Scenario

01. Misjudgment
02. Narrow Outlook
03. Oversight of Intermixing Wrong Material (Type 316 stainless steel)
04. Lacked Research in Corrosivity of PCB
05. Production
06. Hardware Production
07. Production of Machine/Equipment
08. Heating Coil for Deodorant Column
09. High-C Stainless Steel (Type 316)
10. Lacked Inspection in Receiving Materials
11. Purchase of Sensitized Material
12. Failure
13. Fracture/Damage
14. Intergranular Corrosion
15. Contamination of PCB to Food Product
16. Bodily Harm
17. Sickness
18. Poisoning

Contamination of rice bran oil with PCB used as the heating medium by leakage through penetration holes at the heating coil tube in deodorization chamber
Case Details 100 Selected Cases


Field Material Science
Author SUZUKI, Tuguo (Former Ajinomoto Co., Inc.)
KOBAYASHI, Hideo (Yokohama National University)