ML17265A325

Forwards RAI Re Response to GL 97-04, Assurance of Sufficient NPSH for ECC & Containment Heat Removal Pumps,

ML17265A325
Person / Time
Site:	Ginna
Issue date:	06/08/1998
From:	Vissing G NRC (Affiliation Not Assigned)
To:	Mecredy R ROCHESTER GAS & ELECTRIC CORP.
References
GL-97-04, GL-97-4, TAC-M99993, NUDOCS 9806150353
Download: ML17265A325 (9)

Text

dune 8, 1998 Dr. Robert C. Mecredy Vice President, Nuclear Operations Rochester Gas and Electric Corporation 89 East Avenue Rochester, NY 14649

SUBJECT:

REQUEST FOR ADDITIONALINFORMATION(RAI) RELATINGTO RESPONSE TO GENERIC LETTER 97-04 FOR THE R.

E. GINNA NUCLEAR POWER PLANT (TAC NO. M99993)

Dear Dr. Mecredy r

The NRC staff issued Generic Letter 97-04, "Assurance of Sufficient Net Positive Suction Head for Emergency Core Cooling and Containment Heat Removal Pumps" on October 7, 1997.

A The GL requested that licensees provide information necessary to confirm the adequacy of the net,positive suction head available for emergency core cooling and containment heat removal pumps.

By letter dated January 6, 1998, Rochester Gas and Electric Corporation submitted its 90-day response to GL 97-04. The staff has reviewed your response and has determined that additional information is necessary.

Please provide the information in the enclosed request within 30 days from the date of this letter. Should you have any questions, please contact me at 301-415-1441.

Docket No. 50-244

Enclosure:

Request for Additional Information ccw/encl:

See next page Sincerely, Or iginal Signed bv:

Guy S. Vissing, Senior Project Manager Project Directorate I-1 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation DISTRIBUTION:

rD-ocket/ile.d J. Kudrick, NRR PUBLIC K. Kavanagh, NRR PDI-1 Reading File R. Caruso J. Zwolinski (A)

C. Hehl, Regional I

S. Bajwa OGC G. Vissing ACRS S. Little DOCUMENT'AME:G:>GINNA>M99993.RAI To receive a copy ofthis document, indicate in the box: "C" = Copy without enclosures "E" = Co with enclosures "N" = No copy

~e s ~~'i4 OFFICE PH: PDI -1 LA:PDI-SR NRR SCSB:

R D: PDI-1 NAME GVissing:1cc SLjtt JKudri SBajwa DATE 4J < /

9806150353 980608 PDR ADOCK 05000244 P

PDR 5/4 I/9t OFFICIAL RECORD COP

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3une 8, 1998 Dr. Robert C. Mecredy Vice PresidentNuclear Operations Rochester Gas and Electric Corporation 89 East Avenue Rochester, NY 14649

SUBJECT:

REQUEST FOR ADDITIONAL'NFORMATION(RAI) RELATINGTO RESPONSE TO GENERIC LETTER 97-04 FOR THE R.

E. GINNA NUCLEAR POWER PLANT (TAC NO. M99993)

'ear Dr. Mecredy:

The NRC staff issued Generic Letter 97-04, "Assurance of Sufficient Net Positive Suction Head for Emergency Core Cooling and Containment Heat Removal Pumps" on October 7, 1997.

The GL requested that licensees provide information necessary to confirm the adequacy of the net positive suction head available for emergency core cooling and containment heat removal pumps.

By letter dated January 6, 1998, Rochester Gas and Electric Corporation submitted its 90-day response to GL 97-04. The staff has reviewed your response and has determined that additional information is necessary.

Plea'se provide the information in the enclosed request within 30 days from the date of this letter. Should you have any questions, please contact me at

\\

301-415-1441.

