ML082480700
| ML082480700 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 09/08/2008 |
| From: | Stang J Plant Licensing Branch II |
| To: | Morris J Duke Energy Carolinas |
| Stang J | |
| References | |
| TAC MD3729, TAC MD3730 | |
| Download: ML082480700 (6) | |
Text
September 8, 2008 Mr. J. R. Morris Site Vice President Catawba Nuclear Station Duke Energy Carolinas, LLC 4800 Concord Road York, SC 29745
SUBJECT:
CATAWBA NUCLEAR STATION, UNITS 1 AND 2, REQUEST FOR ADDITIONAL INFORMATION (RAI) REGARDING RELIEF 06-CN-003, USE OF POLYETHYLENE MATERIAL IN NUCLEAR SAFETY-RELATED PIPING APPLICATIONS (TAC NOS. MD3729 AND MD3730)
Dear Mr. Morris:
By letter dated October 26, 2006, as supplemented by letters dated June 21, 2007, March 13, 2008, and May 29, 2008, Duke Energy Carolinas, LLC, the licensee, submitted a request for relief RR-06-CN-003 from the American Society of Mechanical Engineers (ASME), Boiler and Pressure Vessel Code (Code),Section XI, 1998 Edition through 2000 Addenda requirement pertaining to using high-density polyethylene (HDPE) pipe in lieu of the ASME Code requirements for Class 3 carbon steel piping for the ASME Code Class 3 piping for the third 10-year inservice inspection interval (ISI) at Catawba Nuclear Station, Units 1 and 2 (Catawba 1 and 2). There are a total of 8 lines for which the licensee is seeking approval for the use of HDPE pipe. These lines are the supply and return buried lines 1A, 1B, 2A and 2B, which run to and from the diesel generator jacket water coolers. The U.S. Nuclear Regulatory Commission (NRC) staff has identified additional information needed to complete its entire review of this relief request. The NRC staff is seeking information concerning supply lines 1B, 2B and return lines 1A, 1B, 2A, and 2B. The RAI is provided as an enclosure to this letter.
The NRC staff has concluded that the licensee has provided sufficient information for the NRC staff to accept the use of HDPE pipe for the 1A and 2A supply lines to the diesel generator jacket water coolers for the third 10-year ISI interval at Catawba 1 and 2. The NRC will document this in the near future.
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
Enclosure:
Request for Additional Information cc w/encl: See next page
Mr. J. R. Morris September 8, 2008 Site Vice President Catawba Nuclear Station Duke Energy Carolinas, LLC 4800 Concord Road York, SC 29745
SUBJECT:
CATAWBA NUCLEAR STATION, UNITS 1 AND 2, REQUEST FOR ADDITIONAL INFORMATION (RAI) REGARDING RELIEF 06-CN-003, USE OF POLYETHYLENE MATERIAL IN NUCLEAR SAFETY-RELATED PIPING APPLICATIONS (TAC NOS. MD3729 AND MD3730)
Dear Mr. Morris:
By letter dated October 26, 2006, as supplemented by letters dated June 21, 2007, March 13, 2008, and May 29, 2008, Duke Energy Carolinas, LLC, the licensee, submitted a request for relief RR-06-CN-003 from the American Society of Mechanical Engineers (ASME), Boiler and Pressure Vessel Code (Code),Section XI, 1998 Edition through 2000 Addenda requirement pertaining to using high-density polyethylene (HDPE) pipe in lieu of the ASME Code requirements for Class 3 carbon steel piping for the ASME Code Class 3 piping for the third 10-year inservice inspection interval (ISI) at Catawba Nuclear Station, Units 1 and 2 (Catawba 1 and 2). There are a total of 8 lines for which the licensee is seeking approval for the use of HDPE pipe. These lines are the supply and return buried lines 1A, 1B, 2A and 2B, which run to and from the diesel generator jacket water coolers. The U.S. Nuclear Regulatory Commission (NRC) staff has identified additional information needed to complete its entire review of this relief request. The NRC staff is seeking information concerning supply lines 1B, 2B and return lines 1A, 1B, 2A, and 2B. The RAI is provided as an enclosure to this letter.
The NRC staff has concluded that the licensee has provided sufficient information for the NRC staff to accept the use of HDPE pipe for the 1A and 2A supply lines to the diesel generator jacket water coolers for the third 10-year ISI interval at Catawba 1 and 2. The NRC will document this in the near future.
