granite quarry radiation exposure

(PDF) Assessment of Radionuclides in Selected Granite Quarry …

The assessment of radionuclides in selected granite quarry sites in Ohimini and GwerEast Local Government Areas of Benue State was carried out using a 76x76mm NaI (TI) detector crystal optically ...

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Investigation of the Radiation Exposure Rate and Noise …

Ugwu et al (2008) carried out the assessment of radioactivity content of quarry dust in Abakaliki, Ebonyi State and reported a higher count rate and specific activity for 232 Th than that of 238 U ...

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RESPIRABLE DUST EXPOSURE AND RESPIRATORY HEALTH AMONG MALE GRANITE

Chronic exposure to granite rock-crushing dust is a major risk factor for respiratory problems in quarry workers. A cross-sectional study was conducted to determine the relationship between ...

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Natural radioactivity in granite stones used as building …

The activity concentrations of (232)Th, (226)Ra and (40)K in the selected granite samples ranged from 18 to 178, 6 to 160 and 556 to 1539 Bq kg (-1), respectively. The radium …

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Assessment of occupational exposure in a granite quarry …

Request PDF | Assessment of occupational exposure in a granite quarry and processing factory | Workers in the granite industry face an occupational hazard: silicosis due to the crystalline silica ...

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Doses from radon 222 irradiation for workers of the granite …

Granite quarry workers receive double radiation exposure of 222Rn due to exposure in the workplace and at home. The load in the workplace due to inhalation of 222Rn the air …

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Quantification of radiological hazards associated with natural

Assessment of activity levels of radionuclides that exist in soil, granite, and charnockite rock samples is very crucial because it exhibits an enhanced elemental concentration of uranium (U) and thorium (Th) contributing higher natural background activity than usual in the environment and it may cause health risk to human health …

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What about radon and radioactivity in granite countertops?

It is prudent to limit your family's exposure to radon whenever possible. Commonly employed mitigation techniques can reduce the radon level coming from soil beneath your home to 2 pCi/L or less in most homes. ... The EPA will continue to monitor and analyze the evolving research on radiation and granite countertops and will update …

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Occupational exposure due to naturally occurring radionuclide material

The potential occupational exposure in granite quarry industry due to the presence of naturally occurring radioactive material (NORM) has been investigated.

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ASSESSING EXPOSURE TO RADON AND RADIATION …

significantly increase exposures and doses of radiation in homes. A comprehensive study was designed to answer this question in a scientifically valid manner. The in-depth analysis focused on risks of exposure to radon gas and ionizing radiation associated with the …

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Natural radioactivity measurements in the granite rock of quarry …

The gamma radiation dose for the occupational work in granite mines (Quarry Sites) is due to the granite content of radionuclides which can be estimated by employing a half-infinite source of a homogenous distribution and by considering only the contribution gamma-radiation dose, from the natural radionuclides in the granite.

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Silica and Worker Health | Silica | CDC

Granite and other minerals. Artificial stone. The most common form of crystalline silica is quartz. However, it can also occur in the form of cristobalite and tridymite. Exposure to cristobalite typically occurs in foundries where intense heat of molten metal causes cristobalite to form in clay molds.

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Preliminary investigation of the ambient radiation levels of …

The study of the ambient radiation levels around some mining sites in Benue State has been carried out using radiation meters; Inspector 06250 and Dose Meter 6150AD. A total of four mining sites were selected for measurements. These sites include the Guma salt mine, Makurdi clay mine, Mkar quarry in Gboko and the Otukpo clay mine. The values …

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New Findings on Radon from Marble Institute of America

• Occupational exposure to radon for granite quarry workers is insignificant. It's important to remember that all natural products, especially stone, minerals, and sand, contain trace amounts of some radioactive elements called NORMS (or Naturally Occurring Radioactive Minerals) that can produce "measurable" amounts of radiation, …

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Bar chart comparing the mean radiation exposure rate with …

Environmental assessments of background radiation exposure rate and noise levels were carried out using radalert-100 and B.K 732 sound meter. The results obtained showed that the zonal mean ...

