Tip 2: How to Make Your CIP and COP Systems Work For YouHarvill Industries
This is part 2 of an 8 part series of engineering tips on how to get the most out of clean-in-place (CIP) & clean-out-of-place (COP) systems for the sanitary engineering industry.
Typical Three Tank CIP System *Printed as of Food Safety magazine
Tip 2. Use vessels that are right for the process.
The old adage, “You can’t sanitize a dirty surface,” applies to CIP processes and as such, vessels used should be of sanitary design. Tank sanitary design includes smooth and continuous welds, self-draining and internal surfaces that are round or tubular, not flat, with no ledges or recesses, to prevent accumulation of soil that cannot be removed. It is important that tanks are properly vented, are self-draining and that the floor of the vessel allows for fast flushing. Figure 1 aptly illustrates the contamination that can occur when equipment components such as coupling is not of sanitary design.
If the only treatment materials that will be used in or flow through the system during CIP are rinse water and cleaning solution, a two-tank system will likely be adequate. If your process requires an additional function, such as an acid wash or retention of final rinse water, a three-tank or return pump system is warranted. Since CIP systems vary in application and sophistication, check with CIP equipment manufacturers to ensure that a system is right for your operation.
Also make sure that there are a sufficient number of tanks for the cleaning solutions used and that they can contain sufficient quantity, about 50 percent more solution, than required to avoid running out of solution. Similarly, check that the spray balls used to deliver the cleaning agents to the interior surfaces of the equipment are actually appropriate for the tanks in which they are employed. Spray balls are designed to work within specified conditions and parameters involving flow rate, pressure and shape of the tank(s) in the circuit. If the spray balls are tampered with, damaged or not maintained in good condition, the distribution of the cleaning and sanitizing chemicals will be ineffective.
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