Process for removing technetium from iron and other metals

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Description

Technetium is a radioactive product of the nuclear fission process. During reprocessing of spent or partially spent fuel from nuclear reactors, the technetium can be released and contaminate other, otherwise good, metals. A specific example is equipment in gaseous diffusion uranium enrichment cascades which have been used to process fuel which was returned from reactors, so-called reactor returns. These returns contained volatile technetium compounds which contaminated the metals in the equipment. Present regulations require that technetium be removed before the metal can be re-used at non-radioactive sites. Removing the technetium from contaminated metals has two desirable results. First, the large ... continued below

Physical Description

16 p.

Creation Information

Leitnaker, James M. & Trowbridge, Lee D. December 1, 1997.

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This patent 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 patent can be viewed below.

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Description

Technetium is a radioactive product of the nuclear fission process. During reprocessing of spent or partially spent fuel from nuclear reactors, the technetium can be released and contaminate other, otherwise good, metals. A specific example is equipment in gaseous diffusion uranium enrichment cascades which have been used to process fuel which was returned from reactors, so-called reactor returns. These returns contained volatile technetium compounds which contaminated the metals in the equipment. Present regulations require that technetium be removed before the metal can be re-used at non-radioactive sites. Removing the technetium from contaminated metals has two desirable results. First, the large amount of nonradioactive metal produced by the process herein described can be recycled at a much lower cost than virgin metal can be produced. Second, large amounts of radioactively contaminated metal can be reduced to relatively small amounts of radioactive slag and large amounts of essentially uncontaminated metal. A new and improved process for removing technetium from iron and other metals is described in which between 1/10 atom % and 5 atom % of manganese is added to the contaminated metal in order to replace the technetium.

Physical Description

16 p.

Notes

OSTI as DE00756664

Medium: P; Size: 16 pages

Source

  • Patent File Date: 1997 Jun 27

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  • Report No.: PATENTS-US--A8884128
  • Grant Number: AC05-84OR21400
  • Office of Scientific & Technical Information Report Number: 756664
  • Archival Resource Key: ark:/67531/metadc702922

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Office of Scientific & Technical Information Technical Reports

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  • December 1, 1997

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

Description Last Updated

  • April 7, 2017, 3:22 p.m.

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Leitnaker, James M. & Trowbridge, Lee D. Process for removing technetium from iron and other metals, patent, December 1, 1997; Tennessee. (digital.library.unt.edu/ark:/67531/metadc702922/: accessed September 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.