Cleaning in Place or CIP is a technique by which one can clean tanks and lines without dismantling the equipment. With CIP the cleaning can be done faster and with detergents at higher concentration . The CIP is computer controlled by a PLC program. I won’t explain how the program works but only what the output is.
Cleaning is done in several steps. A complete cleaning program contains following steps.
– Flush with water to remove the largest waste
– Cleaning with leach
– Flush with water to remove all leach
– Cleaning with acid
– Flush with water to remove all acid
– Disinfect with peracetic acid and hydrogen peroxide
– Flush with water to remove all products that are left in the tank
In this movie one can clearly see how CIP is done:
The company where I’m doing my research makes mainly fruitjuices, cidre, perry and beverages with high alcohol percentage (>15%).
What do you think I should take into account for optimal cleaning? What are the potential hazards of insufficient cleaning?
Generally spoken, development in metrology always means to extend the degree of information that can be gathered about an object, or to reduce the costs per unit of measured information. This development can be seen today first of all in the following future trends and new applications: • holistic measurement (multi-sensor metrology, integral measurement with CT, 100% testing)
• Micro / Nano metrology
• cost reduction of standard measurements (quicker, cheaper, more robust and easier to use)
The today used tactile methods are to be complemented or partly replaced by optical 3D measurements depending on needed accuracy and surface properties since they offer the possibility to acquire more points in shorter time. These higher point densities will lead to shorter inspection times in association with increased reliability of the acquired information. Challenging is still to raise the robustness of optical metrology towards optical properties of the work piece and to improve the ease of use in a way that even unskilled personnel is able to achieve valid results with small uncertainty.
Unfortunately the subject of my master’s thesis has changed. The new subject of my blog will be cleaning of tanks that are used to make beverage. Cleaning contributes to continuous quality. There are a lot of ways to clean and disinfect a tank. In the company I’m doing my research tanks are cleaned by a cleaning in place system or CIP.
CIP is an easy technique because all the equipment can stay at its place. I will discuss this system in another post.
The purpose of my thesis will be to compose a rinsing array in which one can easily see what kind of rinsing step is needed after production of one beverage before the next.
INITIAL PRODUCTION INSPECTION (IPI)
The Initial Production Inspection checks the materials or components stored by the manufacturer for the production of your order. It also inspects the initial production run.
This type of inspection identifies defective materials or components, as well as deviations from the customer’s specifications at an early stage, thereby minimizing the occurrence of non-conformities and allowing for timely corrections where necessary.
DURING PRODUCTION INSPECTION (DUPRO)
The During Production Inspection or DUPRO checks semi-finished or finished goods and takes place when a minimum 20% of your order has been produced.
A DUPRO improves your control over production, allows timely correction of defects and improvements to quality. It also allows you to verify that your order is produced according to schedule. Corrective action can be taken accordingly.
FINAL RANDOM INSPECTION (FRI)
The Final Random Inspection checks finished products when at least 80% of your order has been produced and export-packed.
Samples are selected at random, according to AQL sampling standards and procedures.
The FRI ensures that the production complies with your specifications and/or the terms of your purchase order or letter of credit.
Reference: – https://www.cotecna-inspection.com/Home/FinalRandomInspection
The rapid development of manufacturing technology during the first half of the nineteenth century was accompanied by, and in fact could hardly have taken place without, a corresponding development in the design and manufacture of measuring machines, standardization of screw threads and indeed such basic things as engineering flat surfaces and straight edges, all of which are essential for precision manufacturing on a large-scale. Among the famous names involved were Henry Maudsley, who made what is probably the first accurate measuring machine, which he called his Lord Chancellor (now in the Science Museum, London) and Joseph Whitworth, who was trained by Maudsley. Whitworth is credited with developing, while working for Maudsley, the technique of making a flat surface by successively scraping off the high spots from three flats one against each other. In due course, Whitworth was able to make steel plates sufficiently flat that they would stick together. He then went on to produce many measuring machines and introduced his system of standard screw threads. By the middle of the nineteenth century engineering metrology had reached a high level with widely available measuring machines that could measure to 0.0001 inch with corresponding flat surfaces and straight edges also at the disposal of engineering works. Added to these was the codification of the principles of engineering design that allowed rigid structures to be made with well-fitting components connected together so that linear and circular movements could be obtained. All of this comes under the name of kinematic design. In the 1840s, the principles of engineering design were even beginning to be taught at Cambridge University by Robert Willis who is thought to have been the person from whom James Clark Maxwell and William Thomson learnt their principles of mechanisms and engineering design.
The next major advance in engineering metrology was made by Carl Eduard Johansson, who in the last decade of the nineteenth century invented the techniques for making accurate gauge blocks by hand lapping using a domestic sewing machine. He made sets of 102 gauges each having an accuracy of 1 μm. Standards of length in the range from 1 to 201 mm with an accuracy better than 10 μm could be obtained by wringing together combinations of two or more individual gauges.
The stage was thus set for the development of modern metrology.
Reference: – http://rsta.royalsocietypublishing.org/content/363/1834/2307.full