NUREG/CR-6540 BMI-2196 State-of-the-Art Report on Piping Fracture Mechanics Manuscript Completed: November 1997 Date Published: Janua~y 1998 preparedby G. M. Wikowski, R. J. Olson, P. M. Scott Battelle 505 King Avenue Columbus, OH 4320 1 M. Mayfield, NRC Project Manager Prepared for Division of Engineering Technology Office of Nuclear Regulatory Research U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 NRC Job Code D2060