Informing hazardous zones for on-board maritime hydrogen liquid and gas systems
- Sandia National Lab. (SNL-CA), Livermore, CA (United States)
The significantly higher buoyancy of hydrogen compared to natural gas means that hazardous zones defined in the IGF code may be inaccurate if applied to hydrogen. This could place undue burden on ship design or could lead to situations that are unknowingly unsafe. We present dispersion analyses to examine three vessel case studies: (1) abnormal external vents of full blowdown of a liquid hydrogen tank due to a failed relief device in still air and with crosswind; (2) vents due to naturally-occurring boil-off of liquid within the tank; and (3) a leak from the pipes leading into the fuel cell room. The size of the hydrogen plumes resulting from a blowdown of the tank depend greatly on the wind conditions. It was also found that for normal operations releasing a small amount of "boil- off" gas to regulate the pressure in the tank does not create flammable concentrations.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- DOT; USDOE
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 1418234
- Report Number(s):
- SAND-2018-0585; 660055
- Country of Publication:
- United States
- Language:
- English
Similar Records
DEMONSTRATION OF THE DWPF FLOWSHEET IN THE SRNL SHIELDED CELLS USING ARP PRODUCT SIMULANT AND SB4 TANK 40 SLUDGE SLURRY
Investigation of low-cost LNG vehicle fuel tank concepts. Final report