What does hygienic design mean for plant and component manufacturers?
In the food industry, regulations require equipment that is easy to clean. In addition, cost and environmental aspects, which can be affected by the design of installations suitable for cleaning, are playing an increasingly important role. For this reason, the topic of “hygienic design” plays an important role for plant and component manufacturers.
Working in accordance with hygienic design, plant and component manufacturers must adhere to the following criteria:
- Use of physiologically safe materials (316L stainless steel, PEEK, etc.).
- High surface quality (Ra ≤ 0.8 µm)
- Use of FDA-listed materials
- Use of gaskets suitable for the process
- Gap-free design of the measurement technology/plant
- Rounded angles, no corners or edges
- Assembly of measuring technology without voids or gaps
- Cleanable and sterilizable (suitable for CIP/SIP)
- Leakage hole on the process connection to indicate seal failure
Regardless of the plant design and components of the measurement technology, how the measurement technology is installed in the plant is extremely important. Because even a hygienically certified sensor can be installed in such a way that the entire measuring point becomes unhygienic. The following aspects are particularly important in the context of hygienic design:
- Which process connection is used?
- How is the measuring technology installed (for example: cavityless, ring gapless, self-draining)?
- At what angle to the product stream is the measuring technology installed?