oSIST prEN 13732:2019

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

• Status: Not Published
• Public Enquiry End Date: 29-Nov-2019
• ICS: 65.040.10 - Livestock buildings, installations and equipment
• ICS: 67.260 - Plants and equipment for the food industry
• Technical Committee: VSN - Safety of machinery
• Current Stage: 5020 - Formal vote (FV) (Adopted Project)
• Start Date: 21-Oct-2021
• Due Date: 09-Dec-2021
• Directive: 2006/42/EC - Directive 2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast)
• Mandate: M/396 - Mandate to CEN and Cenelec for standardisation in the field of machinery
• Ref Project: FprEN 13732 - Food processing machinery - Bulk milk coolers on farms - Requirements for performance, safety and hygiene

RELATIONS

• Revised: SIST EN 13732:2013 - Food processing machinery - Bulk milk coolers on farms - Requirements for performance, safety and hygiene
• Effective Date: 17-Dec-2014

Standards Content (sample)

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.

---------------------- Page: 1 ----------------------
oSIST prEN 13732:2019
---------------------- Page: 2 ----------------------
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.
---------------------- Page: 3 ----------------------
oSIST prEN 13732:2019
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

---------------------- Page: 4 ----------------------
oSIST prEN 13732:2019
prEN 13732:2019 (E)

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

---------------------- Page: 5 ----------------------
oSIST prEN 13732:2019
prEN 13732:2019 (E)

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

---------------------- Page: 6 ----------------------
oSIST prEN 13732:2019
prEN 13732:2019 (E)
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.
---------------------- Page: 7 ----------------------
oSIST prEN 13732:2019
prEN 13732:2019 (E)
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.
---------------------- Page: 8 ----------------------
oSIST prEN 13732:2019
prEN 13732:2019 (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 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
---------------------- Page: 9 ----------------------
oSIST prEN 13732:2019
prEN 13732:2019 (E)

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)

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).
---------------------- Page: 10 ----------------------
oSIST prEN 13732:2019
prEN 13732:2019 (E)

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
---------------------- Page: 11 ----------------------
oSIST prEN 13732:2019
prEN 13732:2019 (E)
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

volume to which the inner part of the vessel in its reference position and without agitation can be filled

without overflowing (expressed in litres)
---------------------- Page: 12 ----------------------
oSIST prEN 13732:2019
prEN 13732:2019 (E)
3.10
rated volume

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
...