Full Content is available to subscribers

Subscribe/Learn More  >

Stress and Fatigue Analysis of Thermal Shock for Cladding of Center Measurement Column Lower Head in the Fast Reactor Under Shutdown Condition

[+] Author Affiliations
Shu Zheng, Daogang Lu, Qiong Cao, Chao Liu, Yunlong Ding

North China Electric Power University, Beijing, China

Yi Huang

China Institute of Atomic Energy, Beijing, China

Paper No. ICONE26-82596, pp. V06BT08A069; 6 pages
  • 2018 26th International Conference on Nuclear Engineering
  • Volume 6B: Thermal-Hydraulics and Safety Analyses
  • London, England, July 22–26, 2018
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 978-0-7918-5149-4
  • Copyright © 2018 by ASME


The center measurement column lower head, which is under long-term influence of the liquid sodium, locates just above the core outlet in the fast reactor. Under the shutdown condition, the sudden drop of coolant temperature will cause the center measurement column lower head to be affected by the strong thermal shock that will threaten the integrity of the lower head. Cladding is always added to lower head to protect it from thermal shock damage. Therefore, the calculation and analysis of stress and fatigue damage for cladding is significant. Based on the built complete model and shutdown temperature curve of reactor core outlet, using ASME fatigue evaluation method, the stress and fatigue damage of thermal shock in cladding is calculated. And the influence of different layers of cladding on the von Mises equivalent stress distributions is analyzed in the paper. The results show that under a given shutdown curve, the maximum von Mises stress emerges at the joints of cladding and the sleeve. As the number of layers increases, the von Mises equivalent stress of each layer decreases. Due to the existence of thermal resistance, the von Mises equivalent stress has similar distributions between two designs of layer and different distributions between layers. The study can provide design reference on cladding for relevant engineering design.

Copyright © 2018 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In