Skip to main content
Clean Hydrogen Partnership

Explosion of an autoclave in a laboratory

Event

Event ID
1033
Quality
Description
A researcher was conducting an experiment that involved sawdust being heated at pressure using hydrogen gas in an laboratory-scale autoclave.
The gas leaked from the autoclave during the experiment and ignited, causing injuries to the scientist (cuts, bruises and facial burns).
The explosion caused extensive damage to the building, propelling debris more than 20 metres into a garden area.
Event Initiating system
Classification of the physical effects
Hydrogen Release and Ignition
Nature of the consequences
Macro-region
Oceania
Country
Australia
Date
Main component involved?
Reactor / Oven / Furnace / Test Chamber
How was it involved?
Rupture & Formation Of A Flammable H2-Air Mixture
Initiating cause
Over-Pressurisation
Root causes
Root CAUSE analysis
The INITIATING CAUSE of the leak was probably the over-pressurisation of the autoclave.
From the list of legal modifications requested to the laboratory management, it can be concluded that the ROOT CAUSE was an inadequate risk assessment, a lack of personnel training and of procedures/instructions.

Facility

Application
Laboratory / R&d
Sub-application
Chemistry laboratory
Hydrogen supply chain stage
All components affected
autoclave
Location type
Confined
Operational condition
Pre-event occurrences
The experiment involved sawdust and hydrogen. The goals are unknown.

Emergency & Consequences

Number of injured persons
1
Number of fatalities
0
Post-event summary
light injuries to one worker (cuts, bruises and facial burns).
The explosion caused extensive damage to the building, propelling debris more than 20 metres into a garden area.
Official legal action
Penalty of $1.5 million
The Commonwealth Director of Public Prosecutions has filed four charges , alleging the responsible institution failed in its Work Health and Safety regulation duties.

Lesson Learnt

Lesson Learnt
The legally binding investigation requests included:
- A virtual and augmented reality training package to identify and control work health and safety risks in laboratories, and made publicly available
- Upgrading existing project management systems to include health and safety risk management
- Technical guidance to support hazard identification in high-risk environments for new projects and equipment at CSIRO and across the research industry.

Event Nature

Release type
gas
Involved substances (% vol)
H2 100%
Presumed ignition source
Not reported
High pressure explosion
N
High voltage explosion
N

References

Reference & weblink

JRC assessment