Comparison of Measured and Calculated Dose Rates and Activities During Pressure Tube Replacement in Pickering Units 1 and 2

Abstract

The shielding codes ORIGEN, DOT3.5, and QAD-CG have been used to calculate specific activities in and the dose rates from fuel channel components removed during the Pickering Units 1 and 2 Large Scale Fuel Channel Replacement (LSFCR) program. The calculated activities and dose rates have been compared with available measurements. The results give confidence that the methodology can be applied to radiation dose assessment associated with LSFCR program for Units 1, 2 and 3, 4 of Pickering reactors or other CANDU nuclear power stations.