ML042320667
| ML042320667 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 08/19/2004 |
| From: | Brian Bonser NRC/RGN-II/DRP/RPB2 |
| To: | |
| References | |
| MR 2-2004-0013 | |
| Download: ML042320667 (1) | |
Text
Morning Report Date: AUG 19, 2004 PRIORITY ATTENTION REQUIRED MORNING REPORT - REGION II Licensee/Facility:
Notification:
2-2004-0013 08/19/2004 MR Number:
SOUTHERN NUCLEAR OPERATING CO., INC.
[2] W-4-LP Date:
Vogtle Waynesboro, Georgia 050-00425 Dockets:
STEAM GENERATOR TUBES DEGRADED - UPDATED
Subject:
This Morning Report provides updated information concerning suspected outer diameter (OD) circumferential cracks identified in Unit 2 steam generator (SG) tubes (Morning Reports 2-2004-0005 and 2-2004-0006). The licensee received detailed laboratory analysis of the two SG tubes that were removed from SG2 during the recent Unit 2 refueling outage.
The results showed that the flaw-like signals reported at the top of the tubesheet did not represent OD circumferential cracking. The root cause of the flaw-like signals could not be determined. Uneven distribution of scale and deposits at the top of the hot leg tube sheet is suspected as the cause of the flaw-like signals.
This information is current as of 2:15 p.m. 08/19/04.
Discussion:
Contact:
Email:
Phone No:
Org:
BONSER, BRIAN R BRB1@nrc.gov (404) 562-4540 R2