scholarly journals Assessment of solid mineral to soil radioactivity contamination index in selected mining sites and their radiological risk indices to the public

2021 ◽  
pp. 1-19
Author(s):  
Ezekiel Oghenenyerhovwo Agbalagba ◽  
Mohammed S. Chaanda ◽  
Stephen U. Egarievwe
Keyword(s):  
Radiological Risk ◽  
Contamination Index ◽  
Mining Sites ◽  
The Public ◽  
Soil Radioactivity ◽  
Risk Indices

scholarly journals Assessment of Solid Mineral to Soil Radioactivity Contamination Index in Selected Mining Sites and their Radiological Risk Indices to the Public

2021 ◽  
Author(s):  
Ezekiel Oghenenyerhovwo Agbalagba ◽  
Mohammed S. Chaanda ◽  
Stephen Uloho U. Egarievwe
Keyword(s):  
Mean Value ◽  
Soil Samples ◽  
Permissible Limit ◽  
Radiation Hazard ◽  
Hazard Indices ◽  
Mean Values ◽  
Mining Sites ◽  
The Public ◽  
Risk Indices ◽  
Gamma Index

Abstract This study examined the radioactivity levels of soil samples within selected solid mining sites in Nigeria using high purity germanium (HpGe) detector. Sixty soil samples in all were collected from the ten solid mineral mining sites investigated and six samples were collected as control samples from non-mining environment for analyses. The results of the activity concentration values obtained for 40K, 226Ra and 232Th are 100.22 Bq kg-1, 33.15 Bq kg-1 and 77.31 Bq kg-1 respectively. The 226Ra and 40K activities were found to be within the United Nation Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) acceptable permissible limit, but the 232Th mean value was above the permissible limit of 30 Bq kg-1 for the public. In comparison, 40K, 226Ra and 232Th soil samples mean activity concentrations were higher than the control soil samples values by 48.6%, 43.7% and 62.3% respectively. The results of estimated radiation hazard indices indicate average values of 150.72 Bq kg-1, 68.40T, 83.65µSvy-1 and 454.70µSvy-1 for the Radium Equivalent (h), iDose Equivalent (AEDE) and Annual Gonadal Equivalent Dose (AGED) respectively. The mean values for External Hazard Indices (Hex, Hin), Representative Gamma index (s) and Excess Life Cancer Risk (ELCR) were 0.41, 0.50, 1.06 and 0.29 x10-3 respectively. The statistical analysis shows positive skewness.

scholarly journals A case study of management and disposal of TENORMs: radiological risk estimation by TSD Dose and RESRAD-ONSITE

2021 ◽  
Vol 8 (5) ◽  
pp. 465-480
Author(s):  
Francesca Giacobbo ◽  
◽  
Mirko Da Ros ◽  
Elena Macerata ◽  
Eros Mossini
Keyword(s):  
Risk Estimation ◽  
Sensitivity Analyses ◽  
Disposal Site ◽  
Radiological Risk ◽  
Radioactive Materials ◽  
The Public ◽  
Naturally Occurring ◽  
Operational Activities ◽  
The Impact

<abstract> <p>Naturally Occurring Radioactive Materials (NORMs) and Technologically Enhanced NORMs (TENORMs) are among the principal sources of radiation exposure for humans and for the environment. Therefore, the assessment of the impact of NORMs and TENORMs waste on human health is a key issue for their management and for acceptance of disposal sites. The radiological doses to workers and public due to TENORMs disposal depend on the waste inventory, on the usage of the site during operational activities and post closure phase and on the presence of dwelling areas in the vicinity of the disposal site. In the present study it is presented a methodology to preliminary assess the feasibility of a disposal of TENORMs, mainly constituted by phosphate sludges, originated from phosphoric acid industry activities. The hypothetical case study here presented is inspired by a real case study. Different possible scenarios have been considered. The potential doses to workers and to the public on-site have been estimated by the use of the TSD Dose and the RESRAD on-site codes both during the production life cycle of the site and once it ended. Sensitivity analyses were conducted to evaluate the impact of some key parameters, such the coverage thickness and wind velocity, on potential risk for workers and public.</p> </abstract>

scholarly journals Teresterial Background Ionizing Radiation around Lead/Zinc Mining Site in Ishiagu, Ebonyi State, Nigeria

2021 ◽  
pp. 1-13
Author(s):  
C. Mgbeokwere ◽  
C. P. Ononugbo ◽  
A. Bubu
Keyword(s):  
Ionizing Radiation ◽  
The Body ◽  
Exposure Rate ◽  
Radiological Risk ◽  
Radiation Level ◽  
Mining Site ◽  
Mining Sites ◽  
Lead Zinc ◽  
Radiological Health ◽  
Risk Parameters

Background ionizing radiation around Lead/Zinc mining sites at Ishiagu, Ebonyi State was carried out using appropriate equipment. The background ionizing radiation of the environment was determined by measuring the radiation exposure rates using Radalert-200 and Geographical Positioning System (GPS). Radiological health parameters and effective dose to different organs of the body was estimated. The average exposure rate of 0.00017mSv/h (0.017mR/h) measured was relatively higher than the world acceptable value of 0.00013mSv/h (0.013mR/h ). All the radiological risk parameters estimated are relatively high. The result of this work shows that the mining µactivities have enhanced the radiation level of Ishiagu and health status of the populace.

