ML20203A370

Forwards RAI on Amend Request Re Pressure Temp Limits. Response Requested within 30 Days of Ltr Receipt

ML20203A370
Person / Time
Site:	Catawba
Issue date:	02/06/1998
From:	Tam P NRC (Affiliation Not Assigned)
To:	Gordon Peterson DUKE POWER CO.
References
TAC-M99629, TAC-M99630, NUDOCS 9802240014
Download: ML20203A370 (5)

Text

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Mr. Gary R. Peterson February 6, 1998 Site Vice President Catawba Nuclear Station Duke Energy Corporation 4800 Concord Road York, South Carolina 29745-9635

SUBJECT:

CATAWBA NUCLEAR STATION - 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, Duke Energy Corporation submitted an amendment request to revise the Technical Specifications on reactor vessel temperature versus pressure limits. The staff has reviewed your submittal, and found that the enclosed request for additional information (RAl) is needed to complete the review. Please provide your response within 30 days of rect;ipt of this letter. Contact me at 301-415-1451 if you t. ave any questions regarding this RAl.

Sincerely, ORIGINAL SIGNED. BY:

Peter S. Tam, Senior Project Manager Project Directorate 112 Division of Reactor Projects - 1/11 Office of Nuclear Reactor Regulation Docket Nos. 50-413 and 50-414 l\\

Enclosure:

As stated

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,k Febr nry 6, 1998 Mr. Gary R. Peterson Site Vice President Catic.vb1 Nuclear Station Duke Energy Corporation 4800 Concord Road York, South Carolina 29745 9635

SUBJECT:

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

Dear Mr. Peterson:

By letter dated S3ptember 15,1997, Duke Energy Corporation submitted an amendment request to revise the Technical Specifications on reactor vessel temperature versus pressure limits. The staff has reviewed your submittal, and fo.and that the enclosed request for additional information (RAl) is needed to complete the review. Please provide your response within 30 days of receipt of this letter. Contact me at 301-4151451 if you have any questions regarding this RAl.

Sincerely, W

Peter S. Tam, Senior Project Manager Project Directorate 112 Division of Reactor Projects - 1/11 Office of Nuclear Reactor Regulation Docket Nos. 50-413 and 50-414

Enclosure:

As stated cc w/ encl: See next page

Catawba Nuclear Station North Carolina Electric Membership Corporation P. O. Box 27306 cc:

Raleigh, North Carolina 27611 Mr. M. S. Kitlan l

Regulatory Compliance Marsager Senior Resident inspector Duke Energy Corporation U.S. Nuclear Regdatory Commission 4800 Concord Road 4830 Concord Road York, South Carolina 29745 York, South Carolina 29745 Mr. Paul R. Newton Regional Administrator, Region 11 Legal Department (PB05E)

U. S. Nuclear Regulatory Commission l

Duke Energy Corporation Atlanta Federal Center l

422 South Church Street 61 Forsyth Street, S.W., Suite 23T85 Charlotte, North Carolina 28242 Atlanta, Georgia 30303 J. Michael McGarry, Ill, Esquire Max Batavia, Chief Winston and Strawn Bureau ot' Radiological Health 1400 L Street, NW South Carolina Department of Washington, DC 20005 Health and Environmental Control 2600 Bull Street North Carolina Municipal Power Columbia, South Carolina 29201 Agency Number 1 1427 Meadowwood Boulevard L A. Keller P. O. Box 29513 Manager-Nuclear Regulatory Raleigh, North Carolina 27626 Licensing Duke Energy Corporation Mr. Peter R. Harden, IV 526 South Church Street Account Sales Manager Chariotte, North Carolina 28242-0001 Westinghouse Electric Corporation -

Power Systems Field Sales Saluda River Electric P. O. Box 7288 P. O. Box 929 Charlotte, North Carolina 28241 Laurens, South Ca olina 29360 County Manager of York County Ms. Karen E.- Long York County Courthouse Assistant Attomey General York, South Carolina 29745 North Carolina Department of Justice P. O. Box 629 Piedmont Municipal Power Agency Raleigh, North Carolina 27602 121 Village Drive Greer, South Carolina 29651 Elaine Wathen, Lead REP Planner Civision of Emergency Management 116 West Jones Street Raleigh, North Carol;na 276031335 m-

Ca'awba Nuclear Station cc:

Mr. T. Richard Puryear Owners Group (NCEMC)

Duke Energy Corporation i

4800 Concord Road York, South Carolina 29745 Richard M. Fry, Director Division of Radiation Protection North Carolina Department of Environmen'., ilealth, and Natural Resources 3825 Barrett Drive Raleigh, North Carolina 27609-7721 4

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

Your current Technical Specifications (TS) allow one safety injection pump and one centrifugal charging pump to be operable in Modes 4,5, end 6 with the reactor vessel head installed. Your LTOP analyses accounts for injection from a single safety injection pump. This is non conservative from an LTOP perspective since you can potentially have injection from both ths safety injection pump and the charging pump. Provide analyses consistent with the current TS, orjwtify the discrepancy. In addition, identify your current TS restrictions on accumulator discharge valves and reactor coolant pump operation with respect to LTOPS.

2.

On Page 4 of Attachment 3, you proposed to relocate the instrument uncertainty margins from the Catawba Technical Specifications to licensee-controlled procedures, it is the i

staff's position that Technical Specification set points (specifically the LTOP set points for I

this case) must include instrument uncertainues. Please account for instrument uncertainty and provide a calculation of the set points identifying all of the separate components pressure / temperature (P/T) limit, analytical lift set point, overshoot, etc.

3.

Provide an evaluation / analysis of the adequacy of the required vent area of 4.5 square inches (TS 4.4.9.3) with the new P/T limits.

4.

On Page 3 of Attachment 3, you stated "This evaluation demonstrated that the 285 'F enable temperature used for both units remains conservative relative to the RTum + 90 'F enable tcmperature." The enable temperature should account for temperature instrument uncertainty and the temperature difference ' ' the inside wall of the vessel to the quarter thickness location. Provide a calculatn.. Se enable temperature, for each unit, which accounts for these effects.

5.

Provide your LTOP analyses or a summary of the LTOP analyses, and the LTOP methodology for staff review.

6.

Provide and justify your minimum temperature for boltup/ pressurization with respect to LTOP (i.e., show that the low end temperature at which the system can potentially pressurize is covered by your LTOP analyses). This must also account for instrument uncertainty.

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