BS EN 13732:2013
$215.11
Food processing machinery. Bulk milk coolers on farms. Requirements for performance, safety and hygiene
| Published By | Publication Date | Number of Pages |
| BSI | 2013 | 76 |
1.1 This European Standard specifies requirements for design, performance, safety and hygiene of refrigerated bulk milk coolers and the related methods of test. This standard deals with all significant hazards, hazardous situations and events relevant to bulk milk coolers on farms, 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 collecting 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. Performance requirements in 5.5.1.2.1 and 5.5.1.2.2 do not apply to tanks in combination with instant cooling or in association with a continuous system of milking (e.g. milking with robot). 1.2 This European Standard does not cover: – mobile tanks; – tanks intended to be tilted for drainage; – equipment for delivering the milk to the tank; – equipment for pre-cooling or instant cooling of the milk; – the hazards due to the use of other energy than electrical energy; – pression aspect of vacuum tanks. 1.3 Noise is not considered to be a significant hazard, but a relevant one for bulk milk coolers. This standard 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 standard does not cover the calibration requirements for the tank to be used as a system for payment purpose. 1.5 This standard is not applicable to bulk milk coolers on farms which are manufactured before the date of its publication as an EN.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 6 | Foreword |
| 7 | Introduction |
| 8 | 1 Scope |
| 9 | 2 Normative references |
| 10 | 3 Terms and definitions |
| 14 | 4 List of significant hazards Table 1 |
| 15 | 5 Safety requirements and/or protective measures — Performance 5.1 General 5.2 Mechanical hazards 5.2.1 Lids and covers 5.2.2 Agitators 5.2.3 Refrigerating system 5.2.4 Stability |
| 16 | 5.3 Electrical hazards 5.4 Thermal hazards and hazards generated by materials and substances used 5.5 Hygiene 5.5.1 Adequate cooling and safe storage of milk 5.5.1.1 Control and electrical equipment 5.5.1.2 Cooling and agitation performances 5.5.1.2.1 Performance classes 5.5.1.2.1.1 General 5.5.1.2.1.2 Classification according to number of milkings |
| 17 | 5.5.1.2.1.3 Classification according to ambient temperature Table 2 5.5.1.2.1.4 Classification according to milk cooling time Table 3 5.5.1.2.1.5 Classification according to milk inlet temperature 5.5.1.2.1.6 Example of performance class marking 5.5.1.2.2 Milk cooling rate |
| 18 | 5.5.1.2.3 Storage of the milk 5.5.1.2.4 Thermal insulation 5.5.1.2.5 Freezing of the milk 5.5.1.2.6 Agitation of the milk 5.5.1.2.7 Safe operating temperature 5.5.2 Prevention of milk contamination 5.5.2.1 General |
| 19 | 5.5.2.2 Inner vessel |
| 20 | Figure 1 5.5.2.3 Openings and lids in connection with the inner vessel Figure 2 |
| 21 | 5.5.2.4 Thermometers 5.5.2.5 Agitators 5.5.2.6 Cleaning 5.5.2.7 Automatic cleaning equipment 5.6 Ergonomics |
| 22 | 5.7 Provisions for maintenance 5.8 Other general requirements for tanks 5.8.1 Temperature resistance 5.8.2 Inner vessel 5.8.3 Outer casing 5.8.4 Thermal insulation 5.8.5 Supports and feet |
| 23 | 5.8.6 Milk inlet aperture 5.8.7 Outlet Figure 3 5.8.8 Electrical controls 5.8.8.1 Duty selection |
| 24 | 5.8.8.2 Periodic timer 5.8.8.3 Timer for sampling 5.8.8.4 Thermometer 5.9 Additional requirements for special tanks – Ice bank tanks 5.9.1 Design |
| 25 | 5.9.2 Ice bank control 6 Verification and tests Table 4 |
| 28 | 7 Information for use 7.1 General 7.2 Warning signs |
| 29 | Figure 4 — Warning sign ISO 7010 – W017: Warning; Hot surface 7.3 Instruction handbook for the user |
| 30 | 7.4 Instructions check list 7.4.1 Instructions check list for day to day operation |
| 31 | 7.4.2 Instructions check list for milk collection 7.5 Installation and maintenance instructions |
| 32 | 7.6 Dismantling instructions 7.7 Minimum marking |
| 34 | Annex A (normative) Noise test code (Grade 2 of accuracy) A.1 General A.2 Emission sound pressure level determination A.3 Mounting conditions |
| 35 | A.4 Operating conditions A.5 Measurement uncertainties A.6 Information to be recorded |
| 36 | A.7 Information to be reported A.8 Declaration and verification of the noise emission values |
| 37 | Table A.1 — Example of dual-number declaration for noise emission values |
| 38 | Annex B (normative) Electrical requirements for bulk milk coolers according to EN 60204-1:2006 B.1 Safety requirements related to electromagnetic phenomena B.2 Protection against electric shock B.3 Ambient air temperature B.4 Supply disconnecting device B.5 Power circuits B.6 Overload protection of motors |
| 39 | B.7 Control circuit supply B.8 Emergency stop devices B.9 Degrees of protection B.10 Markings of control equipment |
