An Intelligent Railway Safety Risk Assessment Support System for Railway Operation and Maintenance Analysis

Abstract

Abstract:The paper presents the development of an intelligent railway safety risk assessment based support system. The proposed method can evaluate qualitative and quantitative safety risk data and information in a uniform manner for railway safety risk assessment. It permits the safety risk analysts to assess the risks associated with the failure modes directly using linguistic terms, i.e. qualitative descriptors. The proposed intelligent railway safety risk assessment system is capable of assessing the risks at component level, sub-system level and system level. It can assess not only "hard" risks (e.g. risks of a system), but also "soft" risks (e.g. staff risks). The outcomes of safety risk assessment are represented in two formats, risk score and risk category with a belief of percentage, which provide very useful safety risk information to railway designers, operators, engineers and maintainers for risk response decision making. An illustrative example of staff risk assessment in a railway depot is used to demonstrate the proposed intelligent railway safety risk assessment system. The results indicate that by using the proposed system, risks associated with a railway depot can be assessed effectively and efficiently.

Risk Management in Railway During Operation and Maintenance Period: A Literature Review

“…After a qualitative descriptor, MF and the rule base are set, the system is ready to process the safety risk analysis. This system consists of a number of page tabs to deal with setting MF parameters, developing base rules, selecting fuzzy operations, the results of the process and display of the final results [14].…”

Assessment of the permissibility of the risk of changing the strategy for the maintenance of rail vehicles based on the example of a selected locomotive type

“…This model can be used to assess the risk involved in the hazards concerning the operation of rail vehicles 30 and the hazards relating to the performance of shunting operations within railway stations. [31][32][33] Another method presented in the writings on the subject, which can be used to assess the risk involved in means of transport, is the risk score method which is based on the ETA. Jablon´ski 34 presents its application to determine the probability of the occurrence of a cracking of the wheel set axis of a freight wagon and an assessment of the related risk of hazards.…”

Оптимізація Конструкції Розв’язок Підходів Залізничного Вузла Для Умов Швидкісного Руху Поїздів

“…В роботі [13] подано систему розумної оцінки залізничних ризиків з використанням підходу нечіткого міркування. Система імітує здатність розуму людини ефективно використовувати способи міркування.…”