Radiological protection against exposure to naturally occurring radioactive material

Haridasan, P.P.; Harikumar, M.; Ravi, P.M.; Tripathi, R. M.

doi:10.4103/0972-0464.169367

Cited by 4 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Both planned and existing exposure situations show an apparent "duality" in sorting considerations regarding fishery foods of concern by the WTO. Similar debates, such as exposure to radon and radon progeny in workplaces and aircrew exposed to cosmic radiation, can be found elsewhere (Jensen 2010;EC 2013;Haridasan 2012Haridasan , 2013Haridasan et al 2015;Cool 2015;ICRP 2014ICRP , 2016. These exposure puzzles are treated either as planned exposure situations or as existing exposure situations.…”

Section: Planned Emergency and Existing Exposure Situations In Icrp P...supporting

confidence: 64%

A Modification to the Situation-based Scheme for Sorting Exposures Proposed in ICRP Publication 103

Cui

2022

Health Physics

View full text Add to dashboard Cite

The International Commission on Radiological Protection (ICRP) issued its current recommendations in 2007, introducing an evolution from a previously process-based protection approach (practices and interventions) to a situation-based approach (planned, existing, and emergency). In most countries, radiation protection standards are generally in line with the new recommendations by the ICRP. Unfortunately, in many cases, situations involving sources of natural or artificial origin may be in a state of contradiction. Logical incompleteness and unsoundness in the framework of exposure situations can be found in current ICRP recommendations. There are situations that do not readily fall into any category. To contribute to a more reasonable situation-based approach for the radiological protection community, we recommend here a possible framework of exposure situations, i.e., planned, unplanned, and naturally occurring, that forms one coherent system. We believe this system will provide increased clarity that will help resolve possible sorting problems.

show abstract

Section: Planned Emergency and Existing Exposure Situations In Icrp P...supporting

confidence: 64%

A Modification to the Situation-based Scheme for Sorting Exposures Proposed in ICRP Publication 103

Cui

2022

Health Physics

View full text Add to dashboard Cite

show abstract

“…These regulations reinforce the need for some sectors of the metallurgical and mining industry to focus on protection of individuals exposed to radiation. Included are industries working with minerals or slags containing radionuclides from the natural thorium and uranium series, such as the tin industry [3,4]. The production of tin is performed classically according to Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Tin Recovery From Concentrates Through a Model for Prediction of Slag Composition

Clemente¹,

Silva²,

Silva³

2017

ABM Proceedings

View full text Add to dashboard Cite

Processing of tin slags in reduction furnaces was studied in order to optimize tin recovery and reduce recirculation rates of slags containing thorium and uranium oxides. A theoretical approach considering a mass balance of the process was developed and adjusted by experimental results in order to predict the final slag composition. A metallic phase (FeSnSi) was discovered trapped in the slag due to high apparent viscosity, raising the FeO and SnO2 contents of the slag sample. This FeSnSi alloy is rich in tin and its recovery would help to reduce the slags recirculation. High contents of ZrO2 were found in the slag, restricting it from reaching complete fluid phase. Through an analysis of the slag in the CaO-FeOx-SiO2 and ZrO2-CaO-SiO2 phase systems it can be concluded that final slags should be modeled aiming fluid phase at working conditions and additions should be planned in order to control ZrO2 levels.

show abstract

“…In practice, many radiological issues arise when natural constituents are used as construction materials (Haridasan et al, 2015). Glass and ceramic goods are made from soils bearing naturally existing radioactive materials which including UO 2 , ThO 2 , and ZrO 2 (Deng et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

Estimation of radon and natural radioactive emissions from two of the most widely used construction materials in Egypt

Abd-Elghany,

Diab,

Yousef

et al. 2023

Front. Built Environ.

View full text Add to dashboard Cite

As the risk of lung cancer increases with increasing radon exposure, the preferred measure of this risk is the long-term average radon level. The assessment of the radiation risk in workplaces in Egypt is constrained by the lack of experimental data about the measurements of natural radioactivity emitted from some common building materials and radon concentration within the buildings. The natural radioactive Ra-226, Th-232 series, and K-40 were computed in (Bq/kg) by a pure hyperactive germanium detector based on gamma spectroscopy to determine the potential health risk from exposure to gamma radiation induced by commonly used construction materials in Egypt such as ceramics and granite materials. The spatial variations of radon concentrations within two buildings, in over 50 rooms, made from two different types of building materials were surveyed using nuclear detectors (CR-39) to assess radon concentration for two successive 6 months. To analyze the relationship through radon concentration and floor levels for the use of ceramic tile improved construction materials, tier average ratios respecting the ground floor as a reference-grade consideration were also computed. All the findings of this research were analyzed and contrasted with the traditional ceramic construction material and it was clear that the “ceramics tile construction building” is a hygienic workplace which may be attributed to the use of improved construction materials and radiation shielding.

show abstract

Radiological protection against exposure to naturally occurring radioactive material

Cited by 4 publications

References 0 publications

A Modification to the Situation-based Scheme for Sorting Exposures Proposed in ICRP Publication 103

A Modification to the Situation-based Scheme for Sorting Exposures Proposed in ICRP Publication 103

Optimization of Tin Recovery From Concentrates Through a Model for Prediction of Slag Composition

Estimation of radon and natural radioactive emissions from two of the most widely used construction materials in Egypt

Contact Info

Product

Resources

About