| Popis: |
The objectives of this low-level liquid wastes study were to (1) determine the requirements for inventory monitoring of inactive (LLLW) tanks at Oak Ridge National Laboratory (ORNL), (2) evaluate the existing inventory of monitoring instruments and determine whether the current requirements for monitoring and leak detection are being met, and (3) recommend improvements or upgrades of the level instruments where needed. The instrumentation was evaluated on the basis of its accuracy, previous experience with the instrumentation, and any other available evaluation data. Instruments were evaluated for their effectiveness in monitoring the liquid inventory. Level instrumentation for 12 of the tanks was considered satisfactory for monitoring liquid inventory and potential leakage. A fist of options was provided for monitoring 12 tanks that are either currently empty or scheduled to be emptied during FY 1992 or 1993. Recommendations were also provided for the Group 5 tanks. Instrument upgrades were determined to be needed for the remaining eight tanks. The study examined the capabilities and limitations of the level-monitoring instruments in use at ORNL and other sites for appropriateness for the tanks requiring upgrades. |
