Applying the Master Curve approach to a JRQ A533B Cl.1 material as part of the surveillance program of two BWR Units

Research output: Contribution to journalArticle

Authors

  • Rogelio Hernández Callejas
  • A.L. Medina Almazán
  • Marc Scibetta
  • S. Vásquez Belmont
  • M. Santillán Vergara

Institutes & Expert groups

  • NINI - National Institut of Nuclear Institute

Documents & links

Abstract

Experimental measurements of the cleavage fracture toughness (KJc) of specimens were used to apply the Master Curve (MC) approach to a reference RPV steel A533B Cl.1 provided by the International Atomic Energy Agency (IAEA) as part of the surveillance programs of two BWR Units. This investigation focused on four practical issues: the effect of specimen geometry, loading rate and irradiation on the MC and the comparison of the MC to the conventional approach using Charpy data. Experiments on pre-cracked Charpy V-notch (PCCv) specimens validated the use of the Weibull model allowing correcting for the loss of constraint effect. These experiments were also used to determine the ‘‘bias’’ value between PCCv and standard compact tension (1T-C(T)) specimens and the effect of the loading rate on the MC. The reference temperatures indexed to T0 (RTTo and ARTTo) were directly measured and compared to the RTNDT and ARTNDT values obtained using the conventional semi-empirical approach of the American Society of Mechanical Engineers (ASME) Code, demonstrating that the latter approach was more conservative.

Details

Original languageEnglish
Pages (from-to)97-115
JournalEngineering Fracture Mechanics
Volume119
DOIs
Publication statusPublished - Feb 2014

Keywords

  • Master Curve, Loss of constraint, Loading rate effect, Reactor pressure vessel

ID: 170287