ML032300177

Request for Additional Information Regarding Low Temperature Overpressure TS

ML032300177
Person / Time
Site:	Catawba
Issue date:	08/18/2003
From:	Martin R NRC/NRR/DLPM/LPD2
To:	Jamil D Duke Energy Corp
Martin R, NRR/DLPM, 415-1493
References
TAC MB8106, TAC MB8107, TAC MB8109, TAC MB8110
Download: ML032300177 (6)

Text

August 18, 2003 Mr. D. M. Jamil Vice President Catawba Nuclear Station Duke Energy Corporation 4800 Concord Road York, SC 29745

SUBJECT:

CATAWBA NUCLEAR STATION, UNITS 1 AND 2 RE: REQUEST FOR ADDITIONAL INFORMATION (TAC NOS. MB8106, MB8107, MB8109 AND MB8110)

Dear Mr. Jamil:

By letter dated March 20, 2003, you submitted an application for amendments of the Technical Specifications (TS) for the Catawba Nuclear Station, Units 1 and 2, (Catawba) to revise the reactor vessel pressure-temperature (P/T) limits in the Catawba TS. The U. S. Nuclear Regulatory Commission technical staff has reviewed the application and has determined that additional information is required, as identified in the Enclosure.

We discussed these issues with your staff on August 6, 2003. Your staff indicated that you would attempt to provide your response by September 15, 2003.

Please contact me at (301) 415-1493, if you have any other questions on these issues.

Sincerely,

/RA/

Robert E. Martin, Senior Project Manager, Section 1 Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50-413 and 50-414 cc w/encl: See next page

August 18, 2003 Mr. D. M. Jamil Vice President Catawba Nuclear Station Duke Energy Corporation 4800 Concord Road York, SC 29745

SUBJECT:

CATAWBA NUCLEAR STATION, UNITS 1 AND 2 RE: REQUEST FOR ADDITIONAL INFORMATION (TAC NOS. MB8106, MB8107, MB8109 AND MB8110)

Dear Mr. Jamil:

By letter dated March 20, 2003, you submitted an application for amendments of the Technical Specifications (TS) for the Catawba Nuclear Station, Units 1 and 2, (Catawba) to revise the reactor vessel pressure-temperature (P/T) limits in the Catawba TS. The U. S. Nuclear Regulatory Commission technical staff has reviewed the application and has determined that additional information is required, as identified in the Enclosure.

We discussed these issues with your staff on August 6, 2003. Your staff indicated that you would attempt to provide your response by September 15, 2003.

Please contact me at (301) 415-1493, if you have any other questions on these issues.

Sincerely,

/RA/

Robert E. Martin, Senior Project Manager, Section 1 Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50-413 and 50-414 cc w/encl: See next page DISTRIBUTION:

PUBLIC OGC CHawes KDesai PDII-1 R/F ACRS RMartin JNakoski LPlisco, RII RHaag, RII ADAMS Accession: ML032300177

• see previous concurrence OFFICE PDII-1/PM SRXB/SC

• PDII-1/LA PDII-1/SC NAME RMartin JUhle CHawes JNakoski DATE 08/9/03 08/03/03 08/8/03 08/12/03 OFFICIAL RECORD COPY

REQUEST FOR ADDITIONAL INFORMATION DUKE POWER COMPANY CATAWBA NUCLEAR STATION, UNITS 1 AND 2 DOCKET NOS. 50-413 AND 50-414 The Nuclear Regulatory Commission (NRC) staff has reviewed the licensees submittal dated March 20, 2003, regarding proposed changes to the low temperature overpressure (LTOP)

Technical Specifications (TS). The NRC staff has identified the following information that is needed to enable the continuation of its review.

1. Catawba, Units 1 and 2 and McGuire, Units 1 and 2 are similarly designed plants and the current LTOP TS are very similar for both stations. The proposed changes to the Catawba LTOP TS would result in differences from the McGuire LTOP TS. Identify in detail the bases for proposing a different TS format and content for the two plants LTOP TS.

