ML052020017
| ML052020017 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 07/21/2005 |
| From: | Stephen Monarque NRC/NRR/DLPM/LPD2 |
| To: | Christian D Virginia Electric & Power Co (VEPCO) |
| Monarque, S R, NRR/DLPM, 415-1544 | |
| References | |
| TAC MC7013 | |
| Download: ML052020017 (4) | |
Text
July 21, 2005 Mr. David A. Christian Sr. Vice President and Chief Nuclear Officer Virginia Electric and Power Company Innsbrook Technical Center 5000 Dominion Blvd.
Glen Allen, Virginia 23060-6711
SUBJECT:
SURRY POWER STATION, UNIT 2 - REQUEST FOR ADDITIONAL INFORMATION REGARDING PROPOSED RELIEF REQUEST FOR THE MAIN STEAMLINE BRANCH CONNECTION WELDOLETS (TAC NO. MC7013)
Dear Mr. Christian:
By letter dated May 20, 2005, Virginia Electric and Power Company (VEPCO) submitted a relief request to use a later edition and addenda to the American Society of Mechanical Engineers Code,Section XI to support the repair and replacement of a main steamline connection at Surry Power Station, Unit 2. Based on its review of the May 20, 2005, submittal, the NRC staff has determined that additional information is required to complete its review.
The NRC staffs questions are provided in the Enclosure. The NRC staff requests a response to this request for additional information within 30 days of the date of this letter.
Sincerely,
/RA/
Stephen R. Monarque, Project Manager, Section 1 Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-281
Enclosure:
As stated cc w/enclosure: See next page
ML052020017 NRR-088 OFFICE PDII-1/PM PDII-2/LA PDII-1/SC NAME SMonarque EDunnington EMarinos DATE 7/20/05 7/20/05 7/21/05
REQUEST FOR ADDITIONAL INFORMATION RELIEF REQUEST TO USE LATER EDITION AND ADDENDA OF ASME CODE SURRY POWER STATION, UNIT 2 VIRGINIA ELECTRIC AND POWER COMPANY
- 1.
Was the original nozzle a Weldolet nozzle? Except for wall thickness, is the replacement nozzle the same configuration as the original nozzle, and is the weld prep the same configuration as the original weld prep? What is the pipe material and wall thickness?
- 2.
The submittal dated May 20, 2005, states that the construction code 1967 Edition of ANSI B31.1 did not require a radiographic test. What are the construction Code nondestructive examination (NDE) inspection requirements? IWA-4540 states that supplemental Owner requirements shall be met. What are the supplementary (Owner)
NDE inspection requirements, if any?
- 3.
The proposed alternative stated that welds will be examined using American Society of Mechanical Engineers (ASME),Section V methodologies with the acceptance criteria to Section III, NC-5330. What ASME Code edition and addenda will be used? Discuss any ustrasonic testing demonstration performed with the procedure to show the effectiveness of the ASME Section V methodologies.
- 4.
This configuration is similar to a nozzle-to-vessel weld (Section XI, Appendix VIII, Supplement 7). For supplement 7 procedure qualifications, computer modeling techniques have been used to identify optimum transducer angles needed to achieve maximum volume coverage. For the augmented inspection plan, discuss the procedure qualification that will be used to achieve maximum coverage.
- 5.
IWA-4540 allows using a system hydrostatic test instead of a volumetric examination.
Explain the difficulties with performing a system hydrostatic test. What action must be taken to isolate the weld and explain why this action is a hardship?
Surry Power Station, Units 1 & 2 cc:
Ms. Lillian M. Cuoco, Esq.
Senior Counsel Dominion Resources Services, Inc.
Building 475, 5th Floor Rope Ferry Road Waterford, Connecticut 06385 Mr. Donald E. Jernigan Site Vice President Surry Power Station Virginia Electric and Power Company 5570 Hog Island Road Surry, Virginia 23883-0315 Senior Resident Inspector Surry Power Station U. S. Nuclear Regulatory Commission 5850 Hog Island Road Surry, Virginia 23883 Chairman Board of Supervisors of Surry County Surry County Courthouse Surry, Virginia 23683 Dr. W. T. Lough Virginia State Corporation Commission Division of Energy Regulation Post Office Box 1197 Richmond, Virginia 23218 Dr. Robert B. Stroube, MD, MPH State Health Commissioner Office of the Commissioner Virginia Department of Health Post Office Box 2448 Richmond, Virginia 23218 Office of the Attorney General Commonwealth of Virginia 900 East Main Street Richmond, Virginia 23219 Mr. Chris L. Funderburk, Director Nuclear Licensing & Operations Support Dominion Resources Services, Inc.
Innsbrook Technical Center 5000 Dominion Blvd.
Glen Allen, Virginia 23060-6711