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On a Design Acceptability of 90° Elbow According to Pipe Length at Elevated Temperature Condition

[+] Author Affiliations
Seong-Yun Jeong, Min-Gu Won, Jae-Boong Choi

Sungkyunkwan University, Suwon, Korea

Nam-Su Huh

Seoul National University of Science and Technology, Seoul, Korea

Young-Jin Oh

KEPCO Engineering & Construction Co. Inc., Kimcheon, Korea

Paper No. PVP2016-63317, pp. V003T03A091; 7 pages
  • ASME 2016 Pressure Vessels and Piping Conference
  • Volume 3: Design and Analysis
  • Vancouver, British Columbia, Canada, July 17–21, 2016
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 978-0-7918-5039-8
  • Copyright © 2016 by ASME


Sodium-cooled Fast Reactor, SFR is promising candidate of Generation-IV reactor. SFR is operated at high temperature and low pressure. For reducing high thermal stress, thin-walled components and structures are employed for SFR. However, thins-walled components are vulnerable to seismic damage[1].

In this paper, the structural integrity assessment are performed to investigate the effect of piping length on creep-fatigue and seismic damage at elevated temperature. L-shaped elbow is considered for piping design and finite element analyses are conducted to calculate creep-fatigue and seismic damage. The evaluation of creep fatigue damage is carried out according to the elevated temperature design codes of ASME B&PV Sec. III Subsec. NH-3200[2]. Seismic damage are evaluated based ASME B&PV Sec. III Subsec. NB-3600[3] and ASME B&PV Sec. III Div.5 HBB-3200[4]. From the results of creep-fatigue and seismic damage, limit length of piping is determined.

Copyright © 2016 by ASME
Topics: Temperature , Design , Pipes



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