Volumetric Radioactivity Viewed as Surface Radioactivity for Free Release Assessment Purposes

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Description

As a part of the SRS Beneficial Reuse Program, stainless steel radioactive scrap metal is melted, pour into ingots, and roll into sheets. The sheets are then fabricated into boxes and barrels for beneficial reuse. The melting activity is a partial decontamination process. Certain isotopes separate from the melted steel, while others stay in solution. Cobalt-60 is the primary constituent, which remains in solution, and becomes the major contributor to the volumetric radioactivity of the finished products (boxes and barrels). There is currently no ``de minimis`` free release level for volumetrically radioactive material. However, under certain circumstances, pathway analysis can ... continued below

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6 p.

Creation Information

Boettinger, W.L. July 8, 1998.

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This article 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 article can be viewed below.

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  • Boettinger, W.L. Westinghouse Savannah River Company, AIKEN, SC (United States)

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Description

As a part of the SRS Beneficial Reuse Program, stainless steel radioactive scrap metal is melted, pour into ingots, and roll into sheets. The sheets are then fabricated into boxes and barrels for beneficial reuse. The melting activity is a partial decontamination process. Certain isotopes separate from the melted steel, while others stay in solution. Cobalt-60 is the primary constituent, which remains in solution, and becomes the major contributor to the volumetric radioactivity of the finished products (boxes and barrels). There is currently no ``de minimis`` free release level for volumetrically radioactive material. However, under certain circumstances, pathway analysis can be used (and have been used) to free release volumetrically radioactive material. This paper presents an analysis using empirical data derived from over sixty ``melts``, to demonstrate that the implied surface radioactivity for specific beneficial reuse products is within free release limit. The approach can be applied to other recycled metal products.

Physical Description

6 p.

Notes

INIS; OSTI as DE98057850

Source

  • Beneficial reuse 1998, Knoxville, TN (United States), 3-6 Aug 1998

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  • Other: DE98057850
  • Report No.: WSRC-MS--98-00527
  • Report No.: CONF-980845--
  • Grant Number: AC09-96SR18500
  • Office of Scientific & Technical Information Report Number: 335164
  • Archival Resource Key: ark:/67531/metadc674858

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Creation Date

  • July 8, 1998

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • Feb. 10, 2016, 2:44 p.m.

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Boettinger, W.L. Volumetric Radioactivity Viewed as Surface Radioactivity for Free Release Assessment Purposes, article, July 8, 1998; Aiken, South Carolina. (digital.library.unt.edu/ark:/67531/metadc674858/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.