This report discusses two methods which have been considered to reduce the rear face activity. The first involves the use of a solids purge to scour out the activity, and the second employs the use of a chromic acid purge to put the activity into solution. Solids purging is found to be ineffective in reducing rear face activity levels. A chromic acid purge conducted at 60 C for 1/2 hour can be expected to reduce the Zn{sup 65} activity level about five fold without injuring the reactor or causing any harmful aftereffects.
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Hanford Works, Richland, WA (United States)
Place of Publication:
Richland, Washington
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Description
This report discusses two methods which have been considered to reduce the rear face activity. The first involves the use of a solids purge to scour out the activity, and the second employs the use of a chromic acid purge to put the activity into solution. Solids purging is found to be ineffective in reducing rear face activity levels. A chromic acid purge conducted at 60 C for 1/2 hour can be expected to reduce the Zn{sup 65} activity level about five fold without injuring the reactor or causing any harmful aftereffects.
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5 p.
Notes
OSTI as DE94006690; Paper copy available at OSTI: phone, 865-576-8401, or email, reports@adonis.osti.gov
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de Halas, D. R. & Gay, R. H.Reduction of rear face Zn{sup 65} activity,
report,
January 31, 1955;
Richland, Washington.
(https://digital.library.unt.edu/ark:/67531/metadc1280891/:
accessed August 10, 2026),
University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu;
crediting UNT Libraries Government Documents Department.
