Event
- Event ID
- 1128
- Quality
- Description
A liquid hydrogen trailer was delivering hydrogen at a customer site. The operation was occurring at the correct pressure, when one burst disc failed prematurely. No ignition occurred.
The transfer system was provided of two line, each with its own burst disc. Therefore, followed the protocol, the driver activated the diverter valve, which directed the hydrogen flow to the secondary burst disc line. However, the driver was unable to fully divert the flow due to the presence of a small piece of the ruptured burst disc. He contacted the depot management for direction. The depot management contacted a third party provider, who succeeded to get the diverter to engage fully to the secondary burst disc.
The trailer was taken to the third party provider for the necessary repairs, after having reduced the tank internal pressure.
The source does not tell if the LH2 transfer was completed successfully.- Event Initiating system
- Classification of the physical effects
- Unignited Hydrogen Release
- Nature of the consequences
- leak no ignition
- Macro-region
- North America
- Country
- United States
- Date
- Component involved
- PRD (burst disc)
- Failure mode
- rupture, no ignition
- Initiating cause
- unknown
- Root CAUSE analysis
INITIAL CAUSE was the premature failure of a burst disc, probably due to deterioration or ageing.
ROOT CAUSE unknown- Root causes
- Date entry in HIAD
- 09/09/2024
Facility
- Application
- Hydrogen transport and distribution
- Sub-application
- LH2 tanker
- Hydrogen supply chain stage
- All components affected
burst disc
- Process temperature range [C]
- cryogenic temperature (below -50°C)
- Process pressure range [MPa]
- low to medium pressure (below 2 MPa)
- Location type
- Open
- Location
- highway or similar
- Operational condition
Emergency & Consequences
- Number of fatalities
- 0
- Number of injured persons
- 0
- Currency
- US$
- Property loss (onsite)
- 0
- Emergency action
Following the protocol, the driver activated the diverter valve, re-directing the hydrogen flow to the secondary burst disc line. However, the driver was unable to fully divert the flow due to the presence of a small piece of the ruptured burst disc. He contacted the depot management for direction. The depot management contacted a third party provider, who succeeded to get the diverter to engage fully to the secondary burst disc.
The tanker was taken to the third party provider for the necessary repairs, after having reduced the tank internal pressure.
In-depth data
- Release type
- gas
- Involved substances (% vol)
- H2 100%
- Released amount (kg)
- 272.1552
- Probable IGNITION SOURCE
References
- Sources categories
- PHMSA
- Reference & weblink
Incident I-2015040560 of the US Pipeline and Hazardous Materials Safety Administration PHMSA:
https://portal.phmsa.dot.gov/analytics/saw.dll?Portalpages&PortalPath=%…
(accessed September 2024)
