Validating the application of the revised ICRP's biokinetic models for organic 14C and organically bound tritium to members of the public.
J Radiol Prot
; 2024 Sep 12.
Article
en En
| MEDLINE
| ID: mdl-39265584
ABSTRACT
In 2016, the International Commission on Radiological Protection (ICRP) has revised the biokinetic models for carbon and tritium in Publication 134 to calculate the dose coefficients of these radionuclides for workers. The following publication for members of the public is now in the process of revising by the ICRP. According to the draft manuscript published for consultation in 2023, the same models will be adopted for members of the public, although the parameters in these models are not corroborated by the metabolic data of radionuclides in foods. Dose coefficients were estimated using the modified models developed in this study to validate the application of the revised models to members of the public. In the modified models, several parameters were replaced based on the metabolic data of these nuclides in foods and compartments of radio-insensitive tissues were introduced. For these estimations, we utilised the an inhouse program for internal-dose calculation developed by the Japan Atomic Energy Agency. The estimated dose coefficient values for ingestion of organic 14C and organically bound tritium ranged from 3.2×10-11 to 7.6×10-11 Sv Bq-1 and from 3.5×10-11 to 5.4×10-11 Sv Bq-1, respectively. We concluded that the dose coefficient value of 1.6×10-10 Sv Bq-1 obtained by the revised ICRP's carbon model was conservative, while the value of 5.1×10-11 Sv Bq-1 for organically bound tritium was appropriate.
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Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
J Radiol Prot
Asunto de la revista:
RADIOLOGIA
Año:
2024
Tipo del documento:
Article
País de afiliación:
Japón
Pais de publicación:
Reino Unido