Clean-in-Place System

Short answer: A clean-in-place (CIP) system circulates water, detergent and sanitiser through tanks, pipes and closed process equipment in a fixed sequence, so they are cleaned without being taken apart. The configuration depends on how many circuits you have and how long they are, whether solution can return reliably, and the cleaning recipe and checks your product requires.

How it works

A CIP station holds tanks for water, alkaline detergent and, if needed, acid, plus a supply pump, heat exchanger and valves. A typical cycle runs:

1. Pre-rinse with water to remove loose product.
2. Alkaline wash at set temperature and flow to remove fats and proteins.
3. Intermediate rinse.
4. Acid wash, where mineral deposits form, followed by a rinse.
5. Sanitising or final rinse.

Solutions flow to the target equipment, through spray devices in tanks, and back through return pumps to the station, where they may be recovered for reuse. Sensors record temperature, flow, conductivity and time, and the controller prevents the wrong circuit from opening during production.

The design work is mostly in the circuits rather than the station: pipes must slope to drain, dead legs must be avoided, and spray devices must reach every surface inside a tank.

Which configuration fits

Form	Suits	Watch out for
Single circuit	Small plants, one area at a time	Production waits while cleaning runs
Multi-circuit	Plants needing to clean and produce in parallel	More valves and control logic
Central system	One location controls all cleaning	Long pipe runs use more water and chemicals
Zoned system	Large or spread-out plants	Several stations to maintain

What we need from you to quote

• Equipment list for each circuit, with tank volumes and pipe sizes
• Circuit lengths and plant layout drawings
• Product types and soil (sugar, fat, protein, mineral)
• Cleaning recipe or the standard you follow
• Water quality, steam or heating source, and drainage
• Recording and validation requirements
• Control system and integration with production equipment

Where it sits in a line

CIP serves closed equipment such as the pasteurizer, food homogenizer, dairy processing line, juice processing line and liquid filling machine. Heating is often supplied by a food steam generator.