Source Term Atmospheric Release and Core Inventory Analysis for the PUSPATI TRIGA Reactor under Severe Accident Conditions

Sulaiman, Siti Nur Ain; Mohamed, Faizal K.P. Kunchi; Rahim, Ahmad Nabil Ab; Kassim, Mohammad Suhaimi; Hamzah, N. S.

doi:10.17576/jsm-2019-4810-24

Cited by 5 publications

(2 citation statements)

References 15 publications

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“…Rahman et al 2003 [24] studied the dose distribution in various environmental media due to deposition of 131 I and 137 Cs in soil at the AERE campus. Sulaiman et al 2019 [25] determined the core inventory for PUSPATI TRIGA Reactor (RTP) under a hypothetical severe accident by assuming the reactor to be operated continuously for 365 days at full power (1 MW). But no dose distribution was studied.…”

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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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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“…The investigations elsewhere employed the ORIGEN2 [11,12] and PHITS [13,14] computer code in the various nuclear field. Both software is known to be reliable [15][16][17].…”

Section: Introduction *mentioning

confidence: 99%

The Radioactivity Estimation of the Irradiated 13 Mev Cyclotron’s Concrete Shield

2020

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The Center for Accelerator Science and Technology (PSTA) planned to install K500 concrete shield in its 13 MeV cyclotron facility (DECY-13). However, fast neutrons that are generated by this cyclotron could activate materials of the concrete. It may harm the radiation workers. In this work, we conducted simulations using ORIGEN2 and PHITS computer code to estimate the formed radioactivity and the neutron flux distribution in the DECY-13 cyclotron's concrete shield. Based on the simulation, the induced radioactivity is 2.3478 × 109 Bq, while its gamma dose rate is 22.09 µSv/m2h. The most contributed isotopes are Th-233, Ho-166, Al-28, Mn-56 and Si-31. This dose is quite high. Neutron fluxes in the rear of the simulated concrete shield are also still prominent. Accordingly, it is necessary to attach neutron shielding materials which do not generate high-intensity gamma-ray. The formed radioactivity is high; but it appears from the short half-life isotopes such as Th-233, Ho-166, Al-28, Mn-56 and Si-31. Its activity will diminish quickly after the cyclotron is off. Hence, it will be safe for radiation workers.Keywords: Radioactivity, Concrete Shield, 13 MeV Cyclotron, Neutron Irradiation, DECY-13, PHITS

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Assessment of radiological dose and emergency planning zones of TRIGA Mark-II research reactor of Bangladesh due to a postulated severe accidental condition

Khaer,

Hoq,

Hassan

et al. 2023

Nuclear Engineering and Design

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Source Term Atmospheric Release and Core Inventory Analysis for the PUSPATI TRIGA Reactor under Severe Accident Conditions

Cited by 5 publications

References 15 publications

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

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

The Radioactivity Estimation of the Irradiated 13 Mev Cyclotron’s Concrete Shield

Assessment of radiological dose and emergency planning zones of TRIGA Mark-II research reactor of Bangladesh due to a postulated severe accidental condition

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