ML13053A322
| ML13053A322 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 02/27/2013 |
| From: | Boska J Plant Licensing Branch II |
| To: | |
| Boska, J P | |
| Shared Package | |
| ML13035A318 | List: |
| References | |
| Download: ML13053A322 (7) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555*0001 February 27,2013 LICENSEE: Duke Energy Carolinas, LLC FACILITY: Oconee Nuclear Station, Units 1, 2, and 3
SUBJECT:
SUMMARY
OF JANUARY 30, 2013, MEETING WITH DUKE ENERGY CAROLINAS, LLC, TO DISCUSS ONGOING MAJOR PRO~IECTS AT OCONEE NUCLEAR STATION, UNITS 1, 2, AND 3 On January 30,2013, a Category 1 public meeting was held between the U.S. Nuclear Regulatory Commission (NRC) staff and representatives of Duke Energy Carolinas, LLC (the licensee) at the Oconee Nuclear Station visitors center in Seneca, South Carolina. The purpose of the meeting was to allow the licensee to update the NRC staff on the status of the ongoing major projects at the Oconee Nuclear Station, Units 1, 2, and 3 (ONS 1/2/3). A list of attendees is enclosed. The NRC's meeting slides are available from the Agencywide Documents Access and Management System (ADAMS) on the NRC web site, www.nrc.gov, under Accession No. ML13035A244. The licensee's meeting slides are at ADAMS Accession No. ML13035A233.
The licensee presented a summary of the status of the following major projects which are ongoing at ONS 1/2/3:
- Protected Service Water (PSW) system
- Installation of Main Steam Isolation Valves (MSIVs)
- National Fire Protection Association (NFPA) Standard 805 Transition The licensee is currently replacing the existing RPS and ES systems in all three Oconee units with new state of the art digital systems. These systems are used to automatically actuate reactor shutdown and actuate ES systems if needed to maintain the reactors in a safe and stable condition. The licensee stated that the new RPS and ES systems are now operational in Units 1 and 3, with installation planned for Unit 2 during the Fall 2013 refueling outage.
The licensee is in the process of installing a new PSW system. The PSW system is required by the NRC's license amendment which approved the transition from the original fire protection program to a fire protection program based on NFPA 805. The PSW system is a diverse system to other plant systems, and can be used to maintain the reactors in a safe shutdown condition if needed for accidents such as fires and high energy line breaks (HELBs). The PSW system consists of new electrical power supplies for existing plant safety systems, as well as a replacement pump for the station auxiliary service water pump, which adds water to the steam generators in order to remove decay heat from the reactor coolant system once the reactor is shutdown, if the normal plant systems are not available. The installation of the PSW system will reduce the overall plant risk in the event of a fire or HELB at the Oconee site. During the meeting the licensee indicated that although the majority of the system has been installed, they are experiencing delays in completing the PSW system installation. The licensee submitted a formal request to the NRC to extend the required completion date of January 1, 2013. The NRC
- 2 denied the extension request by letter dated January 15, 2013, ADAMS Accession No. ML12345A201, due to the risk significance of this plant modification and the need to have it installed in a timely manner. The licensee stated that they have augmented the management of the PSW project and will be improving the projected in-service date of the first phase of the project, which will allow the PSW building to supply electrical power to the Standby Shutdown Facility (SSF) in the event of a failure of the SSF diesel generator. However, before installing the new PSW pump in the auxiliary building, they still need to resolve area ventilation issues and reduce potential heat buildup during scenarios that rely on the PSW system. NRC management stressed the importance of achieving the risk benefit from the PSW system.
The licensee has planned for some time to install MSIVs for all three Oconee units. The MSIVs would provide additional margin to ensure high energy line breaks (HELBs) can be mitigated.
However, the licensee stated that the MSIVs provide only a small risk improvement and the cost of the project has increased Significantly since it was originally proposed. The licensee stated that they would be considering other alternatives to MSIVs, but no decision has been made at this time.
ONS 1/213 is in the process of transitioning to the NFPA 805 standard for compliance with the NRC fire protection regulations, Title 10 of the Code of Federal Regulations, Part 50, Section 50.48. The NRC staff issued the license amendments approving the transition on December 29,2010 (ADAMS Accession No. ML103630612). The licensee acknowledged that they are behind schedule on installation of the PSW system, which is required by the license amendments. The licensee described the additional work they have completed or have in progress as part of the transition to NFPA 805, and described compensatory measures that are in place until the plant modifications are completed.
Public Meeting Feedback forms were made available at the meeting. As of the date of this meeting summary, no feedback forms have been received. The NRC and the licensee also held a non-public portion of the meeting. This portion of the meeting was closed to the public because sensitive security-related information was discussed.
- 3 Please direct any inquiries to me at 301-415-2901, or by email to John.Boska@nrc.gov.
C1L~~
~n P. Boska, Senior Project Manager Plant Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-269, 50-270, and 50-287
Enclosure:
List of Attendees cc w/encls: Distribution via Listserv
UNITED STATES NUCLEAR REGULATORY COMMISSION MEETING ATTENDANCE FORM
Subject:
Oconee Nuclear Station Major Projects Meeting Date: January 30.2013 Location: Oconee Visitor's Center PLEASE PRINT LEGIBLY ORGANIZATION
UNITED STATES NUCLEAR REGULATORY COMMISSION MEETING ATTENDANCE FORM
Subject:
Oconee Nuclear Station Major Projects Meeting Date: January 30. 2013 Location: Oconee Visitor's Center PLEASE PRINT LEGIBLY NAME ORGANIZATION
UNITED STATES NUCLEAR REGULATORY COMMISSION MEETING ATTENDANCE FORM
Subject:
Oconee Nuclear Station Major Proiects Meeting Date: January 30, 2013 Location: Oconee Visitor's Center PLEASE PRINT LEGIBLY NAME ORGANIZATION hne yFranf..: fJa:tue({ OIA/bJ~ Col
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-3 Please direct any inquiries to me at 301-415-2901, or by email to John. Boska@nrc.gov.
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John P. Boska, Senior Project Manager Plant licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-269, 50-270, and 50-287
Enclosure:
List of Attendees cc w/encls: Distribution via Listserv DISTRIBUTION:
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