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Recalibration of indium foil for personnel screening in criticality accidents.

Recalibration of indium foil for personnel screening in criticality accidents.

Radiation protection dosimetry (2010-11-11)

C Takada, N Tsujimura, S Mikami

要旨

At the Nuclear Fuel Cycle Engineering Laboratories of the Japan Atomic Energy Agency (JAEA), small pieces of indium foil incorporated into personal dosemeters have been used for personnel screening in criticality accidents. Irradiation tests of the badges were performed using the SILENE reactor to verify the calibration of the indium activation that had been made in the 1980s and to recalibrate them for simulated criticalities that would be the most likely to occur in the solution process line. In addition, Monte Carlo calculations of the indium activation using the badge model were also made to complement the spectral dependence. The results lead to a screening level of 15 kcpm being determined that corresponds to a total dose of 0.25 Gy, which is also applicable in posterior-anterior exposure. The recalibration based on the latest study will provide a sounder basis for the screening procedure in the event of a criticality accident.

材料

製品番号

ブランド

製品内容

インジウム, foil, 100x100mm, thickness 0.25mm, as rolled, 99.999%

インジウム, foil, 100x100mm, thickness 0.20mm, as rolled, 99.999%

インジウム, foil, 50x100mm, thickness 0.1mm, as rolled, 100%

インジウム, foil, 10mm disks, thickness 0.75mm, as rolled, 100%

インジウム, foil, 8mm disks, thickness 0.015mm, 99.8%

インジウム, foil, light tested, 50x50mm, thickness 0.05mm, as rolled, 100%

インジウム, foil, 25x25mm, thickness 0.20mm, as rolled, 99.999%

インジウム, foil, 100x100mm, thickness 0.1mm, as rolled, 100%

インジウム, foil, 50x50mm, thickness 0.25mm, as rolled, 99.999%

インジウム, foil, 8mm disks, thickness 0.025mm, 99.8%

インジウム, foil, not light tested, 25x25mm, thickness 0.0025mm, temporary acrylic support, 99.8%

インジウム, foil, 25x25mm, thickness 0.25mm, as rolled, 99.999%

インジウム, foil, 8mm disks, thickness 0.04mm, 99.8%

インジウム, foil, 100x100mm, thickness 0.125mm, as rolled, 99.999%

インジウム, foil, 25x25mm, thickness 0.125mm, as rolled, 99.999%

インジウム, foil, 6mm disks, thickness 1.0mm, as rolled, 100%

インジウム, foil, 50x50mm, thickness 0.1mm, as rolled, 100%

インジウム, foil, 8mm disks, thickness 0.01mm, 99.8%

インジウム, foil, light tested, 100x100mm, thickness 0.075mm, as rolled, 100%

インジウム, foil, not light tested, 50x50mm, thickness 0.04mm, 99.8%

インジウム, foil, 150x150mm, thickness 0.1mm, as rolled, 100%

インジウム, foil, 15mm disks, thickness 1.0mm, as rolled, 100%

インジウム, foil, 4mm disks, thickness 0.015mm, 99.8%

インジウム, foil, 8mm disks, thickness 0.0125mm, temporary acrylic support, 99.8%

インジウム, foil, 8mm disks, thickness 0.02mm, 99.8%

インジウム, foil, 8mm disks, thickness 0.05mm, as rolled, 100%

インジウム, foil, not light tested, 100x100mm, thickness 0.0125mm, temporary acrylic support, 99.8%

インジウム, foil, not light tested, 100x100mm, thickness 0.015mm, 99.8%

インジウム, foil, 25x25mm, thickness 1.0mm, as rolled, 99.999%

インジウム, foil, 25x25mm, thickness 2.0mm, as rolled, 99.999%