skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Risk assessment of indoor refueling and servicing of CNG-fueled mass-transit buses. Phase 2. Final report. Volume 2. Fault tree models, December 1988-November 1990

Abstract

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.

Authors:
;
Publication Date:
Research Org.:
Science Applications International Corp., McLean, VA (USA)
OSTI Identifier:
5964993
Report Number(s):
PB-91-161372/XAB
CNN: GRI-5087-254-1621
Resource Type:
Technical Report
Resource Relation:
Other Information: See also Volume 1, PB--91-161364
Country of Publication:
United States
Language:
English
Subject:
03 NATURAL GAS; BUSES; MAINTENANCE; MAINTENANCE FACILITIES; FIRE HAZARDS; NATURAL GAS; IGNITION; ACCIDENTS; COMBUSTION; COMPRESSED GASES; DIESEL FUELS; FAULT TREE ANALYSIS; FUELS; MASS TRANSIT SYSTEMS; PROBABILITY; PROGRESS REPORT; RISK ASSESSMENT; SAFETY; VENTILATION; CHEMICAL REACTIONS; DOCUMENT TYPES; ENERGY SOURCES; FLUIDS; FOSSIL FUELS; FUEL GAS; GAS FUELS; GASES; HAZARDS; OXIDATION; PETROLEUM PRODUCTS; SYSTEM FAILURE ANALYSIS; SYSTEMS ANALYSIS; THERMOCHEMICAL PROCESSES; TRANSPORTATION SYSTEMS; VEHICLES; 030500* - Natural Gas- Health & Safety

Citation Formats

Friedman, D M, and Farkhondehpay, D. Risk assessment of indoor refueling and servicing of CNG-fueled mass-transit buses. Phase 2. Final report. Volume 2. Fault tree models, December 1988-November 1990. United States: N. p., 1990. Web.
Friedman, D M, & Farkhondehpay, D. Risk assessment of indoor refueling and servicing of CNG-fueled mass-transit buses. Phase 2. Final report. Volume 2. Fault tree models, December 1988-November 1990. United States.
Friedman, D M, and Farkhondehpay, D. Wed . "Risk assessment of indoor refueling and servicing of CNG-fueled mass-transit buses. Phase 2. Final report. Volume 2. Fault tree models, December 1988-November 1990". United States.
@article{osti_5964993,
title = {Risk assessment of indoor refueling and servicing of CNG-fueled mass-transit buses. Phase 2. Final report. Volume 2. Fault tree models, December 1988-November 1990},
author = {Friedman, D M and Farkhondehpay, D},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {8}
}

Technical Report:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that may hold this item. Keep in mind that many technical reports are not cataloged in WorldCat.

Save / Share: