Development and Use of the UK Railway Network's Safety Risk Model

摘要

The Rail Safety and Standards Board (RSSB) has a responsibility to lead and develop long term safety strategy and policy for the UK mainline railway network. One of the key objectives of the strategy is to reduce risk on the railway network by controlling the hazardous events and the precursors to the hazardous events that can occur. It is essential, however, that the control of the risk is carried out in an open and explicit manner, so that end users in the industry can be assured that the controls imposed are effective and do not cost disproportionately more than the benefits they provide. The Safety Risk Model (SRM), which is a detailed fault tree and event tree analysis model, has been developed by RSSB to provide a structured representation of the cause and consequences of potential accidents arising from the operation and maintenance of the railway. The paper describes how the SRM has been developed up to the issue of version 3 in February 2003 and the plans for future development.