Evaluation of internal exposure in French nuclear power plants based on whole body counting

Abstract The study is based on data covering the water, sediments, plants and fish sampled over a 20-year period at 15 stations along French rivers. Three geographic zones were investigated: one containing a uranium mining complex (Zone 1), another including five major rivers along which nuclear power plants are sited (Zone II) and a third unaffected by nuclear activities (Zone III). Natural radioactivity basically involves 238U, 226Ra and 210Pb in the uranium series, 232Th from the thorium series, 40K and 7Be. The natural radioactivity in Zone II is not different from Zone III, and is thus unaffected by waste discharges from nuclear power plants. The most abundant radionuclide is 40K, while the other nuclides are often found in trace amounts near the detection threshold of the analysis method used (Ge gamma spectrometry with a 15-hour counting period). The 226Ra and 238U concentrations observed in Zone I are at least an order of magnitude higher than in the other two zones due to authorised waste discharges from the Lodève mining complex, but only a small stream is affected. The measured 226Ra concentrations would result in an annual whole body committed dose equivalent attributable to a 200 g weekly fish consumption from this stream of 4.4 x 10-5 Sv.y-1, or 0.86% of the maximum permissible dose (5 mSv).

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A Whole Body Counting Experience on the Internal Contamination of Iodine-131 at a Korean Nuclear Power Plant

Progress in Nuclear Science and Technology ◽

10.15669/pnst.1.174 ◽

2011 ◽

Vol 1 (0) ◽

pp. 174-177 ◽

Cited By ~ 1

Author(s):

Tae Young KONG ◽

Hee Geun KIM

Keyword(s):

Power Plant ◽

Nuclear Power Plant ◽

Nuclear Power ◽

Whole Body ◽

Internal Contamination ◽

Body Counting ◽

Iodine 131 ◽

Whole Body Counting

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Comparative Assessment of the NPP Risk (on the Example of Rostov and Kalinin NPP). Development of Risk Indicators Atlas for Russian NPPs

10.30987/graphicon-2019-2-290-294 ◽

2019 ◽

Author(s):

Кирилл Чернявский ◽

Kirill Chernyavskii ◽

Мария Берберова ◽

Mariya Berberova

Keyword(s):

Nuclear Power ◽

Power Plants ◽

Nuclear Power Plants ◽

Risk Assessments ◽

Risk Indicators ◽

Internal Exposure ◽

Wind Rose ◽

Long Distance ◽

Ring Segment ◽

The Difference

The object of the work is to compare and analyze external and internal exposure doses and assess damage to the population living around nuclear power plants with VVER-type reactors (on the Rostov and Kalinin nuclear power plants), within a certain radius, taking into account the wind rose. There will also be proposed measures for the possible addition and refinement of formulas. The method of calculating the doses of external and internal exposure, as well as damage to the population in the ring segment of rumba. External and internal exposure doses for Kalinin and Rostov NPPs have been considered. An assessment of material damage was conducted. A variant of the format of the atlas of risk assessments is proposed. Initial assumptions have been made regarding the discrepancy in the results obtained for both doses and damage. One of the possible reasons for the discrepancy in the results of calculating the dose and damage to the Kursk and Smolensk NPPs may be the difference in the terrain. We need to take this into account. By relief changes we mean not ravines and slopes, but hills, mountains, fields. Additionally, you can consider the type of terrain: steppes, forests, etc., although all this will contribute to the already quite a long distance from the nuclear power plant. In the future, it is planned to continue work on the atlas of risk assessments and think over its more convenient format.

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The Environmental Radiation Analysis on the Residential Area Around Nuclear Power Plants

Volume 1: Plant Operations, Maintenance, Engineering, Modifications, Life Cycle and Balance of Plant; Nuclear Fuel and Materials; Radiation Protection and Nuclear Technology Applications ◽

10.1115/icone21-16111 ◽

2013 ◽

Author(s):

Dong Han Yoo ◽

Hee Reyoung Kim

Keyword(s):

Gamma Radiation ◽

Nuclear Power ◽

Power Plants ◽

Nuclear Power Plants ◽

Background Radiation ◽

Radiation Monitoring ◽

Internal Exposure ◽

Base Line ◽

Environmental Radiation ◽

Radiation Level

The environmental radiation level and radioactivity were analyzed in the Ulsan which is close to Nuclear Power Plants (NPPs). Ulsan is a Metropolitan city with a population of about 1,100,000 residents, where the density of NPPs is the highest in Korea. Environmental radiation monitoring in Ulsan has been performed since the radiation monitoring facility was opened in August 2012 and the radioactivity was measured and analyzed in the environmental samples for five months in Ulsan. The measurement of environmental radiation and radioactivity was carried out periodically for various samples including airborne dust, fallout, tap water, and precipitation. Also, sampled were the soil, rice, cabbage, and indicator plants such as Artemisia and pine needles. The basic data from the radioactivity analyses brought a fundamental data for assessing the internal exposure dose for the public due to the intake of the radio nuclides included in those samples. On the other hand, the gamma radiation in the environment was measured continuously by using an environmental radiation monitor of the ion chamber type. Actually, the measurement of gamma radiation is thought to provide the base-line data on environmental radiation/radioactivity for radiological emergencies and the real-time information compared with the background radiation. The measurement analyses showed that the radiation level of the Ulsan area is kept at a normal background level in spite of the operation of many nuclear power plants near it.

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