ML20210L532

Forwards List of Subjects Discussed During 990714 Telcon with Representatives of Niagara Mohawk Power Corp on Unit 1 Re USI A-46 Issue

ML20210L532
Person / Time
Site:	Nine Mile Point
Issue date:	08/06/1999
From:	Vissing G NRC (Affiliation Not Assigned)
To:	Mueller J NIAGARA MOHAWK POWER CORP.
References
REF-GTECI-A-46, REF-GTECI-SC, TASK-A-46, TASK-OR TAC-M69461, NUDOCS 9908090158
Download: ML20210L532 (5)

Text

'

Mr. John H. Mu:ll:r Chi:f Nucl: r Offic:r i Ni::girs Moh wk Pow:r Corpor: tion l Nine Mile Point Nuclear Station Operations Building, Second Floor -

Lycoming, NY 13093 l

SUBJECT:

TELEPHONE CONFERENCE CALL OF JULY 14,1999, WITH REPRESENTATIVES OF NIAGARA MOHAWK POWER CORPORATION ON THE NINE MILE POINT NUCLEAR STATION, UNIT NO.1 CONCERNING THE USI A-46 ISSUE (TAC NO. M69461)

Dear Mr. Mueller:

Enclosed are the subjects that were discussed during the call. Your representatives indicated that they could have a response to us by the end of July. The response will include revised pages of previous submittals and definitions of acronyms used in the tables.

Sincerely, Original signed by: l 1

l Guy S. Vissing, Senior Project Manager, Section 1 Project Directorate l Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-220

Enclosure:

As stated cc w/ enc!: See Next page DISTRIBUTION:

DochetFilef PUBLIC S. Bajwa S. Little G. Vissing D. Hood }

OGC )

ACRS M. Oprendek, RGNI /f DOCUMENT NAME: G:\PDI-1\NMP1\LTR69461.wpd 9 ()\

To receive a copy of this document, indicate in the box: "C" - Copy without attachment / enclosure 'E" - Copy with attachment / enclosure *N" - No copy ,

0FFICE PDI-1/PM jj l PDI-1/LA () \/ l PDI-1/SC , M l l NAME GVissing; M g '

SlittlF SBajwa /i/ ~C>l DATE 08/f/99 08/.D /99 08/ h /99 08/ /99 OFFICIAL RECORD COPY 9908090158 990806 PDR ADOCK 05000220 p PDR

E. .

o August 6, 1999 Mr. John H. Muill:r Chi::f Nuclear Officer a

Niagara Mohawk Power Corporation Nine Mile Point Nuclear Station Operations Building, Second Floor Lycoming, NY 13093

SUBJECT:

TELEPHONE CONFERENCE CALL OF JULY 14,1999, WITH REPRESENTATIVES OF NIAGARA MOHAWK POWER CORPORATION ON THE NINE MILE POINT NUCLEAR STATION, UNIT NO.1 CONCERNING THE .

USl A-46 ISSUE (TAC NO. M69461)

Dear Mr. Mueller:

Enclosed are the subjects that were discussed during the call. Your representatives indicated that they could have a response to us by the end of July. The response willinclude revised pages of previous submittals and definitions of acronyms used in the tables.

Sincerely, Original signed by:

Guy S. Vissing, Senior Project Manager, Section 1 Project Directorate i Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-220

Enclosure:

As stated cc w/ encl: See Next page plSTRIBUTION:

Docket File PUBLIC S. Bajwa S. Little G. Vissing D. Hood OGC ACRS M. Oprendek, RGNI DOCUMENT NAME: G:\PDI-1\NMP1\LTR69461.wpd To rec 11ve a copy of this document. indicate in the box: "C" - Copy without attachment /enclosurO "E" - Copy with attachment / enclosure *N" - No copy .

OFFICE PDI-1/PM jj l PDI-1/LA,G\/ l PDI-1/SC , ,jy( l L, NAME GVissing 4 //

SL1ttlf SBajwa M/'D(

DATE 08/ f 99 DB/ O /99 08//g/99 08/ /99 OFFICIAL RECORD COPY

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. f,i :t l'NITED STATrS j j t

NUCLEAR REGULATORY COMMISSION WASHINGTON, D.c. 20555-0001 .

