Dose reduction improvements in storage basins of spent nuclear fuel

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Description

Spent nuclear fuel in storage basins at the Hanford Site has corroded and contaminated basin water, which has leaked into the soil; the fuel also had deposited a layer of radioactive sludge on basin floors. The SNF is to be removed from the basins to protect the nearby Columbia River. Because the radiation level is high, measures have been taken to reduce the background dose rate to as low as reasonably achievable (ALARA) to prevent radiation doses from becoming the limiting factor for removal of the SW in the basins to long-term dry storage. All activities of the SNF Project ... continued below

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25 p.

Creation Information

Huang, Fan-Hsiung F. August 13, 1997.

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Description

Spent nuclear fuel in storage basins at the Hanford Site has corroded and contaminated basin water, which has leaked into the soil; the fuel also had deposited a layer of radioactive sludge on basin floors. The SNF is to be removed from the basins to protect the nearby Columbia River. Because the radiation level is high, measures have been taken to reduce the background dose rate to as low as reasonably achievable (ALARA) to prevent radiation doses from becoming the limiting factor for removal of the SW in the basins to long-term dry storage. All activities of the SNF Project require application of ALARA principles for the workers. On the basis of these principles dose reduction improvements have been made by first identifying radiological sources. Principal radiological sources in the basin are basin walls, basin water, recirculation piping and equipment. Dose reduction activities focus on cleaning and coating basin walls to permit raising the water level, hydrolasing piping, and placing lead plates. In addition, the transfer bay floor will be refinished to make decontamination easier and reduce worker exposures in the radiation field. The background dose rates in the basin will be estimated before each task commences and after it is completed; these dose reduction data will provide the basis for cost benefit analysis.

Physical Description

25 p.

Notes

INIS; OSTI as DE00016943

Medium: P; Size: 25 pages

Source

  • Other Information: PBD: 13 Aug 1997; Supercedes report DE99050157

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  • Other: DE99050157
  • Report No.: HNF-SA--3158-FP
  • Report No.: ON: DE99050157
  • Report No.: BR: EW7040000
  • Grant Number: AC06-96RL13200
  • DOI: 10.2172/16943 | External Link
  • Office of Scientific & Technical Information Report Number: 16943
  • Archival Resource Key: ark:/67531/metadc621883

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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.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • August 13, 1997

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

Description Last Updated

  • April 10, 2017, 6:05 p.m.

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Huang, Fan-Hsiung F. Dose reduction improvements in storage basins of spent nuclear fuel, report, August 13, 1997; (digital.library.unt.edu/ark:/67531/metadc621883/: accessed December 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.