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Clean Hydrogen Partnership

Road incident of a LH2 tanker

Event

Event ID
1008
Quality
Description
A tanker-tractor carrying liquid hydrogen overturned and lost vacuum insulation. The hydrogen boiled and vented, but there was no ignition.
The potential for fire or explosion, however, led to precautions that did cause considerable disruption: the interstate highway where the accident occurred was closed and nearby homes and businesses were evacuated.
Event Initiating system
Classification of the physical effects
Unignited Hydrogen Release
Nature of the consequences
Leak No Ignition (No additional details provided)
Macro-region
North America
Country
United States
Date
Main component involved?
Cryogenic Insulation Shell
How was it involved?
Rupture
Initiating cause
Impact, Rollover, Crash
Root causes
Root CAUSE analysis
INITIATING cause was a traffic accident. In absence of information on drivers and driver behaviours, the ROOT CAUSE can be attributed generically to a human error (wrong maneuvre)

Facility

Application
Hydrogen Transport And Distribution
Sub-application
LH2 tanker
Hydrogen supply chain stage
Hydrogen Transport (No additional details provided)
All components affected
vacuum thermal insulation
Location type
Open
Operational condition
Pre-event occurrences
The sources do no specify if the tanker was full. It can be nevertheless understood from the statement that the hydrogen boiled off and was release that the tanker was still liquid hydrogen to be delivered to a customer (on their return travel, the LH2 tankers contain normally only could gaseous hydrogen).

Emergency & Consequences

Number of injured persons
0
Number of fatalities
0
Post-event summary
no consequence, but local evacuation

Event Nature

Release type
gas
Involved substances (% vol)
H2 100%
Released amount
3800
Actual pressure (MPa)
1
Design pressure (MPa)
1
Presumed ignition source
No ignition

References

Reference & weblink

Ringland, Safety Issues for Hydrogen Powered Vehicle, SANDIA REPORTSAND94-8226<br />
https://www.osti.gov/servlets/purl/10136126 <br />
(accessed October 2025)

Incident I-1987090240 of the US Pipeline and Hazardous Materials Safety Administration PHMSA: <br />
https://portal.phmsa.dot.gov/analytics/saw.dll?Portalpages&PortalPath=%… />
(accessed September 2024)

JRC assessment