Event
- Event ID
- 560
- Quality
- Description
Three workers were asphyxiated when argon and hydrogen gas leaked from pipes they were installing on an aromatics plant being built on a cracking complex.
- Event Initiating system
- Classification of the physical effects
- Unignited Hydrogen Release
- Nature of the consequences
- leak no ignition
- Macro-region
- Asia
- Country
- Japan
- Date
- Component involved
- pipe (generic)
- Failure mode
- erroneous release, no ignition
- Initiating cause
- inadequate or no purge
- Root CAUSE analysis
Gas leakage causing asphyxiation
- Root causes
- Date entry in HIAD
- 01/01/2020
Facility
- Application
- Petrochemical industry
- Sub-application
- Hydrocracking process
- Hydrogen supply chain stage
- Process temperature range [C]
- ambient temperature (-50°C to +50°C)
- Process pressure range [MPa]
- medium to high pressure (10 to 50 MPa)
- Location type
- Confined
- Location
- industrial area
- Operational condition
- Pre-event occurrences
Workers were installing new pipes.
Emergency & Consequences
- Number of fatalities
- 3
- Number of injured persons
- 0
- Post-event summary
Three workers asphyxiated
In-depth data
- Release type
- gas mixture
- Involved substances (% vol)
- H2
Ar - Release temperature [°C]
- 25
- Probable IGNITION SOURCE
References
- Sources categories
- CSB
- Reference & weblink
source lost
