ML051440456
| ML051440456 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 05/18/2005 |
| From: | Jernigan D Virginia Electric & Power Co (VEPCO) |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 05-324 | |
| Download: ML051440456 (3) | |
Text
VIRGINIA ELECTRIC AND POWEiR COMPANY RICi[MOND, VIRGINIA 23261 May 18,2005 U. S. Nuclear Regulatory Commission Serial No.05-324 Attention: Document Control Desk SPS-LIC/CGL RD Washington, D.C. 20555 Docket Nos.
50-281 License Nos. DPR-37 Gentlemen:
VIRGINIA ELECTRIC AND POWER COMPANY SURRY POWER STATION UNIT 2 REQUEST TO USE LATER EDITION OF ASME SECTION Xi CODE FOR REPAIR/REPLACEMENT ACTIVITIES ON MAIN STEAM BRANCH LINES Surry Power Station Unit 2 is currently in the fourth ten-year Inservice Inspection (ISI)
Interval and uses the 1998 Edition of the ASME Section Xl Code through the 2000 Addenda. As permitted by 10CFR50.55a(g)(4)(iv) and as clarified in Regulatory Issue Summary (RIS) 2004-16, "Use of Later Editions and Addenda to the ASME Code Section Xl for Repair/Replacement Activities," this letter requests NRC approval to apply the following portion of a later ASME Code Addenda to the Surry Unit 2 Fourth Inspection Interval Repair/Replacement Plan, as detailed in the attachment:
ASME Section Xi, 2001 Edition, through 2003 Addenda, Subsubarticle IWA-4540, PRESSURE TESTING OF CLASSES 1, 2, AND 3 ITEMS Virginia Electric and Power Company (Dominion) requests expeditious approval to use the later ASME Code Addenda to permit startup of Unit 2 from Cold Shutdown conditions related to the current refueling outage.
Very truly yours, D. E. Jernigan Site Vice President Commitments made in this letter: None.
-kcq7
cc:
U. S. Nuclear Regulatory Commission Region II Sam Nunn Atlanta Federal Center 61 Forsyth Street, SW Suite 23 T85 Atlanta, Georgia 30303 Mr. S. R. Monarque U. S. Nuclear Regulatory Commission One White Flint North 11555 Rockville Pike Mail Stop 8H12 Rockville, MD 20852 Mr. N. P. Garrett NRC Senior Resident Inspector Surry Power Station
Use of Later ASME Code Edition and Addenda In Accordance with 10CFR50.55a(g)(4)(iv) for Repair/Replacement Activities Dominion requests approval to apply those portions of ASME Section Xl identified in Section 4.0 below for the circumstances detailed in Section 2.0 below.
1.0 ASME Code Comoonent(s) Affected ASME Class 2 branch connections consisting of three 6 inch diameter (1 inch thick) weldolets attached to the 30 inch main steam line on each of three Unit 2 main steam lines.
2.0 Circumstances Necessitating Use of Later Code The hydrostatic test required by Subsubarticle IWA-4540 is not practical.
The original nondestructive examination (NDE) requirements for the 6 inch branch connection to 30 inch main steam lines was a final surface examination (MT) in accordance with B31.1-1967.
During the current Unit 2 refueling outage, the existing 6 inch diameter connections were replaced with weldolets.
NDE (MT) was successfully performed on the root, half way welded out, and on the final weld.
Radiography of the three weldolets would require approximately 48 exposures for each weld and installation of gamma ports into the 30 inch piping to facilitate the radiography process. A double wall radiography is not feasible with the weldolet configuration. Even with the large number of exposures, 100% coverage would not be attained.
3.0 Applicable Code Edition and Addenda
ASME Section Xl, 1998 Edition through the 2000 Addenda, Subsubarticle IWA-4540.
4.0 Later Code Use Requested ASME Section Xl, 2001 Edition through 2003 Addenda, Subsubarticle IWA-4540, for the 6 inch diameter weldolets.
5.0 Related Requirements Related requirements in Article IWA-5000 and Subsubarticle IWA-4221 are satisfied as required by Subsubarticle IWA-4540.