Evaluation of helium impurity impacts on Spent Nuclear Fuel project processes (OCRWM)

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Description

This document identifies the types and quantities of impurities that may be present within helium that is introduced into multi-canister overpacks (MCO)s by various SNF Project facilities, including, but not limited to the Cold Vacuum Drying (CVD) Facility (CVDF). It then evaluates possible impacts of worst case impurity inventories on MCO drying, transportation, and storage processes. Based on the evaluation results, this document: (1) concludes that the SNF Project helium procurement specification can be a factor-of-ten less restrictive than a typical vendor's standard offering (99.96% pure versus the vendor's 99.997% pure standard offering); (2) concludes that the CVDF's current 99.5% ... continued below

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53 pages

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SHERRELL, D.L. September 21, 1999.

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Description

This document identifies the types and quantities of impurities that may be present within helium that is introduced into multi-canister overpacks (MCO)s by various SNF Project facilities, including, but not limited to the Cold Vacuum Drying (CVD) Facility (CVDF). It then evaluates possible impacts of worst case impurity inventories on MCO drying, transportation, and storage processes. Based on the evaluation results, this document: (1) concludes that the SNF Project helium procurement specification can be a factor-of-ten less restrictive than a typical vendor's standard offering (99.96% pure versus the vendor's 99.997% pure standard offering); (2) concludes that the CVDF's current 99.5% purity requirement is adequate to control the quality of the helium that is delivered to the MCO by the plant's helium distribution system; and (3) recommends specific impurity limits for both of the above cases.

Physical Description

53 pages

Notes

INIS; OSTI as DE00798037

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  • Other Information: PBD: 21 Sep 1999

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  • Report No.: HNF-4702, Rev.0
  • Grant Number: AC06-96RL13200
  • DOI: 10.2172/798037 | External Link
  • Office of Scientific & Technical Information Report Number: 798037
  • Archival Resource Key: ark:/67531/metadc736183

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  • September 21, 1999

Added to The UNT Digital Library

  • Oct. 19, 2015, 7:39 p.m.

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  • July 28, 2016, 3:27 p.m.

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SHERRELL, D.L. Evaluation of helium impurity impacts on Spent Nuclear Fuel project processes (OCRWM), report, September 21, 1999; United States. (digital.library.unt.edu/ark:/67531/metadc736183/: accessed August 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.