PUBLIC EXPOSURE TO EXTERNAL GAMMA RADIATION ON A MINE LANDFORM COVERED BY LOW URANIUM GRADE WASTE ROCK

2019 ◽  
Vol 188 (1) ◽  
pp. 123-128
Author(s):  
Che Doering
Keyword(s):  
Gamma Radiation ◽  
Dose Rate ◽  
Annual Effective Dose ◽  
Waste Rock ◽  
Uranium Mine ◽  
Mining Sites ◽  
The Public ◽  
Order Of Magnitude ◽  
Public Exposure ◽  
General Guidance

Abstract Public exposure to external gamma radiation on the waste-rock-covered-8.5-km2-planned final landform from rehabilitation of the Ranger uranium mine was assessed. The average above-background dose rate from external gamma radiation on the planned final landform was determined to be 6.0 × 10−3 mSv d−1. This dose rate was one order of magnitude higher than that for inhalation of radon progeny and two orders of magnitude higher than that for inhalation of radionuclides in dust on the final landform. The above-background annual effective dose to the public from external gamma radiation when the envisioned land use by Aboriginal traditional owners was averaged over the entire 79 km2 Ranger Project Area was about 4.1 × 10−2 mSv. The results of this study may provide general guidance to sites elsewhere on the relative importance of the external gamma pathway and assist in the development or assessment of rehabilitation plans for uranium mining sites.

scholarly journals INDOOR RADON MEASUREMENT IN FORMER URANIUM MINING REGIONS IN BULGARIA

2012 ◽  
Vol 2 (4) ◽  
Author(s):  
Kremena Ivanova ◽  
Victor Badulin
Keyword(s):  
Radon Concentration ◽  
Residential Buildings ◽  
Indoor Radon ◽  
Uranium Mining ◽  
Open Pit ◽  
Open Pit Mining ◽  
Radiological Risk ◽  
Indoor Radon Concentration ◽  
Radon Measurement ◽  
Mining Sites

Radon exposure situations have the characteristics of existing exposure situations since the source is unmodified concentrations of ubiquitous natural activity in the earth’s crust. Human activities may create or modify pathways increasing indoor radon concentration compared to outdoor background. The mining and processing of uranium bearing minerals generate a variety of waste materials containing a number of radioactive and non-radioactive hazardous constituents. Conventional underground and open pit mining activities produce overburden, mineralized waste and barren waste rock, which are generally low in their uranium and thorium contents and are left at the mine site. The study focuses on regions of former uranium mining industries, where the radiological risk is higher. Methods: The cumulative (passive) method was used for the study. The measurements are carried out by E PERM® system. Detectors are placed for approximately 6 months in randomly selected houses in former uranium mining sites - Sliven-villages area, Eleshnica and Bachkovo. These sites are situated in mountains in different part of Bulgaria. Results: The results of indoor radon concentration for investigation villages range from 125 Bq/m3 to 4000 Bq/m3. The maximum concentration was measured in Bachkovo village in Rodopi Mountain. This village is the least affected by the former uranium mining industry. Conclusion: The results prove assumption that former uranium mining sites are radon prone areas where radiological risk is higher. The level of indoor radon of residential buildings in areas with higher uranium availability is around or above the recommended reference radon levels. The maximum value of the concentration of radon is measured in areas less affected by uranium mining, proving the necessity to undertake a radon national survey to determine exact radon prone areas. Key words: Radon concentration, long-term measurement, radon prone areas

Sahel gold boom boosts economies but poses challenges

2019 ◽  
Keyword(s):  
Public Sector ◽  
Burkina Faso ◽  
Gold Mining ◽  
West African ◽  
African Countries ◽  
Content Type ◽  
Mining Sites ◽  
The Public ◽  
Revenue Source ◽  
Formal Employment

Subject Gold mining in the Sahel. Significance Gold has become a key export and revenue source for several West African countries, helping to diversify fragile Sahel economies. Alongside industrial mines, artisanal digging is now a major provider of livelihoods but also poses serious health and environmental problems. Impacts Industrial mines will remain a crucial source of formal employment in provincial areas with few salaried jobs outside the public sector. The flow of gold exports will alter the geographical balance of West African trade, boosting exports to trading centres such as Switzerland. Burkina Faso shows particular investment promise, but rising insecurity, including around mining sites, may deter many firms.

Soil radioactivity levels and radiological risk assessment in the highlands of Hunza, Pakistan

2012 ◽  
Vol 153 (3) ◽  
pp. 390-399 ◽  
Author(s):  
M. Ali ◽  
S. Iqbal ◽  
M. Wasim ◽  
M. Arif ◽  
F. Saif
Keyword(s):  
Risk Assessment ◽  
Radiological Risk ◽  
Soil Radioactivity ◽  
Radioactivity Levels

Replications can cause distorted belief in scientific progress

2018 ◽  
Vol 41 ◽  
Author(s):  
Michał Białek
Keyword(s):  
Real World ◽  
Scientific Progress ◽  
The Public ◽  
Psychological Science

AbstractIf we want psychological science to have a meaningful real-world impact, it has to be trusted by the public. Scientific progress is noisy; accordingly, replications sometimes fail even for true findings. We need to communicate the acceptability of uncertainty to the public and our peers, to prevent psychology from being perceived as having nothing to say about reality.

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