Neutron Fluence And DPA Rate Analysis In Pebble-Bed HTR Reactor Vessel Using MCNP

Hamzah, Amir; Suwoto, Suwoto; Rohanda, Anis; Adrial, Hery; Bakhri, Syaiful; Sunaryo, Geni Rina

doi:10.1088/1742-6596/962/1/012044

Cited by 7 publications

(2 citation statements)

References 15 publications

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“…This structure is a spectrum of 80 thermal, 47 epithermal, and 45 fast neutron energies ranging from 1.10 × 10 1a. Data of neutron flux obtained from the MCNP tally were normalized to the SAFARI-1 reactor power using Equation 1 [10,11].…”

Section: Calculation Of Energy-dependent Fluxmentioning

confidence: 99%

Evaluation of neutron radiation damage on gold microstructure using MCNP

Temaugee,

Bedhesi,

Mavunda

et al. 2023

J. Phys.: Conf. Ser.

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The effects of radiation interaction with materials have been studied over the years on metals, semiconductors, and other alloys. The result of these interactions constitutes microstructural effects, like point defects, dislocation loops, and void swellings. The accumulation of these defects results to damage on the macroscopic scale. This study is aimed to predict the magnitude of radiation damage in gold sample due to neutron irradiation. Neutron flux, displacement-per-atom rate, as well as heat deposition, were calculated in MCNP6.2, using the SAFARI-1 reactor model. The total neutron flux and dpa rate in the gold sample were determined to be 2.262 × 1011 n.cm−2.s−1 and 5.209 × 10−7 s−1 respectively. Also, the total heat deposition due to neutrons and photons was 2.515 × 10−6 W.g−1 and 0.513 W.g−1, respectively. Hence, the predicted neutron dpa and flux for the gold sample in this study suggest a heavy damage regime.

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Section: Calculation Of Energy-dependent Fluxmentioning

confidence: 99%

Evaluation of neutron radiation damage on gold microstructure using MCNP

Temaugee,

Bedhesi,

Mavunda

et al. 2023

J. Phys.: Conf. Ser.

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“…Calculation of the dose rate distribution is done using the MCNP program [2]. The Monte-Carlo technique of the MCNP program has been widely used to solve of various nuclear reactor problems, especially in complex geometry modeling [3,5]. The analysis of the dose rate distribution started from the modeling of the core, radiation shielding up to the reactor building according to the composition and geometry of each component.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Radiation Dose Rate of RSG-Gas Reactor

Hamzah

Adrial

Subiharto

2018

urania

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EVALUATION OF RADIATION DOSE RATE OF RSG-GAS REACTOR. The RSG-GAS reactor has been operated for 30 years. Since the nuclear reactor has been operated for a long time, aging process on its components may occur. One important parameter for maintaining the safety level of the RSG-GAS reactor is to maintain radiation exposure as low as possible, especially in the working area. The evaluation results should be able to demonstrate that the radiation exposure of the RSG-GAS is still safe for workers, communities and the surrounding environments. The purpose of this study is to evaluate radiation exposure in the working area to ensure that the operation of RSG-GAS is still safe for the next 10 years. The scope of this work is confirming the calculation results with the measured radiation dose in the RSG-GAS reactor working area. Measurement of radiation exposure is done by using the installed equipments at some points in the RSG-GAS working area and a portable radiation exposure measurement equipment. The calculations include performance of a modeling and analysis of dose rate distribution based on the composition and geometry data of RSG-GAS by using MCNP. The analysis results show that the maximum dose rate at Level 0 m working area of RSG-GAS reactor is 3.0 mSv/h with a deviation of 6%, which is relatively close to the measurement value. The evaluation results show that the dose rate in RSG-GAS working area is below the limit value established by the Nuclear Energy Regulatory Agency of Indonesia (BAPETEN) of 10 mSv/h (for the average effective dose of 20 mSv/year). Therefore, it is concluded that the dose rate in RSG-GAS working area is safe for personnel..Kata kunci: dose rates, RSG-GAS, radiation safety, MCNP.

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