of machinery — Electrical equipment of machines — Part 1: General requirements
1)
EN 60335-1:2012 , Household and similar electrical appliances — Safety — Part 1: General requirements
EN 60335-2-34:2013, Household and similar electrical appliances — Safety — Part 2-34: Particular
requirements for motor-compressors
2)
, Degrees of protection provided by enclosures (IP Code)
EN 60529:1991
EN 61310-1:2008, Safety of machinery — Indication, marking and actuation — Part 1: Requirements for
visual, acoustic and tactile signals
EN ISO 1211:2010, Milk — Determination of fat content — Gravimetric method (Reference method)
(ISO 1211:2010)
EN ISO 3651-2:1998, Determination of resistance to intergranular corrosion of stainless steels — Part 2:
Ferritic, austenitic and ferritic-austenitic (duplex) stainless steels — Corrosion test in media containing
sulfuric acid (ISO 3651-2:1998)
EN ISO 3744:2010, Acoustics — Determination of sound power levels and sound energy levels of noise
sources using sound pressure — Engineering methods for an essentially free field over a reflecting plane
(ISO 3744:2010)
EN ISO 4871:2009, Acoustics — Declaration and verification of noise emission values of machinery and
equipment (ISO 4871:1996)
EN ISO 11201:2010, Acoustics — Noise emitted by machinery and equipment — Determination of emission
sound pressure levels at a work station and at other specified positions in an essentially free field over a
reflecting plane with negligible environmental corrections (ISO 11201:2010)
3)
EN ISO 11202:2010 , Acoustics — Noise emitted by machinery and equipment — Determination of
emission sound pressure levels at a work station and at other specified positions applying approximate
environmental corrections (ISO 11202:2010)
1)
As impacted by EN 60335-1:2012/AC:2014, EN 60335-1:2012/A11:2014, EN 60335-1:2012/A13:2017,
EN 60335-1:2012/A1:2019, EN 60335-1:2012/A2:2019 EN 60335-1:2012/A14:2019 and EN 60335-
1:2012/A15:2021.
2)
As impacted by EN 60529:1991/A1:2000, EN 60529:1991/A2:2013 and EN 60529:1991/AC:2016-12.
3)
As impacted by EN ISO 11202:2010/A1:2021.
7
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SIST EN 13732:2022
EN 13732:2022 (E)
EN ISO 11463:2020, Corrosion of metals and alloys — Guidelines for the evaluation of pitting corrosion
(ISO 11463:2020)
EN ISO 11688-1:2009, Acoustics — Recommended practice for the design of low-noise machinery and
equipment — Part 1: Planning (ISO/TR 11688-1:1995)
EN ISO 12100:2010, Safety of machinery — General principles for design — Risk assessment and risk
reduction (ISO 12100:2010)
EN ISO 13732-1:2008, Ergonomics of the thermal environment — Methods for the assessment of human
responses to contact with surfaces — Part 1: Hot surfaces (ISO 13732-1:2006)
EN ISO 13849-1:2015, Safety of machinery — Safety-related parts of control systems — Part 1: General
principles for design (ISO 13849-1:2015)
EN ISO 13857:2019, Safety of machinery — Safety distances to prevent hazard zones being reached by
upper and lower limbs (ISO 13857:2019)
EN ISO 14119:2013, Safety of machinery — Interlocking devices associated with guards — Principles for
design and selection (ISO 14119:2013)
EN ISO 14120:2015, Safety of machinery — Guards — General requirements for the design and
construction of fixed and movable guards (ISO 14120:2015)
EN ISO 14122-2:2016, Safety of machinery — Permanent means of access to machinery — Part 2: Working
platforms and walkways (ISO 14122-2:2016)
EN ISO 14122-3:2016, Safety of machinery — Permanent means of access to machinery — Part 3: Stairs,
stepladders and guard-rails (ISO 14122-3:2016)
EN ISO 21920-3:2022, Geometrical product specifications (GPS) — Surface texture: Profile — Part 3:
Specification operators (ISO 21920-3:2021)
ASTM G48-11:2015, Standard test methods for pitting and crevice corrosion resistance of stainless steels
and related alloys by use of ferric chloride solution
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 12100:2010,
EN 1672-2:2020 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
refrigerated bulk milk tank
equipment for refrigeration and bulk storage of refrigerated raw milk freshly milked
Note 1 to entry: In the following text, "refrigerated bulk milk tank" is referred as "tank".
Note 2 to entry: Milk freshly milked is milk less than 2 h after being milked.
