What is Clean-in-place (CIP)?
Clean-in-place (CIP) is the automated cleaning of tanks, pipework, heat exchangers and fillers without taking them apart. A CIP system circulates rinse water, detergent, acid and sanitizer at set temperatures and flows, which makes it one of the largest users of water, heat and chemicals in a dairy or beverage plant.
What it is
Clean-in-place is how food, dairy and beverage plants clean closed equipment between production runs. Instead of opening tanks and pipes, a CIP set pumps a sequence of solutions through the circuit: a pre-rinse, a hot caustic wash, an intermediate rinse, often an acid wash, a final rinse and sometimes a sanitizing step.
Each step has a target temperature, concentration, flow and duration. If any of these drift, the plant either cleans poorly, which is a food safety risk, or over-cleans, which wastes water, steam, chemicals and production time.
Many CIP systems recover rinse water and reuse detergent across cycles. How well that recovery works depends on valves, tank levels and conductivity readings that are rarely tied back to the utility bill.
Who it applies to / where it is used
CIP is used in dairies, breweries, juice and beverage lines, edible oil refining, sauces, infant nutrition and pharmaceutical processing. In a dairy, CIP wash-downs run on silos, tankers, pasteurizers, separators and filling lines, often several times a day, so CIP water and heat are a large share of the plant's utility use.
How it is measured / what evidence it needs
Plants measure CIP by cycle. The useful evidence is water, heat and chemical use per cycle and per circuit, compared with the validated recipe and with production volume.
- Water volume per CIP cycle and per circuit, from flow meters on supply and return
- Supply and return temperature for each wash step
- Conductivity to confirm detergent strength and rinse completion
- Steam or hot water energy per cycle
- Cycle count and duration against the production schedule
How Aqueduct helps
Aqueduct treats each CIP circuit as a measured load, so cycle water and energy sit in the same view as the rest of the plant.
- aQ WaterGuard meters CIP supply and return and flags cycles that use more water than the recipe baseline
- aQ EnergySmart tracks steam or heating energy per cycle against production
- aQ PredictIQ watches pump and valve behavior for drift before a cycle fails
- aQ Assistant answers questions such as which circuit used the most water last week, with the measurements behind it