Non-Destructive Tests and Measurements Performed on a Nuclear Reactor under Operation

摘要

Experience is summed up gained in the development of the in-reactor inspection method on the A-1 nuclear power plant reactor in Czechoslovakia. The first testing equipment specially developed in Czechoslovakia for this purpose and used for the in-service inspection of the nuclear reactor was the equipment for measuring calandria wall thickness by ultrasonic waves. Some in-reactor components were inspected visually using a special optical equipment (introscope) having an overall length of 23 m. The ultrasonic examination of one circumferential weld of the A-1 reactor pressure vessel was carried out by a currently used manual method. Experience gained with safety and occupational hygiene in in-service inspections of the A-1 nuclear power plant is described. (Atomindex citation 08:347896)