Complete passive cooling system for post-accident reactor cores of large PWR (pressurized water reactor) nuclear power plants

• Main Authors: LING YUN, DONG XIANKANG, XIA ZUFENG, ZHENG MINGGUANG, GE HONGHUI, MIAO FUZU, WANG YONG, YE CHENG, YE YUANWEI, QIU JIAN, CHEN YU, YAN JINQUAN, GU GUOXING
• Format: Patent
• Language: Chinese; English
• Published: 30.10.2013
• Subjects: NUCLEAR ENGINEERING; NUCLEAR PHYSICS; NUCLEAR REACTORS; PHYSICS

The invention relates to the field of special security systems for PWR (pressurized water reactor) nuclear power plants, and specifically relates to a complete passive cooling system for post-accident reactor cores of large PWR (pressurized water reactor) nuclear power plants. The system solves the long-term complete passive waste heat discharge problem of the post-accident reactor cores of the large PWR nuclear power plants. According to the complete passive cooling system for the reactor cores, the top of a shielding workshop adopts a double-layer structure, a double-layer top with a steel concrete composite structure is formed at the upper end of a composite cylindrical steel concrete structure, a middle cylindrical steel concrete channel is formed at the top of the composite cylindrical steel concrete structure, and the double-layer steel concrete top forms a water tank. The volume of the water tank is expanded, and 1500-12000 tons of water required by waste heat removal for 15-40 days after 72 hours is p