Safety assessment for the ultimate heat sink (UHS) system with non-injection concept in nuclear power plants (NPPs)
| Autor: | Yun Il Kim, Tae Ho Woo |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Nuclear and High Energy Physics
Piping business.industry 020209 energy Nuclear engineering Nonlinear algorithms 02 engineering and technology Heat sink Nuclear power System dynamics Coolant Nuclear Energy and Engineering Nuclear reactor core 0202 electrical engineering electronic engineering information engineering Water cooling Environmental science business |
| Zdroj: | Journal of Nuclear Science and Technology. 54:39-46 |
| ISSN: | 1881-1248 0022-3131 |
| DOI: | 10.1080/00223131.2016.1204255 |
| Popis: | Following the Fukushima accident, it is proposed to find a better safety system, which has a pool-type cooling system without coolant injections. Since the conventional piping-based injection systems have failed in treating the three major severe accidents, the artificial pool could be constructed to cover the failed reactor core systems in which the pool-like structure is constructed. Regarding this study, there were some previous studies about the ultimate heat sink (UHS). In this study, the system dynamics (SD) modeling is performed in the case of Fukushima Unit 1 accident. The basic events are obtained by the Boolean values as 0 and 1. The quantifications are obtained by the SD algorithm incorporated with the Vensim software. In the simulations work, there is a plateau region between the 25th and 45th years in the interested period. The nonlinear algorithm is applied for the UHS analysis which was not installed for the commercial use yet. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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