Risk assessment of indoor refueling and servicing of CNG-fueled mass transit buses. Phase 2. Final report. Volume 1, December 1988-November 1990
A probabilistic risk assessment (PRA) was conducted to estimate the risk of accidental ignition (and consequent fire/explosion) from indoor refueling and servicing of compressed natural gas-fueled mass transit buses. Five scenarios were considered. Risks associated with each scenario for the refueling equipment, bus system, refueling/servicing facility, and refueling process were evaluated using event and fault tree analyses. The study considered the initiating events to be gas leakage and the presence of ignition sources, resulting in the top event (ignition). Using component reliability data, the probability of incident was estimated. A publicly available database of safety-related information on natural gas vehicles was developed to support the PRA. The results using U.S. data suggest a probability of incident per refueling between 3.27E-9 and 6.87E-9. the variation depends on certain characteristics of the refueling/servicing station (e.g., outdoor refueling and indoor servicing, combined diesel and CNG refueling, isolated CNG refueling, etc.), the refueling mode, and other factors.
- Research Organization:
- Science Applications International Corp., McLean, VA (USA)
- OSTI ID:
- 6126288
- Report Number(s):
- PB-91-161364/XAB; CNN: GRI-5087-254-1621
- Resource Relation:
- Other Information: See also Volume 2, PB--91-161372
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BUSES
MAINTENANCE
MAINTENANCE FACILITIES
FIRE HAZARDS
NATURAL GAS
IGNITION
ACCIDENTS
AUTOMOTIVE FUELS
COMBUSTION
COMPRESSED GASES
DIESEL FUELS
MASS TRANSIT SYSTEMS
PROBABILITY
PROGRESS REPORT
RISK ASSESSMENT
SAFETY
VENTILATION
CHEMICAL REACTIONS
DOCUMENT TYPES
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
HAZARDS
OXIDATION
PETROLEUM PRODUCTS
THERMOCHEMICAL PROCESSES
TRANSPORTATION SYSTEMS
VEHICLES
030500* - Natural Gas- Health & Safety