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Partial site release at a power reactor facility.

Joseph Darman1, Michael Whitney, Richard Dubiel

  • 1Millennium Services Inc., 22 Creekstone Ridge, Woodstock, GA 30118, USA. darman@yankee.com

Health Physics
|December 26, 2003
PubMed
Summary

Nuclear facilities can partially release sites before final decommissioning using NUREG-1505 methods to show radiological conditions are indistinguishable from background. This approach was approved by the U.S. Nuclear Regulatory Commission (NRC).

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Area of Science:

  • Nuclear decommissioning
  • Radiological survey and analysis
  • Environmental remediation

Background:

  • U.S. Nuclear Regulatory Commission (NRC) licensed facilities often need to release parts of their site before final license termination.
  • Partial site release requires demonstrating that radiological conditions meet specific criteria.

Purpose of the Study:

  • To describe a method for the radiological aspects of partial site release.
  • To demonstrate the application of NUREG-1505 methodology for partial site release.

Main Methods:

  • Employed NUREG-1505 methodology to demonstrate radiological indistinguishability from background.
  • Utilized Cesium-137 (137Cs) concentrations at the site and a reference background area.
  • Informed by NRC Regulatory Issue Summary 2000-19 regarding partial site release.

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Main Results:

  • The NUREG-1505 methodology was successfully implemented to assess radiological conditions.
  • Demonstrated that specific site areas were indistinguishable from background radiological levels.
  • The proposed approach for partial site release was deemed acceptable by the NRC.

Conclusions:

  • The described radiological approach using NUREG-1505 is effective for partial site release.
  • Successful partial site release was granted based on demonstrated indistinguishability from background.
  • This method provides a pathway for facilities to manage site decommissioning efficiently.