%'*.... p August 6, 1999 I

i i

Mr. John H. Mueller Chief Nuclear Officer Niagara Mohawk Power Corporation Nine Mile Point Nuclear Station Operations Building, Second Floor Lycoming, NY 13093

SUBJECT:

TELEPHONE CONFERENCE CALL OF JULY 14,1999, WITH REPRESENTATIVES OF NIAGARA MCHAWK POWER CORPORATION ON THE NINE MILE POINT NUCLEAR STATION, UNIT NO.1 CONCERNING THE USI A-46 ISSUE (TAC NO. M69461)

Dear Mr. Mueller:

Enclosed are the subjects that were discussed during the call. Your representatives indicated that they could have a response to us by the end of July. The response willinclude revised pages of previous submittals and definitions of acronyms used in the tables.

Sincerely, l Guy S. Vissing, Senio oject Manager, Section 1

. Project Directorate l Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-220

Enclosure:

As stated cc w/ encl: See Next page 1

l l l l l l J

Questions from the July 14.1999. telephone conference with Niaaara Mohawk Power Corporation on the Nine Mile Point Station. Unit 1 (NMP1) USl A-46 oroaram.

1. Is the effective grade for all structures elevation 243 feet?

2. Provide a building specific justification for the use of Method A.1 at the locations where the amplification significantly exceeds the 1.5 limit at frequencies above 8 Hz.

The following questions are about the Screening Verification Data Sheets (SVDS) which are part of the NMP1 USl A-46 Summary Report.

3. Provide a list of abbreviations which you use to specify the seismic capacity and the seismic demands for the equipment listed in the SVDS.

4. On page 1 fine numbers 7140 and 7139, what do the words "yes" in the Capacity l Spectrum and the Demand Spectrum columns mean?

l

5. On pages 2,3, and 4 the Capacity Spectrum is listed as the GERS and the Demand Spectrum is listed as the GRS for numerous equipment items at elevations greater than i 40 feet above the effective grade. Since Table 41 of GlP-2 requires that, for equipment i more than 40 feet above effective grade, the GERS be compared to the Conservative  !

Design in-Structure SSE Response Spectrum or 1.5 times the Realistic Median-l Centered in-Structure SSE Response Spectrum, justify the comparison indicated in the '

SVDS.

6. On page 3 line 6144 you list the Demand Spectrum as BS which is the Bounding Spectrum. The Bounding Spectrum is a seismic capacity, explain why it is listed as a demand. If this entry is a typographical error provide the correct Demand Spectrum name.

7. On page 12 line 7605, you indicate that the equipment elevation is more than 40 above effective grade, but the Seismic Demand to Seismic Capacity comparison used the Bounding Spectrum and the Ground Response Spectrum which GIP-2 only allows for equipment at elevations below 40 feet above effective grade. Explain your use of this comparison.

8. On pages 26,27,35 and 36 lines 6171,6168,6165,6167,8131 and 8132 you use the abbreviation TRS for the Capacity Spectrum and CRS for the Demand Spectrum.

Since, in the telephone conference, you indicated that RRS is the symbol for your in-structure response spectra what is CRS? Also, what is TRS? It is not on the GIP-2 SEWS list of abbreviations.

4 Enclosure

y,; ~;

e Nine Mile Point Nuclear Station Unit No.1 l . Regional Administrator, Region l l U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA ~ 19406 Resident inspector U.S. Nuclear Regulatory Commission l P.O. Box 126 Lycorra ng, NY 13093 Charles Donaldson, Esquire  !

Assistant Attorney General 1

' New York Department of Law 120 Broadway New York, NY 10271 Mr. Paul D.' Eddy State of New York Department of Public Service -

i Power Division, System Operations 3 Empire State Plaza Albany, NY 12223 Mr. F. William Valentino, President ,

New York State Energy, Research,  !

and Development Authority Corporate Plaza West 286 Washington Avenue Extension Albany, NY 12203-6399 Mark J. Wetterhahn, Esquire Winston & Strawn .,

1400 L Street, NW l Washington, DC 20005-3502- I Gary D. Wilson, Esquire Niagara Mohawk Power Corporation

' 300 Erie Boulevard West i Syracuse, NY 13202 i

Supervisor l Town of Scriba l

Route 8, Box 382 i Oswego, NY.' 13126 i l

l i