Published August 2012 | Version v1
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Development of calculation system for decontamination effect, CDE

Creators

  • 1. Japan Atomic Energy Agency, Nuclear Science and Engineering Directorate, Tokai, Ibaraki (Japan)
  • 2. Japan Atomic Energy Agency, Nuclear Safety Research Center, Tokai, Ibaraki (Japan)

Description

Large amount of radionuclides had been discharged to environment in the accident of the Tokyo Electric Power Company Fukushima Daiichi Nuclear Power Plant caused by the 2011 off the Pacific coast of Tohoku Earthquake. The radionuclides deposited on the ground elevate dose rates in large area around the Fukushima site. For the reduction of the dose rate and recovery of the environment, decontamination based on a rational plan is an important and urgent subject. A computer software, named CDE (Calculation system for Decontamination Effect), has been developed to support planning the decontamination. CDE calculates the dose rates before the decontamination by using a database of dose contributions by radioactive cesium. The decontamination factor is utilized in the prediction of the dose rates after the decontamination, and dose rate reduction factor is evaluated to express the decontamination effect. The results are visualized on the image of a target zone with color map. In this paper, the overview of the software and the dose calculation method are reported. The comparison with the calculation results by a three-dimensional radiation transport code PHITS is also presented. In addition, the source code of the dose calculation program and user's manual of CDE are attached as appendices. (author)

Availability note (English)

Available from JAEA; DOI: https://doi.org/10.11484/jaea-research-2012-020

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Additional details

Identifiers

DOI
10.11484/jaea-research-2012-020;

Publishing Information

Imprint Pagination
106 p.
Report number
JAEA-Research--2012-020

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
44060699
Subject category
S54: ENVIRONMENTAL SCIENCES;
Descriptors DEI
C CODES; CESIUM 134; CESIUM 137; DECONTAMINATION; DOSE RATES; ENVIRONMENT; FISSION PRODUCT RELEASE; FUKUSHIMA-1 REACTOR; FUKUSHIMA-2 REACTOR; FUKUSHIMA-3 REACTOR; FUKUSHIMA-4 REACTOR; MICRO SV PER HOUR RANGE; P CODES; REACTOR ACCIDENTS; SURFACE CONTAMINATION MONITORS
Descriptors DEC
ACCIDENTS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BWR TYPE REACTORS; CESIUM ISOTOPES; CLEANING; COMPUTER CODES; ELECTRON CAPTURE RADIOISOTOPES; ENRICHED URANIUM REACTORS; HOURS LIVING RADIOISOTOPES; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTOPES; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; MEASURING INSTRUMENTS; MONITORS; NUCLEI; ODD-EVEN NUCLEI; ODD-ODD NUCLEI; POWER REACTORS; RADIATION DOSE RATE RANGES; RADIATION MONITORS; RADIOISOTOPES; REACTORS; THERMAL REACTORS; WATER COOLED REACTORS; WATER MODERATED REACTORS; YEARS LIVING RADIOISOTOPES

Optional Information

Notes
14 refs., 16 figs., 2 tabs.