Compound radiation source intensity backstepping method and system for point source-body source combination of nuclear power plant
A technology of compound radiation and radiation source, which is applied in the field of strong inversion of compound radiation source and system of combination of point source and body source in nuclear power plants, which can solve the problem that basic information affects the accuracy and practicability, the gap between actual values is large, and the staff is Issues such as increased risk of exposure
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[0195] Taking room NB281 in the nuclear island of Daya Bay Nuclear Power Plant Unit 1 as the experimental object, this room is used to place radioactive waste water collection barrels in the nuclear island control area. 0.7586E+10MeV / cm 3 .s (or 4.2898E+14 / s). The upper part of the cylindrical container is simplified as two point sources, the lower part is simplified as one cylindrical source, and a detector is set every 50cm in the middle part of the waste water collection bucket, a total of five detectors, each detecting The detection values obtained by the detector are respectively 2.032mSv / hr, 0.685mSv / hr, 0.255mSv / hr, 0.1446mSv / hr, 0.0929mSv / hr, which is D in the present invention 1 ,D 2 ,D 3 ,D 4 ,D 5 According to the average energy acquisition method and system provided by the present invention, the average energy obtained is 1.3 MeV, and the source strength inversion method and system provided by the present invention are used to obtain point source source stren...
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