Thermal stress analysis of metal basemat concept

An analysis has been made of a proposed General Electric Company metal basemat concept employing the finite element program STRAW. The basemat is a cost low-carbon steel circular plate which is integral with a poured cavity wall. The integral basemat and cavity wall provides a barrier for core debris accommodation. A thermo-mechanical stress analysis of the unit was performed for several different thermal loadings. Integrity of the cavity wall is maintained if a cooling system is employed for the outer surface; if not, creep buckling failure is predicted. 6 refs., 3 figs., 2 tabs

The Calculation of Transient Temperature Distributions in a Solid Cylindrical Pin, Cooled on the Surface

The IBM-704 program RE-147 is used to calculate the time and space- dependent temperature distribution in a solid cylindrical fuel pin, cooled on the surface, with internal heat generation. The fuel pin may be bare or clad, and its boundary may be cooled by either flowing or staagnat coolant. The heat generatlon source may also be time and space dependent. Specifically, the program considers the fuel pin to be composed of two regions and then solves, by the usual finite difference methods, the heat conduction partial differential equation in the two regions. Simultaneously, the axial and time variation of the coolant temperature is calculated by a finite difference approximate solution of the energy equation for the coolant. An approximate method is included to allow for the effects of solid-state phase changes. In conjunction with the phase- changing procedure, the material properties are permitted to vary from one phase to the next. (auth

THE REACTOR KINETICS OF THE TRANSIENT REACTOR TEST FACILITY (TREAT)

A description of the TREAT facility is presented. The static characteristics of the reactor which pertain to its dynamic behavior, such as temperature coefficient and prompt-neutron lifetime, are discussed. Also considered are other phenomena, the analyses of which provide some measure of the general adequacy of the calculational techniques employed. The correlation and analysts of transientexperiment results on this clean-geometry reactor are examined in considerable detail. In addition, an extrapolation of the reactor's performance beyond the present low design limitation of 400 deg C maximum local temperatare is included. (auth

Argonne National Laboratory Reports

From Abstract: "A detailed description is given of ARGUS, a FORTRAN II computer program for calculating transient temperatures in any concentric cylindrical configuration. Included are an explanation of the mathematical methods, a discussion of special features and restrictions, input and output descriptions, operating instructions, several sample problems, and the code listing.

The calculation of transient temperature distributions in a solid cylindrical pin, cooled on the surface : IBM-704 program 524/RE-147 /

"AEC Research and Development Report""(TID-4500, 15th Ed.)""Physics and Mathematics"Bibliography: p. 140.Operated by The University of ChicagoMode of access: Internet