WIT Press


Time-varying Failure Rate For System Reliability Analysis In Large-scale Railway Risk Assessment Simulation

Price

Free (open access)

Paper DOI

10.2495/CR040321

Volume

74

Pages

10

Published

2004

Size

233 kb

Author(s)

H. Zhang, E. Cutright & T. Giras

Abstract

For large-scale dynamic railway traffic control systems, the reliability analysis and risk assessment are important for system evaluation, decision making and enforcement of performance-based safety-critical standards. The Axiomatic Safety- Critical Assessment Process (ASCAP) developed at the University of Virginia’s Center of Rail Safety-Critical Excellence provides a dynamic Monte Carlo simulation methodology for the quantitative risk assessment of large-scale rail systems. An appropriate reliability model is critical for effective and valid ASCAP simulation results. In reliability engineering, it is known that the electrical and mechanical equipment, such as switch machines, track circuits and trip-stops in railway infrastructure, usually manifest deterioration and/or impro

Keywords