ICONE19-43201 Flaw Evaluation of Cracks in Shroud Support Welds of Tokai-2

抄録

Cracks were found at shroud supports of Tokai Daini Power Station (Tokai-2) in the 24^<th> refueling outage. Flaw evaluation of these cracks was performed applying Codes for Nuclear Power Generation Facilities - Rules on Fitness-for-Service - (FFS Code) of Japan Society of Mechanical Engineers (JSME) and Guideline for Inspection and Evaluation of Reactor Internals of Japan Nuclear Technology Institute (JANTI). Evaluation methods and results are outlined in this report. Issues to be studied for better improvement of JSME FFS Code and JANTI Guideline will be discussed.