Tag Archives: Nondestructive evaluation (NDE)
Materials Reliability Program: Nondestructive Evaluation Technology for Detection of Thermal Fatigue Damage in Piping (MRP-23, Revision 2)
Nuclear plant operating experience has indicated that thermal fatigue cracking can occur in a shallow cracking network (called crazing) or as isolated cracking. This report provides the technical basis for mockup fabrication and nondestructive evaluation procedures for piping and nozzles susceptible to thermal fatigue damage.
Penstocks (pipes that carry water from a hydropower facility’s reservoir to the generator) are difficult to access and inspect. This report discusses tools and service providers for safe, effective penstock inspection; related research; and R&D plans.
As many U.S. nuclear plants enter extended operations, radiation damage is a critical concern. This research investigates the ability of a nondestructive evaluation technique called nonlinear ultrasound to characterize radiation damage in reactor pressure vessel steels over a range of fluence levels (a measure of neutron exposure), irradiation temperatures, and material composition.