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Installation of passive-active shufflers at Los Alamos plant environments

Description: Two Canberra-built passive-active {sup 252}Cf shufflers of Los Alamos hardware and software design have been installed and are presently undergoing calibration and certification at Los Alamos National Laboratory. These instruments fulfill important safeguards and accountability measurement requirements for special nuclear material in matrices too dense or otherwise not appropriate for typical gamma-ray techniques. The ability of the shuffler to obtain precise assays under conditions of intense … more
Date: August 1, 1994
Creator: Hurd, Jon R.; Hsue, Faye; Rinard, Phillip M.; Wachter, Joseph R. & Davidson, Crain
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

WASTE CRATE ASSAY SYSTEM (WCAS) : ASSAY SOLUTIONS FOR VERY LARGE REMOTE HANDLED CRATES

Description: An advanced passive neutron counter has been designed and fabricated to measure the plutonium content in large remote handled (RH) waste crates. The waste crate assay system (WCAS) was developed under an agreement between Los Alamos National Laboratory, Japan Nuclear Fuel Limited (JNFL), and BNFL Instruments Inc. (BII) to measure the plutonium content in the waste generated in the Rokkasho reprocessing facility. The primary goal of the design was to produce an assay system for large waste conta… more
Date: January 1, 2001
Creator: Menlove, Howard O.; Rinard, Phillip M.; Li, T. K. (Tien K.); Romero, M.; Hiruta, K. & Nasuno, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Comparison of Shuffler and Segmented Gamma Scanner Measurements of 55-Gallon Drums Containing HEU Embedded in Varied Matrices.

Description: Many forms of nuclear waste materials are constantly generated at Los Alamos Chemical and Metallurgical Research (CMR) Facility. For disposal, accounting of the nuclear material must be done. We were recently tasked with measuring sixteen 55-gallon drums, each containing about 150 to 250 grams of HEU. The lower two-thirds of the drums consisted mostly of paper, plastics, and other combustibles. The HEU in this bulk waste had been previously assayed using a segmented gamma scanner (SGS) and rang… more
Date: January 1, 2002
Creator: Hurd, J. R. (Jon R.); Grimes, L. V. (Linda V.); Gomez, C. D. (Cipriano D.); FitzPatrick, J. R. (John R.); Vigil, G. M. (Georgiana M.); Tobin, S. J. (Stephen J.) et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Shuffler bias corrections using calculated count rates

Description: Los Alamos National Laboratory has two identical shufflers that have been calibrated with a dozen U{sub 3}O{sub 8} certified standards from 10 g {sup 235}U to 3600 g {sup 235}U. The shufflers are used to assay a wide variety of material types for their {sup 235}U contents. When the items differ greatly in chemical composition or shape from the U{sub 3}O{sub 8} standards a bias is introduced because the calibration is not appropriate. Recently a new tool has been created to calculate shuffler co… more
Date: April 1, 2001
Creator: Rinard, Phillip M.; Hurd, J. R. (Jon R.) & Hsue, F. (Faye)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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