Zero burn-up core capability can eliminate possible super prompt critical accident and make possi... more Zero burn-up core capability can eliminate possible super prompt critical accident and make possible of inherent safety feature based on reactivity feedback mechanism. In this concept the maximum excess reactivity is limited below 1 $ of reactivity so that possibility of super prompt accident such as in Chernobyl accident case can be eleminated. This is however need high quality of system analysis, and in this study the effect of fission yield calculation method on the nuclear fuel cell homogenization process is investigated and discussed. This study use SRAC code system to investigate the efect of reactor dependent fission yield distribution calculation. Calculation restults show that this process will has important improvement effect for long life high burnup core.
Knowledge of cloud vertical structure, including the presence of multiple cloud layers, is import... more Knowledge of cloud vertical structure, including the presence of multiple cloud layers, is important for several climate-related applications such as for understanding the impact of clouds on Earth’s radiation budget. Moreover, the vertical distribution of latent heat release that affects global circulation and precipitation. The characteristics of cloud vertical structure may change as a consequence of climate change. However, study on cloud vertical structure in Indonesia is limited to case study based on short period observation. This study aims to analyse the vertical structure of clouds, such as cloud base height (CBH), the height of the cloud top (CT) and the number of cloud layers due to climate change in Indonesia, based on ∼ 30 years radiosonde observation. The relation between cloud vertical structures and precipitation was investigated. We used the radiosonde data from nine observation stations in Indonesia. On an average, it is observed that over Indonesia one-layer clou...
A conceptual design study of Gas Cooled Fast Reactors with Modified CANDLE Burn‐up has been perfo... more A conceptual design study of Gas Cooled Fast Reactors with Modified CANDLE Burn‐up has been performed. The objective of this research is to get optimal design parameters of such type reactors. The parameters of nuclear design including the critical condition, conversion ...
The research about fast transient and spatially non‐homogenous nuclear reactor accident analysis ... more The research about fast transient and spatially non‐homogenous nuclear reactor accident analysis of two‐dimensional nuclear reactor has been done. This research is about prediction of reactor behavior is during accident. In the present study, space‐time diffusion equation is solved ...
Nuclear reactor design and analysis of next‐generation reactors require a comprehensive computing... more Nuclear reactor design and analysis of next‐generation reactors require a comprehensive computing which is better to be executed in a high performance computing. Flat flux (FF) approach is a common approach in solving an integral transport equation with collision probability (CP) method. ...
Zero burn-up core capability can eliminate possible super prompt critical accident and make possi... more Zero burn-up core capability can eliminate possible super prompt critical accident and make possible of inherent safety feature based on reactivity feedback mechanism. In this concept the maximum excess reactivity is limited below 1 $ of reactivity so that possibility of super prompt accident such as in Chernobyl accident case can be eleminated. This is however need high quality of system analysis, and in this study the effect of fission yield calculation method on the nuclear fuel cell homogenization process is investigated and discussed. This study use SRAC code system to investigate the efect of reactor dependent fission yield distribution calculation. Calculation restults show that this process will has important improvement effect for long life high burnup core.
Knowledge of cloud vertical structure, including the presence of multiple cloud layers, is import... more Knowledge of cloud vertical structure, including the presence of multiple cloud layers, is important for several climate-related applications such as for understanding the impact of clouds on Earth’s radiation budget. Moreover, the vertical distribution of latent heat release that affects global circulation and precipitation. The characteristics of cloud vertical structure may change as a consequence of climate change. However, study on cloud vertical structure in Indonesia is limited to case study based on short period observation. This study aims to analyse the vertical structure of clouds, such as cloud base height (CBH), the height of the cloud top (CT) and the number of cloud layers due to climate change in Indonesia, based on ∼ 30 years radiosonde observation. The relation between cloud vertical structures and precipitation was investigated. We used the radiosonde data from nine observation stations in Indonesia. On an average, it is observed that over Indonesia one-layer clou...
A conceptual design study of Gas Cooled Fast Reactors with Modified CANDLE Burn‐up has been perfo... more A conceptual design study of Gas Cooled Fast Reactors with Modified CANDLE Burn‐up has been performed. The objective of this research is to get optimal design parameters of such type reactors. The parameters of nuclear design including the critical condition, conversion ...
The research about fast transient and spatially non‐homogenous nuclear reactor accident analysis ... more The research about fast transient and spatially non‐homogenous nuclear reactor accident analysis of two‐dimensional nuclear reactor has been done. This research is about prediction of reactor behavior is during accident. In the present study, space‐time diffusion equation is solved ...
Nuclear reactor design and analysis of next‐generation reactors require a comprehensive computing... more Nuclear reactor design and analysis of next‐generation reactors require a comprehensive computing which is better to be executed in a high performance computing. Flat flux (FF) approach is a common approach in solving an integral transport equation with collision probability (CP) method. ...
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Papers by M. Ali Shafii