Title
10 CFR 50.55a(g)(4), Inservice Inspection Standards Requirement for Operating Plants, states, in part, Throughout the service life of a pressurized water-cooled nuclear power facility, components that are classified as
ASME Code Class 1, Class 2, and Class 3 must meet the requirements set forth in Section XI of the
ASME Code. The
ASME Code,
Section XI, Article IWA-2610, requires that a reference system be established for all welds and areas subject to a surface or volumetric examination. This includes identifying each weld that is subject to
ASME Section XI requirements.Contrary to the above, prior to April 12, 2017, the licensee failed to establish a reference system for all welds and areas subject to a surface or volumetric examination. Specifically, five welds located in an
ASME Code,
Section XI, Class 2, train A and train B refuel water suction lines were not identified as applicable
ASME Section XI welds. The licensee restored compliance by correctly reclassifying the subject welds and entering them in the
ASME Section XI program. The finding was of very low safety significance(Green) because the finding did not represent an actual loss of safety function of a system or train and did not result in the loss of a single train for greater than technical specification allowed outage time. This issue was entered into the licensees corrective action program as Condition Report 17-05607.
