ENS 53734

v t e ENS Event
04:00 Nov 11, 2018
Title	Degraded Condition Due to Indication During Ultrasonic Inspection of Reactor Head Nozzle Penetration
Event Description	On November 11, 2018, during ultrasonic data analysis from reactor vessel closure head in-service inspections, signals that display characteristics consistent with primary water stress corrosion cracking in head penetration 33 were identified. No indications of boric acid leakage and no surface indications were detected at this location during bare metal visual inspection. The plant was in cold shutdown at 0% power and in Mode 6 for a refueling outage at the time of discovery. Repair actions will be completed prior to plant startup from the outage. This condition has no impact to the health and safety of the public. This report is being made in accordance with 10 CFR 50.72(b)(3)(ii)(A) for degradation of a principal safety barrier. The licensee notified the NRC Senior Resident Inspector.

ENS 53734 +/-
Where
Palisades Michigan (NRC Region 3)
Reporting

10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded
Time - Person (Reporting Time:+17.98 h0.749 days <br />0.107 weeks <br />0.0246 months <br />)
Opened:	Mike Bailey 21:59 Nov 11, 2018
NRC Officer:	Dong Park
Last Updated:	Nov 11, 2018
53734 - NRC Website
v • d • e

v t e Emergency Notification System
Palisades with 10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded
WEEKMONTHYEAR		Degraded Condition 2020-09-11T23:30:00 [Table view]
[ENS list for Palisades]

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