The Ra value describes the average roughness of a surface, but it does not alone summarize the sanitary condition of an equipment. Welded regions, corners, connections, and hard-to-reach points need to be part of the inspection.
A Complete Assessment
The criterion must be documented and compatible with the process risk.
- Measurements at representative points
- Visual inspection and weld treatment
- Material and consumable certificates
- Protection of surfaces during manufacturing and transport
