ML20245A469

Requests Listed Addl Info Re Proposed Amends to Revise Pressure & Temp Limits in Tech Spec 3/4.4.9 for Heatup & Cooldown of RCS Based on Review of 890222 Submittal

ML20245A469
Person / Time
Site:	McGuire, Mcguire
Issue date:	04/17/1989
From:	Hood D Office of Nuclear Reactor Regulation
To:	Tucker H DUKE POWER CO.
References
GL-88-11, TAC-71963, TAC-71964, NUDOCS 8904250218
Download: ML20245A469 (3)

Text

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i. . #^o UNITED STATES

- o' NUCLEAR REGULATORY COMMISSION  !

5 E WASHINGTON, D. C. 20666

%**..+/ April 17, 1989 Jocket Nos~. : 50-369 50-370 l Mr. H. B. Tucker, Vice President Nuclear Production Department Duke Power Company 422 South Church Street Charlotte, North Carolin6 28242

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION REGARDING REVISED VESSEL PRESSURE - TEMPERATURE LIMITS, MCGUIRE NUCLEAR STATION, UNITS 1 AND 2 (TACs 71963/71964)

By letter of January 22, 1989, you proposed license amendments to revise pressure and temperature limits in McGuire Technical Specification (TS) 3/4.4.9 for heatup and cooldown of the reactor coolant system. We are reviewing this proposed amendment request and find the following additional information is needed:

(1) You propose to add to TS 3.4.9.1 references to five figures, including Figure 3.4-6. Provide the proposed Figure 3.4-6.

(2) Why was Revision 2 to Regulatory Guide 1.99 not used as the basis for the Unit 2 limits and curves of proposed Figures 3.4-3 and 3.4-5 in accordance with NRC Generic Letter 88-117 Also, discuss the basis for your November 21, 1988 conclusion that "due to the design of the [ Unit 2]

vessel, the limits being. proposed based on Revision 1 are in fact cor,servative with respect to those that would have been generated had Revision 2 been, utilized."

(3) You state tnat the new curves for the proposed TS do not contuin tNr 10 F and 60 PSIG margus for possible instrument errors showr. in Westinghouse curves because ' approved station procecures" will ba used to account fer the applicable instrument error. Identify these appoved station procedures and summarize how they account for instrument erro r.

(4) Comparison of existing TS 3.4.9.1.b. with proposed Figure 3.4-4 shows that the maximum cooldown rate for Unit 1 would be changed from its present i limit of 100*F per hour to 50 F per hour. To what extent would this slower

cooldown affect station radiological releases for events such as those controlled by Abnormal Operating Procedure AP/1/A/5500/10 "NC System Leakage Within the Capacity of Both NV Pumps"?

8904250218 890417 PDR P

ADOCK 03000369 PDC hpk

A Mr. H. B.. Tu cker - '

To meet your requested review completion'date'of mid-1989, response to the above

'is needed within 30 days of receipt of this letter. Contact me at

-(301)'492-1442 if you have. questions.

I The recording and/or recordkeeping requirements contained in this letter affect fewer than 10 respondents; therefore, OMB clearance is not required under P. L.96-511.

Sincerely, Orignial Signed By:

i Darl S. Hood, Project Manager Project Directorate 11-3 Division of Reactor Projects -I/II Office of Nuclear Reactor Regulation cc: See next page DISTRIBUTION

' Docket

• File +-

NRC PDR Local PDR PDII-3 Reading i S. Varga 14-E-4 G. Lainas 14-H-3 D. Matthews 14-H-25 M.-Rood 14-H-26 D. Hood 14-H-25 OGC (for inform. Only) 15-B-18 E. Jordan MNBB-3302 B. Grimes 9-A-2 pff[

W. Hodges 8-E-23 CY Chan I ACRS (10) P-315 /l MCGUIRE' PLANT FILE NM

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LMr. H. Bl Tucker- l Duke Power Company McGuire Nuclear Station  !

cc:

Mr. A.V. Carr, Esq. Dr. John M. Barry Duke Power Company Department of Environmental Health P. O. Box 33189 Mecklenburg County 422 South Church Street 1200 Blythe Boulevard i Charlotte, North Carolina 28242 Charlotte, North Carolina 28203 I County Manager of Mecklenburg County Mr. ' Dayne H. Brown, Chief 720 East Fourth Street Radiation Protection Branch Charlotte, North Carolina 28202 Division of Facility Services Department of Human Resources 701 Barbour Drive Mr. J. S. Warren Raleigh, North Carolina 27603-2008 Du ke Power Company Nuclear Production Department Mr. Alan R. Herdt, Chief P. O. Box 33189 Project Branch #3 Charlotte, North Carolina 28242 U.S. Nuclear Regulatory Commission 101 Marietta Street, NW, Suite 2900 J.- Michael McGarry, III, Esq. Atlanta, Georgia 30323 Bishop, Liberman, Cook, Purcell and Reynolds 1400 L Street, N.W.

Washington, D. C. 20005 Senior Resident Inspector c/o U.S. Nuclear Regulatory Commission Route 4, Box 529 Hunterville, North Carolina 28078 Regional Administrator, Region II U.S. Nuclear Regulatory Commission 101 Marietta Street, N.W., Suite 2900 Atlanta, Georgia 30323 S. S. Kilborn Area Manager, Mid-South Area ESSD Projects Westinghouse Electric Corporation >

MNC West Tower - Bay 239 P. O. Box 355 Pittsburgh, Pennsylvania 15230 I

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