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γ Dose Rate Estimation and Operation Management Suggestions for Decommissioning the Reactor Pressure Vessel of HTR-PM

[+] Author Affiliations
Sheng Fang, Hong Li, Jianzhu Cao, Wenqian Li, Feng Xie, Jiejuan Tong

Tsinghua University, Beijing, China

Paper No. ICEM2013-96018, pp. V002T03A005; 4 pages
  • ASME 2013 15th International Conference on Environmental Remediation and Radioactive Waste Management
  • Volume 2: Facility Decontamination and Decommissioning; Environmental Remediation; Environmental Management/Public Involvement/Crosscutting Issues/Global Partnering
  • Brussels, Belgium, September 8–12, 2013
  • Conference Sponsors: Nuclear Engineering Division, Environmental Engineering Division
  • ISBN: 978-0-7918-5602-4
  • Copyright © 2013 by ASME


China is now designing and constructing a high temperature gas cooled reactor-pebble bed module (HTR-PM). In order to investigate the future decommissioning approach and evaluate possible radiation dose, gamma dose rate near the reactor pressure vessel was calculated for different cooling durations using QAD-CGA program. The source term of this calculation was provided by KORIGEN program. Based on the calculated results, the spatial distribution and temporal changes of gamma dose rate near reactor pressure vessel was systematically analyzed. A suggestion on planning decommissioning operation of reactor pressure vessel of HTR-PM was given based on calculated dose rate and the Chinese Standard GB18871-2002.

Copyright © 2013 by ASME



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