{"title":"利比亚东南部油田天然放射性物质的评估","authors":"U. Elghawi, Feisal A. Abutweirat, Taha S. Barka","doi":"10.1504/IJLR.2017.10008589","DOIUrl":null,"url":null,"abstract":"An investigation was carried out to find out the concentration of NORMs in evaporation ponds sludge in south eastern oilfield of Libya. Activity concentrations of 226Ra, 232Th and 40K in soil generated during oil production operations were determined using a gamma spectroscopy system based on high purity germanium (HPGe) detector. Concentrations ranged from 83 to 1000 Bq kg−1 for 226Ra, 59 to 315 Bq kg−1 for 232Th and 109 to 304 Bq kg−1 for 40K. To evaluate the radiological effects, radium equivalent activity and external hazard are calculated. The magnitude of these results demonstrates the need of these ponds for a special treatment on site to reduce the exposure to a value below 100 μSv/y, by mixing the pond after drying the lagoon with clean soil to reduce the dose rate and minimise the environmental impact of NORM.","PeriodicalId":14141,"journal":{"name":"International Journal of Low Radiation","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2017-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Evaluation of naturally occurring radioactive materials in oilfields of south east of Libya\",\"authors\":\"U. Elghawi, Feisal A. Abutweirat, Taha S. Barka\",\"doi\":\"10.1504/IJLR.2017.10008589\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"An investigation was carried out to find out the concentration of NORMs in evaporation ponds sludge in south eastern oilfield of Libya. Activity concentrations of 226Ra, 232Th and 40K in soil generated during oil production operations were determined using a gamma spectroscopy system based on high purity germanium (HPGe) detector. Concentrations ranged from 83 to 1000 Bq kg−1 for 226Ra, 59 to 315 Bq kg−1 for 232Th and 109 to 304 Bq kg−1 for 40K. To evaluate the radiological effects, radium equivalent activity and external hazard are calculated. The magnitude of these results demonstrates the need of these ponds for a special treatment on site to reduce the exposure to a value below 100 μSv/y, by mixing the pond after drying the lagoon with clean soil to reduce the dose rate and minimise the environmental impact of NORM.\",\"PeriodicalId\":14141,\"journal\":{\"name\":\"International Journal of Low Radiation\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2017-10-31\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal of Low Radiation\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1504/IJLR.2017.10008589\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"Medicine\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Low Radiation","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1504/IJLR.2017.10008589","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"Medicine","Score":null,"Total":0}
Evaluation of naturally occurring radioactive materials in oilfields of south east of Libya
An investigation was carried out to find out the concentration of NORMs in evaporation ponds sludge in south eastern oilfield of Libya. Activity concentrations of 226Ra, 232Th and 40K in soil generated during oil production operations were determined using a gamma spectroscopy system based on high purity germanium (HPGe) detector. Concentrations ranged from 83 to 1000 Bq kg−1 for 226Ra, 59 to 315 Bq kg−1 for 232Th and 109 to 304 Bq kg−1 for 40K. To evaluate the radiological effects, radium equivalent activity and external hazard are calculated. The magnitude of these results demonstrates the need of these ponds for a special treatment on site to reduce the exposure to a value below 100 μSv/y, by mixing the pond after drying the lagoon with clean soil to reduce the dose rate and minimise the environmental impact of NORM.
期刊介绍:
The IJLR is a peer-reviewed journal dedicated to the publication of research articles, review papers and technical notes in all domains related to low-dose radiation, among which are the biological and health effects in humans and the biota, in vitro and in vivo research on low radiation effects, regulatory and policy aspects, risk estimation and public perception.