Estimation of 41 Ar activity concentration and release rate from the TRIGA Mark-II research reactor

Hoq, M. Ajijul; Soner, Md. Abdul Malek; Rahman, Anisur; Salam, Md. Abdus; Islam, Salequl

doi:10.1016/j.jenvrad.2015.12.005

Cited by 11 publications

(3 citation statements)

References 3 publications

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“…This study focused on the 3 MW TRIGA Mark II research reactor located in Savar, Dhaka. The facility uses a uranium-zirconium hybrid fuel moderated and light water-cooled system, which is used primarily for training and research in various fields, such as Neutron Activation Analysis (NAA), Neutron Radiography (NRG), Neutron Scattering (NS), and production of radioisotopes ( 131 I, 99 mTc, 46 Sc) for medical applications [19][20][21][22]. The meteorological observations at the site show that wind predominantly flows from the south (S) direction is dominant (Figure 2).…”

Section: Materials and Methods 1) Site Description And Meteorological...mentioning

confidence: 99%

Numerical Dose Assessment and Short-term Radioactivity Impact on Foodstuff for Continuous Release from of TRIGA Mark II Research Reactor

Dahia,

Dadda,

Lyria Cheridi Deghal

et al. 2024

App. Envi. Res.

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This work is a contribution to the assessment of the radiological consequences of radioactivity and radiation dose for TRIGA Mark II research reactor during continuous operation. The potential release to the atmosphere of 131I, 137Cs, and 90Sr are computed in the South direction is calculated using CROM software. We have attempted to evaluate the daily concentration of radioactivity and its impact on foodstuff. The annual average dose received from internal and external irradiation by age group through the different pathways were also considered. The simulation results showed that the highest air concentration was found at 225 m distance from the source and the calculated doses were found to be significantly very low. The contribution of Iodine 131I is significantly higher in fruit vegetables, while the 137Cs and 90Sr are dominant in animal products. Furthermore, inhalation and ingestion of contaminated food were found to be the most likely routes of entry into the human body.

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Section: Materials and Methods 1) Site Description And Meteorological...mentioning

confidence: 99%

Numerical Dose Assessment and Short-term Radioactivity Impact on Foodstuff for Continuous Release from of TRIGA Mark II Research Reactor

Dahia,

Dadda,

Lyria Cheridi Deghal

et al. 2024

App. Envi. Res.

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“…The experience over the last decades showed that for facilities, e.g. nuclear power plants, research reactors and research facilities with accelerator tunnels, there is a permanent activity emission during normal operation that mainly contains airborne radionuclides [17][18][19][20][21][22][23][24]. For most of these facilities 41 Ar is one of the major contributors to the radiation release.…”

Section: Contextmentioning

confidence: 99%

Neutron activation and prompt gamma intensity in Ar/CO 2 -filled neutron detectors at the European Spallation Source

Dian

Kanaki

Hall-Wilton

et al. 2017

Applied Radiation and Isotopes

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Monte Carlo simulations using MCNP6.1 were performed to study the effect of neutron activation in Ar/CO neutron detector counting gas. A general MCNP model was built and validated with simple analytical calculations. Simulations and calculations agree that only the Ar activation can have a considerable effect. It was shown that neither the prompt gamma intensity from theAr neutron capture nor the produced Ar activity have an impact in terms of gamma dose rate around the detector and background level.

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“…Since then the reactor has been operated at different power levels for various research and development activities, manpower training, and production of radioisotopes [1]. Bangladesh Atomic Energy Regulatory Authority (BAERA)"s regulations necessitate that the nuclear installations embark on all proper safety measures to protect the surrounding environment as well as the health and safety of the public and to identify, control, and monitor radioactive release to the local environment [2]. A nuclear reactor may cause an uncontrolled release of radioactivity to the environment and thus  Corresponding author.…”

Section: Introduction mentioning

confidence: 99%

Dose Distribution of Radioxenon Due to a Hypothetical Accident of TRIGA Research Reactor in Bangladesh

et al. 2022

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Radiological dose distribution owing to the deposition of 131m Xe, 133m Xe, 133 Xe, 135m Xe, 135 Xe, and 138 Xe on ground and immersion considering a postulated accident of TRIGA Mark-II research reactor has been assessed. The radiological dose distribution has been carried out in various directions with the help of Gaussian Diffusion Model. Local meteorological data such as average wind speed, frequency, etc. has been collected and evaluated for various directions around the reactor site. For all the dominant directions, the maximum dose values due to 131m Xe, 133m Xe, 133 Xe, 135m Xe, 135 Xe, 138 Xe and the total ( 131m Xe + 133m Xe + 133 Xe + 135m Xe + 135 Xe + 138 Xe) were observed within the limit 3.03E-7-1.23E-4 µSv/h, 1.01E-5-4.09E-3 µSv/h, 0.0003-0.14 µSv/h, 2.29E-5-9.26E-3 µSv/h, 0.002 -1.111 µSv/h, 1.11E-5-4.55E-3 µSv/h, and 0.003-1.269 µSv/h, respectively. Dose distribution was found to be dominant due to immersion and the contribution was 87.55 %. There is shortage of data regarding the release of radioxenon in the atmosphere during nuclear accident especially in the case of TRIGA type research reactor. This paper is the first such detailed study on atmospheric release of radioxenon and its dose distribution for a full power-reactor and the consequences towards the environment and public health. The result can be applied to develop the radiological protective measures and to prepare an emergency response plan for the TRIGA reactor site.

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Estimation of 41 Ar activity concentration and release rate from the TRIGA Mark-II research reactor

Cited by 11 publications

References 3 publications

Numerical Dose Assessment and Short-term Radioactivity Impact on Foodstuff for Continuous Release from of TRIGA Mark II Research Reactor

Numerical Dose Assessment and Short-term Radioactivity Impact on Foodstuff for Continuous Release from of TRIGA Mark II Research Reactor

Neutron activation and prompt gamma intensity in Ar/CO 2 -filled neutron detectors at the European Spallation Source

Dose Distribution of Radioxenon Due to a Hypothetical Accident of TRIGA Research Reactor in Bangladesh

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