Using the Graphite Isotope Ratio Method to Verify the DPRK's Plutonium-Production Declaration

NOTES AND REFERENCES

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• “ The accumulated core average burnups of the 5-MWe reactor between February 2003 and April 2005 and between June 2005 and mid-July 2007 are about 220 MWd/tHM and 210 MWd/tHM, respectively, assuming 20 MW thermal power and a capacity factor of 70 percent ” .
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• June 2009 . “ Based on the 1/4 core model of the 5 MWe reactor containing spent fuel with average burnup of 1,100 MWd/tHM, the simulated B10/B11 ratios of graphite samples were calculated by an expert at KAERI using a three dimensional Monte Carlo burnup code, developed by Seoul National University and KAERI. The calculations assume all control rods are out from their channels. Personal communication from KAERI ” .
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• “ Wolfram Mathematica 7®. Functional form of the fitting function in this study is F(x, y, z) = 0.0307848 – 1.74155x10−7x2 − 1.75037x10−7y2 − 5.13598x10−7z – 1.83897x10−7z2 ” .
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• June 2009 . “ Personal communication with KAERI ” .
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