Novel triple containment for coping with severe accidents

• Main Authors: XIA ZUFENG, WANG XIAOWEN, CHENG SHUJIAN
• Format: Patent
• Language: English
• Published: 16.09.2015
• Subjects: NUCLEAR ENGINEERING; NUCLEAR PHYSICS; NUCLEAR REACTORS; PHYSICS

The invention belongs to the technical filed of nuclear power security, and concretely discloses a novel triple containment for coping with severe accidents. A prestressed concrete containment is fixed on a containment baseboard, a steel containment is covered on the prestressed concrete containment, a reinforced concrete shield workshop is covered outside the steel containment, the middle portion of the cylinder wall of the reinforced concrete shield workshop is provided with a gas inlet, the center of the tapered roof of the reinforced concrete shield workshop is provided with a gas outlet, and an annular containment cooling water tank is arranged outside the roof; and a framework structured containment internal structure is arranged in the prestressed concrete containment, and a basalt core melt foundation bed is arranged on the containment baseboard in the prestressed concrete containment through a high temperature resistant tungsten alloy steel pallet. The containment adopts a prestressed concrete containment obtained through tensioning after adopting double-layer vertical and double-layer circumferential prestressing tendon, and the internal pressure bearing ability of the prestressed concrete containment is above 3 times that of containments designed at present, so the cracking of the prestressed concrete and radioactive release to environment due to the cracking are avoided.