A PROGRAM OF RESEARCH ON MECHANICAL METALLURGY AS RELATED TO FUEL-ELEMENT FABRICATION. A Summary Report of Work Through September 1959

A PROGRAM OF BASIC RESEARCH ON MECHANICAL PROPERTIES OF REACTOR MATERIALS. Quarterly Progress Report for the Period Ending June 30, 1962

“…Alterations in the power control system (24) have been made to accommodate the. rapid change in resistance of the molybdenum heater ·with temperature.· Some further tests are required to optimize the control parameter-s.…”

“…rapid change in resistance of the molybdenum heater ·with temperature.· Some further tests are required to optimize the control parameter-s. Advantage of this opportunity is being taken to make improv~~~nts .in the low-level de circuitry (24) to minimize electronic contributicms to base -line dis registry and to ensure stable .. calibration of the differ~ntial thermocouple signals. All bucking potentials are being placed in the preamplifier circuits, and thermal-free switches are being incorporated in order t.o permit.…”

“…A preliminary calibration experiment, using a lead calibration s-pecilnen .si1Y1ilar to that previously e11.1.ployed, (24) has been run to. test the l 3 molybdenum-wound block and to determine the thermal intercoupling constant (3).…”