Source term estimation of radioxenon released from the Fukushima Dai-ichi nuclear reactors using measured air concentrations and atmospheric transport modeling.

Autor: Eslinger PW; Pacific Northwest National Laboratory, Risk and Decision Sciences Group, 902 Battelle Blvd, P.O. Box 999, MSIN K7-76, Richland, WA 99354, USA. Electronic address: paul.w.eslinger@pnnl.gov., Biegalski SR, Bowyer TW, Cooper MW, Haas DA, Hayes JC, Hoffman I, Korpach E, Yi J, Miley HS, Rishel JP, Ungar K, White B, Woods VT
Jazyk: angličtina
Zdroj: Journal of environmental radioactivity [J Environ Radioact] 2014 Jan; Vol. 127, pp. 127-32. Date of Electronic Publication: 2013 Nov 06.
DOI: 10.1016/j.jenvrad.2013.10.013
Abstrakt: Systems designed to monitor airborne radionuclides released from underground nuclear explosions detected radioactive fallout across the northern hemisphere resulting from the Fukushima Dai-ichi Nuclear Power Plant accident in March 2011. Sampling data from multiple International Modeling System locations are combined with atmospheric transport modeling to estimate the magnitude and time sequence of releases of (133)Xe. Modeled dilution factors at five different detection locations were combined with 57 atmospheric concentration measurements of (133)Xe taken from March 18 to March 23 to estimate the source term. This analysis suggests that 92% of the 1.24 × 10(19) Bq of (133)Xe present in the three operating reactors at the time of the earthquake was released to the atmosphere over a 3 d period. An uncertainty analysis bounds the release estimates to 54-129% of available (133)Xe inventory.
(Copyright © 2013 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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