ML20217F573

Forwards Request for Addl Info on Amend Request Re Pressure Temp Limits

ML20217F573
Person / Time
Site:	Catawba
Issue date:	03/26/1998
From:	Tam P NRC (Affiliation Not Assigned)
To:	Gordon Peterson DUKE POWER CO.
References
TAC-M99629, TAC-M99630, NUDOCS 9804010051
Download: ML20217F573 (5)

Text

.... . Mr. G:ry R. P;t:rson Sita Vice Pr:sident Catawba Nuclerr Station March 26, 'l998 Duke Energy Corporation 4800 Concord Road York, South Carolina 29745-9635

SUBJECT:

CATAWBA NUCLEAR STATION - STAFF POSITION AND REQUEST FOR ADDITIONAL INFORMATION ON AMENDMENT REQUEST REGARDING PRESSURE TEMPERATURE LIMITS (TAC NOS. M99629 AND M99630)

Dear Mr. Peterson:

By letter dated September 15,1997, you submitted an amendment request to revise the Technical Specifications on reactor vessel temperature versus pressure limits. By letter dated March 5,1998, you provided additional information in response to the staff's request for additional information (RAl) dated February 6,1998. The staff has reviewed your submittals, and finds that additional information is needed. The staff also takes a position regarding low-temperature overpressure protection as delineated in the enclosed RAl. Consequently, you may respond in accordance with the staff's position, or request an appeal meeting in accordance with NRR Office Letter No. 903. Either way you choose to respond, please do so expeditiously to support the implementation schedule you stated in your March 5,1998, letter.

Sincerely, I

Original signed by Peter S. Tam, Senior Project Manager Project Directorate ll-2 Division of Reactor Projects - 1/II ADO K O 13 P PDR Office of Nuclear Reactor Regulation ,

1 Docket Nos. 50-413 and 50-414

Enclosure:

As stated '

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t j NUCLEAR REGULATORY COMMISSION O WASHINGTON. D.C. 20066-0001 s ..., / March 26,1998 Mr. Gary R. Peterson Site Vice President Catawba Nuclear Station Duke Energy Corporation 4800 Concord Road York, South Carolina 29745-9635

SUBJECT:

CATAWBA NUCLEAR STATION - STAFF POSITION AND REQUEST FOR ADDITIONAL INFORMATION ON AMENDMENT REQUEST REGARDING PRESSURE TEMPERATURE LIMITS (TAC NOS. M99629 AND M99630)

Dear Mr. Peterson:

By letter dated September 15,1997, you submitted an amendment request to revise the Technical Specifications on reactor vessel temperature versus pressure limits. By letter dated March 5,1998, you provided additional information in response to the staff's request for additional information (RAI) dated February 6,1998. The staff has reviewed your submittals, and finds that additionalinformation is needed. The staff also takes a position regarding low-temperature overpressure protection as delineated in the enclosed RAl. Consequently, you may respond in accordance with the staff's position, or request an appeal meeting in accordance with NRR Office Letter No. 903. Either way you choose to respond, please do so expeditiously to support the implementation schedule you stated in your March 5,1998, letter.

Sincerely, 1 -

I M* A  !

Peter . Tam, Senlo Project Manager i Project Directorate ll-2  ;

Division of Reactor Projects - 1/II '

Office of Nuclear Reactor Regulation Docket Nos. 50-413 and 50-414 i

Enclosure:

As stated cc w/ encl: See next page l

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1 l l Catawba Nuclear Station

' cc:

Mr. M. S. Kitlan North Carolina Electric Membership Regulatory Compliance Manager Corporation -

Duke Energy Corporation P. O. Box 27306 4800 Concord Road Raleigh, North Carolina 27611

. York, South Carolina 29745 Senior Resident inspector Mr. Paul R. Newton U.S. Nuclear Regulatory Commission Legal Department (PB05E) 4830 Concord Road Duke Energy Corporation York, South Carolina 29745 422 South Church Street Charlotte, North Carolina 28242 Regional Administrator, Region 11 U. S. Nuclear Regulatory Commission J. Michael McGarry, Ill, Esquire Atlanta Federal Center Winston and Strawn 61 Forsyth Street, S.W., Suite 23T85 1400 L Street, NW Atlanta, Georgia 30303 Washington, DC 20005 Max Batavia, Chief North Carolina Municipal Power Bureau of Radiological Health Agency Number 1 South Carolina Department of 1427 Meadowwood Boulevard Health and Environmental Control P. O. Box 29513 2600 Bull Street Raleigh, North Carolina 27626 Columbia, South Carolina 29201 Mr. Peter R. Harden, IV L. A. Keller Account Sales Manager Manager- Nuclear Regulatory Westinghouse Electric Corporation Licensing Power Systems Field Sales Duke Energy Corporation P. O. Box 7288 526 South Church Street Charlotte, North Carolina 28241 Charlotte, North Carolina 28242-0001 County Manager of York County Saluda River Electric Yort: County Courthouse P. O. Box 929 York, South Carolina 29745 Laurens, South Carolina 29360

' Piedmont Municipal Power Agency Ms. Karen E. Long 121 Village Drive Assistant Attorney General

. Greer, South Carolina 29651 North Carolina Department of Justice P. O. Box 629 Raleigh, North Carolina 27602 Elaine Wathen, Lead REP Planner Division of Emergency Management 116 West Jones Street Raleigh, North Carolina 27603-1335

1 Catawba Nuclear Station cc:

Mr. T. Richard Puryear Owners Group (NCEMC) {

Duke Energy Corporation I I

4800 Concord Road -

York, South Carolina 29745 Richard M. Fry, Director Division of Radiation Protection l

North Carolina Department of '

Environment, Health, and Natural Resources 3825 Barrett Drive )

Raleigh, North Carolina 27609-7721 j l

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Staff Position and Reauest for Additional Information Catawba Nuclear Station. Units 1 and 2 Prooosed Amendment on Pressure Versus Temocrature Limits

1. Regarding restrictions assumed in Duke Energy Corporation's (Duke's) low-temperature overpressure protection (LTOP) analyses, Duke's submittal of September 15,1997, as supplemented by letter dated March 5,1998, did not address such in the Catawba Technical Specifications. These are as follows:

a. Restrictions on accumulator discharge valves.

b. Restrictions on pumps capable of injecting into the reactor coolant system for the entire LTOP range.

c. Lowest temperature justified per LTOP analysis.

It is the staff's position that the proposed amendment cannot be approved unless Duke also proposes LTOP requirements to reflect the above restrictions.

2. Does Duke's analysis depend on restrictions on the number of reactor coolant pumps operable during different temperature ranges 7 if so, it is the staff's position that appropriate requirements must be added to the Technical Specifications.

3. According to Duke's March 5,1998, letter, a boltup temperature of 60 degrees Fahrenheit (60*F) was calculated. However, Duke further stated that "with incorporation of the proposed P/T [ pressure-temperature) curves, there will be a need to require that the minimum temperature during LTOP mode be no lower than 66*F on Unit 1 and 65'F on Unit 2. These numbers are based on the peak pressure from the limiting steady state condition mass addition transient from an NI pump, with no NC pumps running." Do the 66'F and 65'F temperatures discussed account for temperature instrument uncertainties? j

4. Provide a table with the extrapolated values of the pressure temperature limits used for i the LTOP analyses and the value of each term (e.g., overshoot, instrument uncertainty, etc.) used in the calculation of the 400 psig power-operated relief valve lift setpoint.

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