Pressure Vessel Research Council

Because the Ki, and Ki curves in the ASME Code are normalized to REndt, potential application of the Master Curve procedure within the ASME Code structure is not straightforward. Figure 10.7 from Sokolov and Nanstad (1999) shows the relationship between REndt and the Master Curve Eo for the steels used to construct the A curve shown in Fig. 10.2. To overcome the lack of correlation between Eo and REndt, the Pressure Vessel Research Council and the Electric Power Research Institute (EPRI) in the USA developed a separate reference temperature based on Eo (Server et al, 1998 Van Der Sluys et al., 2000, 2001a, b). This reference temperature, RTj, was developed by determination of a temperature offset to Eo that would bound the fracture toughness data similar to that of the Ric curve in the ASME Code and has been incorporated into the ASME Code by Code Cases N-629 (ASME, 2013b) and N-631 (ASME, 2013c). Thus, in this scheme, Eq. 10.11 is contained in both Code Cases ... 

Sponsored by the Pressure Vessel Research Committee of the Welding Research Council, the Nippon Steel Corporation, and the National Science Foundation. 

The counsel and assistance of the members of the Pressure Vessel Research Committee of the Welding Research Council and the work of N. Murayama of the Nippon Steel Company, who performed much of the research as part of his graduate program at Lehigh University, is gratefully acknowledged. 

A. The material used to manufacture the flywheel of the reactor coolant pump motor will be produced by a commercially acceptable process that minimizes flaws, such as the vacuum melt and degassing process. This provides adequate fracture toughness properties under reactor operating conditions. The acceptance criteria for flywheel design will be compatible with the safety philosophy of the Pressure Vessel Research Committee (PVRC) of the Welding Research Council (WRC) primary coolant pressure boundary criteria as appropriate considering the inherent design and functional requirement differences between the pressure boundary and the flywheel. 

Bijlaard, P. P., Computation of the Stresses from Local Loads in Spherical Pressure Vessels or Pressure Vessel Heads, Welding Research Council Bulletin No. 34, 1957. 

Khki.s, II., "A Review uml livulualion ol Computer Programs Cor the Analysis of Stresses in Pressure Vessels," IVTfC HuUeiin No. 108, Welding Research Council, New York, September... 

Maxwell, R. L., and R. W. Holland, Collapse Test of a Thin-Walled Cylindrical Pressure Vessel with Radially Attached Nozzle, WRC Bulletin No. 230, Welding Research Council, New York, September 1977. 

Rodabaugh, E. C., Review of Service Experience and Test Data on Openings in Pressure Vessels with Non-Integral Reinforcing, WRC Bulletin No. 166, Welding Research Council, New York, October 1971. 

Taylor, C. E., and N. C. Lind, "Photoelastic Study of the Stresses near Openings in Pressure Vessels, WRC BuUeiin No. 113, Welding Research Council, New York, April 1966. 

James, L.A. Fatigue crack propagation behavior of pressure vessel steels. Bulletin 194, Welding Research Council NY (1974)... 

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