Radiological risk assessment of concrete building materials in Peninsular Malaysia

The use of building materials containing high concentration of naturally occurring radioactive material (NORM) may result in the increase of radiation dose rate inside the building. The assessment of radiological hazard in building materials is necessary due to the concern of radiological impact to...

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Main Authors:	Aznan Fazli Ismail, Amran Ab. Majid, Muhamad Samudi Yasir, Redzuwan Yahaya, Ismail Bahari
Format:	Article
Language:	English
Published:	Universiti Kebangsaan Malaysia 2010
Online Access:	http://journalarticle.ukm.my/7379/ http://journalarticle.ukm.my/7379/ http://journalarticle.ukm.my/7379/1/01_Md_Yeaminhossain.pdf

id	ukm-7379
recordtype	eprints
spelling	ukm-73792016-12-14T06:43:54Z http://journalarticle.ukm.my/7379/ Radiological risk assessment of concrete building materials in Peninsular Malaysia Aznan Fazli Ismail, Amran Ab. Majid, Muhamad Samudi Yasir, Redzuwan Yahaya, Ismail Bahari, The use of building materials containing high concentration of naturally occurring radioactive material (NORM) may result in the increase of radiation dose rate inside the building. The assessment of radiological hazard in building materials is necessary due to the concern of radiological impact to its dwellers. Thus, the objectives of this study were to determine the level of natural radioactivity in Malaysia’s building materials and to assess the associated radiological risk among dwellers. A total of 46 sands, 43 gravels and 13 Portland cement samples have been analysed using a gamma spectrometry system. Activity concentrations of 226Ra, 232Th and 40K were found to be in the range of 4.4 Bq kg-1 to 354.9 Bq kg-1, 2.4 Bq kg-1 to 263.9 Bq kg-1 and 15.1 Bq kg-1 to 1931.7 Bq kg-1, respectively. The indoor dose rates were found to be lower than 1500 μSv year-1, which is the recommended limit for building materials. A few samples were found to have high values of the representative gamma level index, external hazard index and internal hazard index compared to the suggested value of one. The radiological risk assessments to dwellers using Resrad-Build computer code showed that the dose rates for the Portland cement, sand and gravel increased annually over a period of 50 years. Universiti Kebangsaan Malaysia 2010-08 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/7379/1/01_Md_Yeaminhossain.pdf Aznan Fazli Ismail, and Amran Ab. Majid, and Muhamad Samudi Yasir, and Redzuwan Yahaya, and Ismail Bahari, (2010) Radiological risk assessment of concrete building materials in Peninsular Malaysia. Sains Malaysiana, 39 (4). pp. 607-613. ISSN 0126-6039 http://www.ukm.my/jsm/english_journals/vol39num4_2010/contentsVol39num4_2010.html
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	The use of building materials containing high concentration of naturally occurring radioactive material (NORM) may result in the increase of radiation dose rate inside the building. The assessment of radiological hazard in building materials is necessary due to the concern of radiological impact to its dwellers. Thus, the objectives of this study were to determine the level of natural radioactivity in Malaysia’s building materials and to assess the associated radiological risk among dwellers. A total of 46 sands, 43 gravels and 13 Portland cement samples have been analysed using a gamma spectrometry system. Activity concentrations of 226Ra, 232Th and 40K were found to be in the range of 4.4 Bq kg-1 to 354.9 Bq kg-1, 2.4 Bq kg-1 to 263.9 Bq kg-1 and 15.1 Bq kg-1 to 1931.7 Bq kg-1, respectively. The indoor dose rates were found to be lower than 1500 μSv year-1, which is the recommended limit for building materials. A few samples were found to have high values of the representative gamma level index, external hazard index and internal hazard index compared to the suggested value of one. The radiological risk assessments to dwellers using Resrad-Build computer code showed that the dose rates for the Portland cement, sand and gravel increased annually over a period of 50 years.
format	Article
author	Aznan Fazli Ismail, Amran Ab. Majid, Muhamad Samudi Yasir, Redzuwan Yahaya, Ismail Bahari,
spellingShingle	Aznan Fazli Ismail, Amran Ab. Majid, Muhamad Samudi Yasir, Redzuwan Yahaya, Ismail Bahari, Radiological risk assessment of concrete building materials in Peninsular Malaysia
author_facet	Aznan Fazli Ismail, Amran Ab. Majid, Muhamad Samudi Yasir, Redzuwan Yahaya, Ismail Bahari,
author_sort	Aznan Fazli Ismail,
title	Radiological risk assessment of concrete building materials in Peninsular Malaysia
title_short	Radiological risk assessment of concrete building materials in Peninsular Malaysia
title_full	Radiological risk assessment of concrete building materials in Peninsular Malaysia
title_fullStr	Radiological risk assessment of concrete building materials in Peninsular Malaysia
title_full_unstemmed	Radiological risk assessment of concrete building materials in Peninsular Malaysia
title_sort	radiological risk assessment of concrete building materials in peninsular malaysia
publisher	Universiti Kebangsaan Malaysia
publishDate	2010
url	http://journalarticle.ukm.my/7379/ http://journalarticle.ukm.my/7379/ http://journalarticle.ukm.my/7379/1/01_Md_Yeaminhossain.pdf
first_indexed	2023-09-18T19:49:32Z
last_indexed	2023-09-18T19:49:32Z
_version_	1777406126825930752

Radiological risk assessment of concrete building materials in Peninsular Malaysia

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