CIP or Cleaning In Place systems are adopted by many process industries. Use of automated cleaning cycles in vessels and pipework delivers major improvements in productive output by reducing downtime and labour costs. Equally important is the positive impact on safety through reduced operator intervention and improved hygiene through use of high temperature, high pressure cleaning. These benefits exceed consumer expectations in meeting health and safety objectives.
Most sterilising and cleaning liquids for a CIP system contain alkali, acid solutions or steam. The cleaning cycle will provide accurate pre-mixed doses to the tank or vessel at given schedule therefore offering consistent hygiene, limited down time and minimal water and cleaning doses. Usually a clean water rinse, sometimes hot, will begin and follow the cleaning operation to flush any produce, detergents, sterilisers, alkali and acids completely from the vessels and pipework.
CIP systems may use a single pass operation, where the vessel is cleaned and cleansing liquid automatically sent to drain pipework. Re-circulation systems using cleaning solution, detergents and sterilizing liquids send the cleansing solution back to the holding tank and a continuous pass will occur for a given pre-determined period. Large process plants reap the advantages of recycling the cleansing solution with considerable savings and environmental impact benefits.
Using 3 or more vessel process systems; the cleaning cycle is commonly automated by the first vessel loading ingredient or materials, the second processing the recipe and ingredients whilst the third, following a successful batch, will begin the clearing cycle. The continuous rotation of these processes obviously forms a constant production technique, with quality guarantees for the industry involved and for the consumers. Manual or PLC based systems are available, where a PLC system can be fully automated minimising any human error and dramatically improving daily output. The controls, monitoring and relay systems are often remotely displayed by plant operator, some have text message and audible warning systems should sensors detect a problem. Multiple vessel system solutions can obviously offer advantageous volume pricing benefits and pioneering hygiene results.