Passive heat removal system for nuclear power plant

• Main Authors: Kim, Young In, Jung, Seo Yoon, Yoon, Ju Hyeon, Ryu, Seung Yeob, Ha, Jae Joo, Kang, Kyung Jun, Park, Cheon Tae, Kim, Young Soo, Kim, Keung Koo, Kim, Tae Wan, Shin, Soo Jai, Kang, Han Ok, Bae, Young Min, Moon, Joo Hyung, Han, Hun Sik
• Format: Patent
• Language: English
• Published: 18.06.2019
• Subjects: NUCLEAR ENGINEERING; NUCLEAR PHYSICS; NUCLEAR REACTORS; PHYSICS

The present invention relates to a passive heat removal system which circulates cooling fluid to a steam generator via a main water supply line connected to the lower inlet of the steam generator, and a main steam pipe connected to the top outlet of the steam generator, to remove sensible heat of a nuclear reactor coolant system and residual heat of a core. The heat removal system comprises supplementary equipment for receiving surplus cooling fluid or for supplying supplementary cooling fluid in order to maintain the flow rate of the cooling fluid within a predetermined range. The supplementary equipment comprises: a supplementary tank, installed at a height between the lower inlet and the top outlet of the steam generator; a first connection pipe, connected to the main steam pipe and the supplementary tank; and a second connection pipe, connected to the supplementary tank and the main water supply pipe.