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Radiation Exposure Level in some Granite Quarry sites …

Radiation exposure level in some granite quarry sites in Ohimini and Gwer-East Local Government Areas of Benue State was carried out using radiation meter (radiation alert inspector). The research investigated only the exposure dose rate, the mean absorbed dose and the mean annual effective dose equivalent of the radiation.

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Health And Safety In Quarrying

the intensity and penetrability of ionizing radiation. Potential exposure Potential exposure means the opportunity to do harm. In assessing the potential exposure to the hazard it is necessary to consider: the proportion of the work-force who are or will be exposed to the hazard (in particular the frequency of exposure and length of time of ...

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(PDF) Occupational exposure due to naturally occurring …

Occupational exposure due to naturally occurring radionuclide material in granite quarry industry. Ademola JA. Source Department of Physics, University of Ibadan, Ibadan, Nigeria. jaaademola@yahoo Abstract The potential occupational exposure in granite quarry industry due to the presence of naturally occurring radioactive material (NORM) has …

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Assessing exposure to granite countertops--Part 1: Radiation

Humans are continuously exposed to low levels of ionizing radiation. Known sources include radon, soil, cosmic rays, medical treatment, food, and building products such as gypsum board and concrete. Little information exists about radiation emissions and associated doses from natural stone finish materials such as granite countertops in …

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Excess Lifetime Cancer Risk Associated with Granite Bearing …

Granite is igneous rock composed primarily of quartz, K-feldspar, and mica that is utilized for decorative purposes both inside and outside the home, such as …

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ASSESSING EXPOSURE TO RADON AND RADIATION …

contributions from granite countertops to radon levels in homes are lower than background levels of radon exposure typically found outdoors and indoors. …

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Radiological risk assessment of naturally occurring …

An appraisal of activity concentrations of 40 K, 232 Th, 238 U, radiation exposure levels and the potential radiological hazards in the granite rock of selected quarry sites in Edo State, South-south Nigeria has been carried out using the gamma-ray spectroscopy technique. The results show that these naturally occurring radionuclides …

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Investigation of the Radiation Exposure Rate and Noise …

Keywords: Radiation Exposure, Noise level, Quarry site, Radiation survey, Noise survey 1. INTRODUCTION Radionuclides that were part of the original composition of the earth and their progenies emit gamma radiation which contributes to a large share of environmental radiation dose [1]. Although

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What is Radon and How are We Exposed to It? | IAEA

Sometimes together with Radon-220 — a product of Thorium-232 decay — Radon-222 acts as the main contributor to radiation exposure for the public. In terms of the protection to be provided, no differentiation is made between these two causes of exposure. ... Levels of radon can be high in groundwater, particularly in areas of …

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Assessment of Radiation Hazard Indices Caused by Naturally …

region, quarry workers, and construction workers are, therefore, not immune to radiation exposure caused by the quarries. It is suggested that the Nigerian Environmental Protection Agency (NEP A ...

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Assessment of Radionuclides in Selected Granite Quarry …

Granite Quarry, Activity Concentration, Absorbed Dose, Annual Effective Dose and Radiation Hazards ... radiation exposure given by UNSCEAR-2000 publication. 1. Introduction

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Radiation Exposure Level in some Granite Quarry sites …

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Assessment of Radiation Related Health Risks of Quarry …

We therefore sought to evaluate the level of radiation emitted from quarry sites in Lapai and its environs to ascertain the level and trend of contamination over time so as to protect quarry workers and inhabitants of the vicinity from the dangers associated with the exposure to radiation especially the ionizing radiations. ... The highest ...

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Radiation Exposure Level in some Granite Quarry sites …

Citation:OO (2018) Radiation Exposure Level in some Granite Quarr y sites within Ohimini and Gwer-East Local Government Areas of Benue State Nigeria. Insights Med Phys Vol.2 No.3:12 Abstract ... Radiation Exposure Level in some Granite Quarry sites within Ohimini and Gwer-East Local Government Areas of Benue State Nigeria ...

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Quarry Tool Box Talks

TQ115: Tool Box Talk- PPE Foot Protection Overview (Quarry) Description: MSHA requires workers to use protective footwear when working in areas where there is a danger of foot injuries due to falling or rolling objects, or objects piercing the sole, or when the use of protective footwear will protect the affected employee from an electrical hazard, such as …

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