Issue 10 Volume 41 May 16, 2003

This report updates work on measurements of the dissolution rates of single-phase and multi-phase ceramic waste forms
in flow-through reactors at Lawrence Livermore National Laboratory. Previous results were reported in Bourcier (1999). Two
types of tests are in progress: (1) tests of baseline pyrochlore-based multiphase ceramics; and (2) tests of single-phase
pyrochlore, zirconolite, and brannerite (the three phases that will contain most of the actinides).
NTIS
Ceramics; Plutonium; Waste Utilization
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PROPELLANTS AND FUELS
Includes rocket propellants, igniters, and oxidizers; their storage and handling procedures; and aircraft fuels. For nuclear fuels see 73
Nuclear Physics. For related information see also 07 Aircraft Propulsion and Power; 20 Spacecraft Propulsion and Power; and 44
Energy Production and Conversion.
20030032941 Defence Science and Technology Organisation, Edinburgh, Australia
Composite Propellants with Bi-Plateau Burning Behaviour
Ide, Kym M.; November 2002; 28 pp.; In English
Report No.(s): DSTO-GD-0344; DODA-AR-012-509; Copyright; Avail: Other Sources
The literature describing the mechanism of combustion in composite rocket propellants exhibiting bi-plateau burning has
been reviewed. A wide distribution of AP particle size in a definite coarse/fine ratio is required to ensure adequate interstitial
spacing resulting in abnormally depressed burning due to interference of the fine AP fraction combustion by the binder melt
layer. Titanium dioxide added to the formulation acts to increase the binder melt layer viscosity restoring normal burning at
low and high pressures, leaving abnormal burning and a plateau or mesa effect at intermediate pressures. The use of
dimeryl-diisocyanate curative produces a unique plateau at lower pressures due to increased binder liquefaction. Formulation
variables can be adjusted to tailor the pressure levels and bum rates of the plateaus formed.
Author
Rocket Propellants; Burning Rate; Combustion; Composite Propellants; Diisocyanates
20030033841 National Inst. of Standards and Technology (TS), Gaithersburg, MD
Uniform Laws and Regulations in the Area of Legal Metrology and Engine Fuel Quality as Adopted by the 87th
National Conference on Weights and Measures 2002
Coleman, T.; Grimes, T. L.; Dec. 2002; 292 pp.; In English
Report No.(s): PB2003-102251; NIST/HB-130/2003; No Copyright; Avail: CASI; A13, Hardcopy
This handbook compiles the latest Uniform Laws and Regulations and related interpretations and guidelines adopted by
the National Conference on Weights and Measures, Inc. (NCWM). At the 1983 Annual Meeting, the NCWM voted to change
the title of Handbook 130 and the titles of the Laws and Regulations compiled in this handbook. The former title of the
handbook was ‘Model State Laws and Regulations.’ ‘Model State’ was to be changed to ‘Uniform’ in the titles to reflect that
these Laws and Regulations are (1) intended to be standards rather than just guidelines, and (2) intended for adoption by
political subdivisions other than States when deemed appropriate. The compilation itself was endorsed by the NCWM in 1979.
This edition includes amendments approved at the Annual Meetings in 2002. The Conference recommends adoption and
promulgation by weights and measures jurisdictions of these Uniform Laws and Regulations as updated in this handbook.
NTIS
Weight Measurement; Handbooks; Automobile Fuels; Standardization
20030033887 Eltron Research, Inc., Boulder, CO, Oak Ridge National Lab., TN
Advanced Hydrogen Transport Membranes for Vision 21 Fossil Fuel Plants
Roark, S. E.; Sammells, A. F.; Mackay, R. A.; Pitzman, L. Y.; Zirbel, T. A.; Jul. 30, 2002; In English
Report No.(s): DE2002-802163; No Copyright; Avail: National Technical Information Service (NTIS)
The objective of this project is to develop an environmentally responsible, cost-effective, and efficient method for
separating hydrogen from gas mixtures produced during industrial processes, such as coal gasification. This objective will be
accomplished by employing dense ceramic membranes based in part on Eltron-patented materials with a demonstrated ability
for rapid proton and electronic conduction. The primary technical challenges in achieving the goals of this project are to
optimize the composition and microstructure of ceramic materials for conductivity and stability, and to develop thin film
ceramic structures that enable hydrogen separation rates in excess of 10 ml/min/cm(sub 2). Other key aspects of this
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