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Title: Simulant Testing of a Co-Decontamination (CoDCon) Flowsheet for a Product with a Controlled Uranium-to-Plutonium Ratio

Abstract

Multiple tests of a co-decontamination (CoDCon) tributyl phosphate (TBP) based solvent extraction flowsheet are being performed to determine the uncertainties associated with maintaining a target U/Pu ratio in the Pu-containing product. The first two flowsheet tests used simple dissolved fuel simulants containing only U and Pu, but increasingly more complex simulants will but used in subsequent tests, with the ultimate goal of performing tests with irradiated fuel. The flowsheet is designed so as not to create a purified Pu stream, but rather a mixture of U and Pu with a U/Pu mass ratio of 7/3. Uranium and Pu are first co-extracted into the TBP solvent, and then U(IV) is used to strip the Pu from the loaded solvent. A fresh TBP solvent stream is introduced at the same stage the Pu-containing aqueous stream exits. The flowrate of the fresh TBP solvent stream is adjusted so that sufficient U bleeds over into the Pu product to produce the desired U/Pu ratio. The system is monitored in real time using optical spectroscopy, which allows for control of the U/Pu ratio through adjustment of the fresh TBP solvent flowrate. This paper will describe the results of the first two CoDCon flowsheet tests.

Authors:
ORCiD logo [1];  [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1];  [1];  [1]
  1. BATTELLE (PACIFIC NW LAB)
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1530575
Report Number(s):
PNNL-SA-138080
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Separation Science and Technology
Additional Journal Information:
Journal Volume: 54; Journal Issue: 12
Country of Publication:
United States
Language:
English
Subject:
CoDCon, fuel recycle, fuel reprocessing, on-line monitor

Citation Formats

Lumetta, Gregg J., Allred, Jarrod R., Bryan, Samuel A., Hall, Gabriel B., Levitskaia, Tatiana G., Lines, Amanda M., and Sinkov, Sergey I. Simulant Testing of a Co-Decontamination (CoDCon) Flowsheet for a Product with a Controlled Uranium-to-Plutonium Ratio. United States: N. p., 2019. Web. doi:10.1080/01496395.2019.1594899.
Lumetta, Gregg J., Allred, Jarrod R., Bryan, Samuel A., Hall, Gabriel B., Levitskaia, Tatiana G., Lines, Amanda M., & Sinkov, Sergey I. Simulant Testing of a Co-Decontamination (CoDCon) Flowsheet for a Product with a Controlled Uranium-to-Plutonium Ratio. United States. doi:10.1080/01496395.2019.1594899.
Lumetta, Gregg J., Allred, Jarrod R., Bryan, Samuel A., Hall, Gabriel B., Levitskaia, Tatiana G., Lines, Amanda M., and Sinkov, Sergey I. Thu . "Simulant Testing of a Co-Decontamination (CoDCon) Flowsheet for a Product with a Controlled Uranium-to-Plutonium Ratio". United States. doi:10.1080/01496395.2019.1594899.
@article{osti_1530575,
title = {Simulant Testing of a Co-Decontamination (CoDCon) Flowsheet for a Product with a Controlled Uranium-to-Plutonium Ratio},
author = {Lumetta, Gregg J. and Allred, Jarrod R. and Bryan, Samuel A. and Hall, Gabriel B. and Levitskaia, Tatiana G. and Lines, Amanda M. and Sinkov, Sergey I.},
abstractNote = {Multiple tests of a co-decontamination (CoDCon) tributyl phosphate (TBP) based solvent extraction flowsheet are being performed to determine the uncertainties associated with maintaining a target U/Pu ratio in the Pu-containing product. The first two flowsheet tests used simple dissolved fuel simulants containing only U and Pu, but increasingly more complex simulants will but used in subsequent tests, with the ultimate goal of performing tests with irradiated fuel. The flowsheet is designed so as not to create a purified Pu stream, but rather a mixture of U and Pu with a U/Pu mass ratio of 7/3. Uranium and Pu are first co-extracted into the TBP solvent, and then U(IV) is used to strip the Pu from the loaded solvent. A fresh TBP solvent stream is introduced at the same stage the Pu-containing aqueous stream exits. The flowrate of the fresh TBP solvent stream is adjusted so that sufficient U bleeds over into the Pu product to produce the desired U/Pu ratio. The system is monitored in real time using optical spectroscopy, which allows for control of the U/Pu ratio through adjustment of the fresh TBP solvent flowrate. This paper will describe the results of the first two CoDCon flowsheet tests.},
doi = {10.1080/01496395.2019.1594899},
journal = {Separation Science and Technology},
number = 12,
volume = 54,
place = {United States},
year = {2019},
month = {3}
}