Simulation of a severe accident at a typical PWR due to break of a hot leg ECCS injection line using MELCOR code
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| Natura: | Artículo científico |
| Lingua: | en |
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Sociedade Brasileira de Proteção Radiológica - SBPR
2019
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| _version_ | 1876476604811575296 |
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| author | S. M. Lee |
| author_facet | S. M. Lee |
| contents | Simulation of a severe accident at a typical PWR due to break of a hot leg ECCS injection line using MELCOR code S. M. Lee N.S. Lapa G. Sabundjian Biología ECCS SAMG MELCOR SBLOCA Severe Accident This work aims to simulate a severe accident at a typical PWR of 1300 megawatts using the MELCOR code. The accident is assumed to be caused by a break in Emergency Core Cooling System line of a hot leg. The model for this typical PWR was elaborated by the Global Research for Safety which provided it to the CNEN for independent analysis of the severe accidents at Angra 2, which is similar to this typical PWR. Although both of them are not identical, the results obtained of that typical PWR may be valuable because of the lack of officially published simulation of severe accident at Angra 2. Relevant parameters such as pressure, temperature and water level in various control volumes, after the break at the hot leg, were calculated as well as degree of core degradation and hydrogen production within the containment during the accident. The simulation was able to reproduce the physical phenomena which were in general very reasonable, and most of the events occurred within acceptable time intervals. In addition, this scenario could be used as a basis for the study of the effectiveness of some preventive or/and mitigating measures of Severe Accident Management by adding each measure in the model. The uncertainty analysis was not carried out in this work. 2019 artículo científico 2319-0612 https://www.redalyc.org/articulo.oa?id=722280898019 en http://www.redalyc.org/revista.oa?id=7222 Brazilian Journal of Radiation Sciences application/pdf Sociedade Brasileira de Proteção Radiológica - SBPR Brazilian Journal of Radiation Sciences (Brasil) Num.2B Vol.7 |
| format | Artículo científico |
| id | redalyc_722280898019 |
| institution | Redalyc |
| language | en |
| publishDate | 2019 |
| publisher | Sociedade Brasileira de Proteção Radiológica - SBPR |
| spellingShingle | Simulation of a severe accident at a typical PWR due to break of a hot leg ECCS injection line using MELCOR code S. M. Lee Biología ECCS SAMG MELCOR SBLOCA Severe Accident Simulation of a severe accident at a typical PWR due to break of a hot leg ECCS injection line using MELCOR code S. M. Lee N.S. Lapa G. Sabundjian Biología ECCS SAMG MELCOR SBLOCA Severe Accident This work aims to simulate a severe accident at a typical PWR of 1300 megawatts using the MELCOR code. The accident is assumed to be caused by a break in Emergency Core Cooling System line of a hot leg. The model for this typical PWR was elaborated by the Global Research for Safety which provided it to the CNEN for independent analysis of the severe accidents at Angra 2, which is similar to this typical PWR. Although both of them are not identical, the results obtained of that typical PWR may be valuable because of the lack of officially published simulation of severe accident at Angra 2. Relevant parameters such as pressure, temperature and water level in various control volumes, after the break at the hot leg, were calculated as well as degree of core degradation and hydrogen production within the containment during the accident. The simulation was able to reproduce the physical phenomena which were in general very reasonable, and most of the events occurred within acceptable time intervals. In addition, this scenario could be used as a basis for the study of the effectiveness of some preventive or/and mitigating measures of Severe Accident Management by adding each measure in the model. The uncertainty analysis was not carried out in this work. 2019 artículo científico 2319-0612 https://www.redalyc.org/articulo.oa?id=722280898019 en http://www.redalyc.org/revista.oa?id=7222 Brazilian Journal of Radiation Sciences application/pdf Sociedade Brasileira de Proteção Radiológica - SBPR Brazilian Journal of Radiation Sciences (Brasil) Num.2B Vol.7 |
| title | Simulation of a severe accident at a typical PWR due to break of a hot leg ECCS injection line using MELCOR code |
| topic | Biología ECCS SAMG MELCOR SBLOCA Severe Accident |
| url | https://www.redalyc.org/articulo.oa?id=722280898019 |