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3.2
silo tank
vertical closed tank designed to be standing on a flat horizontal surface
Note 1 to entry: See Figure 1.
Figure 1 — Examples of silo tank
3.3
open tank
tank equipped with a lid which in the open position allows manual washing of the inner vessel
Note 1 to entry: See Figure 2.
Figure 2 — Example of open tank
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EN 13732:2022 (E)
3.4
closed tank
horizontal tank equipped with automatic washing of the inner vessel and manhole with a cover for
inspection
Note 1 to entry: Access through the manhole is only for maintenance.
Note 2 to entry: See Figure 3.
Figure 3 — Example of closed tank
3.5
pre-cooled milk
milk partially or completely cooled to storage temperature before entering the tank
3.6
automatic control
arrangement by which the equipment functions under normal operating conditions, without requiring
action by the operator
3.7
agitator
device to mix the milk to promote heat transfer and to ensure uniform distribution of butter fat
3.8
reference position
position specified by the manufacturer for correct installation and operation of the tank
3.9
maximum volume
V
m
volume to which the inner vessel in its reference position and without agitation may be filled without
overflowing (expressed in l)
3.10
rated volume
V
r
volume of the maximum permissible filling of the tank under operating conditions as stated by the
manufacturer (expressed in l)
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3.11
direct cooling system
cooling system in which the evaporator of the refrigerating system is in direct thermal contact with the
milk or the inner vessel
3.12
indirect cooling system
cooling system in which the evaporator of the refrigerating system is not in direct thermal contact with
the milk or the inner vessel and the heat is transferred from the milk to the refrigerant through a cooling
medium
3.13
batch filling tank
tank intended to be filled by a number of milkings
3.14
ice bank tank
tank with an indirect integrated cooling system in which the cooling medium is water and in which ice is
built on the evaporator
3.15
milking
batch of milk (or test water) which is added to the tank and cooled in a specific cooling time
3.16
tank for two milkings
tank intended for cooling and storing milk where the milk is added in two batches, each with a volume
equal to 50 % of the tank rated volume
3.17
tank for four milkings
tank intended for cooling and storing milk where the milk is added in four batches, each with a volume
equal to 25 % of the tank rated volume
3.18
tank for six milkings
tank intended for cooling and storing milk where the milk is added in six batches each, with a volume
equal to 16,7 % of the tank rated volume
3.19
operating conditions
state during which the tank is in use for the cooling and storage of milk in accordance with its design
requirements and all accessories are functioning effectively
3.20
ambient atmosphere
atmosphere surrounding the tank and in front of the air-cooled condenser of the refrigerating system
3.21
mean temperature
calculated average of the different temperatures (in °C) of a medium (air, test water, milk) measured at
different measuring points, at the same time
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3.22
ambient temperature
mean temperature of the ambient atmosphere (in °C)
3.23
performance temperature
PT
ambient temperature (in °C) to be used when measuring the milk cooling time
3.24
safe operating temperature
SOT
highest limit of the range of ambient temperatures (in °C) at which the equipment is required to function
3.25
initial temperature
IT
mean temperature (in °C) of the milk to be cooled at the time of the commencement of the cooling test
3.26
storage temperature
mean temperature (in °C) to which the milk to be cooled is reduced for storage
3.27
cooling time
time (in h) required to cool a milking from initial temperature to +4 °C
3.28
cooling cycle
period between two successive milk collections
3.29
specific energy consumption
energy consumption in watt-hours per litre (Wh/l) of cooled milk, measured as the mean consumption
of all components (excluding cleaning) during a cooling test under the test conditions appropriate to the
performance class
Note 1 to entry: The specific energy consumption may be also estimated as indicated in the informative Annex K.
3.30
milk
bovine mammary secretion without either addition thereto or extraction therefrom, untreated and not
standardised, complying with Code of Principles concerning milk and milk products, international
standards and standard methods of sampling and analysis for milk products of the Joint FAO/WHO Food
Standards Programme
Note 1 to entry: Food and Agriculture Organisation (FAO)/ World Health Organisation (WHO).
3.31
water
water, suitable for human consumption, meeting the requirements specified in Directive 98/83/EC
relating to the quality of water intended for human consumption
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3.32
test water
TW
water used for test purpose in place of milk
Note 1 to entry: The cooling time for water is nearly the same as that for milk.
3.33
filling
volume of the milk (or TW) in the tank
3.34
temperature of the milk
mean temperature of the milk (or TW) at a particular moment
Note 1 to entry: See E.1.5.
