scholarly journals In-Situ Seawater Gamma Spectrometry with LaBr3 Detector at a Nuclear Power Plant Outlet

2021 ◽  
Vol 9 (7) ◽  
pp. 721
Author(s):  
Daowei Dou ◽  
Zhi Zeng ◽  
Wen Yu ◽  
Ming Zeng ◽  
Wu Men ◽  
...  
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Energy Resolution ◽  
Gamma Spectrometry ◽  
Nuclear Power ◽  
Detection Efficiency ◽  
Environmental Radioactivity ◽  
Southeast China ◽  
Excellent Energy Resolution

In a nuclear emergency, the application of in situ spectrometers for monitoring environmental radioactivity is significantly important, as information on the type and activity of radionuclides released from the accident can be obtained quickly. However, in emergency environmental radiological monitoring, a balance between energy resolution and detecting efficiency must be considered in selecting an appropriate detector. In this study, in situ gamma spectrometry was conducted with the LaBr3 detector to determine the radioactivity of seawater at the discharging outlet of a coastal nuclear power plant in southeast China. The results show that the LaBr3 scintillator has excellent energy resolution and detection efficiency, making it a promising detector for emergency monitoring.

In situ gamma spectrometry using portable HPGe detector. Radiological characterization and environmental surveillance around an operating nuclear power plant. Possibilities and limits

2021 ◽  
Author(s):  
Jose Angel Corbacho ◽  
A Baeza
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Gamma Spectrometry ◽  
Nuclear Power ◽  
Power Plants ◽  
Activity Concentration ◽  
Versatile Tool ◽  
Ge Detector ◽  
Radiological Characterization

Abstract In situ technique for measuring radionuclides in the soil using a portable Ge detector is a highly versatile tool for both the radiological characterization and for the monitoring of operating nuclear power plants. The main disadvantage of this technique is related to the lack of knowledge of the geometry of the source whose activity concentration is to be determined. However, its greatest advantage is the high spatial representability of the samples and the lower time and resource consumption than gamma spectrometry lab measurements. In this study, the possibilities and limits offered by in situ gamma spectrometry with a high resolution gamma portable detector in two common uses are shown: First, the radiological background characterization and its relationship with the geology of an area of 2700 km2 are assessed; Secondly, its potential for monitoring man-made activity concentration in soils located around an operating nuclear power plant in Spain for surveillance purposes is evaluated. Finally, high accuracy radiation maps have been prepared from the measurements carried out. These radiation maps are essential tools to know the radioactive background of an area, especially useful to assess artificial radioactive deposits produced after a nuclear accident or incident.

scholarly journals Room Classification Based on EMC Conditions in Nuclear Power Plants

Energies ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 359 ◽  
Author(s):  
Hrvoje Grganić ◽  
Davor Grgić ◽  
Siniša Šadek
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Electromagnetic Compatibility ◽  
Numerical Calculations ◽  
Operational Experience ◽  
Systematic Classification

Electromagnetic compatibility (EMC) in nuclear power plants today mostly relies on the qualification tests of the new equipment and adhering to some good installation practices. Diversity of the electromagnetic environment and different susceptibility of the plant equipment calls for a systematic classification of the EMC zones in a nuclear power plant. The paper proposes a methodology that uses a combination of the qualification tests, in situ and bench immunity tests, site survey measurements, operational experience, and numerical calculations to divide a nuclear power plant into a reasonable number of EMC zones. This would primarily help to have a better overview of the current EMC level in the plant and to unify emission and susceptibility requirements for the new equipment. In this paper, special attention is given to the preparation and performance of the in situ tests, which present the most challenging step of the methodology. In addition, the paper proposes some of the possible applications of the numerical calculations and addresses their challenges and limitations. The novel classification methodology, inspired by the equipment qualification program, is illustrated with examples from Krško Nuclear Power Plant, which recently performed a comprehensive EMC assessment.

scholarly journals Chromosome analysis of nuclear power plant workers using fluorescence in situ hybridization and Giemsa assay

2013 ◽  
Vol 54 (5) ◽  
pp. 832-839 ◽  
Author(s):  
R. Hristova ◽  
V. Hadjidekova ◽  
M. Grigorova ◽  
T. Nikolova ◽  
M. Bulanova ◽  
...  
Keyword(s):  
In Situ Hybridization ◽  
Power Plant ◽  
Nuclear Power Plant ◽  
Fluorescence In Situ Hybridization ◽  
Nuclear Power ◽  
Chromosome Analysis
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