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Title: Unremediated Nitrate Salts: Drum Preparation and WCRRF Status

  1. Los Alamos National Laboratory
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Environmental Management (EM)
OSTI Identifier:
Report Number(s):
DOE Contract Number:
Resource Type:
Resource Relation:
Conference: WCS Quarterly ; 2017-12-13 - 2017-12-13 ; Dallas, Texas, United States
Country of Publication:
United States
Environmental Protection

Citation Formats

Funk, David John. Unremediated Nitrate Salts: Drum Preparation and WCRRF Status. United States: N. p., 2017. Web.
Funk, David John. Unremediated Nitrate Salts: Drum Preparation and WCRRF Status. United States.
Funk, David John. 2017. "Unremediated Nitrate Salts: Drum Preparation and WCRRF Status". United States. doi:.
title = {Unremediated Nitrate Salts: Drum Preparation and WCRRF Status},
author = {Funk, David John},
abstractNote = {},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2017,
month =

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  • Lawrence Livermore National Laboratory (LLNL) has been performing accountability measurements of plutonium (Pu) -bearing items with the 30-gallon drum neutron multiplicity counter (NMC) since August 1998. A previous paper focused on the LLNL experience with Pu-bearing oxide and metal items. This paper expands on the LLNL experience with Pu-bearing salts containing low masses of Pu. All Pu-bearing salts used in this study were measured using calorimetry and gamma isotopic analyses (Cal/Iso) as well as the 30-gallon drum NMC. The Cal/Iso values were treated as being the true measure of Pu content because of the inherent high accuracy of the Cal/Isomore » technique, even at low masses of Pu, when measured over a sufficient period of time. Unfortunately, the long time period required to achieve high accuracy from Cal/Iso can impact other required accountability measurements. The 30-gallon drum NMC is a much quicker system for making accountability measurements of a Pu-bearing salt and might be a desirable tradeoff. The accuracy of 30-gallon drum NMC measurements of Pu-bearing salts, relative to that of Cal/Iso, is presented in relation to the mass range and alpha associated with each item. Conclusions drawn from the use of the 30-gallon drum NMC for accountability measurements of salts are also included.« less
  • The formation of ammonium nitrate-uranyl nitrate double salts has important effects on the thermal denitration process for the preparation of UO{sub 3} and on the physical properties of the resulting product. Analyses were performed, and properties and decomposition behavior were determined for three double salts: NH{sub 4}UO{sub 2}(NO{sub 3}){sub 3}, (NH{sub 4}){sub 2}UO{sub 2}(NO{sub 3}){sub 4}, and (NH{sub 4}){sub 2}UO{sub 2}(NO{sub 3}){sub 4} {center dot} 2H{sub 2}O. The trinitrate salt decomposes without melting at 270--300{degrees}C to give a {gamma}-UO{sub 3} powder of {approximately} 3-{mu}m average size, with good ceramic properties for fabrication into UO{sub 2}nuclear fuel pellets. The tetranitrate dihydratemore » melts at 48{degrees}C; it also dehydrates to the anhydrous salt. The anhydrous tetranitrate decomposes exothermically, without melting, at 170--270{degrees}C by losing one mole of ammonium nitrate to form the trinitrate salt. 17 refs., 3 figs., 3 tabs.« less
  • Advanced lithium batteries presently under development operate either at the high temperatures associated with the LiCl-KCl molten salt (350-450/degree/C), or at ambient temperatures employing organic solvent based electrolytes. An intermediate temperature lithium battery is proposed as an alternative if it reduces corrosion problems present at high temperatures and improved kinetic performance with respect to ambient temperature cells. 17 refs.