Docket No. 50-244

Enclosure:

Request for Additional Information cc w/encl: See next page Sincerely,

, Original Signed bY:

Guy S. Vissing, Senior Project Manager Project Directorate l-1 Division of Reactor Projects - I/II

'Office of Nuclear Reactor Regulation DISTRIBUTION:

DocketFile, J. Kudrick, NRR PUBLIC K. Kavanagh, NRR PDI-1 Reading File R. Caruso J. Zwolinski (A)

C. Hehl, Regional I

S. Bajwa OGC G. Vissing ACRS S. Little DOCUMENT NAME: G:>GINNAFM99993.RAI To receive a copy ofthis document, indicate in the box: "C" ~ Copy without enclosures "E" = Co with enclosures "N""- No copy OFFICE PH: PDI-1 Gttissing:lcc DATE g/ it- /

LA PDI-SR NRR SLitt 5/4 I/'3V OFFICIAL RECORD COPY SCSB:

R JKudt'1 D: PDI-1 SBajwa

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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 3une 8, 1998 Dr. Robert C. Mecredy

" Vice President, Nuclear Operations Rochester Gas and Electric Corporation 89 East Avenue Rochester, NY 14649

SUBJECT:

REQUEST FOR ADDITIONALINFORMATION(RAI) RELATINGTO RESPONSE TO GENERIC LETTER 97-04 FOR THE R.

E. GINNA NUCLEAR POWER PLANT (TAC NO. M99993)

Dear Dr. Mecredy:

The NRC staff issued Generic Letter 97-04, "Assurance of Sufficient Net Positive Suction Head for Emergency Core Cooling and Containment Heat Removal Pumps" on October 7, 1997.

I The GL requested that licensees provide information necessary to confirm the adequacy of the net positive suction head available for emergency core cooling and containment heat removal pumps.

By letter dated Januaiy 6, 1998, Rochester Gas and Electric Corporation submitted its 90-day response to GL 97-04. The staff has reviewed your response and has determined that additional information is necessary.

Please provide the information in the enclosed request within 30 days from the date of this letter. Should you have any questions, please contact me at 301-415-1441.

Sincerely, Docket No. 50-244 Guy S. Vissing, Senior oject Manager Project Directorate I-1 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation

Enclosure:

Request for Additional Information ccw/encl: See next page

t'J g

i'

Dr. Robert C. Mecredy Rochester Gas and Electric Company R.E. Ginna Nuclear Power Plant Peter D. Diysdale, Sr. Resident Inspector R.E. Ginna Plant U.S. Nuclear Regulatory Commission 1503 Lake Road Ontario, NY 14519 Regional Administrator, Region I

U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406 Mr. F. William Valentino, President New York State Energy, Research, and Development Authority Corporate Plaza West 286 Washington Avenue Extension Albany, NY 12203-6399 Charles Donaldson, Esquire Assistant Attorney General New York Department of Lalw 120 Broadway New York, NY 10271 Nicholas S.

Reynolds Winston 8 Strawn 1400 S Street N.W.

Washington, DC 20005-3502 Ms. Thelma Wideman, Director Wayne County Emergency Management Office Wayne County Emergency Operations Center 7336 Route 31 Lyons, NY 14489 Ms. Mary Louise Meisenzahl Administrator, Monroe County Office of Emergency Preparedness 111 West Falls Road, Room 11 Rochester, NY 14620 Mr. Paul Eddy New York State Department of Public Service 3 Empire State Plaza, 10th Floor Albany, NY 12223

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REQUEST FOR ADDITIONALINFORMATION RELATEDTHE RESPONSE TO GENERIC LETTER 97-04 FOR THE R. E. GINNA NUCLEAR POWER PLANT DOCKET NO. 50-244

1. What is the maximum sump temperature assumed in the NPSH analyses' 2.

In response to question 5, it is stated that "although containment overpressure is not credited, a review of containment pressure and temperature versus time curves indicates that containment'verpressure would exist at the beginning of Sump 'B'ecirculation.

Since Ginna Station was licensed prior to the publication of Regulatory Guide 1.1, and has never committed to use that guide, containment overpressure could be credited to add margin to the NPSH calculations.

RG8 E at this time has not chosen to do so."

It is the staff's position that whether or not a licensee is committed to RG 1.1, NRC staff review and approval should be obtained before a licensee can credit containment overpressure in their NPSH calculations.

Additionally, it appears to the staff that the containment pressure and temperature curves discussed in the Generic Letter response are the peak containment pressure curves and not the minimum containment pressure curves.

Only minimum containment pressur'e curves should be used to determine ifcontainment overpressure exists.

Which pressure curves were used in the GL response7 Enclosure

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