An unresolved item (
URI) was identified by the inspectors relating to an issue of concern involving Exelons acceptance and characterization of the relevant indication in
weld 4-SR-1006-1 during prior refuel outages. Additional information is required to determine whether a performance deficiency, which is more than minor, exists. Description. Based on a review of Exelon letter dated February 25, 2016, the inspectors preliminarily concluded the relevant indication in
weld 4-SR-1006-1 was incorrectly accepted during prior refuel outages and was not in conformance with
ASME Code Section XI, Article
IWA-3000. Additional inspection, including review of Exelons root cause analysis of this issue, is warranted to determine whether a performance deficiency, which is more than minor, exists related to characterization and acceptance of a relevant indication in
weld 4-SR-1006-1. (
URI 05000317/2016001-01, Issue of Concern Regarding Characterization and Acceptance of a Relevant Indication in Pressurizer to Nozzle
Dissimilar Metal Weld)
