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Study of Radiation dose Rates around Open Pool Type Reactor Building due to LOCA |
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PP: 159-163 |
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doi:10.18576/jrna/080209
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Author(s) |
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Amr Abdelhady,
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Abstract |
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| Loss of coolant accident (LOCA) is one of the anticipated accidents that may occur in the open pool type reactor. LOCA results in decreasing the water level above the reactor core and consequently may cause an increase in the radiation dose rate level. Determining the radiation dose rate levels around the reactor building due to the LOCA is the objective of this study. KENO-VI code was used to model the reactor building structure. ORIGEN-S code was used to evaluate the neutron and the photon spectrums and their intensities after the reactor shutdown assuming the maximum burnup of the discharge for conservative calculation.
MAVRIC code was used to calculate the dose rate distributions around the reactor during LOCA. Then, the distances from the reactor which correspond to the permissible dose rate limit were determined along the water level drop. The study focused on determining the water level above the reactor core, 144 cm, that achieves a dose rate lower than or equal to the permissible limit for any position around the reactor building.
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