Shielding Calculation and Analysis of Radioactive Waste Resin System in Supercritical Water Treatment

Abstract

Radioactive waste resin is generated during the operation of nuclear facilities such as nuclear fuel recycling，reactor cooling water treatment，and spent fuel pool purification. The treatment of radioactive waste resin must consider system radiation protection issues and adopt effective shielding measures to protect public and environmental safety. Design three different shielding combinations based on the type and location of shielding materials，calculate and analyze the shielding effects and applicable scenarios of each method，and provide relevant reference for engineering applications. Meanwhile，using SuperMC radiation shielding calculation software，the surface dose rate of waste resin flowing through equipment such as reactor vessels，resin grinding devices，waste resin transfer tanks，and booster pumps was calculated and analyzed with waste resin treatment facilities as the research object. The calculation results indicate that the surface dose rate of the relevant equipment is 22.13-48.64 μSv/h without shielding. The use of a lead shielding layer to shield and protect equipment with higher surface dose rates meets the requirements of a control area of 5 μSv/h or less after shielding.

Keywords

• radioactive waste resin
• treatment facility
• surface dose rate
• shielding calculation