The portable laser device of coating removal developed for th e purpose of on-site removal of paint of the bridge in struct ural engineering field may be applicable as decontamination t echniques of nuclear power plant decommissioning because of h igh processing speed and little amount of secondary waste. Th en, in order to check the applicability of the portable laser device to the decontamination technique, fundamental examina on of removal of the stainless steel surface was performed....
英字タイトル:
Study on Applicability of Laser Coating Removal Technique to Nuclear Power Plant

We are developing a radiation dose rate evaluation tool for work areas in the primary containment vessel (PCV) of the Hamaoka BWR plant in order to reduc e radiation exposure to workers. The evaluation tool is composed of two calculation codes; a water chemistry code and a radiation dose rate code. The rad iation dose rate calculates radiation maps of the work areas in the PCV of Hamaoka plant. We compared measured values with calculated values in order to i mprove the accuracy of the tool. In order to dem...
英字タイトル:
Development of Evaluation Tool of Radiation Dose Rate in Primary Containment Vesselfor Reduction of Radiation Exposure

We have developed a calculation tool for the radiation distribution of the work areas in the primary containment vessel (PCV) of Unit 3, 4 and 5 at Hamaoka NPS. This tool can be used to evaluate quantitatively the effects of the dose reduction methods by water chemistry control or radiation management. This tool is composed of two calculation codes; water chemistry code (ACTTUBE), radiation dose rate code (RADTUBE). ACTTUBE calculates the piping dose rates based on mass balance of the radionuclides in...
英字タイトル:
Development of Evaluation Tool for Radiation Distribution Aimed at Dose Reduction at Nuclear Power Plant