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Title: SWEPP PAN assay system uncertainty analysis: Active mode measurements of solidified aqueous sludge waste

Abstract

The Idaho National Engineering and Environmental Laboratory is being used as a temporary storage facility for transuranic waste generated by the US Nuclear Weapons program at the Rocky Flats Plant (RFP) in Golden, Colorado. Currently, there is a large effort in progress to prepare to ship this waste to the Waste Isolation Pilot Plant (WIPP) in Carlsbad, New Mexico. In order to meet the TRU Waste Characterization Quality Assurance Program Plan nondestructive assay compliance requirements and quality assurance objectives, it is necessary to determine the total uncertainty of the radioassay results produced by the Stored Waste Examination Pilot Plant (SWEPP) Passive Active Neutron (PAN) radioassay system. This paper is one of a series of reports quantifying the results of the uncertainty analysis of the PAN system measurements for specific waste types and measurement modes. In particular this report covers active mode measurements of weapons grade plutonium-contaminated aqueous sludge waste contained in 208 liter drums (item description codes 1, 2, 7, 800, 803, and 807). Results of the uncertainty analysis for PAN active mode measurements of aqueous sludge indicate that a bias correction multiplier of 1.55 should be applied to the PAN aqueous sludge measurements. With the bias correction, the uncertaintymore » bounds on the expected bias are 0 {+-} 27%. These bounds meet the Quality Assurance Program Plan requirements for radioassay systems.« less

Authors:
; ;
Publication Date:
Research Org.:
Lockheed Idaho Technologies Co., Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE Office of Environmental Restoration and Waste Management, Washington, DC (United States)
OSTI Identifier:
573168
Report Number(s):
INEEL/EXT-97-01273
ON: DE98052237; TRN: 98:009201
DOE Contract Number:  
AC07-94ID13223
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: Dec 1997
Country of Publication:
United States
Language:
English
Subject:
40 CHEMISTRY; 05 NUCLEAR FUELS; PLUTONIUM; NEUTRON ACTIVATION ANALYSIS; ALPHA-BEARING WASTES; SLUDGES; WIPP; CERTIFICATION; DATA COVARIANCES; NEUTRON ACTIVATION ANALYZERS; CALIBRATION; NONDESTRUCTIVE ANALYSIS; RADIOCHEMICAL ANALYSIS

Citation Formats

Blackwood, L G, Harker, Y D, and Meachum, T R. SWEPP PAN assay system uncertainty analysis: Active mode measurements of solidified aqueous sludge waste. United States: N. p., 1997. Web. doi:10.2172/573168.
Blackwood, L G, Harker, Y D, & Meachum, T R. SWEPP PAN assay system uncertainty analysis: Active mode measurements of solidified aqueous sludge waste. United States. doi:10.2172/573168.
Blackwood, L G, Harker, Y D, and Meachum, T R. Mon . "SWEPP PAN assay system uncertainty analysis: Active mode measurements of solidified aqueous sludge waste". United States. doi:10.2172/573168. https://www.osti.gov/servlets/purl/573168.
@article{osti_573168,
title = {SWEPP PAN assay system uncertainty analysis: Active mode measurements of solidified aqueous sludge waste},
author = {Blackwood, L G and Harker, Y D and Meachum, T R},
abstractNote = {The Idaho National Engineering and Environmental Laboratory is being used as a temporary storage facility for transuranic waste generated by the US Nuclear Weapons program at the Rocky Flats Plant (RFP) in Golden, Colorado. Currently, there is a large effort in progress to prepare to ship this waste to the Waste Isolation Pilot Plant (WIPP) in Carlsbad, New Mexico. In order to meet the TRU Waste Characterization Quality Assurance Program Plan nondestructive assay compliance requirements and quality assurance objectives, it is necessary to determine the total uncertainty of the radioassay results produced by the Stored Waste Examination Pilot Plant (SWEPP) Passive Active Neutron (PAN) radioassay system. This paper is one of a series of reports quantifying the results of the uncertainty analysis of the PAN system measurements for specific waste types and measurement modes. In particular this report covers active mode measurements of weapons grade plutonium-contaminated aqueous sludge waste contained in 208 liter drums (item description codes 1, 2, 7, 800, 803, and 807). Results of the uncertainty analysis for PAN active mode measurements of aqueous sludge indicate that a bias correction multiplier of 1.55 should be applied to the PAN aqueous sludge measurements. With the bias correction, the uncertainty bounds on the expected bias are 0 {+-} 27%. These bounds meet the Quality Assurance Program Plan requirements for radioassay systems.},
doi = {10.2172/573168},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {12}
}