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Title: Doctor Demings Red Bead Experiment & RadCon


No abstract prepared.

Publication Date:
Research Org.:
Sponsoring Org.:
USDOE Office of Environmental Management (EM) (US)
OSTI Identifier:
Report Number(s):
HNF-8232-FP, Rev.0
TRN: US0301712
DOE Contract Number:
Resource Type:
Resource Relation:
Conference: Conference title not supplied, Conference location not supplied, Conference dates not supplied; Other Information: PBD: 21 May 2001
Country of Publication:
United States

Citation Formats

PREVETTE, S.S. Doctor Demings Red Bead Experiment & RadCon. United States: N. p., 2001. Web.
PREVETTE, S.S. Doctor Demings Red Bead Experiment & RadCon. United States.
PREVETTE, S.S. Mon . "Doctor Demings Red Bead Experiment & RadCon". United States. doi:.
title = {Doctor Demings Red Bead Experiment & RadCon},
author = {PREVETTE, S.S.},
abstractNote = {No abstract prepared.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon May 21 00:00:00 EDT 2001},
month = {Mon May 21 00:00:00 EDT 2001}

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  • The first part of this report covers background of resin bead spectrometry and the new batch resin bead method. In the original technique, about ten anion resin beads in the nitrate form were exposed to the diluted sample solution. The solution was adjusted to be a 8 M HNO/sub 3/ and to have about 1 U per bead. Up to 48 hours of static contact between beads and solution was required for adsorption of 1 to 3 ng Pu and U per bead to be achieved. Under these conditions, contamination was a problem at reprocessing facilities. The new batchmore » techniques reduces the risk of contamination by handling one hundred times more U in the final diluted sample which is exposed to a proportionately larger number of beads. Moreover, it only requires ten minutes adsorption time to provide about 1000 purified samples for mass spectrometry. The amounts of Pu and U adsorbed versus time were determined and results are tabulated. The second part of this report briefly summarizes results of resin bead field tests completed at the Power Reactor and Nuclear Fuel Development Corporation (PNC) reprocessing plant in Tokai-mura, Japan. Both methods, the original small-sample resin bead and the batch technique, were investigated on spent fuel solutions. Beads were prepared at PNC and distributed to IAEA and ORNL along with dried residues for conventional mass spectrometric analysis at IAEA. Parallel measurements were made at PNC using their normal measuring routines. The U and Pu measurements of all resin and those of PNC are in excellent agreement for the batch method. Discrepancies were noted in the U measurements by the original method.« less
  • The peak power of some vehicles can be limited by exhaust system backpressure contributed by a catalytic converter. A computer model was developed for flow and pressure drop in a generalized single-bed bead-bed catalytic converter to determine the sources of converter pressure drop and suggest improved designs with lower restriction. In an accompanying experimental study, pressure losses in the components of two different converters were determined in an engine-dynamometer test cell over a wide range of engine operating conditions. The measured and predicted pressure drops were in good agreement. The experience gained in this study was used to develop amore » low-restriction converter for truck applications.« less
  • A single-pass continuous-flow leach test of PNL 76-68 glass beads (7 mm dia) was concluded after 420 days of uninterrupted operation. Variables included in the experimental matrix were flow-rate, leachant composition, and temperature. Analysis was conducted on all leachate samples for /sup 237/Np and /sup 239/Pu as well as a number of nonradioactive elements. Results indicated that flow-rate and leachant systematically affected the leach rate, but only slightly. Temperature effects were significant. Plutonium leach rate was lower at higher temperature suggesting that Pu sorption onto the beads was enhanced at the higher temperature. The range of leach rates for allmore » analyzed elements (except Pu), at both temperature, at all three flow rates, and with all three leachant compositions varied only three orders of magnitude. The range of variables used in this experiment covered those expected in many proposed repository environments. The preliminary interpretation of the results also indicated that matrix dissolution may be the dominant leaching mechanism, at least for Np in bicarbonate leachant. Regardless of the leaching mechanism the importance of this study is that it bounds the effects of repository environments when the ground water is oxidizing and when it doesn't reach the waste form until the waste has cooled to ambient rock temperature.« less
  • Pipelines are used to carry bottom ash slurries to disposal areas at many coal fired power plants. This paper presents an analysis of wear measurements taken during five years of operation of a ceramic bead lined epoxy fiberglass piping system in this service at a large mid- western power plant. Comparative wear data in bottom ash slurry service for this type of pipe and high chromium cast iron pipe are also presented.