Seismic Performance Analysis of Emergency Diesel Engine Retarder in Nuclear Power Plant

The finite element analysis is used to study the seismic performance of the emergency diesel worm gear retarder in nuclear power plant. By modal analysis of the structure, it is concluded that the first natural frequency is higher than 33 Hz. Then the seismic analysis is performed both on the horizo...

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Bibliographic Details
Published in:Journal of physics. Conference series 2019-10, Vol.1314 (1), p.12087
Main Authors: Yi-bo, FAN, Jian-guang, LI, Xuan-yu, SHENG, Lan-wen, WANG
Format: Article
Language:English
Subjects:
Diesel engines
Finite element method
Modal analysis
Nuclear power plants
Nuclear safety
Physics
Resonant frequencies
Safety equipment
Seismic analysis
Seismic response
Worm gears
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Summary:The finite element analysis is used to study the seismic performance of the emergency diesel worm gear retarder in nuclear power plant. By modal analysis of the structure, it is concluded that the first natural frequency is higher than 33 Hz. Then the seismic analysis is performed both on the horizontal and vertical conditions. The analysis results show that under the equivalent earthquake acceleration 4.5g, the stress is low for the retarder case and other components of the worm retarder, and fulfills the material strength requirement. It can be considered that the structure of the retarder is stable and has excellent anti-seismic performance, meeting the seismic requirement for class 3 nuclear safety equipment.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1314/1/012087