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Integral Mean of Yield Concept Applied to Thermal Hot Spots: Validation of a Level 2 Damage Assessment Method

[+] Author Affiliations
Henry Kwok

Brighton Solutions, Inc., Calgary, AB, Canada

Simon Yuen

Suncor Energy Inc., Calgary, AB, Canada

Jorge Penso

Shell Global Solutions (US) Inc., Houston, TX

Paper No. PVP2018-85068, pp. V03BT03A019; 9 pages
doi:10.1115/PVP2018-85068
From:
  • ASME 2018 Pressure Vessels and Piping Conference
  • Volume 3B: Design and Analysis
  • Prague, Czech Republic, July 15–20, 2018
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 978-0-7918-5163-0
  • Copyright © 2018 by ASME and Shell Oil Company

abstract

The overall framework for a Level 2 assessment of local thermal hot spot in pressure vessels was first developed by Seshadri [1]. The assessment procedure invokes the concept of integral mean of yield and the concept on a reference volume to determine the reduction of load capacity caused by hot spot damage. This paper investigates the accuracy of this assessment by comparing the results of the Level 2 assessment with a Level 3 assessment (inelastic finite element analysis). Three examples with varying pressure component and hot spot sizes are considered. The comparison yielded a low variance between the Level 2 and Level 3 assessments with the Level 2 assessment being more conservative.

Copyright © 2018 by ASME and Shell Oil Company

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