📌 Food Processing Stainless Shaft - Stress corrosion cracking in outdoor UV and rain

Industry: Food Processing · Severity: Critical · Mechanism: Stress corrosion cracking · Risk: 91/100

🧾 Summary

A stainless shaft used in a food processing application shows stress corrosion cracking risk after exposure to outdoor UV and rain. The design review focuses on material pairing, geometry, coating coverage, inspection access, and realistic validation testing.

⚠️ Design Risk

Likely weak points include local electrolyte retention, incompatible material pairing, coating discontinuities, trapped debris, and missing acceptance criteria for corrosion validation.

🛠️ Recommended Controls

Recommended controls: cyclic corrosion validation, drainage path redesign, and sacrificial element review. Add drawing notes, supplier evidence requirements, and a validation plan that reflects the expected service environment.

🎓 Learning Notes

Learners should identify the corrosion mechanism, estimate severity, and decide whether prevention should come from material change, coating change, geometry change, sealing, isolation, or inspection planning.