Enhanced Seismic Protection System for an Emergency Diesel Generator Unit
Nuclear power plants are required to maintain operation after an earthquake, leading to a safe shutdown if necessary. In the case of a loss of offsite power, the onsite emergency diesel generator is critical to ensure procedural operations of the nuclear power plant. As a means to reduce the overall...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-02-01
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| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/15/5/1728 |
| _version_ | 1797475207409041408 |
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| author | Ricardo Bustamante Gilberto Mosqueda Minkyu Kim |
| author_facet | Ricardo Bustamante Gilberto Mosqueda Minkyu Kim |
| author_sort | Ricardo Bustamante |
| collection | DOAJ |
| description | Nuclear power plants are required to maintain operation after an earthquake, leading to a safe shutdown if necessary. In the case of a loss of offsite power, the onsite emergency diesel generator is critical to ensure procedural operations of the nuclear power plant. As a means to reduce the overall seismic risk, a three-dimensional seismic protection system is proposed to enhance the seismic performance of the emergency diesel generator. The proposed seismic isolation system decouples the horizontal and vertical components of shaking and considers available hardware to achieve an effective isolation solution over the range of excitation frequencies considered. Numerical analysis of the proposed system demonstrates a reduction in seismic demands on the emergency diesel generator and provides a higher safety margin than conventional base installation procedures. Umbilical lines that cross the isolation plane are considered and impose additional constraints on the displacement capacity of the isolation system. However, increasing the displacement capacity of these components can significantly increase the safety margin against failure. The seismic protection system can be customized depending on the seismic hazard and application to different seismic regions. |
| first_indexed | 2024-03-09T20:41:54Z |
| format | Article |
| id | doaj.art-792943b0b59c42febd533011e95ccefd |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-09T20:41:54Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-792943b0b59c42febd533011e95ccefd2023-11-23T22:56:38ZengMDPI AGEnergies1996-10732022-02-01155172810.3390/en15051728Enhanced Seismic Protection System for an Emergency Diesel Generator UnitRicardo Bustamante0Gilberto Mosqueda1Minkyu Kim2Department of Structural Engineering, University of California San Diego, La Jolla, CA 92093, USADepartment of Structural Engineering, University of California San Diego, La Jolla, CA 92093, USAKorea Atomic Energy Research Institute, Daedeok-Daero 989-111, Yusung-gu, Daejon 305-353, KoreaNuclear power plants are required to maintain operation after an earthquake, leading to a safe shutdown if necessary. In the case of a loss of offsite power, the onsite emergency diesel generator is critical to ensure procedural operations of the nuclear power plant. As a means to reduce the overall seismic risk, a three-dimensional seismic protection system is proposed to enhance the seismic performance of the emergency diesel generator. The proposed seismic isolation system decouples the horizontal and vertical components of shaking and considers available hardware to achieve an effective isolation solution over the range of excitation frequencies considered. Numerical analysis of the proposed system demonstrates a reduction in seismic demands on the emergency diesel generator and provides a higher safety margin than conventional base installation procedures. Umbilical lines that cross the isolation plane are considered and impose additional constraints on the displacement capacity of the isolation system. However, increasing the displacement capacity of these components can significantly increase the safety margin against failure. The seismic protection system can be customized depending on the seismic hazard and application to different seismic regions.https://www.mdpi.com/1996-1073/15/5/1728base isolation3D seismic protectionnuclear power plantemergency diesel generatorlimit statesSPRA |
| spellingShingle | Ricardo Bustamante Gilberto Mosqueda Minkyu Kim Enhanced Seismic Protection System for an Emergency Diesel Generator Unit Energies base isolation 3D seismic protection nuclear power plant emergency diesel generator limit states SPRA |
| title | Enhanced Seismic Protection System for an Emergency Diesel Generator Unit |
| title_full | Enhanced Seismic Protection System for an Emergency Diesel Generator Unit |
| title_fullStr | Enhanced Seismic Protection System for an Emergency Diesel Generator Unit |
| title_full_unstemmed | Enhanced Seismic Protection System for an Emergency Diesel Generator Unit |
| title_short | Enhanced Seismic Protection System for an Emergency Diesel Generator Unit |
| title_sort | enhanced seismic protection system for an emergency diesel generator unit |
| topic | base isolation 3D seismic protection nuclear power plant emergency diesel generator limit states SPRA |
| url | https://www.mdpi.com/1996-1073/15/5/1728 |
| work_keys_str_mv | AT ricardobustamante enhancedseismicprotectionsystemforanemergencydieselgeneratorunit AT gilbertomosqueda enhancedseismicprotectionsystemforanemergencydieselgeneratorunit AT minkyukim enhancedseismicprotectionsystemforanemergencydieselgeneratorunit |