9.1.3 Rinsing operations
The table lists the values for the duration and number of rinsing operations.
Medium Duration [s]
Number of
rinsing
operations
Cleaning steps
Beer 1...2 2...3 During every
cleaning phase:
1.
Prerinse
2.
Hot caustic
3.
Intermediate
rinse
4.
Acid
5.
Rinse
Yeast 1...2 2...3
Fruit juice 2...5 3
Milk 2...5 3
Yoghurt 3...5 3
9.2 Passivation
Before commissioning a plant, passivation is commonly carried out for long pipes
and tanks.
Valve blocks are usually excepted from this. Passivation is typically performed
using nitric acid (HNO
3
) at approx. 80 °C (176 °F) at a concentration of 3 % and a
contact time of 6 to 8 hours.
Cleaning
Passivation
430BAL009990EN_2
38 30.01.2018
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