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Post-Incident Safety Analysis of an Automatic Train Protection System

[+] Author Affiliations
Peter T. Katsumata

Booz Allen Hamilton, Los Angeles, CA

Paper No. IMECE2002-32448, pp. 21-28; 8 pages
doi:10.1115/IMECE2002-32448
From:
  • ASME 2002 International Mechanical Engineering Congress and Exposition
  • Safety Engineering and Risk Analysis
  • New Orleans, Louisiana, USA, November 17–22, 2002
  • Conference Sponsors: Safety Engineering and Risk Analysis Division
  • ISBN: 0-7918-3647-9 | eISBN: 0-7918-1691-5, 0-7918-1692-3, 0-7918-1693-1
  • Copyright © 2002 by ASME

abstract

Rail is used as a form of transportation by millions of people each day. Many of these rail transit systems utilize automatic operation. Automatic operation of rail transit vehicles is provided by an Automatic Train Control (ATC) system, which is typically partitioned into three subsystems: Automatic Train Protection (ATP), Automatic Train Operation (ATO), and Automatic Train Supervision (ATS). This paper discusses the results of a post-incident safety analysis performed on an ATP system. A Fault Tree Analysis (FTA) was performed on a vehicle ATP subsystem following several incidents involving a compromise in system safety. The results of the FTA showed that the vehicle ATP subsystem did not meet the “fail safe” design criteria. This paper uses the results of the FTA to identify possible safety improvements.

Copyright © 2002 by ASME
Topics: Safety , Trains

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