ML063040044
| ML063040044 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 12/11/2006 |
| From: | Stang J NRC/NRR/ADRO/DORL/LPLII-1 |
| To: | Jamil D Duke Power Co |
| john stang, NRR/DLPM, 301-415-1345 | |
| References | |
| BL-04-001, TAC MC3468, TAC MC3469 | |
| Download: ML063040044 (6) | |
Text
December 11, 2006 Mr. Dhiaa Jamil Vice President Catawba Nuclear Station Duke Power Company LLC 4800 Concord Road York, SC 29745
SUBJECT:
BULLETIN 2004-01, "INSPECTIONS OF ALLOY 82/182/600 MATERIALS USED IN THE FABRICATION OF PRESSURIZER PENETRATIONS AND STEAM SPACE PIPING CONNECTIONS AT PRESSURIZED-WATER REACTORS,"
RESPONSE FOR CATAWBA NUCLEAR STATION, UNITS 1 AND 2 (TAC NOS.
Dear Mr. Jamil:
On May 28, 2004, the U.S. Nuclear Regulatory Commission (NRC) issued Bulletin 2004-01, "Inspections of Alloy 82/182/600 Materials Used in the Fabrication of Pressurizer Penetrations and Steam Space Piping Connections at Pressurized-Water Reactors," to the industry. This bulletin informed addressees that current methods of inspecting the pressurizer penetrations and steam space piping connections fabricated from Alloy 82/182/600 materials may need to be supplemented with additional measures (e.g., bare-metal visual inspections) to detect pressurizer penetration and steam space piping connection flaws or leakage. The bulletin requested that addressees provide the NRC with information related to the materials of construction, the inspections that have been performed, and the inspections which will be performed to verify the integrity of the pressurizer penetrations and steam space piping connections.
By letter dated July 27, 2004 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML042110135), and by a supplemental letters dated September 21, 2004 (ADAMS Accession No. ML042750234), February 24, 2005 (ADAMS Accession No. ML050670481), and June 14, 2005 (ADAMS Accession No. ML051730408), Duke Power Company LLC (the licensee) provided its responses to items 1a, 1b, 1c, and 1d of Bulletin 2004-01 for Catawba Nuclear Station, Units 1 and 2 (Catawba 1 and 2). The licensees responses described its materials of fabrication and past, current and future pressurizer penetrations and steam space piping inspection programs at Catawba 1 and 2.
The licensees response to item 1a reported that some of the materials used in the fabrication of the pressurizer penetrations and steam space piping connections were Alloy 82/182/600 materials. This reply required you to provide further responses to the remaining items in the bulletin.
In response to item 1b, the licensee described prior inspections and inspection results of pressurizer penetrations and steam space piping connections which had been performed at Catawba 1 and 2. The licensees response included the basis for concluding that Catawba 1 and 2 satisfies the applicable regulatory requirements related to the integrity of pressurizer penetrations and steam space piping connections.
D. Jamil In response to item 1c in the bulletin, the licensee provided a description of the Alloy 82/182/600 pressurizer penetration and steam space piping connection inspection program that will be implemented at your plant during the next and subsequent refueling outages. The description included the items to be inspected; the percent coverage that would be performed at each location; the inspection methods to be used; the qualification standards for the inspection methods and personnel; the process used to resolve any inspection indications; the inspection documentation to be generated; and the basis for concluding that your plant will satisfy the applicable regulatory requirements related to the structural and leakage integrity of pressurizer penetrations and steam space piping connections. If leaking pressurizer penetrations or steam space piping connections are found, the licensee indicated that follow-up nondestructive examination (NDE) will be performed to characterize flaws in the leaking penetrations. The licensee provided its plans for expansion of the scope of NDE to be performed if circumferential flaws are found in any portion of the leaking pressurizer penetrations or steam space piping connections.
In response to item 1d in the bulletin, the licensee explained why the inspection program identified in the response to item 1c in the bulletin is adequate for the purpose of maintaining the integrity of the Catawba 1 and 2 reactor coolant pressure boundary and for meeting all applicable regulatory requirements which pertain to your facility.
By letter dated July 27, 2004, the licensee provided a response to item 2a in Bulletin 2004-01.
