Radiological risk of building materials using homemade airtight radon chamber

Norafatin Khalid, Amran Ab. Majid, Redzuwan Yahaya, Muhamad Samudi Yasir

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Soil based building materials known to contain various amounts of natural radionuclide mainly 238U and 232Th series and 40K. In general most individuals spend 80% of their time indoors and the natural radioactivity in building materials is a main source of indoor radiation exposure. The internal exposure due to building materials in dwellings and workplaces is mainly caused by the activity concentrations of short lived 222Radon and its progenies which arise from the decay of 226Ra. In this study, the indoor radon concentration emanating from cement brick, red-clay brick, gravel aggregate and Portland cement samples were measured in a homemade airtight radon chamber using continuous radon monitor 1029 model of Sun Nuclear. Radon monitor were left in the chamber for 96 hours with an hour counting time interval. From the result, the indoor radon concentrations for cement brick, red-clay brick, gravel aggregate and Portland cement samples determined were 396 Bq m-3, 192 Bq m-3, 176 Bq m-3 and 28 Bq m-3, respectively. The result indicates that the radon concentration in the studied building materials have more than 100 Bq m-3 i.e. higher than the WHO action level except for Portland cement sample. The calculated annual effective dose for cement brick, red-clay brick, gravel aggregate and Portland cement samples were determined to be 10 mSv y-1, 4.85 mSv y-1, 4.44 mSv y-1 and 0.72 mSv y-1, respectively. This study showed that all the calculated effective doses generated from indoor radon to dwellers or workers were in the range of limit recommended ICRP action levels i.e. 3 - 10 mSv y-1. As consequences, the radiological risk for the dwellers in terms of fatal lifetime cancer risk per million for cement brick, red-clay brick, gravel aggregate and Portland cement were calculated to be 550, 267, 244 and 40 persons respectively.

Original languageEnglish
Title of host publicationAIP Conference Proceedings
PublisherAmerican Institute of Physics Inc.
Pages207-210
Number of pages4
Volume1584
ISBN (Print)9780735412163
DOIs
Publication statusPublished - 2014
EventInternational Nuclear Science, Technology and Engineering Conference 2013: Advancing Nuclear Research and Energy Development, iNuSTEC 2013 - Kuala Lumpur
Duration: 30 Sep 20132 Oct 2013

Other

OtherInternational Nuclear Science, Technology and Engineering Conference 2013: Advancing Nuclear Research and Energy Development, iNuSTEC 2013
CityKuala Lumpur
Period30/9/132/10/13

Fingerprint

cements
bricks
radon
chambers
gravels
clays
dosage
progeny
radiation dosage
radioactivity
radioactive isotopes
monitors
soils
counting
sun
cancer
intervals
life (durability)
decay

Keywords

  • annual effective dose
  • emanation
  • fatal lifetime cancer risk
  • Radon
  • radon chamber

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Khalid, N., Ab. Majid, A., Yahaya, R., & Yasir, M. S. (2014). Radiological risk of building materials using homemade airtight radon chamber. In AIP Conference Proceedings (Vol. 1584, pp. 207-210). American Institute of Physics Inc.. https://doi.org/10.1063/1.4866132

Radiological risk of building materials using homemade airtight radon chamber. / Khalid, Norafatin; Ab. Majid, Amran; Yahaya, Redzuwan; Yasir, Muhamad Samudi.

AIP Conference Proceedings. Vol. 1584 American Institute of Physics Inc., 2014. p. 207-210.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Khalid, N, Ab. Majid, A, Yahaya, R & Yasir, MS 2014, Radiological risk of building materials using homemade airtight radon chamber. in AIP Conference Proceedings. vol. 1584, American Institute of Physics Inc., pp. 207-210, International Nuclear Science, Technology and Engineering Conference 2013: Advancing Nuclear Research and Energy Development, iNuSTEC 2013, Kuala Lumpur, 30/9/13. https://doi.org/10.1063/1.4866132
Khalid N, Ab. Majid A, Yahaya R, Yasir MS. Radiological risk of building materials using homemade airtight radon chamber. In AIP Conference Proceedings. Vol. 1584. American Institute of Physics Inc. 2014. p. 207-210 https://doi.org/10.1063/1.4866132
Khalid, Norafatin ; Ab. Majid, Amran ; Yahaya, Redzuwan ; Yasir, Muhamad Samudi. / Radiological risk of building materials using homemade airtight radon chamber. AIP Conference Proceedings. Vol. 1584 American Institute of Physics Inc., 2014. pp. 207-210
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