Scenario

01. Unknown Cause
02. Occurrence of Unknown Phenomenon
03. No Responsibility of User
04. Planning and Design
05. Poor Planning
06. Poor Design of Manufacturer
07. Failure
08. Fracture/Damage
09. Breakage
10. Bad Event
11. Mechanical Event
12. Bite the Foreign Matter
13. Secondary Damage
14. External Damage
15. Leakage

Gas oil leakage from the tip valve of a bottom-loading tank lorry
Case Details

Knowledge Comment:
A cause is an insufficient strength of a parts of the valve. It is impossible to find the weakness of the valve before a trouble in using.

Field Chemicals and Plants
Author KOBAYASHI, Mitsuo (Office K)
TAMURA, Masamitsu (Center for Risk Management and Safety Sciences, Yokohama National University)