Clean-in-place systems remove soil or unwanted residue from a processing line without the burden of disassembly, while the plant continues to operate. This effects the plant's overall output and efficiency.
Clean-in-place (CIP) systems remove soil or unwanted residue from a processing line without the burden of disassembly, often while another portion of the plant continues operating. The quality of the CIP system’s design affects plant efficiency and output. Holistic CIP system design considers:
- Temperature: The optimal CIP temperature depends on the type of soil and the chemicals used to clean the equipment. In food processing, temperatures are often 145-165 degrees Fahrenheit. In pharmaceutical processes, they range from 160-210 degrees Fahrenheit.
- Action: Similar to the scrubbing action in manual cleaning, a cleaning fluid flow rate in sanitary tubing must achieve a minimum velocity of 5 feet-per-second for enough turbulence to clean.
- Chemical concentration: Using more of a chemical than the manufacturer recommends does not provide a more thorough cleaning; it increases costs and can damage equipment.
- Time: A well-designed CIP system removes soil in the shortest possible time frame to adequately clean the equipment.
- Water: Water consumption can be significantly reduced by evaluating effluent for areas where water can be treated and reused or processes can be combined.
- Individual: CIP systems often run on the third shift, where turnover is usually highest, staff often has the least experience and there may be a language barrier. Training these individuals to properly troubleshoot the system will avoid workarounds and maintain smooth, continuous operation of the plant.
- Nature of soil: Understanding the composition of a food or pharmaceutical product will allow selection of the right temperature, chemical, time and action to remove it from the equipment.
- Surface to be cleaned: While the majority of tubing is stainless steel, gaskets and o-rings may be made of other materials that can be damaged by certain cleaning chemicals and temperatures. The degree f polish on stainless steel also affects how easily the surface is cleaned.
As an objective, design-build contractor, Burns & McDonnell designs CIP systems with a holistic processing solution that best fits the client’s needs.
For more information, contact Elaine Tobias York, 816-822-3572.