Lesson 2 - Plant Cleaning

Question 1

What are the 4 steps for CIP

Answer 1

Time
Temperature
Mechanical action
Detergent

Question 2

What are the two design features of a cip system

Answer 2

1. Cleaning head
2. Ring main

Question 3

Why are centrifugal pumps used

Answer 3

They offer high flow rates. Optimal between 1.5m/s to 2m/s

Question 4

What are the two types of spray heads

Answer 4

1. Fixed
2. Rotating

Question 5

What is the benefit of fixed spray head

Answer 5

They are cheap

Question 6

What’s the disadvantage of fixed spray heads

Answer 6

They often use larger amounts of water at low pressure

Question 7

What are the 6 types of cleaning agent

Answer 7

1. Alkaline
2. Acid
3. Wetting agent
4. Sequestering
5. Dispersing
6. Chlorination

Question 8

What are the three design features that minimise dirt accumulation

Answer 8

CIP tanks must be conical in design
Vessels should not contain any dead areas or uncurved edges
Deadlegs should be not larger than 0.5 of pipe diameter
U bend pipes only