3.35
compact and plug-in tank
tank where the condensing unit(s) is (are) mounted on the tank and the equipment which leave(s) the
manufacturer and which does not require further refrigerant and installation work to be in full working
condition
3.36
tank for continuous flow
tank designed for cooling milk when added continuously at a rate of x l/h where x is expressed in steps
of 25 l/h
3.37
minimum and maximum flow
minimum and maximum average milk flow rates (expressed in l/h) at which a tank for continuous flow
is designed to operate
3.38
minimum cooling volume
minimum quantity or flow rate at which the tank may operate without formation of ice:
— two milkings tanks: V × 0,2;
r
— four milkings tanks: V × 0,1;
r
— six milkings tanks: V × 0,067;
r
— continuous flow tank: according to the minimum flow given by the manufacturer
4 Safety requirements and/or protective measures — Performance
4.1 General
Machinery shall comply with the safety requirements and/or protective measures of this clause.
In addition, the machine shall be designed according to the principles of EN ISO 12100:2010 for hazards
relevant but not significant, and for hazards arising under the conditions of misuse which are reasonably
foreseeable and which are not dealt with by this document.
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EN 13732:2022 (E)
4.2 Mechanical hazards
4.2.1 Lids and covers
4.2.1.1 Lids / open tanks
For open tanks, the open and closed positions of the lid shall be stable. The opening and closing
operations shall require an intentional action.
Hinged lids of open tanks shall have a means to keep them in the open position (e.g. spring, hook, bracket,
etc.) or the centre of gravity of the lid shall be at least 15° over the balancing position.
4.2.1.2 Covers / closed tank
For closed tanks having one or more manholes, the locking of the cover of this manhole(s) in the closed
position shall require an intentional action. Furthermore, it shall be clearly and visibly marked, adjacent
to the manhole(s), that (see also 6.2 and 6.3):
— before the closing of the cover, it shall be checked that nobody is in the vessel;
— before entering the tank, it shall be necessary to read the instruction handbook.
For closed tanks, each opening greater than 240 mm (maximum diameter in the case of a circular or
maximum axis in case of an elliptical opening, side length in the case of a square), and which is located
more than 1,35 m above the inner floor shall be provided with a fixed guard requiring a tool to enable
access or shall be fitted with an interlocking device to stop agitation and cleaning functions of the tank. If
a fixed guard is used, it shall comply with EN ISO 14120:2015.
For reasons of hygiene and safety, the design and instruction for use shall avoid the need to enter the tank
in normal operation.
4.2.2 Agitators
Access to agitator attached to the lid of open tanks shall be safeguarded by int
...
SLOVENSKI STANDARD
oSIST prEN 13732:2019
01-november-2019
Stroji za predelavo hrane - Hladilniki za shranjevanje namolzenega mleka - Zahteve
za zmogljivost, varnost in higieno
Food processing machinery - Bulk milk coolers on farms - Requirements for
performance, safety and hygiene
Nahrungsmittelmaschinen - Behältermilchkühlanlagen für Milcherzeugerbetriebe -
Anforderungen an Leistung, Sicherheit und Hygiene
Machines pour les produits alimentaires - Refroidisseurs de lait en vrac à la ferme -
Prescriptions pour les performances, la sécurité et l'hygiène
Ta slovenski standard je istoveten z: prEN 13732
ICS:
65.040.10 Poslopja, naprave in oprema Livestock buildings,
za živino installations and equipment
67.260 Tovarne in oprema za živilsko Plants and equipment for the
industrijo food industry
oSIST prEN 13732:2019 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 13732:2019
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oSIST prEN 13732:2019
DRAFT
EUROPEAN STANDARD
prEN 13732
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2019
ICS 65.040.10; 67.260 Will supersede EN 13732:2013
English Version
Food processing machinery - Bulk milk coolers on farms -
Requirements for performance, safety and hygiene
Machines pour les produits alimentaires - Nahrungsmittelmaschinen - Behältermilchkühlanlagen
Refroidisseurs de lait en vrac à la ferme - Prescriptions für Milcherzeugerbetriebe - Anforderungen an
pour les performances, la sécurité et l'hygiène Leistung, Sicherheit und Hygiene
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 153.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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-CENELEC
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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 13732:2019 E
worldwide for CEN national Members.
