Research topic

Nuclear and radioactivity studies

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Research papers

2022 · IOP Conference Series Materials Science and Engineering · 10,378 citations

IOP Conference Series: Materials Science and Engineering

International Nuclear Science, Technology and Engineering Conference 2021 (iNuSTEC2021) “Nuclear Science and Technology for Socio-economic Development” Universiti Teknologi Malaysia (UTM) Skudai, Johor, Malaysia 10-12 October 2021 Editors Nahrul Khair Alang Md Rashid, Universiti Teknologi Malaysia Khaidzir Hamzah, Universiti Teknologi Malaysia Mohsin Mohd Sies, Universiti Teknologi Malaysia Jasman Zainal, Universiti Teknologi Malaysia Muhammad Arif Sazali, Universiti Teknologi Malaysia Muhammad Syahir Sarkawi, Universiti Teknologi Malaysia Nur Syazwani Mohd Ali, Universiti Teknologi Malaysia Khairulnadzmi Jamaluddin, Universiti Teknologi Malaysia Abdul Aziz Mohamed, Malaysian Nuclear Society Faridah Mohamad Idris, Malaysian Nuclear Agency Julie Andrianny Murshidi, Malaysian Nuclear Agency Faizal K P Kunchi Mohamed, Universiti Kebangsaan Malaysia Hassan Mohamed, Universiti Tenaga Nasional Abu Hassan Husin, Universiti Teknologi MARA All papers have been peer-reviewed List of Supporting/Sponsoring Organisations, Preface, Contents, iNuSTEC2021 Organising Committee, Inustec 2021 Awards And Recognition, Acknowledgement and Images are available in this pdf

2020 · Science and Technology of Nuclear Installations · 11 citations

Radiological Safety Analysis for a Hypothetical Accident of a Generic VVER-1000 Nuclear Power Plant

Atmospheric dispersion modelling and radiological safety analysis have been performed for a postulated accident scenario of a generic VVER-1000 nuclear power plant using the HotSpot Health Physics code. The total effective dose equivalent (TEDE), the respiratory time-integrated air concentration, and the ground deposition concentration are calculated considering site-specific meteorological conditions. The results show that the maximum TEDE and ground deposition concentration values of 3.69 E – 01 Sv and 3.80 E + 06 kBq/m 2 occurred at downwind distance of 0.18 km from the release point. This maximum TEDE value is recorded within a distance where public occupation is restricted. The TEDE values at distances of 5.0 km and beyond where public occupation is likely to be found are far below the annual regulatory limits of 1 mSv from public exposure in a year even in the event of worse accident scenario as set in IAEA Safety Standard No. GSR Part 3; no action related specifically to the public exposure is required. The released radionuclides might be transported to long distances but will not have any harmful effect on the public. The direction of the radionuclide emission from the release point is towards the north east. It is observed that the organ with the highest value of committed effective dose equivalent (CEDE) appears to be the thyroid. It was followed by the bone surface, lung, red marrow, and lower large intestine wall in order of decreasing CEDE value. Radionuclides including I-131, I-133, Sr-89, Cs-134, Ba-140, Xe-133, and Xe-135 were found to be the main contributors to the CEDE.