Patent ID: 8440876
Filing Date: 2013-05-14
Classification: G21F

Abstract:
1. An incore chemical decontamination apparatus operable for chemically decontaminating a decontamination object of a reactor primary system comprising: a reactor primary system comprising a reactor interior that comprises a core, a core shroud, and a reactor pressure vessel, where a gap is present between the core shroud and the reactor pressure vessel, thereby forming an annulus portion; a decontamination solution supplying device that supplies a decontamination solution to a reactor interior of the reactor primary system, the decontamination solution supplying device comprising a temporary decontamination solution spray ring present in an upper portion of an interior of the reactor pressure vessel; an ozone supplying unit that injects ozone gas to the reactor interior of the reactor primary system; an ozone water generating unit that generates ozone water with injected ozone gas, the ozone water generating unit comprising a jet pump present in an annulus portion between the reactor pressure vessel and a core shroud; and an ozone water circulating unit that circulates the generated ozone water in the reactor primary system through a reactor recirculation system, wherein the ozone supplying device comprises an ozone diffusion pipe for diffusing the ozone gas, the ozone diffusion pipe present at an inlet side of the ozone water generating unit.