Morning Report for May 10, 2004
Headquarters Daily Report
REGION II
STEAM GENERATOR TUBES DEGRADED - UPDATE
Licensee/Facility:
SOUTHERN NUCLEAR OPERATING CO., INC. Vogtle 2 WAYNESBORO, Georgia Dockets: 05000425 [2] W-4-LP License No: | Notification:
MR Number: 2-2004-0006 Date: 05/10/2004 Call from SRI |
Discussion:
This Morning Report provides updated information concerning confirmed outer diameter (OD) circumferential cracks in Unit 2 steam generator (SG) tubes. Unit 2 is currently in a scheduled refueling outage. The licensee has completed 100% eddy current testing (ECT) of SG hot leg tubes in all four SGs. The results of the ECT identified one tube in SG 1, two tubes in SG 2, three tubes in SG 3, and two tubes in SG 4 with OD cracking. All tubes were stabilized and plugged. Two tubes have been pulled in SG 2 for further analysis to determine the degradation mechanism.
The highest indication by ECT of thru-wall cracking was 38%. This tube was one of the two tubes pulled so the actual thru-wall percentage will not be known until analysis is complete.
This information is current as of 12:00 p.m. 5/10/2004.
Accession Numbers:
Accession No | Accession Date |
ML041310366 | 05/10/2004 |
Contacts:
Name | Office Abbrev | Phone No | E-Mail |
BONSER, BRIAN R | R2 | (404) 562-4540 | BRB1@nrc.gov |
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