| 초록 |
C-14 inventory of Wolsong Nuclear Power Plant (NPP) whose reactors are of CANDU type was estimated for 1984-2002. The C-14 inventory can be estimated based on a simple relation: [C-14 inventory] = [C-14 production] - [C-14 emission]. The second term can be calculated whereas the third term should be measured. However, all measured data for carbon-14 emissions at Wolsong NPP are not available. So we employed an empirical relation:[98.13%]=[100%]-[1.87%]. Using this relation, the theoretical values for the total production, emission and inventory of C-14 at Wolsong NPP for 1984-2002 are estimated to be 1,390 TBq, 22 TBq and 1,370 TBq, respectively. Comparison of C-14 emission levels at Wolsong NPP and Pickering A NPP in terms of rates for theoretical productions and measured emissions of C-14 per unit power generated shows that although more C-14 is produced, less C-14 is released at Wolsong NPP except for 1999. Furthermore, comparison of the degrees of C-14 emissions at both NPPs in terms of ratios of measured to theoretical C-14 emissions indicates that the control and regulation of C-14 emission are more effectively performed at Wolsong NPP. |
