A robust methodology for assessing thyroid absorbed doses based on individual monitoring data after a severe nuclear accident

• Type: Article in International Scientific Journal
• Date: 2019

Authors

Berkovskyy, V (Author) Other; Ratia, G (Author) Other; Bonchuk, Y (Author) Other; Vrba, T (Author) Other; Gregoratto, D (Author) Other; Broggio, D (Author) Other; Teles, P (Author) Other; Lopez, MA (Author) Other

Journal

Title: Radiation Measurements

Vol. 129

ISSN: 1350-4487

Publisher: Elsevier

Indexing

Scopus - 3 Citations

Other information

Authenticus ID: P-00T-D33

DOI: 10.1016/j.radmeas.2019.106183

Abstract (EN): The paper presents a ¿one-step¿ procedure for the direct dose assessment based on thyroid monitoring data obtained after a severe nuclear accident at a light water power reactor. The developed methodology is based on the ¿dose per content¿ concept that allows the direct conversion of the measured value to the dose estimate. The paper provides methods and data for assessments of the committed absorbed dose to the thyroid based on measurements of the activity of radioactive isotopes of iodine in the thyroid gland. Values of functions ¿absorbed dose to the thyroid integrated over 30 days per activity of I-131 measured in the thyroid¿ were calculated for adults and children. For in utero exposure, the absorbed dose to the thyroid of the offspring is provided per activity measured in the maternal thyroid. The contribution of short-lived radionuclides I-132, I-133, I-134, I-135, and Te-132, is considered by applying correction coefficients. Optionally, the methodology permits the use of measurements of the I-132 activity in the thyroid. Primary sources of uncertainty in the assessed thyroid dose are also discussed. © 2019

Language: English

Type (Professor's evaluation): Scientific