Oleg Darenskikh Mayak Production Association

To date, bubbler-probe manometry tank-volume measurement (TVM) systems have been installed in the radiochemical plants of the Mayak Production Association (MPA), the Siberian Chemical Combine (SCC), and the Mining and Chemical Combine (MCC) as part of the Cooperative Nuclear Material Prc}tection, Control and Accounting (MPC&A) Program between the United States and Russia. At MPA, three TVM systems in the plutonium processing area potentially permit the determination of a material balance. At SCC, a TVM system operates at one of the two input accountability tanks for dissolved irradiated reactor fuel. At MCC the TVM operates in a test mode on a uranium-solution-bearing tank. In this paper we review the experiences with these TVM systems in the three plants. 1. Role of the TVM in Material Accounting One goal of the United States-Russian MPC8J4 program is to improve nuclear material protection, control, and accounting (MPC&A) of bulk materials in Russian facilities. Such materials include plutonium-bearing liquid solutions at irradiated fuel reprocessing (radiochemical) plants: dissolver, intermediate product, and waste