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Title: Post-Irradiation Examination of Array Targets - Part I

Abstract

During FY 2001, two arrays, each containing seven neptunium-loaded targets, were irradiated at the Advanced Test Reactor in Idaho to examine the influence of multi-target self-shielding on {sup 236}Pu content and to evaluate fission product release data. One array consisted of seven targets that contained 10 vol% NpO{sub 2} pellets, while the other array consisted of seven targets that contained 20 vol % NpO{sub 2} pellets. The arrays were located in the same irradiation facility but were axially separated to minimize the influence of one array on the other. Each target also contained a dosimeter package, which consisted of a small NpO{sub 2} wire that was inside a vanadium container. After completion of irradiation and shipment back to the Oak Ridge National Laboratory, nine of the targets (four from the 10 vol% array and five from the 20 vol% array) were punctured for pressure measurement and measurement of {sup 85}Kr. These nine targets and the associated dosimeters were then chemically processed to measure the residual neptunium, total plutonium production, {sup 238}Pu production, and {sup 236}Pu concentration at discharge. The amount and isotopic composition of fission products were also measured. This report provides the results of the processing and analysis ofmore » the nine targets.« less

Authors:
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
885872
Report Number(s):
ORNL/TM-2003/220
TRN: US0604110
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; DOSEMETERS; FISSION PRODUCT RELEASE; FISSION PRODUCTS; IRRADIATION; NEPTUNIUM; PELLETS; PLUTONIUM; POST-IRRADIATION EXAMINATION; PRESSURE MEASUREMENT; PROCESSING; PRODUCTION; SELF-SHIELDING; TARGETS; TEST REACTORS; VANADIUM; NESDPS Office of Nuclear Energy Space and Defense Power Systems

Citation Formats

Icenhour, A S. Post-Irradiation Examination of Array Targets - Part I. United States: N. p., 2004. Web. doi:10.2172/885872.
Icenhour, A S. Post-Irradiation Examination of Array Targets - Part I. United States. https://doi.org/10.2172/885872
Icenhour, A S. 2004. "Post-Irradiation Examination of Array Targets - Part I". United States. https://doi.org/10.2172/885872. https://www.osti.gov/servlets/purl/885872.
@article{osti_885872,
title = {Post-Irradiation Examination of Array Targets - Part I},
author = {Icenhour, A S},
abstractNote = {During FY 2001, two arrays, each containing seven neptunium-loaded targets, were irradiated at the Advanced Test Reactor in Idaho to examine the influence of multi-target self-shielding on {sup 236}Pu content and to evaluate fission product release data. One array consisted of seven targets that contained 10 vol% NpO{sub 2} pellets, while the other array consisted of seven targets that contained 20 vol % NpO{sub 2} pellets. The arrays were located in the same irradiation facility but were axially separated to minimize the influence of one array on the other. Each target also contained a dosimeter package, which consisted of a small NpO{sub 2} wire that was inside a vanadium container. After completion of irradiation and shipment back to the Oak Ridge National Laboratory, nine of the targets (four from the 10 vol% array and five from the 20 vol% array) were punctured for pressure measurement and measurement of {sup 85}Kr. These nine targets and the associated dosimeters were then chemically processed to measure the residual neptunium, total plutonium production, {sup 238}Pu production, and {sup 236}Pu concentration at discharge. The amount and isotopic composition of fission products were also measured. This report provides the results of the processing and analysis of the nine targets.},
doi = {10.2172/885872},
url = {https://www.osti.gov/biblio/885872}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 23 00:00:00 EST 2004},
month = {Fri Jan 23 00:00:00 EST 2004}
}