title: Operational Check Source Recalibration.
abstract: A formal protocol whereby a segregated source is used for later quality control trending and recalibration of operational sources is described. The method is of potential use for any quality radioactive assay program where multiple sources may be in use such that long term loss in activity is possible and not readily detected and corrected using common statistical assessment criteria. The method relies upon a rigorous initial characterization effort that can later be credited to minimize error propagation during recalibration to monitor the overall uncertainty budget. A simple example attachment for use in written procedures is also provided.
authors.affiliation: *Nuclear Waste Partnership, LLC, Waste Isolation Pilot Plant, MS 486-05, Carlsbad NM 88240.
authors.forename: Robert B
authors.initials: RB
authors.lastname: Hayes
mesh_terms: D000465:Algorithms; D002138:Calibration / Q000592:standards; D038622:Internationality; D011829:Radiation Dosage; D011868:Radioisotopes / Q000032:analysis* / Q000592:standards*; D011874:Radiometry / Q000379:methods* / Q000592:standards*; D012016:Reference Values; D012680:Sensitivity and Specificity; D013048:Specimen Handling / Q000592:standards
chemical_list: D011868:Radioisotopes