ML082530213
| ML082530213 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 12/31/2004 |
| From: | Entergy Nuclear Operations, Entergy Nuclear Vermont Yankee |
| To: | NRC/SECY/RAS |
| SECY RAS | |
| References | |
| 06-849-03-LR, 50-271-LR, Entergy-Applicant-E3-13-VY, RAS M-313 | |
| Download: ML082530213 (2) | |
Text
VERMONT YANKEE 2004 REFUELING OUTAGE RFO-24 DRYER EXAMINATION
SUMMARY
AND RESULTS The steam dryer examination scope at Vermont Yankee for the twenty-fourth refueling outage ("RFO-24),
conducted in the Spring of 2004, is summarized as follows:
Location Examination Method Number of Discrete Exams Dryer OD Horizontal Welds Dryer OD Vertical Welds OD Covers and Penetrations Lifting Rods Outer Plenum Dryer Leveling Screws Dryer Repair Hardware Dryer Tie Bars Steam Dam Gussets Steam Dryer Hood Cover Plates Steam Dryer Hood End Plates Welded Dryer Bank Support Hardware at Lifting Lugs Dryer Vane Bank Outlet Fillet Welds Drain Channel Welds Dryer ID Vertical Welds Dryer ID Horizontal Welds VT-I VT-i VT-I VT-I VT-I VT-I VT-I VT-I VT-i VT-I VT-I VT-1 VT-I VT-1 VT-1 VT-I VT-I VT-3 VT-3 VT-3 3
4 32.
part of 2004 modification part of 2004 modification part of 2004 modification part of 2004 modification part of 2004 modification part of 2004 modification part of 2004 modification part of 2004 modification 22 27 55 22 52 2
2 24 42 Dryer ID Struts Dryer Plate Exams OD General Condition ID General Condition TotAý]Vtker of Exams U.S. NUOLEAF( kEU&QKf6If 287 USNRC i
August 12, 2008 (11:00am)
OFFICE OF SECRETARY RULEMAKINGS AND ADJUDICATIONS STAFF
-0 In the Matter of Docket No. 60 -7Z71 Official Exhibit No.
OFFERED by- ýscaticseee Intervenor, NRC Staff Other IDENTIFIED on 08i21 Witness/Panel I..J*C.
Action Taken:
ITTREEJECTED WffHIRAWN ReIoortelfClerk-
"AC,
S This summary scope resulted in approximately 300 individually identified examinations.
Four Indication Notification Reports (INR) were initiated, describing a total of 20 relevant (recordable) indications. Two of these indications, which were identified on Indication Notification Report INR-VYR24-0 1, were weld repaired. The remaining 18 indications was dispositioned "use-as-is," based on evaluation and recommendation by vendor and Entergy engineering personnel.
In RFO-24, a stiffening modification was made to the dryer, in anticipation of extended power uprate (EPU).
These modifications were examined in RFO-25 and RFO-26, and the results of those examinations are found in the exhibits related to those outages.
INR Location Comments 04-01 Vertical Weld V02-90 & Outer Plenum Weld 2 Indications, each approx. 3 inches long; both OP-V9-0; were weld repaired in 2004. Subsequent exams Vertical Weld V02-270 & Outer Plenum Weld show no new indications.
OP V19-180 04-02 Interior Vertical Welds HB-V04, HC-V06-180, 16 Indications HC-V06-000, HD-VO 1 04-03 Surface Deposits Originally reported as possible erosion.
Determined to be NRI 04-04 Drain Channel Vertical Weld DC-V04C; Weld 2 Indications Indication @ 1850 Drain Pipe