| 40 | Annex C (normative) Electrical requirements for bulk milk coolers according to EN 60335-1:2002 C.1 General C.2 Normal operation C.3 General conditions for the tests C.4 Classification C.5 Input and current |
| 41 | C.6 Heating Table C.1 – Temperature limits of motor compressors C.7 Leakage current and electric strength at operating temperature |
| 42 | C.8 Moisture resistance C.9 Abnormal operation |
| 44 | Figure C.2 — Supply circuit for the locked-rotor test of condenser fan motors C.10 Stability and mechanical hazards C.11 Mechanical strength C.12 Supply connection and external flexible cords |
| 45 | C.13 Provision for earthing C.14 Creepage distances, clearances and solid insulation C.15 Resistance to heat and fire |
| 46 | Annex D (normative) Test for cooling, thermal insulation, mixing tests D.1 General D.1.1 Accuracy on measurements D.1.1.1 Ambient temperature D.1.1.2 Milk or TW temperature D.1.1.3 Volume D.1.1.4 Other measurements D.1.2 Frequency of measurements D.1.2.1 Temperature measurements D.1.2.2 Other measurements D.1.3 Ambient temperature D.1.3.1 General |
| 47 | D.1.3.2 Temperature in front of the condenser D.1.3.3 Temperature around the tank D.1.3.4 Location of measuring points D.1.3.5 Number of measuring points D.1.4 Air movement D.1.5 Temperature of the milk or TW D.1.6 Electricity supply D.2 Performance tests D.2.1 Milk cooling tests D.2.1.1 General D.2.1.1.1 Location of the tank |
| 48 | D.2.1.1.2 Temperature of the tank D.2.1.1.3 Condition of the tank D.2.1.1.4 Procedures D.2.1.1.5 Checking of controls D.2.1.2 Low volume – first milking test: direct cooling tanks |
| 49 | D.2.1.3 Low milk volume/ice build test – Ice bank tanks |
| 50 | D.2.1.4 Milk cooling test – Direct cooling tanks D.2.1.4.1 General D.2.1.4.2 Reference test: test n 1 – first milking |
| 51 | D.2.1.4.3 Reference test: test n 2 – last milking Table D.1 Figure D.1 — Test procedure – direct cooling tanks |
| 52 | D.2.1.4.4 Reference test: test n 1 and test n 2 – Energy consumption calculations D.2.1.4.5 Confirmation test: test n 3 – First milking and test n 4 – Last milking D.2.1.5 Milk cooling test – Ice bank tanks D.2.1.5.1 General D.2.1.5.2 Initial preparation work |
| 53 | D.2.1.5.3 Reference test: test n 1 – First milking |
| 54 | Figure D.2 — Test procedure – ice bank tanks D.2.1.5.4 Reference test: test n 2: last milking |
| 55 | Table D.2 D.2.1.5.5 Reference test: test n 1 and test n 2 – Energy consumption and operating time calculations D.2.1.5.6 Confirmation test: test n 3 – First milking and test n 4 – Last milking |
| 56 | D.2.1.6 First milking test at SOT – Direct cooling tanks D.2.1.7 First milking test at SOT – Ice bank tanks D.2.1.8 Failure of the ice-bank control |
| 57 | D.2.2 Thermal insulation test D.2.2.1 Location of the tank D.2.3 Milk mixing tests |
| 59 | Annex E (normative) Test for cleanability and cleaning performance E.1 Introduction E.2 Definitions and steps for the test |
| 60 | E.3 Installation of the tank to be tested E.3.1 Connection and installation of the tank in its reference position E.3.2 First automatic cleaning cycle E.3.3 After a complete automatic cleaning cycle E.4 Preparation of soiling milk (solution A) |
| 61 | E.5 Soiling of the tank E.6 Automatic cleaning of the tank |
| 62 | E.7 Tank rest phase E.8 Visual assessment of internal tank surfaces and equipment E.9 Taking method for bacteriological examinations E.9.1 Solutions and equipment used for bacteriological examinations E.9.1.1 Solutions and equipment used for the rinsing method |
| 63 | E.9.1.2 Equipment used for the swabbing method E.9.2 Assessment of the tank outlet E.9.3 Assessment of the internal tank surfaces and equipment E.9.3.1 General E.9.3.2 Rinsing method |
| 64 | E.9.3.3 Swabbing method E.10 Visual assessment of internal tank surfaces and equipment E.11 Bacteriological examination |
| 65 | E.11.10 Rinsing method E.11.11 Swabbing procedure E.12 Chemical examination |
| 66 | E.13 Interpretation of results E.13.1 Chemical evaluation E.13.2 Bacteriological evaluation E.13.3 Visual evaluation |
| 67 | Annex F (normative) Sampling methods for milk mixing tests |
| 68 | Annex G (normative) Equipment and installation for the tests for cleanability and cleaning performance required in Annex E G.1 Equipment and installation for the examination dealing with the tank outlet G.1.1 Equipment G.1.2 Installation |
| 69 | Figure G.1 G.2 Equipment and installation for the examination dealing with the internal tank surfaces and equipment G.2.1 For spraying method (see E.5.3 and E.9.3.1) G.2.1.1 Equipment |
| 70 | Figure G.2 Figure G.3 |
| 71 | Figure G.4 G.2.2 For swabbing method (see E.9.3.2) G.2.2.1 Equipment Figure G.5 |
| 72 | G.2.2.2 Installation Figure G.6 |
| 73 | Annex Z A (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/CE |
| 74 | Bibliography |
