Scenario

01. Insufficient Analysis or Research
02. Insufficient Prior Research
03. Insufficient Grasp of Property
04. Poor Value Perception
05. Poor Safety Awareness
06. Inadequate Risk Recognition
07. Other Reaction
08. Planning and Design
09. Poor Planning
10. Poor Design
11. Regular Operation
12. Erroneous Operation
13. Insufficient Pressure Observation
14. Bad Event
15. Chemical Phenomenon
16. Abnormal Reaction
17. Secondary Damage
18. External Damage
19. Explosion
20. Bodily Harm
21. Injury
22. 3 person injured

Explosion in the piping caused due to a back flow of ammonia in the amination of 5-chloro-1,2,3-thiadiazole
Case Details

Knowledge Comment:
When one of two raw materials was stopped during two raw materials was being charged simultaneously, the other raw material might occur back flow, then unexpected reaction might happen. You had to take care of such back flow beforehand !

Field Chemicals and Plants
Author ARAI, Mitsuru (Environmental Science Center, The University of Tokyo)
TAMURA, Masamitsu (Center for Risk Management and Safety Sciences, Yokohama National University)