Dr. Jens Voigt Technische Universität München 2008 · Dispense Systems other DIN Standards •...

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24.10.2008 Dr. Jens Voigt TUM Weihenstephan

Dr. Jens VoigtTechnische Universität München

2008

STANDARDS for DRAFT DISPENSE

(DIN NORM 6650)

Draft Beer Hygiene


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Why Norms & Standards?

• Goals:

- assure position of economy- strategic directives- support national laws and rules- have technical convergence- create efficient control processes and instruments

Quelle: www.din.de , „Arbeiten mit Normen“

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Standards for Dispense Systems

• TRSK• DIN• BG-Rules• EU-regulations

• remaining TRSK transition into BG-Rules• Norms & Standards shall be „state-of-the-art“• Norm can become legal guidelines or laws or law-like

instructions/regulations


Series DIN 6650 Beverage Dispense Plants

• DIN 6650-1 General Requirements• DIN 6650-2 Material Requirements• DIN 6650-3 Safety Requirements of Parts• DIN 6650-4 Hygienic Requirements of Parts and components• DIN 6650-5 Test Methods and Procedures• DIN 6650-6 Cleaning and Disinfection• DIN 6650-7 Hygienic Requirements for Installation of Plants

and Units• DIN 6650-8 Water Dispense Units line-connected – Point of use

(PoU) (in preparation)• DIN 6650-9 Water Dispense Units, free-standing– Watercooler

(in preparation)

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Other Standards for Cylindrical Beverage Containers

• DIN 6647-1 nominal Volume < 50 Litermax. allowed operating overpressure < 3 bar

• DIN 6647-2 nominal volume < 50 Litermax. allowed operating overpressure < 7 bar

• DIN 6647-3 Beverage and base materialmax. allowed operating overpressure < 3 bar, Nominal Volume > 100 l

• DIN 6647-4 Beverage and base materialmax. allowed operating overpressure < 3 bar, Nominal Volume < 60 l


Dispense Systems other DIN Standards

• DIN 6653-1 Beverage and concentrate – Parts (tubes, lines)• DIN 6653-2 Parts : Requirements for operation and testing of

CO2 warning devices• DIN 6653-3 Manual Glas Rinsing Devices• DIN 3542 Keg/Conainer connectors• DIN 32677 Pipe/Tube/Hose connectors• DIN 8546 Pressure Reducing Devices

• DIN VDE 0100 Rules for High voltage installations < 1000 V• DIN VDE 0105-100 Operation of Electrical Plants• DIN 10503, DIN 32677, [...], • ........

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Food Hygiene Regulation, National/European Law(Lebensmittelhygiene Verordnung EU) 2004

• No negative influencesno disgust causing- microbiological- smell, gases, aerolsols- human or animal excretions- pests- effluents, wastes

• No dangerous food handlingSafety concept & hazard analysis


What is a DIN-Norm?

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DIN 6650-4

Dispensing Plants:Hygiene Requirements for Parts


DIN 6650-4: Hygiene Requirements

General:• Design to avoid

ContaminationMicroorganismsIndentation, dead ends cravices, sharp edgesFlows to be drainable

• Surfacessmooth, even for easy drainingcleanability

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• Dirt: all contaminations able to cause negative effects in parts or product

• Cleaning: Removal of Dirt

• Easy-to-clean DesignHygienic Design:

Cleanability with simple meansreliable

DIN 6650-4: Hygiene Requirements


Centric Connectors. No gaps, dead areas!

1 Nut2 Metallic contact, defined pressing3 Zentric

1 Nut2 axial Pressing, radiale seal3 Gap, dead area

Risk!Suggestion

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Risk rightgapedge


DIN 6650-6

Dispense Systems:Requirements for Cleaning and

Disinfection

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DIN 6650-6: Requirements for Cleaning and Disinfection

TargetCleaning IntervalsCleaning methodsCleaning agents


DIN 6650-6: Requirements for Cleaning and Disinfection

Beverages aIntervalls b

days

Fruit juices, nectares

Still Water (< 4g CO2/l), non-alc. beers

Wine; carbonated non-alc. beverages, carbonated waterBeer (except non-alc. Beers)

Concentrates, Spririts

a in mixes lowest intervall relevantb validate test requirements a) to f) according to Section 7 for exceeded intervals

11 to 7

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7 to 14

30 to 90

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Other minimal Cleaning requirements:

• Prior to first commissioning• Before/after usage interruptions > one week• Before every change of product• Parts in contact with air and product (e.g. taps, drip

plates...) daily!• Connection parts before each use at another beverage

container/keg

Who does this really???


Contamination indicators:

• Residues, settlements, films• Untypical smells• sensoric deviations• Other unusual appearances

e.g. fungus, moldhaze in clear liquidsSlime/Biofilm layers on fittings and armatures

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DIN 6650-6

Cleaning Processes - General:• [...] mechanical cleaning methods to be combined with

chemical cleaning or disinfection

• Mechanical cleaning can NOT remove microbiologicalcontamination or kill microbes.


Chemical Cleaning:

• Chemical cleaning has to be able to remove/dissolvelayers and enable steps of disinfection for killing of microbes.

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DIN 6650-6: Cleaning Requirements

Control of Cleaning effects:

• Available Methods :

a) Visual examination for visible contaminationb) mechanical Test methods [...]c) chemical Test methods [...]d) Sensorical Tests (z. B. smell, flavour)e) Mikrobiological culture test method in drafted beverages.

Total culture count: < 1000 cfu/ml ~OK

> 50.000 cfu/ml BAD> 10.000 cfu/ml Cleaning recommended

Colony forming unitsf) Non-cultural Test methods (e.g. ATP-Methods)

• For the control of cleaning tests a) to d) are minmal requirements• Test e) and or f) may be used to describe the status of plants


DIN 6650-6

Requirements for Cleaning/disifection agentsGeneral:

• To be completely removable• To be effective and material compatible

• Appropriate for the use• Safety, health and environmental information from the

supplier to be available• Compliance with food safety regulations

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DIN 6650-6

Cleaning and Disinfection

• Parts and lines to be completely drained• Cleaning and operation instructions to be obeyed• Single use of sponge balls• [...]• Warning at tap, if liquids can be taken during cleaning!!

Thourough rinsing of parts and lines with potable wateruntil no visual indicationsuntil no detergents traceable


DIN 6650-6

Certification of Cleaning or Disifection

- Cleaning or disinfection processes must beconfirmed by performing person

Automated Protocolls are aceptable.

Documentation in a plant record necessary.

Documentation to be available at the plant.

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DIN 6650-7

Hygienic Requirements for Installationsand Plants


• Rooms– Floor condition– Potable Water supply– Avoiding of negative influences

• Requirements for storage cabinets and rooms

- Cleanbility!- Protection against liquids- Lighting

DIN 6650-7: Requirements for plants

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• Includes all parts from storage to tap and also cleaninginstallations

• Hygienic Certificates required


• Documentation– Supplier or Installer,– Date,– Description of Plant– Notes about non-standard equipment– Cleaning instructions– Service and Maintanance instructions– Note about Cleaning after Installation.


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Conclusions

• Standards are needed to create benchmarks

• They can create more safety• They can create more hygiene

• Consumer protection• They support our business and consumer behaviour

• Follow standards and give feedback!

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Thank You!

Dr. Jens VoigtTU München-Weihenstephan

[email protected]

+49 8161 71 3179+49 172 8234 270

Dr. Jens Voigt Technische Universität München 2008 · Dispense Systems other DIN Standards •...

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