This letter provided a statement to the NRC indicating that the inspections described in your response to item 1c of the bulletin were completed during a recent Catawba 1 and 2 outage and a description of the as-found condition of the locations inspected was provided. The licensee also described any findings of relevant indications of through-wall leakage and follow-up NDE performed to characterize flaws in leaking penetrations or steam space piping connections. A summary of all relevant indications found by NDE, a summary of the disposition of any findings of boric acid, and a description of any corrective actions taken and/or repairs made as a result of the indications found was also provided in this letter.
The NRC staff has completed its activities associated with the review of the licensees responses to Bulletin 2004-01 and finds the licensees responses to be acceptable. It should be noted that industry commitments or staff regulatory actions may result in the need for you to modify your plans for the inspection and repair of items discussed in Bulletin 2004-01. It is the staffs expectation that you will revise your plan for the inspection and repair of items discussed in Bulletin 2004-01 consistent with other industry commitments or staff regulatory actions. This
D. Jamil closes the staffs efforts with regard to the review of the Bulletin 2004-01 response for Catawba 1 and 2. Please contact me at (301) 415-1345 if you have any questions on this issue.
Sincerely,
/RA/
John Stang, Senior Project Manager Plant Licensing Branch II-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-413 and 50-414 cc: See next page
ML063040044 OFFICE NRR/LPL2-1/PM NRR/LPL2-1/LA NRR/LP1-2/LPM NRR/LPL2-1/BC NAME JStang /MA MOBrien TColburn EMarinos DATE 11/13/06 11/13/06 12/11/06 12/11/06
Catawba Nuclear Station, Units 1 & 2 Page 1 of 2 cc:
Mr. Dhiaa Jamil Vice President Catawba Nuclear Station Duke Power Company, LLC 4800 Concord Road York, SC 29745 Mr. Lee Keller, Manager Regulatory Compliance Duke Energy Corporation 4800 Concord Road York, South Carolina 29745 Ms. Lisa F. Vaughn Associate General Counsel and Managing Attorney Duke Energy Carolinas, LLC 526 South Church Street - EC07H Charlotte, North Carolina 28202 North Carolina Municipal Power Agency Number 1 1427 Meadowwood Boulevard P.O. Box 29513 Raleigh, North Carolina 27626 County Manager of York County York County Courthouse York, South Carolina 29745 Piedmont Municipal Power Agency 121 Village Drive Greer, South Carolina 29651 Mr. Leonard G. Green Assistant Attorney General North Carolina Department of Justice P.O. Box 629 Raleigh, North Carolina 27602 NCEM REP Program Manager 4713 Mail Service Center Raleigh, North Carolina 27699-4713 North Carolina Electric Membership Corp.
P.O. Box 27306 Raleigh, North Carolina 27611 Senior Resident Inspector U.S. Nuclear Regulatory Commission 4830 Concord Road York, South Carolina 29745 Mr. Henry Porter, Assistant Director Division of Waste Management Bureau of Land and Waste Management Dept. of Health and Environmental Control 2600 Bull Street Columbia, South Carolina 29201-1708 Mr. R.L. Gill, Jr., Manager Nuclear Regulatory Issues and Industry Affairs Duke Energy Corporation 526 South Church Street Mail Stop EC05P Charlotte, North Carolina 28202 Saluda River Electric P.O. Box 929 Laurens, South Carolina 29360 Mr. Peter R. Harden, IV, Vice President Customer Relations and Sales Westinghouse Electric Company 6000 Fairview Road 12th Floor Charlotte, North Carolina 28210 Mr. T. Richard Puryear Owners Group (NCEMC)
Duke Energy Corporation 4800 Concord Road York, South Carolina 29745 Ms. Kathryn B. Nolan Senior Counsel Duke Energy Carolinas, LLC 526 South Church Street - EC07H Charlotte, NC 28202
Catawba Nuclear Station, Units 1 & 2 Page 2 of 2 cc:
Division of Radiation Protection NC Dept. of Environment, Health, and Natural Resources 3825 Barrett Drive Raleigh, North Carolina 27609-7721 Mr. Henry Barron Group Vice President, Nuclear Generation and Chief Nuclear Officer P.O. Box 1006-EC07H Charlotte, NC 28201-1006