Criticality potential of commercial PWR SNF in a degraded waste package

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Description

This paper describes a parametric evaluation of the fraction of the pressurized water reactor (PWR) assembly waste stream with the potential for the criticality threshold in a flooded 21 PWR waste package (WP). The parameters considered were: (1) fuel isotopics (i.e., burnup, enrichment, and age), (2) time of WP breach, (3) the degree of basket degradation, (4) the distribution of the resulting corrosion products, and (5) the infiltration rate. For this evaluation, a k{sub eff} of 0.93 was chosen as the threshold for criticality based on the 5% margin of safety required by 10CFR60.131(h), plus an additional 2% to allow ... continued below

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8 p.

Creation Information

Massari, J.R. & Gottlieb, P. December 1, 1997.

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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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  • Massari, J.R. Framatome Cogema Fuels, Las Vegas, NV (United States)
  • Gottlieb, P. TRW Environmental Safety Systems, Las Vegas, NV (United States)

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Description

This paper describes a parametric evaluation of the fraction of the pressurized water reactor (PWR) assembly waste stream with the potential for the criticality threshold in a flooded 21 PWR waste package (WP). The parameters considered were: (1) fuel isotopics (i.e., burnup, enrichment, and age), (2) time of WP breach, (3) the degree of basket degradation, (4) the distribution of the resulting corrosion products, and (5) the infiltration rate. For this evaluation, a k{sub eff} of 0.93 was chosen as the threshold for criticality based on the 5% margin of safety required by 10CFR60.131(h), plus an additional 2% to allow for the expected bias and uncertainty in the method of calculation. This and similar evaluations will be used to support probabilistic analyses of WP criticality and the development of WP loading curves.

Physical Description

8 p.

Notes

INIS; OSTI as DE98005877

Source

  • Other Information: PBD: Dec 1997

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  • Other: DE98005877
  • Report No.: DOE/RW--98005877
  • DOI: 10.2172/658251 | External Link
  • Office of Scientific & Technical Information Report Number: 658251
  • Archival Resource Key: ark:/67531/metadc704102

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  • December 1, 1997

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • May 18, 2016, 5:38 p.m.

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Massari, J.R. & Gottlieb, P. Criticality potential of commercial PWR SNF in a degraded waste package, report, December 1, 1997; United States. (digital.library.unt.edu/ark:/67531/metadc704102/: accessed September 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.