Measurement of Indoor and Outdoor Background Ionising Radiation Levels of Kwali General Hospital, Abuja

James, I. U.; Moses, I F; Vandi, J. N; Ikoh, UE

doi:10.4314/jasem.v19i1.12

Cited by 11 publications

(10 citation statements)

References 2 publications

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“…Generally, the gamma absorbed dose rate recorded in all locations using a hand held survey meter are within the same range, which can be attributed to geological homogeneity of the study area (11) . Absorbed dose rates for all measured locations fall below the standard background radiation level of 0.133 μSv/hr, recommended by the International Commission on Radiological Protection (22) and the corresponding effective dose was below the 1 mSv/yr maximum permissible limit for the general public set by the United Nations for Scientific Committee on the Effects of Atomic Radiation (3) , and 2.3 mSv/yr in India (10,23) , 0.19-1.64 mSv/yr in Abeokuta Nigeria (24) . The low radiation levels in the area can be attributed to natural sources as there is no contribution from artificial sources or cosmic radiation (19) .…”

Section: Discussionmentioning

confidence: 73%

Background radiation level measurement using hand held dosimeter and gamma spectrometry in Ijebu-Ife, Ogun State Nigeria

et al. 2021

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Background:The knowledge of distribution of radionuclides and background radiation levels in the environment is important for assessing the effects of radiation exposure due to both terrestrial and extra-terrestrial sources. Materials and Method:In-situ gamma dose survey and gamma spectrometry was employed to investigate background radiation levels in Ijebu-Ife. Results: In-situ gamma dose rates vary from 0.02 to 0.10 µSv/hr with mean value of 0.05 µSv/hr which is less than 0.133 μSv/hr, recommended by the ICRP. The resulting annual effective dose was below 1 mSv/yr maximum permissible limit for the general public set by the UNSCEAR, 2000. The activity concentrations of the three naturally occurring radionuclides in soils ranged from Below Detection Level (BDL) to 320.11 ± 28.53, 9.11 ± 1.65 and 8.55 ± 0.95 Bq/kg with mean values of 119.05 ± 11.24 Bq/kg, 4.44 ± 1.01 Bq/kg and 4.55 ± 0.62 Bq/kg respectively which are lower than the average values of 400, 35, and 30 Bq/kg recommended by the UNSCEAR, 2000 for 40 K, 226 Ra, and 232 Th respectively. The mean computed values for absorbed dose rate, annual effective dose and radium equivalent are 10.03 nGy/hr, 0.03 mSv/yr, 20.11 Bq/kg respectively, which fall within UNSCEAR, 2000 threshold. Conclusion: A significant positive relationship exists between the in-situ and evaluated effective dose equivalents (r = 0.89, p < 0.05). Radiation dose results indicate insignificant radiological risk, making the study area safe for living and agriculture purposes.

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Section: Discussionmentioning

confidence: 73%

Background radiation level measurement using hand held dosimeter and gamma spectrometry in Ijebu-Ife, Ogun State Nigeria

et al. 2021

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“…It can also cause retardation in children of mothers exposed to radiation during pregnancy [5]. Exposure to ionizing radiation can cause injuries and clinical symptoms; which may include a chromosomal transformation, cancer induction, free radical formation, bone necrosis and radiation catractogenesis [6]. Several studies have been carried out in Nigeria to measure the natural background radiation levels of hospitals.…”

Section: Introductionmentioning

confidence: 99%

“…. Also James et al [6] studied the background radiation levels at Kwali General Hospital Abuja. The exposure dose rates were all lower than the standard value of 0.133 µSv/h or 0.013 mR/h.…”

Section: Introductionmentioning

confidence: 99%

Radiological Risk Estimates Due to Background Exposures in Selected Hospitals in South – East Nigeria

Nwokeoji¹,

Avwiri²

2017

ACRI

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Radiation is present everywhere on the Earth and humans are exposed to it without being aware of it. Exposure to natural ionizing radiation is inevitable as long as we live on Earth. An in-situ measurement of indoor and outdoor exposure dose rates of Federal Medical Center Umuahia (FMC Umuahia) and Federal Medical Center Owerri (FMC Owerri) were measured with well calibrated radiation meters (Radalert-100 and Digilert-200). The average indoor and outdoor exposure rates for Federal Medical Center Umuahia were 0.014±0.003 and 0.014±0.003 mRh-1 , while that for Federal Medical Center Owerri were 0.012±0.002 mRh-1 and 0.013±0.002 mRh-1. The values show that the exposure rates for Federal Medical Center Owerri is within the range of the World threshold value of 0.013 mRh-1 , while that of FMC Umuahia is higher. The average indoor and outdoor absorbed dose rate measured at federal medical centre (FMC) Owerri are 106.7 and 104.7 nGyh-1 respectively while the average indoor and outdoor absorbed dose for Federal medical center (FMC) Umuahia are 120.1 and 116.8 nGyh-1 respectively. These values exceeded the

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“…Taking into account the international reports [5,[25][26][27][28][29], considering that public in Bangladesh spends about 20% of their time outdoor and the remaining 80% of their time indoor, the annual effective dose to radiation worker and public in AECD campus was calculated. Table 1 shows the annual effective dose received by worker and public during the period of November 2018-April 2019.…”

Section: Annual Effective Dosementioning

confidence: 99%

Estimation of indoor radiological hazard on worker and public health in atomic energy centre Dhaka campus, Bangladesh

Islam¹,

Rahman²,

Sakib³

et al. 2021

JAPH

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Introduction: Radiation gives tremendous benefit to mankind but unnecessary radiation may pose harm to worker and public. The purpose of the study is to continuous indoor radiation monitoring of Atomic Energy Centre Dhaka (AECD) campus to minimize the radiological risk on worker and public health in and around the campus. Materials and methods: Continuous indoor radiation monitoring was conducted in the AECD campus from November 2018-April 2019 using the Thermoluminescent dosimeters. The excess life-time cancer risk on worker and public health were estimated based on the continuous indoor radiation monitoring data. Results: The annual effective doses to the worker and public from indoor radiation were ranged from 0.28±0.11 mSv to 0.67±0.25 mSv and the mean was found to be 0.43±0.10 mSv. The excess life-time cancer risk (ELCR) on the radiation worker & public health were estimated based on the annual effective dose and ranged from 1.13 Χ 10-3 to 2.65 Χ 10-3 with an average of 1.72 Χ 10-3.The average annual effective dose and ELCR on worker and public health were lower than those of the worldwide average values. Conclusion: The radiological hazard on worker and public health in and around the AECD campus is not significant because those values are lower than the recommended values of the international commission on radiological protection. Monitoring of these indoor places would help in keeping a record of safe working practices during the handling of the radioactive substances and radiation generating equipments in a radiological facility.

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Measurement of Indoor and Outdoor Background Ionising Radiation Levels of Kwali General Hospital, Abuja

Cited by 11 publications

References 2 publications

Background radiation level measurement using hand held dosimeter and gamma spectrometry in Ijebu-Ife, Ogun State Nigeria

Background radiation level measurement using hand held dosimeter and gamma spectrometry in Ijebu-Ife, Ogun State Nigeria

Radiological Risk Estimates Due to Background Exposures in Selected Hospitals in South – East Nigeria

Estimation of indoor radiological hazard on worker and public health in atomic energy centre Dhaka campus, Bangladesh

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