Research on seismic technologyof nuclear power plants
Başlık çevirisi mevcut değil.
- Tez No: 707789
- Danışmanlar: DOÇ. DR. SHİ Lİ, PROF. DR. XİE YONGCHENG
- Tez Türü: Yüksek Lisans
- Konular: Enerji, Nükleer Mühendislik, Energy, Nuclear Engineering
- Anahtar Kelimeler: Belirtilmemiş.
- Yıl: 2020
- Dil: İngilizce
- Üniversite: Tsinghua University
- Enstitü: Yurtdışı Enstitü
- Ana Bilim Dalı: Belirtilmemiş.
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: 52
Özet
Özet yok.
Özet (Çeviri)
Generating electricity by nuclear power plants first ever took place in world history in 1948 at X-10 Graphite Reactor in Oak Ridge, Tennessee in the United States. Since then Nuclear Industry thrived dramatically year by year. After the several decades of sharply improvement so finally engineering and technological utilities are reached the advance level. With the development of generation-3 and generation-4 Nuclear Power Plant (NPP) technologies most of the countries are demanding to build NPPs in their homelands to meet their energy demands with the reliable energy resources. Safety evaluation procedures are essential for NPPs. In order to avoid the release of possible radiation materials to the atmosphere, several safety standards were developed. The design and construction of NPPs have to follow up those procedures strictly. Since the time when modern world first met nuclear power plants some severe nuclear accidents happened as well. Therefore some controversies were also started about whether nuclear is safe or not. In this regard, all the technological improvements and engineering enhancements prevent those risks as long as the safety procedures are followed and applied smoothly . When we look into those accidents all of them occurred because of either personal mistakes or constructional design flaws. Currently, every single possible risks are already calculated and estimated . Even though there is no human mistakes earthquake is other possibility that cannot be predicted. In such circumstances, several methodology and procedures are also developed to prevent damages of the earthquake. Seismic Qualification Method is one of them and aiming to strengthen equipment durability in during/after earthquake. In this method, it is aimed to make equipment to meet their performance requirements. Basic purpose of this standard is to simulate and analyse/test equipment's strengths and durability during/after the possible earthquake. Seismic isolation is a widely adopted method for the design of component or building in mechanical or civil engineering. Although its application in nuclear power plant is limited, the method itself can greatly reduce the risk due to earthquake. Different seismic isolation tools are investigated in the present paper. The limitations Abstract III and difficulties of applications of these tools are discussed. Finite Element Method (FEM), which is an important tool for the structural design, analysis and evaluation, is also discussed in the paper. An example of the analysis of a supporting structure using commercial FE software ANSYS is provided. The results are discussed and the factors which will affect the accuracy of the FEA are investigated, especially the quality of the mesh. Finally, the seismic reliability of NPP in Turkey is introduced and discussed. The seismotectonic map of Turkey is provided and investigated. Based on the seismotectonic map, the Seismic Qualification Method in Turkey is discussed, including the definition of the Design Ground Movement Level and safety classification of the components. Moreover, the factors that need to be considered during the design and analysis for mechanical components and buildings were studied
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