Preliminary test results from the HSST shallow-crack fracture toughness program. [Heavy Section Steel Technology. A36, A517, and A533 B steels]

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The Heavy Section Steel Technology (HSST) Program under sponsorship of the Nuclear Regulatory Commission (NRC) is investigating the influence of crack depth on the fracture toughness of reactor pressure vessel steel. The ultimate goal of the investigation is the generation of a limited data base of elastic-plastic fracture toughness values appropriate for shallow flaws in a reactor pressure vessel and the application of this data to reactor vessel life assessments. It has been shown that shallow-flaws play a dominant role in the probabilistic fracture mechanics analysis of reactor pressure vessels during a pressurized-thermal-shock event. In addition, recent research has shown ... continued below

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Pages: (14 p)

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Theiss, T.J.; Robinson, G.C. (Oak Ridge National Lab., TN (USA)) & Rolfe, S.T. (Kansas Univ., Lawrence, KS (USA). Dept. of Civil Engineering) January 1, 1991.

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The Heavy Section Steel Technology (HSST) Program under sponsorship of the Nuclear Regulatory Commission (NRC) is investigating the influence of crack depth on the fracture toughness of reactor pressure vessel steel. The ultimate goal of the investigation is the generation of a limited data base of elastic-plastic fracture toughness values appropriate for shallow flaws in a reactor pressure vessel and the application of this data to reactor vessel life assessments. It has been shown that shallow-flaws play a dominant role in the probabilistic fracture mechanics analysis of reactor pressure vessels during a pressurized-thermal-shock event. In addition, recent research has shown that the crack initiation toughness measured using specimens with shallow flaws is greater that the toughness determined with conventional, deeply notched specimens at temperatures within the transition region for non-nuclear steels. The influence of crack depth on the elastic-plastic fracture toughness for prototypic reactor material is being investigated. Preliminary results indicate a significant increase in the toughness associated with shallow-flaws which has the potential to significantly impact the conditional probability of vessel failure. 8 refs., 4 figs., 1 tab.

Physical Description

Pages: (14 p)

Notes

OSTI; NTIS; INIS; GPO Dep.

Source

  • American Society of Mechanical Engineers (ASME) pressure vessels and piping conference, San Diego, CA (USA), 23-27 Jun 1991

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  • Other: DE91010147
  • Report No.: CONF-910602-22
  • Grant Number: AC05-84OR21400
  • Office of Scientific & Technical Information Report Number: 5681669
  • Archival Resource Key: ark:/67531/metadc1091010

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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, 1991

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  • Feb. 10, 2018, 10:06 p.m.

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  • Feb. 16, 2018, 6:17 p.m.

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Theiss, T.J.; Robinson, G.C. (Oak Ridge National Lab., TN (USA)) & Rolfe, S.T. (Kansas Univ., Lawrence, KS (USA). Dept. of Civil Engineering). Preliminary test results from the HSST shallow-crack fracture toughness program. [Heavy Section Steel Technology. A36, A517, and A533 B steels], article, January 1, 1991; Tennessee. (digital.library.unt.edu/ark:/67531/metadc1091010/: accessed April 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.