Alternative Off-Site Power Supply during Extended Station Blackout for Future Nuclear Power Plants in Indonesia

The study explores the diverse and flexible coping (FLEX) strategy on a conventional large nuclear power plant connected to an alternative off-site power. Indonesia is one of the countries with the highest natural hazards in the world, so the newly-built NPPs are susceptible to station blackout (SBO) accidents one of the highest contributors to the core damage frequency (CDF). The study proposes a dedicated, independent, and direct electrical connection between a pressurized water reactor to a nearby hydropower plant as the alternative off-site power supply during the extended SBO. The study shows that the proposed strategy successfully reduces the SBO frequency by 90 - a net 33 CDF reduction without a major modification to the existing PWR design. © Published under licence by IOP Publishing Ltd.