Research and Application of Vacuum Exhaust Method in Primary Loop of Ling’ao Nuclear Power Plant

This paper adopts the method of vacuum exhaust in the primary loop of PWR nuclear power unit. Primary loop of PWR Ling'ao Nuclear Power Plant is vacuum exhausted after refueling overhaul, and the dynamic exhaust process is cancelled. The results show that the requirements of the air content of the primary circuit can be satisfied quickly, shortening the overhaul schedule, and improving the economy and safety of the power station.