Title:
【発明の名称】原子炉の圧力容器内に配置された燃料棒の被覆物における漏洩を検知する装置
Document Type and Number:
Japanese Patent JPS5822996
Kind Code:
B2
Abstract:
In the locating of a leak at the level of the fuel rods in a nuclear reactor, after removal of the cover and with the use of a water shield together with a pressure vessel on which a number of vertical fuel assemblies are arranged and located by their upper end for injecting a fluid under pressure the bell being put in place on the core grid and a fuel assembly by means of the pressure fluid injection so that cooling water present in the fuel assembly is prevented in known manner from leaving, the improvement whereby (a) a substantial part of the fuel assembly cooling water enriched in fission prods. is extracted from the fuel assembly by pumping, (b) the water pumped is traversed and entrained by a jet of gas circulating in closed circuit at a level above the bell, and also passing through a measuring chamber for measuring the radioactivity, the fission gases being released in most of the cooling water enriched to a pressure of water less than the lowest water pressure in the bell.
Inventors:
ROORANDO DEIRERIDO
ANCHI SUBANTO
SUTEIGU UEREN
ANCHI SUBANTO
SUTEIGU UEREN
Application Number:
JP12084175A
Publication Date:
May 12, 1983
Filing Date:
October 08, 1975
Export Citation:
Assignee:
ASEA ATOM AB
International Classes:
G21C17/07; G21C17/04; (IPC1-7): G21C17/06
Attorney, Agent or Firm:
Asamura Akira