Dosimetry and cancer risk estimations for different radiation protection solutions at decommissioning a contaminated nuclear power plant site

Journal Article · 29 September 2022 · Radiation Protection Dosimetry

DOI: https://doi.org/10.1093/rpd/ncac192 · OSTI ID:2471442

Andersson, Martin  ^[1]; Eckerman, Keith ^[2]; Ören, Ünal ^[3]

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1. Univ. of Gothenburg (Sweden); Lund Univ. (Sweden)
2. Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
3. Barsebäck Kraft, Löddeköpinge (Sweden)

Contaminated sediments originating from dredging activities in a nuclear power plant site were placed in a pond, which has to be taken into consideration during the future decommissioning process. The sediments have to be handled to free release the site. The radionuclides Co-60 and Cs-137 were identified and the activity concentrations (Bq/kg) were quantified in the range of 10–6000 and 5–50 Bq kg^-1, respectively. The absorbed dose rate to individuals of various ages and sex present at the site of the dry pond area was estimated. The radiological impact in terms of lifetime attributable risk (LAR) and effective dose were calculated. For a 30-year-old male exposed during one year without any action regarding the sediments in the dried out pond, the LAR was predicted to be 0.0027, which recalculated to effective dose corresponds to 7.6 mSv year^-1. The calculations show that countermeasures will be needed for the contaminated site.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE; Swedish Radiation Safety Authority
• Grant/Contract Number: AC05-00OR22725
• OSTI ID: 2471442
• Journal Information: Radiation Protection Dosimetry, Journal Name: Radiation Protection Dosimetry Journal Issue: 19 Vol. 198; ISSN 0144-8420
• Publisher: Oxford University PressCopyright Statement
• Country of Publication: United States
• Language: English