| Abstract [eng] |
We analyzed surface contamination of pressurized water reactor(abr. PWR) in primary circular contour. Also we analyzed the spread of radionuclides from surface repository of four PWR reactor blocks. For this purpose, we used OSCAR program and modeled primary circular contour surface contamination of each PWR block. For modeling of the burial of contaminated primal circular contour elements and leakage channel of radionuclides we used RESRAD modeling program. We modeled leakage channels of 14 radioactive isotopes: Nb-94, Tc-99, C-14, I-129, Am-241, Pu-241, Cm-243, U-235, U-238, U-234, Pu-238, Pu-240, Cm-244, Pu-239. From all 14 nuclides biggest influence to total dose rate had 5 radionuclides: C-14, Nb-94, Am-241, Pu-241 and U-235. In all cases of burial the biggest amount of radionuclides release was due to transfer trough water: contaminate of ground water where nuclides travel to drinkable water sources and plants. After modeling of burial of contaminated primary circular contour components, we can conclude that: • Doze rate is a little bit higher than the aloud limit in surface burial ground, this is why we can’t bury primary circular contour components in surface burial ground. • Radiation for people and surrounding near surface burial ground is dangerous after 40-50 years from burying PWR parts. |
