Assessment of Hard-to-Detect Radionuclide Levels in Decommissioning Waste From the Bohunice NPP-A1, Slovakia, for Clearance and Disposal Purposes Metadata

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Title

  • Main Title Assessment of Hard-to-Detect Radionuclide Levels in Decommissioning Waste From the Bohunice NPP-A1, Slovakia, for Clearance and Disposal Purposes

Creator

  • Author: Slavik, O.
    Creator Type: Personal
  • Author: Moravek, J.
    Creator Type: Personal
  • Author: Stubna, M.
    Creator Type: Personal

Publisher

  • Name: WM Symposia, Inc.
    Place of Publication: Tucson, Arizona
  • Name: VUJE Trnava, a.s., Okruzna 5, 918 64 Trnava (SK)
    Place of Publication: United States

Date

  • Creation: 2002-02-26

Language

  • English

Description

  • Content Description: For assessments of hard-to-detect radionuclides (HD-RN) contents in various type of radwastes at the NPP-A1, available empirical data referenced to 137Cs (actinides, 90Sr, 99Tc, 63Ni, 14C) and the theoretical assessment for the remaining HD-RN using calculated RN inventory and a simple model with effective relative (137Cs) spent fuel release fractions was applied. The analytical data of extended radiochemical analysis for the existing available operational radwaste forms have been reviewed for this purpose. 137Cs, 90Sr and 241Am were set up as release markers for partial spent fuel release groups of HD-RNs within which the total fractions of HD-RN released to the operational radwastes were assumed to be constant. It was shown by the assessment carried out that 137Cs and HD-RNs 129I, 99Tc, and partly 79Se and 14C are the main contributors to the disposal dose limit for the radioactive concentrate at NPP A-1. In the case of the radioactive sludge from the operational radwaste system the role of predominant dose contributors belongs to actinides 239,240Pu and 241Am. In the case of clearance of radioactive material from the NPP-A1 site, only the reference radionuclide, 137Cs was predicted to be the most dominant dose contributor. In all of these cases the estimated contributions of other hard-to-detect radionuclides to respective disposal or release dose limit are lower by 2 and more orders of magnitude. As a lesson learned, the most attention is proposed to focus on the control and measurement of the critical HD-RNs indicated by the assessment. For the control of less important HD-RNs, the developed release coefficient method is sufficient to be applied.
  • Physical Description: 13 pages

Subject

  • Keyword: Dose Limits
  • Keyword: Waste Management
  • Keyword: Sludges
  • Keyword: Actinides
  • Keyword: Radioactive Materials
  • Keyword: Wastes
  • Keyword: Radioisotopes
  • STI Subject Categories: 11 Nuclear Fuel Cycle And Fuel Materials
  • Keyword: Spent Fuels
  • Keyword: Radiochemical Analysis
  • Keyword: Clearance
  • STI Subject Categories: 12 Management Of Radioactive Wastes, And Non-Radioactive Wastes From Nuclear Facilities
  • Keyword: Decommissioning
  • Keyword: Slovakia

Source

  • Conference: Waste Management 2002 Symposium, Tucson, AZ (US), 02/24/2002--02/28/2002

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Office of Scientific & Technical Information Report Number: 828883
  • Archival Resource Key: ark:/67531/metadc780188
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