About the program

Pro-active mitigation and avoidance

This R&D program aims at gaining better understanding and possibility to pro-actively minimize interference on nuclear power plant (NPP) operation due to issues in the external grid. The benefits include revised safety and assessed safety margins, avoidance of extended outages and maintenance periods, fewer unplanned shut-downs, and lower cost of component replacement.

The proposed activities include survey of operational events from the off-site power system with focus on retrofit of mitigating actions, methodologies to verify that the outer grounding line network in the nuclear power plants is intact, a generic lightning model of the Nordic nuclear power plants to study how lightning strikes at overhead power lines are transmitted on-site, survey on new electrical devices with different technology compared to existing electrical devices, and sub-synchronous resonance (SSR) phenomenon and modelling combined with hybrid simulations.