Evaluation on radiation protection aspect and radiological risk at Mukim Belanja repository

Siti Nur Aisyah Azmi, Hamiza Kenoh, Amran Ab. Majid

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

Abstract

Asian Rare Earth (ARE) is a locally incorporated company that operated a mineral processing operation to extract rare earth element. ARE has received much attention from the public since the beginning of their operation until the work of decommissioning and decontamination of the plant. Due to the existence of Naturally Occurring Radioactive Material (NORM) in the residue, the decommissioning and disposal was done by the company in collaboration with the Perak State Government and the Atomic Energy Licensing Board (AELB). The main objective of this study is to review the level of compliance of the existing Radiation Protection Regulations enforced by AELB particularly in the achievement of allowed exposure dose limit. The next objective was to study the impact of the construction of the Mukim Belanja Repository to workers and public. This study was conducted by analyzing documents that were issued and conducting the area monitoring using a Geiger Muller detector (GM) and Sodium Iodide (NaI(Tl)) survey meters. The measurements were made at 5 cm and 1 m from the ground surface at 27 measurement stations. The external doses measured were within the background levels of the surrounding area. The annual effective dose using the highest reading at 5 cm and 1 m from ground surface by GM detector was calculated to be 1.36 mSv/year and 1.21 mSv/year respectively. Whereas the annual effective dose using the highest reading at 5 cm and 1 m from ground surface by using NaI(Tl) detector was calculated to be 3.31 mSv/year and 2.83 mSv/year respectively. The calculated cancer risks from the study showed that the risk is small compared with the risks derived from natural radiation based on global annual radiation dose to humans. This study therefore indicated that the repository is able to constrain the dose exposure from the disposed NORM waste. The study also revealed that the construction of the repository has complied with all the rules and regulations subjected to it. The exposed dose received by the radiation and the public workers during the construction of the repository were below the annual limit i.e. 20 mSv/year and 1mSv/year respectively.

Original languageEnglish
Title of host publicationAdvancing Nuclear Science and Engineering for Sustainable Nuclear Energy Infrastructure: Proceeding of the International Nuclear Science, Technology and Engineering Conference 2015, iNuSTEC 2015
PublisherAmerican Institute of Physics Inc.
Volume1704
ISBN (Electronic)9780735413511
DOIs
Publication statusPublished - 22 Jan 2016
Event6th International Nuclear Science, Technology and Engineering Conference 2015, iNuSTEC 2015 - Nilai, Negeri Sembilan, Malaysia
Duration: 17 Aug 201519 Aug 2015

Other

Other6th International Nuclear Science, Technology and Engineering Conference 2015, iNuSTEC 2015
CountryMalaysia
CityNilai, Negeri Sembilan
Period17/8/1519/8/15

Fingerprint

radiation protection
dosage
evaluation
decommissioning
licensing
radioactive materials
rare earth elements
detectors
nuclear energy
radiation
sodium iodides
decontamination
disposal
stations
cancer
minerals
conduction

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Azmi, S. N. A., Kenoh, H., & Ab. Majid, A. (2016). Evaluation on radiation protection aspect and radiological risk at Mukim Belanja repository. In Advancing Nuclear Science and Engineering for Sustainable Nuclear Energy Infrastructure: Proceeding of the International Nuclear Science, Technology and Engineering Conference 2015, iNuSTEC 2015 (Vol. 1704). [050014] American Institute of Physics Inc.. https://doi.org/10.1063/1.4940110

Evaluation on radiation protection aspect and radiological risk at Mukim Belanja repository. / Azmi, Siti Nur Aisyah; Kenoh, Hamiza; Ab. Majid, Amran.

Advancing Nuclear Science and Engineering for Sustainable Nuclear Energy Infrastructure: Proceeding of the International Nuclear Science, Technology and Engineering Conference 2015, iNuSTEC 2015. Vol. 1704 American Institute of Physics Inc., 2016. 050014.

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

Azmi, SNA, Kenoh, H & Ab. Majid, A 2016, Evaluation on radiation protection aspect and radiological risk at Mukim Belanja repository. in Advancing Nuclear Science and Engineering for Sustainable Nuclear Energy Infrastructure: Proceeding of the International Nuclear Science, Technology and Engineering Conference 2015, iNuSTEC 2015. vol. 1704, 050014, American Institute of Physics Inc., 6th International Nuclear Science, Technology and Engineering Conference 2015, iNuSTEC 2015, Nilai, Negeri Sembilan, Malaysia, 17/8/15. https://doi.org/10.1063/1.4940110
Azmi SNA, Kenoh H, Ab. Majid A. Evaluation on radiation protection aspect and radiological risk at Mukim Belanja repository. In Advancing Nuclear Science and Engineering for Sustainable Nuclear Energy Infrastructure: Proceeding of the International Nuclear Science, Technology and Engineering Conference 2015, iNuSTEC 2015. Vol. 1704. American Institute of Physics Inc. 2016. 050014 https://doi.org/10.1063/1.4940110
Azmi, Siti Nur Aisyah ; Kenoh, Hamiza ; Ab. Majid, Amran. / Evaluation on radiation protection aspect and radiological risk at Mukim Belanja repository. Advancing Nuclear Science and Engineering for Sustainable Nuclear Energy Infrastructure: Proceeding of the International Nuclear Science, Technology and Engineering Conference 2015, iNuSTEC 2015. Vol. 1704 American Institute of Physics Inc., 2016.
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