Radiological dose assessment of natural radioactivity in Malaysian tiles using resrad-build computer code

Aznan Fazli Ismail, Shittu Abdullahi, Supian Samat, Muhamad Samudi Yasir

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This research reports the annual effective dose of dwellers based on the finding of natural radioactivity concentrations in Malaysian tiles. A total of 30 tiles samples obtained from the manufacturer or bought directly from local hardware store. Natural radioactivity was analyzed using gamma spectrometry system for 12 h counting times. The activity concentration of 226Ra, 232Th, and 40K in the analyzed samples ranged from 37.50 – 158.05 Bq kg-1, 42.22 – 80.19 Bq kg-1 and 349.46 – 750.18 Bq kg-1, respectively. The determined radium equivalent activity was below than the recommended limit of 370 Bq kg-1. The external dose received by dwellers due to natural radionuclides in tiles were projected for 1, 5, 10, 20 and 50 years through six exposure pathways using Resrad-build computer code. The results showed that the annual effective dose received by dwellers increased for the investigated timelines but still lower than the annual recommended limit of 1500 µSv. The simulation result also indicates that radon gas was the primary radiation exposure which contributes 80-94 % from the total radiation exposure to dwellers.

Original languageEnglish
Pages (from-to)1017-1023
Number of pages7
JournalSains Malaysiana
Volume47
Issue number5
DOIs
Publication statusPublished - 1 May 2018

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tiles
radioactivity
radiation dosage
computer programs
dosage
radium
radon
radioactive isotopes
counting
hardware
gases
spectroscopy
simulation

Keywords

  • Annual effective dose
  • Natural radionuclides
  • Resrad-Build computer code
  • Tiles

ASJC Scopus subject areas

  • General

Cite this

Radiological dose assessment of natural radioactivity in Malaysian tiles using resrad-build computer code. / Ismail, Aznan Fazli; Abdullahi, Shittu; Samat, Supian; Yasir, Muhamad Samudi.

In: Sains Malaysiana, Vol. 47, No. 5, 01.05.2018, p. 1017-1023.

Research output: Contribution to journalArticle

Ismail, Aznan Fazli ; Abdullahi, Shittu ; Samat, Supian ; Yasir, Muhamad Samudi. / Radiological dose assessment of natural radioactivity in Malaysian tiles using resrad-build computer code. In: Sains Malaysiana. 2018 ; Vol. 47, No. 5. pp. 1017-1023.
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