The presence of progressive indications in critical components invariably leads to decisions about run, repair, or replacement. However, the presence of surface cracks in a thick-walled component may not mean a steam leak is imminent and in certain circumstances, operating with cracks may be acceptable. Assessments in such cases depend on accurate crack growth data and analytical procedures such as time of flight and phased array examinations. In view of the uncertainties in operating conditions and the lack of crack growth data on service-exposed material, many utilities opt for defect repair during planned outages. To read the full discussion on this important matter click here.

To learn mmore about Run, Repair, Replace considerations contact Pamela Hamblin-Smoske at (561) 353-5804 or email her at psmoske@thielsch.com