Source of process water scandium

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Rear face dose rates at the single pass reactors were found to have significantly increased between 1965 and 1967. It was suggested by Battelle-Northwest that an increase in scandium-46 activity may have been a possible cause of the increased dose rates. Battelle-Northwest records showed that considerably more {sup 46}Sc was present in the Columbia River at Richland starting in the summer of 1967 than had been found previously. The ratio of {sup 46}Sc to {sup 65}Zn activity, a correlation which removes seasonal variations in activity, was shown to have increased from 0.1 early in 1967 to l.0 by November of ... continued below

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18 p.

Creation Information

Larrick, A.P. June 12, 1970.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this report can be viewed below.

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  • Douglas United Nuclear, Inc.
    Publisher Info: Douglas United Nuclear, Inc., Richland, WA (United States)
    Place of Publication: Richland, Washington

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Description

Rear face dose rates at the single pass reactors were found to have significantly increased between 1965 and 1967. It was suggested by Battelle-Northwest that an increase in scandium-46 activity may have been a possible cause of the increased dose rates. Battelle-Northwest records showed that considerably more {sup 46}Sc was present in the Columbia River at Richland starting in the summer of 1967 than had been found previously. The ratio of {sup 46}Sc to {sup 65}Zn activity, a correlation which removes seasonal variations in activity, was shown to have increased from 0.1 early in 1967 to l.0 by November of 1967. It was concluded that indeed the {sup 46}Sc release rate from the single pass reactors and the rear face dose es had increased in 1966 and 1967, but not necessarily at the same time {sup 3}. Data presented in the review showed that there had been no changes in parent {sup 45}Sc concentration in the Columbia River between 1962 and 1969, but there had been several changes in water chemistry in 1966 and 1967 which may have contributed to the increased {sup 46}Sc concentration in the reactor effluent. The review document suggested that rear face components be analyzed to verify whether or not the increased {sup 46}Sc concentration in the effluent water was indeed significantly contributing to rear dose rates and that inlet water be analyzed to determine if the increase in {sup 46}Sc was due to the addition of parent {sup 46}Sc with the water treatment chemicals. These analyses have been completed and are presented in this document along with other supporting data.

Physical Description

18 p.

Notes

OSTI as DE95012645

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  • Other Information: DN: Declassified

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  • Other: DE95012645
  • Report No.: DUN--7041
  • Grant Number: AC06-76RL01830
  • DOI: 10.2172/80375 | External Link
  • Office of Scientific & Technical Information Report Number: 80375
  • Archival Resource Key: ark:/67531/metadc741776

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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Creation Date

  • June 12, 1970

Added to The UNT Digital Library

  • Oct. 19, 2015, 7:39 p.m.

Description Last Updated

  • April 26, 2016, 2:02 p.m.

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Larrick, A.P. Source of process water scandium, report, June 12, 1970; Richland, Washington. (digital.library.unt.edu/ark:/67531/metadc741776/: accessed October 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.