Sampling Plan for Assaying Plates Containing Depleted or Normal Uranium

Thomas, Ivan R.

Idaho National Laboratory

关键词: Dimensions;    Uranium Sampling Plan For Assaying Plates Containing Deple;    Sampling Plan For Assaying Plates Containing Deple;    Depleted Uranium;    Sampling;   

DOI  :  10.2172/1034802
RP-ID  :  INL/EXT-11-23828
RP-ID  :  DE-AC07-05ID14517
RP-ID  :  1034802

美国|英语

来源: UNT Digital Library

【 摘 要 】

This paper describes the rationale behind the proposed method for selecting a 'representative' sample of uranium metal plates, portions of which will be destructively assayed at the Y-12 Security Complex. The total inventory of plates is segregated into two populations, one for Material Type 10 (depleted uranium (DU)) and one for Material Type 81 (normal [or natural] uranium (NU)). The plates within each population are further stratified by common dimensions. A spreadsheet gives the collective mass of uranium element (and isotope for DU) and the piece count of all plates within each stratum. These data are summarized in Table 1. All plates are 100% uranium metal, and all but approximately 60% of the NU plates have Kel-F{reg_sign} coating. The book inventory gives an overall U-235 isotopic percentage of 0.22% for the DU plates, ranging from 0.19% to 0.22%. The U-235 ratio of the NU plates is assumed to be 0.71%. As shown in Table 1, the vast majority of the plates are comprised of depleted uranium, so most of the plates will be sampled from the DU population.