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Noguchi, Hiroshi; Yokoyama, Sumi*
KURRI-KR-80, p.50 - 56, 2002/08
no abstracts in English
Takahashi, Fumiaki; Manabe, Kentaro; Sato, Kaoru; Tokashiki, Yuji*
no journal, ,
If national radiation safety regulations are revised by adapting the concept of the ICRP 2007 Recommendations, the protection standard values are also reviewed for radiation exposure. Thus, JAEA has developed an internal dosimetry code based on the ICRP 2007 Recommendations since FY 2017. Two functions are to be incorporated to the codes. One is "dose coefficient calculation function" that is used to verify the new dose coefficients by ICRP and the other is "nuclide intake estimation function" for internal dosimetry monitoring. In addition, we have developed GUI to set up calculation condition and functions to indicate results. In the dose coefficient calculation function, a user can set up internal dosimetry model based upon the 1990 recommendation to investigate the influencing factors on a difference between the old and new dose coefficients. In addition, results such as in-vivo radioactivity are also displayed with a graph in the nuclide intake estimation function. We will report an overview of the beta version of the code that integrates the two functions.
Takahashi, Fumiaki; Manabe, Kentaro; Sato, Kaoru
no journal, ,
The International Commission on Radiological Protection (ICRP) has published dose coefficients for internal exposure dose evaluation in accordance with dose assessment methods in the 2007 Recommendations based on newly obtained findings. In the future, if the policy of ICRP 2007 Recommendation is incorporated into national radiation regulations, standards for internal exposure protection are to be revised based on the new coefficients. Therefore, JAEA has developed an internal dose assessment code to verify whether the dose coefficient published by the ICRP has been accurately derived from fundamental dosimetry models and data or not, through a project commissioned by the Nuclear Regulatory Agency. The code also implements functions for radiation dose management and emergency dose assessment at each site based on the 2007 Recommendations. In this presentation, we will report the outline of the beta version of the code developed and examples of its application.
Takahashi, Fumiaki
no journal, ,
The current regulations for radioisotopes have been enacted based on the 1990 Recommendations of the International Commission on Radiological Protection (ICRP) in Japan. On the other hand, ICRP has published the 2007 Recommendations and then discussions are underway to incorporate the new Recommendations into Japanese radiation regulations. In addition, the international standard model and data used have been updated for internal dosimetery by ICRP. Thus, if the 2007 Recommendations of ICRP are incorporated into domestic radiation regulations, the regulatory standard values may be updated for internal exposure. In this presentation, reviews will be made on the latest dose assessment model and data based on the 2007 Recommendations of ICRP, focusing on changes from the past ones. Next, we will report on the internal exposure dose evaluation code that is being developed as a commissioned project from the Nuclear Regulation Authority.