철도 운행장애 정보기반 국가철도 RAMS 목표 할당 시스템 제안

초록

According to the Korean Railway Safety Act, railways must achieve a specified safety target. The government safety target must be aligned with those of individual agencies, and reliability must be quantitatively managed down to the individual component level. Operating agencies are required to purchase and maintain rolling stock and equipment in accordance with safety management system technical standards. For example, the European Union annually defines common quantitative safety targets for major rail lines across member countries, and it mandates compliance to achieve the established safety goals. While these efforts are standard in some parts of the world, Korea trails behind in the adoption of these methods and the oversight of safety programs. Further, Korea needs to establish a system that links and manages safety targets with government agencies, also in partnership with the existing global framework. To this end, this paper develops a quantitative RAMS (Reliability, Availability, Maintainability, and Safety) target-setting logic based on failure statistics to link and manage government agency and railway equipment targets. A hierarchical reliability calculation system is proposed that allows for input of reliability data for each railway equipment component. As a result, a program is developed to manage reliability targets in an iterative manner, allowing for user-specific adjustments to the failure rate of each equipment component. Ultimately, this program is expected to aid in the development of rigorous, data-driven rail safety standards in Korea.

키워드