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prEN 13732:2019 (E)
Contents Page
European foreword . 5
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 10
4 List of significant hazards . 14
5 Safety requirements and/or protective measures — Performance . 15
5.1 General . 15
5.2 Mechanical hazards . 15
5.3 Electrical hazards . 15
5.4 Thermal hazards and hazards generated by materials and substances used . 16
5.5 Hygiene . 16
5.6 Energy consumption . 22
5.7 Ergonomics . 22
5.8 Provisions for maintenance . 23
5.9 Other general requirements for tanks . 23
5.10 Additional requirements for special tanks – Ice bank tanks . 25
6 Verification and tests . 26
7 Information for use . 29
7.1 General . 29
7.2 Warning signs . 29
7.3 Instruction handbook for the user . 30
7.4 Instructions checklist . 31
7.5 Installation and maintenance instructions . 32
7.6 Dismantling instructions . 33
7.7 Minimum marking . 33
Annex A (normative) Noise test code (Grade 2 of accuracy) . 35
A.1 General . 35
A.2 Emission sound pressure level determination . 35
A.3 Mounting conditions . 35
A.4 Operating conditions . 36
A.5 Measurement uncertainties . 36
A.6 Information to be recorded . 36
A.7 Information to be reported . 37
A.8 Declaration and verification of the noise emission values . 37
Annex B (normative) Electrical requirements for bulk milk coolers according to EN 60204-
1:2006 . 39
B.1 Safety requirements related to electromagnetic phenomena . 39
B.2 Protection against electric shock . 39
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B.3 Ambient air temperature . 39
B.4 Supply disconnecting device. 39
B.5 Power circuits . 39
B.6 Overload protection of motors . 39
B.7 Control circuit supply . 39
B.8 Emergency stop devices . 40
B.9 Degrees of protection . 40
B.10 Markings of control equipment . 40
Annex C (normative) Electrical requirements for bulk milk coolers according to EN 60335-
1:2012 . 41
C.1 General . 41
C.2 Normal operation (see EN 60335-1:2012, 3.1.9) . 41
C.3 General conditions for the tests (see EN 60335-1:2012, Clause 5) . 41
C.4 Classification (see EN 60335-1:2012, Clause 6) . 41
C.5 Input and current (see EN 60335-1:2012, Clause 10) . 41
C.6 Heating (see EN 60335-1:2012, Clause 11) . 41
C.7 Leakage current and electric strength at operating temperature (see EN 60335-
1:2012, Clause 13) . 42
C.8 Moisture resistance (see of EN 60335-1:2012, Clause 15) . 43
C.9 Abnormal operation (see EN 60335-1:2012, Clause 19) . 43
C.10 Stability and mechanical hazards (see EN 60335-1:2012, Clause 20) . 45
C.11 Mechanical strength (see Clause 21 of EN 60335-1:2012) . 45
C.12 Supply connection and external flexible cords (see EN 60335-1:2012, Clause 25) . 45
C.13 Provision for earthing (see EN 60335-1:2012, Clause 27) . 46
C.14 Creepage distances, clearances and solid insulation (see EN 60335-1:2012,
Clause 29) . 46
C.15 Resistance to heat and fire (see EN 60335-1:2012, Clause 30) . 46
Annex D (normative) Test for cooling, thermal insulation, mixing tests . 47
D.1 General . 47
D.2 Performance tests. 48
Annex E (normative) Test for cleanability and cleaning performance . 64
E.1 Introduction. 64
E.2 Definitions and steps for the test . 64
E.3 Installation of the tank to be tested . 65
E.4 Preparation of soiling milk (solution A) . 65
E.5 Soiling of the tank . 66
E.6 Automatic cleaning of the tank . 66
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E.7 Tank rest phase . 67
E.8 Visual assessment of internal tank surfaces and equipment . 67
E.9 Taking method for bacteriological examinations . 67
E.10 Visual assessment of internal tank surfaces and equipment . 69
E.11 Bacteriological examination . 70
E.12 Chemical examination . 71
E.13 Interpretation of results . 71
Annex F (normative) Sampling methods for milk mixing tests . 72
Annex G (normative) Equipment and installation for the tests for cleanability and cleaning
performance required in Annex E . 73
G.1 Equipment and installation for the examination dealing with the tank outlet (see
E.3.1.4 and E.9.2) . 73
G.2 Equipment and installation for the examination dealing with the internal tank
surfaces and equipment . 74
Annex H (normative) Evaluation of stainless steel equivalence . 78
H.1 General . 78
H.2 Corrosion tests . 78
Annex I (informative) Example of milk tank service record . 81
Annex J (informative) Estimation and measurement of the energy consumption . 83
J.1 General . 83
J.2 Estimation of energy consumption: . 83
J.3 Measurement of energy consumption: . 84
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2006/42/EC aimed to be covered . 88
Bibliography . 90
4
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European foreword
This document (prEN 13732:2019) 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.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 13732:2013.
