How has the Federal Aviation Administration contributed to the research associated with licensing digital I&C safety systems at new reactors and as retrofits in current nuclear power plants?

The Federal Aviation Administration (FAA) has developed guidelines (DO-248B and DO-178B) for all software to be installed on aircraft. The FAA has extensive experience with the licensing of flat panels as well as the use of emerging technologies. The NRC has initiated research (e.g. , highly integrated control room research and field programmable gate array (FPGA) research) with a number of external agencies and organizations, including FAA, to develop licensing guidance on the basis of experience gained from other types of mission-critical and safety-significant applications.

Is there a compilation of the full spectrum of possible digital system (hardware and software) failure modes? Isn’t this the necessary starting point to determine if each known failure mode has been adequately addressed in the plant design? To the NRC’s knowledge, all possible digital system failure modes have not been compiled.

This is one focus area of ongoing NRC research into digital system risk. Ideally, a ... more.

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