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
Enclosure:
Request for Additional Information cc w/encl: See next Page Distribution:
PUBLIC RidsNrrDorlLpl2-1Resource LPL2-1 R/F RidsOgcRpResource RidsNrrLAMOBrienResource RidsAcrsAcnw_MailCTRResource RidsNrrPMJStangResource RidsRgn2MailCenterResource RidsNrrDorlDprResource RidsNrrDeEmcbKManolyResource RidsNrrDeEmcbCBasavaraju Accession Number: ML081920431 OFFICE NRR/LPL2-1/PM NRR/LP2-1/LA NRR/LPL2-1/BC NAME JStang MOBrien MWong DATE 9/8/2008 9/8/2008 9/8/2008 OFFICIAL RECORD COPY
OFFICE OF NUCLEAR REACTOR REGULATION MECHNICAL AND CIVIL ENGINEERING BRANCH REQUEST FOR ADDITIONAL INFORMATION REGARDING RELIEF 06-CN-003, USE OF POLYETHYLENE MATERIAL IN NUCLEAR SAFETY-RELATED PIPING APPLICATIONS CATAWBA NUCLEAR STATION UNITS 1 AND 2 TAC NOS. MD3729 AND MD3730 By letter dated October 26, 2006, as supplement by letters dated June 21, 2007, March 13, 2008, and May 29, 2008, Duke Energy Carolinas, LLC, the licensee, submitted a request for relief RR-06-CN-003 from the American Society of Mechanical Engineers (ASME), Boiler and Pressure Vessel Code (Code),Section XI, 1998 Edition through 2000 Addenda requirement pertaining to using high-density polyethylene (HDPE) pipe in lieu of the ASME Code requirements for Class 3 carbon steel piping for the ASME Code Class 3, 12-inch nominal diameter supply and return buried piping to and from the diesel generator jacket water coolers for the third 10-year inservice inspection (ISI) interval at Catawba Nuclear Station, Units 1 and 2 (Catawba 1 and 2). There are a total of 8 lines for which the licensee is seeking approval for the use of HDPE pipe, supply and return lines 1A, 1B, 2A and 2B. The U.S. Nuclear Regulatory Commission (NRC) staff has identified additional information needed to complete its review of this relief request. The NRC staff is seeking information concerning supply lines 1B, 2B and return lines 1A, 1B, 2A, and 2B.
The NRC staff has concluded that the licensee has provided sufficient information for the NRC staff to accept the use of HDPE pipe for the 1A and 2A supply lines to the diesel generator jacket water coolers for the third 10-year ISI interval. The NRC will document this in the near future.
For the NRC staff to make a determination regarding the acceptability of the entire proposed alternative, the licensee is requested to respond to the following items.
- 1. In the relief request 06-CN-003, dated October 26, 2006, the licensee stated that the request for relief is to support a proposed alternative of utilizing polyethylene material in lieu of steel material in piping associated with the emergency diesel generator jacket water coolers and other nuclear safety related piping applications. The licensee is requested to clarify whether the relief request is limited to a total of eight (8) lines only, namely four (4) emergency diesel jacket water intake or supply lines (1A, 1B, 2A, 2B), and four (4) emergency diesel jacket water discharge lines (1A, 1B, 2A, 2B), and that no other nuclear safety related piping applications are included in the relief request.
- 2. In Appendix A of the October 26, 2006 letter (Analysis for Catawba Piping), of the relief request, the licensee included the detailed analytical calculations for 12 inch supply lines for Diesel Buildings 1A and 2A along with simple isometrics of the piping model. The licensee is requested to supplement its request to confirm that the analysis for supply lines 1B, & 2B, and Enclosure
discharge lines 1A, 1B, 2A, and 2B will employ the same methodology, assumptions, parameters, and allowable limits reviewed and approved by the staff for intake lines 1A and 2A.
In addition to confirming the analysis methodology, the licensee is requested to provide (a) input parameters (pipe size, wall thickness, design pressure, and design temperature), (b) simple isometrics of the piping model, and (c) a summary of results based on as-designed analysis for the remaining six (6) emergency diesel jacket water lines, namely two (2) intake or supply lines (1B, & 2B), and four (4) discharge lines (1A, 1B, 2A, and 2B).
Catawba Nuclear Station, Units 1 & 2 Page 1 of 2 cc:
Site Vice President Catawba Nulcear Station Duke Power Company, LLC 4800 Concord Road York, SC 29745 Associate General Counsel and Managing Attorney Duke Energy Carolinas, LLC 526 South Church Street - EC07H Charlotte, North Carolina 28202 Regulatory Compliance Duke Energy Corporation 4800 Concord Road York, South Carolina 29745 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 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 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 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 Vice President Customer Relations and Sales Westinghouse Electric Company 6000 Fairview Road 12th Floor Charlotte, North Carolina 28210 Owners Group (NCEMC)
Duke Energy Corporation 4800 Concord Road York, South Carolina 29745 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 Group Vice President, Nuclear Generation and Chief Nuclear Officer P.O. Box 1006-EC07H Charlotte, NC 28201-1006