Near attachments, particularly where high restraint.Initiate on the inside of the tube cracks oftenĪssociated with corrosion pits or other surface Multi-array, multiple, transgranular cracks that Mechanism Chapter in Volume 2 Thick-Edged Fracture Metallographic Features Typical Locations Possible Surface Appearance Other Likely Macroscopic and Screening Table for Water-Touched Boiler Tube Failures Typical Fracture The table also includes a reference to the applicable chapter in EPRI report 1012757 for more information on the respective degradation mechanism. The following table provides information that can be used to perfrom an initial screening of a boiler tube failure to identify a likely degradation mechanism that may have contributed to the failure. Screening Table for Water-Touched Boiler Tube Failures (Chapter 2)
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