Hygienic Conveying

How to Convey Hygienic Sensitive Bulk materials

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As the cleaning method determines the design of the key components, it must always be decided at the planning stage which cleaning method is to be used for the individual system sections. Special attention must be paid to the separation points between the areas that are cleaned with wet cleaning methods and those that are cleaned with dry methods. It is essential that moisture and water are kept away from dry cleaning areas. During manual cleaning (dry or wet), attention must be paid to ensure easy accessibility, simple dismantling and cleaning and easy inspection of the components. During automatic wet cleaning the component version must ensure that there are never any product or moisture residues.

The Design of the plant in accordance with EHEDG guidelines and the use of EHEDG–certified components is the prerequisite for a successful and reproducible cleaning quality. The most frequent error made during plant design is the use of unsuitable components next to the dry–wet separation points. For example, CIP–compliant components are often installed together with unsuitable flexible connections, or the connections for measuring instruments are incorrectly planned. Frequently the platforms that ensure easy access to the components for manual cleaning are often missing. During manual cleaning itself, it is often observed that cleaning personnel do not handle the components correctly. Fully automatic CIP is also advantageous in this respect, as the components are only opened occasionally.

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* The author is Product Manager Components of Coperion, Weingarten, Germany. Contact: Phone +49-751-408398