ML041130662
| ML041130662 | |
| Person / Time | |
|---|---|
| Site: | Prairie Island  |
| Issue date: | 04/30/2004 |
| From: | Mahesh Chawla NRC/NRR/DLPM/LPD3 |
| To: | Solymossy J Nuclear Management Co |
| Chawla M, 415-8371, NRR/DLPM | |
| References | |
| TAC MC1775 | |
| Download: ML041130662 (4) | |
Text
April 30, 2004 Mr. Joseph M. Solymossy Site Vice President Prairie Island Nuclear Generating Plant Nuclear Management Company, LLC 1717 Wakonade Drive East Welch, MN 55089
SUBJECT:
PRAIRIE ISLAND NUCLEAR GENERATING PLANT, UNIT 2 - REQUEST FOR ADDITIONAL INFORMATION ON THIRD 10-YEAR INSERVICE INSPECTION INTERVAL REQUEST FOR RELIEF NO. 16 (TAC NO. MC1775)
Dear Mr. Solymossy:
By letter to the U.S. Nuclear Regulatory Commission (NRC) dated January 7, 2004, the licensee, Nuclear Management Company (NMC), submitted Request for Relief No. 16 from the requirements of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code,Section XI, for Prairie Island, Unit 2.
A draft request for additional information was e-mailed to Mr. Jack Leveille (NMC) on April 8, 2004. This information was discussed with NMC representatives during a telephone conversation on April 14. The NRC staff reviewed the information provided by the licensee during this phone call and needed additional information to complete the review. The staff requested further discussions with the licensee. A follow-up telephone conference was held on April 20, 2004, during which it was determined that the enclosed information is required to complete the evaluation. During this phone call, a mutually agreeable response date of May 31, 2004, was established.
Please provide this information by the requested date in order for us to process this relief request in a timely manner. If you have any further questions, please call me at 301-415-8371.
Sincerely,
/RA AMcMurtray for/
Mahesh Chawla, Project Manager, Section 1 Project Directorate III Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-306 cc w/enclosure: See next page
REQUEST FOR ADDITIONAL INFORMATION ON THIRD 10-YEAR INSERVICE INSPECTION INTERVAL REQUEST FOR RELIEF FOR NUCLEAR MANAGEMENT COMPANY PRAIRIE ISLAND NUCLEAR GENERATING PLANT, UNIT 2 DOCKET NO. 50-306 1.
Regarding Table 1 on Page 10 of the submittal, what was the ultrasonic test (UT) coverage obtained from the previous interval? If, for any weld, the coverage was less than before, please explain.
2.
For certain welds, including RC Weld W-6/2LSU on Page 3, the licensee stated, "the weld was included in the boundary examined by VT-2 during pressure testing" Please provide a brief explanation to state what value has been added through the VT-2 examination. For example, if the results indicated leakage integrity of the component, etc.
3.
For MS Weld W-36, the photo in the attached is not clear. Please provide drawings or sketches that include a cross section of the weld, basic dimensions of the weld and of the adjacent flange. Please explain in detail why UT examination can not be performed on the outside surface as well as on the inside surface when the valve was disassembled.
4.
For MS Weld W-36, the licensee also stated that a VT-1 was performed on the inner diameter (ID) surface. Please explain how a VT-1 can be used to detect flaws. Please explain why surface examinations were not considered on the ID in lieu of VT-1 to detect flaws.
5.
For MS Weld W-36, please provide its pre-service examination record and results.
- See previous concurrence NRR-088 OFFICE PDIII-1/PM PDIII-1/LA EMCB:SC PDIII-1/SC NAME AMcMurtray for MChawla THarris TChan*
LRaghavan DATE 04/ 30/04 04/30/04 04/ 29 /04 04/30/04
Prairie Island Nuclear Generating Plant, Units 1 and 2 cc:
Jonathan Rogoff, Esquire Vice President, Counsel & Secretary Nuclear Management Company, LLC 700 First Street Hudson, WI 54016 Manager, Regulatory Affairs Prairie Island Nuclear Generating Plant Nuclear Management Company, LLC 1717 Wakonade Drive East Welch, MN 55089 Manager - Environmental Protection Division Minnesota Attorney Generals Office 445 Minnesota St., Suite 900 St. Paul, MN 55101-2127 U.S. Nuclear Regulatory Commission Resident Inspector's Office 1719 Wakonade Drive East Welch, MN 55089-9642 Regional Administrator, Region III U.S. Nuclear Regulatory Commission 801 Warrenville Road Lisle, IL 60532-4351 Administrator Goodhue County Courthouse Box 408 Red Wing, MN 55066-0408 Commissioner Minnesota Department of Commerce 121 Seventh Place East Suite 200 St. Paul, MN 55101-2145 Tribal Council Prairie Island Indian Community ATTN: Environmental Department 5636 Sturgeon Lake Road Welch, MN 55089 Nuclear Asset Manager Xcel Energy, Inc.
414 Nicollet Mall, R.S. 8 Minneapolis, MN 55401 John Paul Cowan Executive Vice President & Chief Nuclear Officer Nuclear Management Company, LLC 700 First Street Hudson, WI 54016 Craig G. Anderson Senior Vice President, Group Operations Nuclear Management Company, LLC 700 First Street Hudson, WI 54016