Probabilistic assessment of critically flawed LMFBR PHTS piping elbows

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One of the important functions of the Primary Heat Transport System (PHTS) of a large Liquid Metal Fast Breeder Reactor (LMFBR) plant is to contain the circulating radioactive sodium in components and piping routed through inerted areas within the containment building. A significant possible failure mode of this vital system is the development of cracks in the piping components. This paper presents results from the probabilistic assessment of postulated flaws in the most-critical piping elbow of each piping leg. The criticality of calculated maximum sized flaws is assessed against an estimated material fracture toughness to determine safety factors and failure ... continued below

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Pages: 18

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Balkey, K.R.; Wallace, I.T. & Vaurio, J.K. January 1, 1982.

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Description

One of the important functions of the Primary Heat Transport System (PHTS) of a large Liquid Metal Fast Breeder Reactor (LMFBR) plant is to contain the circulating radioactive sodium in components and piping routed through inerted areas within the containment building. A significant possible failure mode of this vital system is the development of cracks in the piping components. This paper presents results from the probabilistic assessment of postulated flaws in the most-critical piping elbow of each piping leg. The criticality of calculated maximum sized flaws is assessed against an estimated material fracture toughness to determine safety factors and failure probability estimates using stress-strength interference theory. Subsequently, a different approach is also employed in which the randomness of the initial flaw size and loading are more-rigorously taken into account. This latter approach yields much smaller probability of failure values when compared to the stress-strength interference analysis results.

Physical Description

Pages: 18

Notes

NTIS, PC A02/MF A01; 1.

Source

  • ASME pressure vessel and piping conference, Orlando, FL, USA, 27 Jun 1982

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  • Other: DE83010781
  • Report No.: CONF-820601-29
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 6317572
  • Archival Resource Key: ark:/67531/metadc1212149

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • January 1, 1982

Added to The UNT Digital Library

  • July 5, 2018, 11:11 p.m.

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  • Oct. 18, 2018, 12:43 p.m.

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Balkey, K.R.; Wallace, I.T. & Vaurio, J.K. Probabilistic assessment of critically flawed LMFBR PHTS piping elbows, article, January 1, 1982; United States. (digital.library.unt.edu/ark:/67531/metadc1212149/: accessed November 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.