[Home ] [Archive]    
:: Main :: About :: Current Issue :: Archive :: Search :: Submit :: Contact ::
Main Menu
Home::
IJRR Information::
For Authors::
For Reviewers::
Subscription::
News & Events::
Web Mail::
::
Search in website

Advanced Search
..
Receive site information
Enter your Email in the following box to receive the site news and information.
..
ISSN
Hard Copy 2322-3243
Online 2345-4229
..
Online Submission
Now you can send your articles to IJRR office using the article submission system.
..

AWT IMAGE

AWT IMAGE

:: Volume 19, Issue 1 (1-2021) ::
Int J Radiat Res 2021, 19(1): 89-97 Back to browse issues page
Quantification of radionuclides and associated radiological risk estimation of coal combustion residues from a South African coal-fired power plant
U.A.Q. Ahmed , N.J. Wagner , A. Joubert
National Nuclear Regulator, Eco-Park Estate, Centurion, 0157, South Africa , uwais78692@yahoo.com
Abstract:   (2069 Views)
Background: Radionuclides occur in coal combustion residues, such as fly ash and bottom ash, which are by-products of coal combustion. They pose potential radiological risks to people present in the surrounding areas. Materials and Methods: Gamma spectrometry was performed to determine the radionuclide activity concentrations in a coal-driven power plant located in the Limpopo province, South Africa, to assess the radiological impacts of the ash stored in ash dumps adjacent to the plant. Results: The mean (+ SD) activity concentrations were found to be 144.3±4, 62±2.1, and 315.9±4.9 Bq/kg for 226Ra, 232Th, and 40K, respectively, which are comparable to those found in previous studies. The radium equivalent activity was determined to be 258.43 Bq/kg. The average values of internal and external hazard indices were 1.09 and 0.70, respectively. With the exception of the internal hazard index, all the other indices were within the prescribed ranges indicated by the literature. Furthermore, the mean total annual effective dose received by plant workers was found to be 0.070 mSv/y, which is within the limit of 1.0 mSv/y prescribed by the IAEA. The average excess lifetime cancer risk value was 0.49 × 10-3, which is higher than the UNSCEAR precautionary limit of 0.29 × 10-3 but lower than the ICRP limit of 0.05 for low-level radiation. Conclusion: Ash dust inhalation was identified as the most significant exposure pathway among plant workers. However, the results demonstrated that storing of ash at this plant does not constitute any radiological threat to people in the adjacent regions. 
Keywords: Radionuclides, flyash, hazard index, excess lifetime cancer risk (ELCR)
Full-Text [PDF 1829 kb]   (815 Downloads)    
Type of Study: Original Research | Subject: Medical Physics
Send email to the article author

Add your comments about this article
Your username or Email:

CAPTCHA



XML     Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Ahmed U, Wagner N, Joubert A. Quantification of radionuclides and associated radiological risk estimation of coal combustion residues from a South African coal-fired power plant. Int J Radiat Res 2021; 19 (1) :89-97
URL: http://ijrr.com/article-1-3460-en.html


Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Volume 19, Issue 1 (1-2021) Back to browse issues page
International Journal of Radiation Research
Persian site map - English site map - Created in 0.05 seconds with 50 queries by YEKTAWEB 4652