Software Safety Application Applied in Nuclear Power Plant-Using Frame-Based Technique to Derive and Analyze Failure Events for Digital and Control System

Abstract

Techniques for analyzing the safety and reliability of systems which include digital computer are difficult to refer to the intuition. Simulation-based method provides a directly understanding of the dynamic behavior of digital I&C system. Lessons learned from historical accident data are being incorporated into improved prevention, mitigation, and identify hazard. This paper presents and discusses the development of a frame-based technique, including physical frame, logical frame, and cognitive frame, to simulate digital I&C failure events derivation and analysis for generic ABWR. This technique will identify the conflicts among plant status, computer: status, and human cognitive status. In the event derivation, a well-trained operator can take early corrective actions to avoid the system hazard. This paper also discusses the advantage of Simulation- based method, which can investigate more in-depth dynamic behavior of digital I&C system than other approaches. In order to let our experiment be more concrete, we will set up one real simulation platform in the future, and its environmental structure is sketch in the future work of this paper.