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Proc. ASME. ICONE18, 18th International Conference on Nuclear Engineering: Volume 5, 147-156, May 17–21, 2010
Paper No: ICONE18-29390
... by the discovery of RV head penetration weld cracking at KEPCO s Ohi-3 in 2004. The preparatory work for the application of preventive maintenance technologies to the nozzle weld was advanced. And as a result, the application of the stress improvement technology to the welds at an actual unit started in 2005...