ОЦЕНКА СТОИМОСТИ ОКОНЧАТЕЛЬНОГО ЗАХОРОНЕНИЯ РАДИОАКТИВНЫХ ОТХОДОВ КОНДИЦИОНИРОВАННОГО РАЗНЫМИ СПОСОБАМИ НАТРИЯ ПЕРВОГО КОНТУРА БЫСТРЫХ РЕАКТОРОВ

Abstract

One of the main arisen problems during decommissioning of fast reactors is the reprocessing of radioactive primary sodium. After final shut down of fast reactor the reprocessing of sodium in the safe material for final burial demands the long and height-cost procedures because the primary sodium is the fire-explosive-danger metal and it has the appreciable radioactivity. The compare cost assessments for final burial of different radioactive wastes of reprocessed primary sodium from RR BR-10 and NPP BN-600 are accomplished in article. The assessments are performed for two possible reprocessing of primary sodium: by direct one-stage solid-phase oxidation and immobilization technology in solid mineral stone (SPO, IPPE, RR BR-10, Russian patent N 2200991, 2001) and by two-stages immobilization in cement stone through 10 M liquid solution NaOH (method NOAH). The last method NOAH was used at NPP SUPERPHENIX in French. Calculated assessments have showed that burial cost of SPO-reprocessed primary sodium in mineral stone is more cheap then cement stone by NOAH method.