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Remote disassembly of irradiated tritium-bearing lithium-bonded capsules

Description: Seven irradiated tritium-bearing lithium-bonded capsules containing vanadium alloy specimens were disassembled in a hot-cell facility at Argonne National Laboratory. These capsules were irradiated in the Fast Flux Test Facility as part of the structural materials research for the Fusion Power Program. The principal concern in disassembling these capsules to retrieve the test specimens was the hazard associated with the residual bonded tritium, which ranged from {approximately}17 to 99 Ci per capsule. This tritium had to be contained to the maximum extent possible. An enclosed system was built in which the authors used liquid ammonia to dissolve the lithium bond, alcohol to rinse and clean the retrieved specimens, and chemical getters (containing a reactive metal alloy) to trap the released tritium gas. The main processing units of the system are inside a hot cell and the remainder are in a vented cabinet. Essentially all of the tritium in the capsules was either trapped in the getters or confined in the solid reaction residues in beakers of spent ammonia and alcohol. There was no personnel contamination or accidental tritium release during the entire procedure.
Date: September 1994
Creator: Tsai, H.; Strain, R. V.; Donahue, D. A.; Savoie, F. E.; Evans, D. A. & Neimark, L. A.
Partner: UNT Libraries Government Documents Department

Quality assurance/quality control summary report on phase 2 of the Clinch River remedial investigation at the Oak Ridge Reservation, Oak Ridge, Tennessee

Description: Quality assurance (QA) objectives for Phase 2 were that (1) scientific data generated would withstand scientific and legal scrutiny; (2) data would be gathered using appropriate procedures for sample collection, sample handling and security, chain of custody, laboratory analyses, and data reporting; (3) data would be of known precision and accuracy; and (4) data would meet data quality objectives defined in the Phase 2 Sampling and Analysis Plan. A review of the QA systems and quality control (QC) data associated with the Phase 2 investigation is presented to evaluate whether the data were of sufficient quality to satisfy Phase 2 objectives. The data quality indicators of precision, accuracy, representativeness, comparability, completeness, and sensitivity were evaluated to determine any limitations associated with the data. Data were flagged with qualifiers that were associated with appropriate reason codes and documentation relating the qualifiers to the reviewer of the data. These qualifiers were then consolidated into an overall final qualifier to represent the quality of the data to the end user. In summary, reproducible, precise, and accurate measurements consistent with CRRI objectives and the limitations of the sampling and analytical procedures used were obtained for the data collected in support of the Phase 2 Remedial Investigation.
Date: December 1, 1996
Creator: Holladay, S.K.; Anderson, H.M.; Benson, S.B.; Bevelhimer, M.S.; Brandt, C.C.; Chavannes, C.M. et al.
Partner: UNT Libraries Government Documents Department