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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2007.1
- 수록면
- 747 - 752 (6page)
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초록· 키워드
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The Proton Engineering Frontier Project (PEFP) has designed and developed a proton linear accelerator facility operating
at 100 MeV – 20 mA. The radiological effects of such a nuclear facility on the environment are important in terms of radiation
safety. This study estimated the production rates of radionuclides in the soil around the accelerator facility using MCNPX.
The groundwater migration of the radioisotopes was also calculated using the Concentration Model. Several spallation
reactions have occurred due to leaked neutrons, leading to the release of various radionuclides into the soil. The total activity
of the induced radionuclides is approximately 2.98 10-4 Bq/cm3 at the point of saturation. 45Ca had the highest production
rate with a specific activity of 1.78 10-4 Bq/cm3 over the course of one year. 3H and 22Na are usually considered the most
important radioisotopes at nuclear facilities. However, only a small amount of tritium was produced around this facility, as
the energy of most neutrons is below the threshold of the predominant reactions for producing tritium: 16O(n,X)3H and
28Si(n,X)3H (approximately 20 MeV). The dose level of drinking water from 22Na was 1.48 10-5 pCi/ml/yr, which was less
than the annual intake limit in the regulations.
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PEFP 100 MeV Drift Tube의 열 및 유동 특성에 관한 연구
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Special monitoring results for determination of radionuclide composition of Russian NPP atmospheric releases
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CURRENT STATUS OF ACCELERATOR RADIATION SAFETY IN JAPAN
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