2. The Westinghouse Improved Standard Technical Specifications (ISTS), NUREG 1431, Standard Technical Specifications, Westinghouse Plants, Revision 2, LTOP TS, Action Item A, provides a limit of 15 minutes for a condition of two charging pumps capable of injecting into the reactor coolant system (RCS) during pump swap operations. The proposed TS would allow any two pumps, either charging pumps or safety injection pumps, or any combination of two pumps with maximum flow to inject into the RCS indefinitely. This represents a deviation from the ISTS. Justify in detail why it is acceptable for two pumps in this configuration to run for a long duration and the impact of this proposed configuration on the peak pressure analyses. Also provide a discussion regarding your analysis and its termination period.

3. WCAP 14040, Revision 2, Methodology Used to Develop Cold Overpressure Mitigating System Setpoints and RCS Heatup and Cooldown Limit Curves, Westinghouse Electric Company, LLC dated January 1996, provides the methodology for pressure transient analyses using pressurizer power operated relief valves (PORVs) only. Describe and justify the method that was used to analyze the residual heat removal (RHR) suction relief valves as pressure relieving devices in this proposal. Identify any conservatism in the pressure transient analyses.

4. Attachment 2, Page 2-10, discusses the PORV and RHR suction relief valves setpoints and the respective peak pressures and pressure-temperature (P/T) limits. In your analyses, if the upper limit is used for the PORV (425 pounds per square inch gauge (psig)) and the RHR suction relief valves (509 psig), what is the impact on the peak pressure calculation? Provide two separate tables identifying the following parameters for the PORV and RHR suction relief valves for heatup and cooldown limiting cases for both units. The tables should reflect the enable temperature range versus the PORV setpoint, the uncertainty, the transient pressure, the peak pressure and P/T limit from the revised P/T curves. Also provide the details of limitations on operation of the reactor

coolant pump when the LTOP system is in service based on the revised heatup and cooldown curves for both Catawba units.

5. The Updated Final Safety Analysis Report Section 5.2.2 provides only a general discussion regarding the LTOP system. It does not provide any information regarding mass input and heat input transient analyses. Provide a detailed discussion of the mass input and heat input transient analyses, including the results of the analyses and the computer code used.

6. Clarify whether the term RCS relief valves in TS 3.4.12 means RHR suction relief valves.

Catawba Nuclear Station cc:

Mr. Gary Gilbert Senior Resident Inspector Regulatory Compliance Manager U.S. Nuclear Regulatory Commission Duke Energy Corporation 4830 Concord Road 4800 Concord Road York, South Carolina 29745 York, South Carolina 29745 Virgil R. Autry, Director Ms. Lisa F. Vaughn Division of Radioactive Waste Management Legal Department (PB05E) Bureau of Land and Waste Management Duke Energy Corporation Department of Health and Environmental 422 South Church Street Control Charlotte, North Carolina 28201-1006 2600 Bull Street Columbia, South Carolina 29201-1708 Anne Cottingham, Esquire Winston and Strawn Mr. C. Jeffrey Thomas 1400 L Street, NW Manager - Nuclear Regulatory Washington, DC 20005 Licensing Duke Energy Corporation North Carolina Municipal Power 526 South Church Street Agency Number 1 Charlotte, North Carolina 28201-1006 1427 Meadowwood Boulevard P. O. Box 29513 Saluda River Electric Raleigh, North Carolina 27626 P. O. Box 929 Laurens, South Carolina 29360 County Manager of York County York County Courthouse Mr. Peter R. Harden, IV York, South Carolina 29745 VP-Customer Relations and Sales Westinghouse Electric Company Piedmont Municipal Power Agency 6000 Fairview Road 121 Village Drive 12th Floor Greer, South Carolina 29651 Charlotte, North Carolina 28210 Ms. Karen E. Long Mr. T. Richard Puryear Assistant Attorney General Owners Group (NCEMC)

North Carolina Department of Justice Duke Energy Corporation P. O. Box 629 4800 Concord Road Raleigh, North Carolina 27602 York, South Carolina 29745 Elaine Wathen, Lead REP Planner Richard M. Fry, Director Division of Emergency Management Division of Radiation Protection 116 West Jones Street North Carolina Department of Raleigh, North Carolina 27603-1335 Environment, Health, and Natural Resources North Carolina Electric Membership 3825 Barrett Drive Corporation Raleigh, North Carolina 27609-7721 P. O. Box 27306 Raleigh, North Carolina 27611