Glenn L. Edgemon and Vanessa S. Anda, ARES Corporation; Dane F. Wilson, Oak Ridge National Laboratory
In 2006, a new corrosion monitoring system was designed for a high-level nuclear waste tank at the U.S. Department of Energy’s Hanford Site in Washington state. Laboratory testing was conducted in simulated (non-radioactive) waste solutions to establish baseline instrumentation performance and to characterize data produced by the major modes of corrosion that could be expected in the tank, particularly localized forms of corrosion that could initiate during off-normal or upset conditions. The testing program established that the system hardware performs within design specifications and successfully characterized electrical resistance, linear polarization resistance, and electrochemical noise data associated with uniform corrosion, pitting corrosion, and stress corrosion cracking. This paper presents the raw data, statistical data, and analysis results from this test program.