The main changes compared to the previous edition are the following:
a) continuous system of milking added in the scope;
b) updating of normative references;
c) specification of stainless steel equivalence;
d) new informative annex regarding estimation and measurement of energy consumption;
e) technical and editorial modifications.
5
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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 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.
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1 Scope
1.1 This document specifies requirements for design, performance, safety and hygiene of refrigerated
bulk milk coolers and the related methods of test.
NOTE The informative Annex J gives some elements regarding the estimation and calculation of energy
consumption.
This document deals with all significant hazards, hazardous situations and events relevant to bulk milk
coolers on farm, when they are used as intended and under the conditions of misuse which are reasonably
foreseeable by the manufacturer (see Clause 4).
It applies to refrigerated bulk milk tanks with air-cooled condensing units and automatic control intended
for installation on farms or at milk collection points. It applies to tanks for two milkings (24 h), four
milkings (48 h) and six milkings (72 h), in which the cooling takes place totally (non-pre-cooled milk) or
partially (in case of pre-cooled milk) within the tank. It also applies to tanks in combination with a
continuous system of milking (e.g. milking with robot).
1.2 This document does not cover:
— mobile tanks;
— tanks intended to be tilted for drainage;
— equipment for delivering the milk to the tank;
— equipment for pre-cooling of the milk;
— the hazards due to the use of other energy than electrical energy;
— pressure aspect of vacuum tanks (i.e. tanks where the inner part of the vessel is designed to operate
at a pressure below atmospheric pressure).
1.3 Noise is not considered to be a significant hazard, but relevant for bulk milk coolers. This document
therefore includes information in 7.1 and in Annex A concerning the manufacturer's declaration of the
noise emission level of the cooler.
1.4 This document does not cover the calibration requirements for the tank to be used as a system for
payment purpose.
1.5 This document is not applicable to bulk milk coolers on farm which are manufactured before the
date of its publication as EN.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 378-1:2016, Refrigerating systems and heat pumps - Safety and environmental requirements - Part 1:
Basic requirements, definitions, classification and selection criteria
EN 378-2:2016, Refrigerating systems and heat pumps - Safety and environmental requirements - Part 2:
Design, construction, testing, marking and documentation
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EN 378-3:2016, Refrigerating systems and heat pumps - Safety and environmental requirements - Part 3:
Installation site and personal protection
EN 378-4:2016, Refrigerating systems and heat pumps - Safety and environmental requirements - Part 4:
Operation, maintenance, repair and recovery
EN 1005-3:2002+A1:2008, Safety of machinery - Human physical performance - Part 3: Recommended
force limits for machinery operation
EN 1672-2:2005+A1:2009, Food processing machinery - Basic concepts - Part 2: Hygiene requirements
EN 10088-2:2014, Stainless steels - Part 2: Technical delivery conditions for sheet/plate and strip of
corrosion resisting steels for general purposes
EN 60204-1:2006, Safety of machinery - Electrical equipment of machines - Part 1: General requirements
(IEC 60204-1:2005, modified)
EN 60335-1:2012, Household and similar electrical appliances - Safety - Part 1: General requirements
(IEC 60335-1:2010, modified)
EN 60335-2-34:2013, Household and similar electrical appliances - Safety - Part 2-34: Particular
requirements for motor-compressors (IEC 60335-2-34:2010)
1)
EN 60529:1991, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989)
EN 61310-1:2008, Safety of machinery - Indication, marking and actuation - Part 1: Requirements for
visual, acoustic and tactile signals (IEC 61310-1:2008)
EN ISO 1211:2010, Milk - Determination of fat content - Gravimetric method (Reference method) (ISO
1211:2010)
EN ISO 3651-2:1998, Determination of resistance to intergranular corrosion of stainless steels - Part 2:
Ferritic, austenitic and ferritic-austenitic (duplex) stainless steels - Corrosion test in media containing
sulfuric acid (ISO 3651-2:1998)
EN ISO 3744:2010, Acoustics - Determination of sound power levels and sound energy levels of noise sources
using sound pressure - Engineering methods for an essentially free field over a reflecting plane (ISO
3744:2010)
EN ISO 4288:1997, Geometrical product specifications (GPS) - Surface texture: Profile method - Rules and
procedures for the assessment of surface texture (ISO 4288:1996)
EN ISO 4871:2009, Acoustics - Declaration and verification of noise emission values of machinery and
equipment (ISO 4871:1996)
EN ISO 11201:2010, Acoustics - Noise emitted by machinery and equipment - Determination of emission
sound pressure levels at a work station and at other specified positions in an essentially free field over a
reflecting plane with negligible environmental corrections (ISO 11201:2010)
1) EN 60529:1991 is impacted by the amendments EN 60529:1991/A1:2000, Degrees of protection provided by
enclosures (IP Code) (IEC 60529:1991/A1:2000) and by EN 60529:1991/A2:2013, Degrees of protection provided by
enclosures (IP Code) (IEC 60529:1991/A2:2013).
