NUCLEAR REACTOR STRUCTURE

PURPOSE:To provide diaphragm floor of reactor structure which makes simplifying design possible improving placing capability, shortening construction period and enhancing strength and improve total reactor structure strength including reinforced concrete building. CONSTITUTION:A diaphragm floor 2 is constituted of a layer of steel plate 6 for diaphragm floor and reinforcement steel part 7 for diaphragm floor which reinforces the steel plate 6 for diaphragm floor. The outer end and inner end of the steel plate 6 for diaphragm floor and the reinforcement steel part 7 for diaphragm floor are welded to an inner wall attachment steel plate 8 attached to the inner wall of reinforced concrete containment 1 and pedestal 5, respectively.