방사성폐기물학회지 (Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT))

  • 제21권3호
  • /
  • Pages.371-381
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  • 2023
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  • 1738-1894(pISSN)
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  • 2288-5471(eISSN)
한국방사성폐기물학회 (Korean Radioactive Waste Society)
권호 표지
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Evaluation of Occupational, Facility and Environmental Radiological Data From the Centralized Radioactive Waste Management Facility in Accra, Ghana

  • Gustav Gbeddy (Ghana Atomic Energy Commission, GAEC, RPI) ;
  • Yaw Adjei-Kyereme (Ghana Atomic Energy Commission, GAEC, RPI) ;
  • Eric T. Glover (Ghana Atomic Energy Commission, GAEC, RPI) ;
  • Eric Akortia (Ghana Atomic Energy Commission, GAEC, RPI) ;
  • Paul Essel (Ghana Atomic Energy Commission, GAEC, RPI) ;
  • Abdallah M.A. Dawood (Ghana Atomic Energy Commission, GAEC, RPI) ;
  • Evans Ameho (Ghana Atomic Energy Commission, GAEC, RPI) ;
  • Emmanuel Aberikae (Ghana Atomic Energy Commission, GAEC, RPI)
  • 투고 : 2023.02.20
  • 심사 : 2023.07.06
  • 발행 : 2023.09.30
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초록

Evaluating the effectiveness of the radiation protection measures deployed at the Centralized Radioactive Waste Management Facility in Ghana is pivotal to guaranteeing the safety of personnel, public and the environment, thus the need for this study. RadiagemTM 2000 was used in measuring the dose rate of the facility whilst the personal radiation exposure of the personnel from 2011 to 2022 was measured from the thermoluminescent dosimeter badges using Harshaw 6600 Plus Automated TLD Reader. The decay store containing scrap metals from dismantled disused sealed radioactive sources (DSRS), and low-level wastes measured the highest dose rate of 1.06 ± 0.92 µSv·h-1. The range of the mean annual average personnel dose equivalent is 0.41-2.07 mSv. The annual effective doses are below the ICRP limit of 20 mSv. From the multivariate principal component analysis biplot, all the personal dose equivalent formed a cluster, and the cluster is mostly influenced by the radiological data from the outer wall surface of the facility where no DSRS are stored. The personal dose equivalents are not primarily due to the radiation exposures of staff during operations with DSRS at the facility but can be attributed to environmental radiation, thus the current radiation protection measures at the Facility can be deemed as effective.

키워드

과제정보

The authors are most grateful to the Radiation Protection Institute (RPI) of the Ghana Atomic Energy Commission (GAEC) for availing all the needed facilities to conduct this study. We acknowledge the tremendous support extended to us by Edith Amoatey and Edward Gyasi of the External Dosimetry Laboratory at RPI, GAEC.

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