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This data is from the European Hydrogen Incidents and Accidents database HIAD 2.1, European Commission, Joint Research Centre.

Release on a Flange of a Hydrogen Storage Tank
A hydrogen leak occurred on a flange located on a pipe coming from the hydrogen storage tank. The staff was confined and the Internal Operation Plan was launched.Helium was injected in the tank and an operator equipped with a breathing apparatus closed the valve between the tank and the leaking flange. No one was injured and no damages occurred.
Event Date
February 1, 2006
Record Quality Indicator
Region / Country
Event Initiating System
Classification of the Physical Effects
Nature of the Consequences
Cause Comments
Immediate cause was a leaking flange.
Facility Information
Application Type
Application
Specific Application Supply Chain Stage
Components Involved
Production of space booster
Storage/Process Medium
Location Type
Location description
Industrial Area
Operational Condition
Currency
Event Nature
Emergency Action
The staff was confined and the Internal Operation Plan launched.Helium was injected in the tank and an operator equipped with a breathing apparatus closed the valve between the tank and the leaking flange.
Emergency Evaluation
A computer simulation showed that in case of explosion the thermal and over-pressure damage would be limited to few meters.
Release Type
Release Substance
Hydrogen Release Concentration (%)
100.00
Release Rate (kg/s)
0.01
Detonation
No
Deflagration
No
High Pressure Explosion
No
High Voltage Explosion
No
Source Category
References
References

Original description of the event in ARIA

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