An Empirical Approach to Bounding the Axial Reactivity Effects of PWR Spent Nuclear Fuel

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Description

One of the significant issues yet to be resolved for using burnup credit (BUC) for spent nuclear fuel (SNF) is establishing a set of depletion parameters that produce an adequately conservative representation of the fuel's isotopic inventory. Depletion parameters (such as local power, fuel temperature, moderator temperature, burnable poison rod history, and soluble boron concentration) affect the isotopic inventory of fuel that is depleted in a pressurized water reactor (PWR). However, obtaining the detailed operating histories needed to model all PWR fuel assemblies to which BUC would be applied is an onerous and costly task. Simplifications therefore have been suggested ... continued below

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4 pages

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O'Leary, P. M. & Scaglione, J. M. April 4, 2001.

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Description

One of the significant issues yet to be resolved for using burnup credit (BUC) for spent nuclear fuel (SNF) is establishing a set of depletion parameters that produce an adequately conservative representation of the fuel's isotopic inventory. Depletion parameters (such as local power, fuel temperature, moderator temperature, burnable poison rod history, and soluble boron concentration) affect the isotopic inventory of fuel that is depleted in a pressurized water reactor (PWR). However, obtaining the detailed operating histories needed to model all PWR fuel assemblies to which BUC would be applied is an onerous and costly task. Simplifications therefore have been suggested that could lead to using ''bounding'' depletion parameters that could be broadly applied to different fuel assemblies. This paper presents a method for determining a set of bounding depletion parameters for use in criticality analyses for SNF.

Physical Description

4 pages

Notes

INIS; OSTI as DE00786543

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  • Other Information: PBD: 4 Apr 2001

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  • Report No.: MOL.20010522.0024
  • Grant Number: NONE
  • DOI: 10.2172/786543 | External Link
  • Office of Scientific & Technical Information Report Number: 786543
  • Archival Resource Key: ark:/67531/metadc717702

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  • April 4, 2001

Added to The UNT Digital Library

  • Sept. 29, 2015, 5:31 a.m.

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  • Feb. 10, 2016, 7:31 p.m.

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O'Leary, P. M. & Scaglione, J. M. An Empirical Approach to Bounding the Axial Reactivity Effects of PWR Spent Nuclear Fuel, report, April 4, 2001; Las Vegas, Nevada. (digital.library.unt.edu/ark:/67531/metadc717702/: accessed December 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.