Reactor containment vessel, reactor containment facility having the reactor containment vessel, and methods of construction thereof

摘要

PPROBLEM TO BE SOLVED: To downsize a reactor building by compactly constructing a reactor containment facility including a reactor containment vessel and a biological shield wall. PSOLUTION: In a factory, the reactor containment vessel 4 is completed by composing the upper end of a ring girder 1 in the reactor containment vessel 4 of a stainless steel board 1a and the rest of the ring girder 1 of a coated carbon steel board 1b, composing the upper and lower ends of the first tier 2 of the reactor containment vessel 4 of a stainless steel board 2a and the rest of the first tier 2 of a coated carbon steel board 2b, composing the lower end of the second tier 3 of the reactor containment vessel 4 of a stainless steel board 3a and the rest of the second tier 3 of a coated carbon steel board 3b, stacking the ring girder 1, the first tier 2 and the second tier 3 of the reactor containment vessel 4 one by one together with inside molds 6a, 6b and 6c and outside molds 7a, 7b and 7c of a biological shielding wall 5 around the ring girder 1, the first tier 2 and the second tier 3 and welding the stainless steel boards to each other in every stack of them on weld lines 8 and 9 one by one and the mold of the biological shielding wall 5 is likewise completed by welding the upper and lower ends of each of the molds mentioned above to each other. PCOPYRIGHT: (C)2005,JPO&NCIPI