8
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EN ISO 11202:2010, Acoustics - Noise emitted by machinery and equipment - Determination of emission
sound pressure levels at a work station and at other specified positions applying approximate environmental
corrections (ISO 11202:2010)
EN ISO 11463:2008, Corrosion of metals and alloys - Evaluation of pitting corrosion (ISO 11463:1995)
EN ISO 12100:2010, Safety of machinery - General principles for design - Risk assessment and risk reduction
(ISO 12100:2010)
EN ISO 13732-1:2008, Ergonomics of the thermal environment - Methods for the assessment of human
responses to contact with surfaces - Part 1: Hot surfaces (ISO 13732-1:2006)
EN ISO 13849-1:2015, Safety of machinery — Safety-related parts of control systems — Part 1: General
principles for design (ISO 13849-1:2015)
EN ISO 14119:2013, Safety of machinery - Interlocking devices associated with guards - Principles for
design and selection (ISO 14119:2013)
EN ISO 14122-2:2016, Safety of machinery - Permanent means of access to machinery - Part 2: Working
platforms and walkways (ISO 14122-2:2016)
EN ISO 14122-3:2016, Safety of machinery - Permanent means of access to machinery - Part 3: Stairs,
stepladders and guard-rails (ISO 14122-3:2016)
ISO 2852:1993, Stainless steel clamp pipe couplings for the food industry
ISO 2853:1993, Stainless steel threaded couplings for the food industry
ASTM G48:2015, Standard test methods for pitting and crevice corrosion resistance of stainless steels and
related alloys by use of ferric chloride solution
9
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3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 12100:2010,
EN 1672-2:2005+A1:2009 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
refrigerated bulk milk tank
equipment for refrigeration, and bulk storage of refrigerated raw milk freshly milked
Note 1 to entry: In the following referred to as “tank”.
Note 2 to entry: “milk freshly milked” is milk less than 2 h after being milked.
3.2
open tank
refrigerated bulk milk tank equipped with a lid which in the open position allows manual washing of the
inner vessel
3.3
closed tank
refrigerated bulk milk tank equipped with automatic washing of the inner vessel
Note 1 to entry: A manhole is only used for maintenance.
3.4
pre-cooled milk
milk partially or completely cooled before entering the tank
3.5
automatic control
arrangement by which the equipment functions under normal operating conditions, without requiring
action by the operator
3.6
atmospheric tank
tank in which the inner part of the vessel is designed to operate at atmospheric pressure
3.7
agitator
device to mix the milk to promote heat transfer and to ensure uniform distribution of butterfat
3.8
reference position
position specified by the manufacturer for correct installation and operation of the tank
3.9
maximum volume
V
m
volume to which the inner part of the vessel in its reference position and without agitation can be filled
without overflowing (expressed in litres)
10
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3.10
rated volume
V
r
volume of the maximum permissible filling of the tank under operating conditions as stated by the
manufacturer (expressed in litres)
3.11
direct cooling system
cooling system in which the evaporator of the refrigerating system is in direct thermal contact with the
milk or the inner part of the vessel
3.12
indirect cooling system
cooling system in which the heat is transferred from the milk to the refrigerant through a cooling medium
3.13
batch filling tank
tank intended to be filled by a number of milkings
3.14
ice bank tank
tank with an indirect integrated cooling system in which the cooling medium is water and ice is built on
the evaporator
3.15
milking
a batch of milk (or test water) which is added to the tank and cooled in a specific cooling time
3.16
tank for two milkings
tank intended for cooling and storing milk where the milk is added in two batches each with a volume
equal to 50 % of the tank’s rated capacity
3.17
tank for four milkings
tank intended for cooling and storing milk where the milk
...
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