Event
- Event ID
- 734
- Quality
- Description
- When waste alkali solution was taken out of dumper trucks into a waste liquid storage tank, a reaction occurred in the tank. As a result, the solution in the tank foamed over it, and reached an incinerator burning waste wood, when all the waste solution got in flames.
The cause of the incident was the waste alkali solution with heavier specific gravity than water, which sank in a mass and came into contact with aluminium powder that had accumulated at the bottom the tank. This resulted in generation of hydrogen gas, which was ignited by fire at the incinerator. - Event Initiating system
- Classification of the physical effects
- Hydrogen Release and Ignition
- Nature of the consequences
- Fire (No additional details provided)
- Macro-region
- Asia
- Country
- Japan
- Date
- Root causes
- Root CAUSE analysis
- The INITIATING CAUSE was the accidental generation of hydrogen gas, ignited by fire at the incinerator.
The ROOT CAUSE was identified by the orignal report in:
(1) Organization factor
(2) Design mistake
(3) Prior assessment insufficient.
Facility
- Application
- Chemical Industry
- Sub-application
- Chemical waste storage and disposal
- Hydrogen supply chain stage
- All components affected
- iquidstorage tank, alkaly tank
- Location type
- Unknown
- Location description
- Industrial Area
- Operational condition
Emergency & Consequences
- Number of injured persons
- 0
- Number of fatalities
- 0
- Currency
- Yen
- Property loss (onsite)
- 21730000
- Post-event summary
- 21.73 million yen worth of property damage
Event Nature
- Release type
- Gas-liquid mixture
- Involved substances (% vol)
- H2,
KOH solution,
Al - Presumed ignition source
- Open flame
References
- Reference & weblink
Orignal source lost. RISCAD is closed.
JRC assessment
- Sources categories
- RISCAD
