ENS 42059
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ENS Event | |
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13:30 Oct 18, 2005 | |
Title | Ut Examination Discovered an Unacceptable Spray Line to Pressurizer Weld |
Event Description | Ultrasonic Testing (UT) during the current refueling outage revealed three (3) indications unacceptable to ASME Section XI code on the 4 inch line "3RCS-004-224-1" Reactor Coolant System Pressurizer Nozzle to safe end weld. Two indications are circumferential, 6.4 inches and 7.7 inches in length, and the third is .25 inches long axis. This condition has existed since construction, i.e., circa 1984. There is no indication of any past RCS leakage from any of these weld defect indications. A weld overlay repair is currently in progress with five of seven passes completed which will meet ASME code requirements for all modes of operation.
The licensee will inform state/local agencies and has informed the NRC Resident Inspector.
An Update of Event Notification 42059 is being made to correct previous information regarding the ultrasonic examination results for the condition reported on October 18, 2005. The results of examination have been shown to reveal the presence of 3 flaws (2 circumferential flaws indicative of lack of fusion, one totaling 16.75 inches, the other 7.7 inches, and 1 axial planar flaw of 0.25 inches). NRC verbal approval of the associated weld repair process was provided 10/21/05. No further updates are expected." R1DO (John Kinneman) notified. The NRC Resident Inspector was notified of this update by the licensee. |
Where | |
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Millstone Connecticut (NRC Region 1) | |
Reporting | |
10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded | |
Time - Person (Reporting Time:+0.73 h0.0304 days <br />0.00435 weeks <br />9.99954e-4 months <br />) | |
Opened: | Janet Novak 14:14 Oct 18, 2005 |
NRC Officer: | Steve Sandin |
Last Updated: | Oct 21, 2005 |
42059 - NRC Website
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WEEKMONTHYEARENS 452042009-07-13T07:03:00013 July 2009 07:03:00
[Table view]10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded Degraded Condition Due to Rcs Pressure Boundary Leak ENS 420592005-10-18T13:30:00018 October 2005 13:30:00 10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded Ut Examination Discovered an Unacceptable Spray Line to Pressurizer Weld 2009-07-13T07:03:00 | |
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