Event
- Event ID
- 482
- Quality
- Description
- When travelling to a customer, a liquid hydrogen tanker experienced a slight tank pressure increase due to an improper cooling down. The driver was carefully monitoring the pressure and when he observed the pressure rise about the normal level, he called the central logistics contact and reported the situation. The driver was advised to manually operate a hydrogen vent to re-stabilise the internal pressure. After having succeeded in doing so, the driver could restart without no further pressure problem during the trip (approximately 7 hr).
- 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?
- Lh2 Tanker
- How was it involved?
- Manual Venting
- Initiating cause
- Over-Pressurisation (Wrong Operation)
- Root causes
- Root CAUSE analysis
- The INITIAL CAUSE was over-pressurisation of the LH2 tank, which caused an intevention of the drivers to reduce pressure.
The ROOT CAUSE is reported as an inadequate cooling down procedure before filling.
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 LH2 tanker was full
Emergency & Consequences
- Number of injured persons
- 0
- Number of fatalities
- 0
- Environmental damage
- 0
- Currency
- US$
- Property loss (onsite)
- 200
- Property loss (offsite)
- 0
- Post-event summary
- 1.3 kg hydrogen were released.
Event Nature
- Release type
- gas
- Involved substances (% vol)
- H2 100%
- Released amount
- 1.3
- Presumed ignition source
- No ignition
References
- Reference & weblink
Incident I-1996110732 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
- Sources categories
- PHMSA
