Advanced Fuel Cell Development Progress Report: April-June 1981 (open access)

Advanced Fuel Cell Development Progress Report: April-June 1981

Quarterly report discussing fuel cell research and development work at Argonne National Laboratory (ANL). This report describes efforts directed toward (1) improving understanding of component behavior in molten carbonate fuel cells and (2) developing alternative concepts for components. The principal focus has been on the development of sintered y-LiAIO2 electrolyte supports, stable NiO cathodes, and hydrogen diffusion barriers. Cell tests were performed to assess diffusion barriers and to study cathode voltage relaxation following current interruption.
Date: August 1982
Creator: Pierce, Robert Dean & Arons, R. M.
System: The UNT Digital Library
Control Rods in LMFBRs: A Physics Assessment (open access)

Control Rods in LMFBRs: A Physics Assessment

This physics assessment is based on roughly 300 control rod worth measurements in ZPPR from 1972 to 1981. All ZPPR assemblies simulated mixed-oxide LMFBRs, representing sizes of 350, 700, and 900 MWe. Control rod worth measurements included single rods, various combinations of rods, and tantalum and europium rods. Additional measurements studied variations in B4C enrichment, rod interaction effects, variations in rod geometry, neutron streaming in sodium-filled channels, and axial worth profiles. Analyses were done with design-equivalent methods, using ENDF/B Version IV data. Some computations for the sensitivities to approximations in the methods have been included. Comparisons of these analyses with the experiments have allowed the status of control rod physics in the US to be clearly defined.
Date: August 1982
Creator: McFarlane, Harold F. & Collins, P. J.
System: The UNT Digital Library
JAKEF: A Portable Symbolic Differentiator of Functions Given by Algorithms (open access)

JAKEF: A Portable Symbolic Differentiator of Functions Given by Algorithms

JAKEF is a compiler that accepts as data a single or double precision FORTRAN subroutine program defining an objective function F(x) or a vector function f(x) and produces as output a single or double precision FORTRAN program defining the gradient of F(x) or the Jacobian of f(x).
Date: August 1982
Creator: Hillstrom, Kenneth E.
System: The UNT Digital Library
NDA Safeguards Techniques for LMFBR Assemblies (open access)

NDA Safeguards Techniques for LMFBR Assemblies

Report discussing safeguards for liquid-metal fast breeder reactors (LMFBFRs) and their fuel handling systems.
Date: August 1982
Creator: Persiani, P. J. & Gundy, M. L.
System: The UNT Digital Library