The development and the quality assessment of the dose rate measurement carry in earth surface

来源 :第七届国际天然放射性物质研讨会 | 被引量 : 0次 | 上传用户:yanlj007
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
  [Purpose] The decontamination work of the radioactive material by a nuclear power plant disaster is done,and it is necessary to evaluate correctly the dose rate in the earth surface after decontamination.In this research,the shield which interrupts the radiation from the circumference was manufactured according to the form of a survey meter,and it aimed at verifying the effect.It aimed at developing the measurement carry which can carry a survey meter and a cover object,and performing a quality assessment.[Method] The leaden shield was manufactured according to the probe form of a survey meter,and the shield rate to a 137Cs gamma ray was calculated.The survey meter loading type measurement carry used for dose rate measurement of earth surface was manufactured.In a concrete side or soil,the dose rate was measured using this equipment,and the effect was verified.[Results and discussion] Shield thickness of 3cm is suitable and mass is in about 15kg.As a result of shielding the gamma ray from the circumference using this shield,it was a shield rate exceeding 90%.Measurement carry has four tires and has the structure of reducing vibration of movement.In measurement at the appointed place,as a result of comparing the case where a manual measuring situation and measurement carry are used,there was no great difference in the time concerning measurement.However,fatigue of manual measurement is very large,and a significant difference becomes large in measuring many parts.[Conclusions] In order to perform dose rate measurement in earth surface correctly,the shield which covers a surrounding gamma ray was manufactured,and the measurement carry which can carry it has been developed.The measurement persons burden was able to be reduced in verification of monitoring using this equipment.
其他文献
In the present study,the concentrations of 226Ra,232Th and 40K are measured in building material and soil samples collected from different locations of Una,Himachal Pradesh,India.The collected soil sa
Radiation portal monitor (RPM) is an installed device to monitor illicit radioactive materials possibly embedded in loads at harbors.In Korea,RPMs have been installed at harbors in accordance with the
According to the magnitude of water erosion problems in the Sehoul area; located at the north west of Morocco; and the complexity of analysing and quantifying such natural phenomenon,the 7Be technique
Naturally occurring radionuclides of terrestrial origin exist ubiquitously in the environment and contribute significantly to external and internal doses to the population.Among them,of particular imp
The continuous measurement of the radon exhalation rate of soil is quite important to radon exposure research as well as the evaluation of the cover design for uranium mill tailings.A continuous measu
Prior to this study,phosphogypsum (PG) stockpiles at the Eshidiyamine in Jordan were thought to be potentially enriched with potentially toxic metalsand radionuclides,resulting in possible environment
Research includes finding concentrations of radon (222Rn) and its decay results inside and outside the National Insurance Company building and the surrounding areas,the door of the east-the city of Ba
Trying to cover a gap in the open literature,occupational exposures and activity concentrations have been assessed in two NORM industrial plants devoted to the production of mono-ammonium phosphate (M
The aim of this work was to check and determine the activity concentration of 40K,226Ra and 228Ra in some commercial bottled water used as drinking water in Cameroon by means of using high-purity germ
The main aim of this work is to measure the activity concentrations of Naturally Occurring radioactive Materials (NORM) produced in the exploration and extraction processes of oil.The natural radionuc
会议