Abstract
Hazard analysis is a widely-used technique to achieve the system/software safety by analyzing hazards systematically. While programmable logic controller-based digital instrumentation and control systems have been replaced with field programmable gate array (FPGA)-based ones, hazard analysis on FPGA software as well as FPGA-based controllers becomes one of the prerequisites of operational approval. The NUREG/CR-6430 provides applicable processes/methods of software safety hazard analysis (e.g., guide phrases and analysis techniques). Hazard analysis of FPGA software is different from typical software hazard analysis, since the FPGA is a hardware-based platform. This paper proposes a refined process and guide phrases at the software requirement analysis part in NUREG/CR-6430, tailored for the new target - FPGA software. We performed hazard analysis on FPGA software for a prototype version of an FPGA-based controller in Korea to show feasibility of the refined process and guide phrases.
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