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JAEA-Data-Code-2012-018

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<strong>JAEA</strong>-<strong>Data</strong>/<strong>Code</strong> <strong>2012</strong>-<strong>018</strong><br />

Estimation of Fuel Compositions in<br />

Fukushima-Daiichi Nuclear Power Plant<br />

Kenji NISHIHARA, Hiroki IWAMOTO and Kenya SUYAMA +<br />

Division of Nuclear <strong>Data</strong> and Reactor Engineering<br />

Nuclear Science and Engineering Directorate<br />

Japan Atomic Energy Agency<br />

Tokai-mura, Naka-gun, Ibaraki-ken<br />

(Received July 19, <strong>2012</strong>)<br />

This document describes the analytical results of the amount of the radioactive<br />

nuclides in the Fukushima-Daiichi nuclear power plant on March 31, 2011 and the<br />

following period with the use of the ORIGEN2 code. The results are given for the<br />

irradiated uranium pellet and the activated cladding tube of zirconium alloy in the core<br />

and the spent fuel storage pools of the respective reactors. The evaluated values are<br />

weight, radioactivity, heat generation, photon generation and neutron generation rate.<br />

Keywords: Fukushima-Daiichi, ORIGEN, Fuel Composition<br />

+ Fuel Cycle Safety Research Unit, Nuclear Safety Research Center<br />

ii<br />

ii

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