Full Content is available to subscribers

Subscribe/Learn More  >

Methodology for Identification of Conditionally Released Materials From Decommissioning Using the OMEGA Code

[+] Author Affiliations
Matej Zachar

DECOM, a.s., Trnava, Slovakia

Vladimír Daniška

DECOM, a.s.; DECONTA, a.s., Trnava, Slovakia

Vladimír Nečas

Slovak University of Technology in Bratislava, Bratislava, Slovakia

Paper No. ICEM2011-59175, pp. 1545-1553; 9 pages
  • ASME 2011 14th International Conference on Environmental Remediation and Radioactive Waste Management
  • ASME 2011 14th International Conference on Environmental Remediation and Radioactive Waste Management, Parts A and B
  • Reims, France, September 25–29, 2011
  • Conference Sponsors: Nuclear Engineering Division and Environmental Engineering Division
  • ISBN: 978-0-7918-5498-3
  • Copyright © 2011 by ASME


The nuclear facility decommissioning process is characterized by production of large volumes of radioactive materials to be managed. The materials with radioactivity slightly above the defined unconditional clearance levels could be released conditionally for a specified industrial application in accordance with developed scenario ensuring that the limits for radiation exposure of workers and public will not be exceeded. The paper presents the methodology for identifying and assessment of the physical and radiological parameters of material items suitable for using in defined scenarios of conditional reuse of materials resulting from the decommissioning process. The calculation of mentioned parameters is done by using the analytical code OMEGA with implemented calculation stream for evaluation the conditional release process. The necessary input parameters for the OMEGA code are maximum concentrations of each radionuclide in the conditionally released materials which do not cause the doses above the limit values for the possible scenarios of further use of materials outside the nuclear site. The examples of such scenarios are assessed and presented in other related papers proposed for the ICEM conference (e.g. papers ICEM2011-59120 or ICEM2011-59128). Based on the inventory database of physical and radiological characteristics of decommissioned facility, the calculation algorithm separates the relevant material items with activity concentrations between unconditional and conditional clearance levels. The amount, material composition and radioactivity of such material items are declared as output parameters of the calculation and are also discussed in the paper. Such data could be used as one of the bases in the benefit analysis of potential application of conditional release within the frame of decommissioning waste management.

Copyright © 2011 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In