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in creator/contributor: "Waterbury, G. R."

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Interaction of an iridium-clad RTG heat source unit with a simulated terrestrial environment. [/sup 238/PuO/sub 2/]

An iridium-clad, 100-W /sup 238/PuO/sub 2/ sphere, a prototype for the multihundred-watt radioisotope thermoelectric generator, was exposed for 1 y to a simulated temperate humid climate in an environmental test chamber containing sandy soil. The hot sphere sank into the soil after the first rain, then gradually acquired a hard crust around it as a result of the rainwater reacting with the hot soil during successive rains. Time and temperature profiles of the sphere were recorded during the wee… more

Date: February 1, 1976

Creator: Patterson, J. H.; Herrera, B.; Nelson, G. B.; Matlack, G. M. & Waterbury, G. R.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Interaction of a /sup 238/Pu fueled-sphere assembly with a simulated terrestrial environment

A /sup 238/Pu fueled sphere assembly (FSA) was exposed to a simulated humid environment on sandy soil for 3 y. After a 70-week exposure, plutonium was first detected in measurable quantities in rain and condensate samples. A core sample taken in the ninety-third week contained 302 ng of plutonium. Examination of the FSA after exposure revealed a hole in the bottom of the graphite impact shell (GIS) and a leaking weld on the vent assembly of the postimpact containment shell (PICS). These two ope… more

Date: February 1, 1981

Creator: Steinkruger, F. J.; Patterson, J. H.; Herrera, B.; Nelson, G. B.; Matlack, G. M.; Waterbury, G. R. et al.