3F0194-02, Clarifies Licensees Position on Use of Floor Response Spectra at Unit 3 for Resolution of USI A-46

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Clarifies Licensees Position on Use of Floor Response Spectra at Unit 3 for Resolution of USI A-46
ML20062N751
Person / Time
Site: Crystal River Duke Energy icon.png
Issue date: 01/07/1994
From: Beard P
FLORIDA POWER CORP.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
REF-GTECI-A-46, REF-GTECI-SC, TASK-046, TASK-46, TASK-OR 3F0194-02, 3F194-2, GL-87-02, GL-87-2, TAC-M69440, NUDOCS 9401210053
Download: ML20062N751 (2)


Text

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Florida Power CORPORATION

U. S. Nuclear Regulatory Commission <

Attn: Document Cor, trol Desk Washington DC 20555

Subject:

Evaluation of Methods for Developing Floor Response Spectra for the Resolution of Unresolved Safety Issue (USI) A-46 (TAC M69440)

References:

1. NRC to FPC letter, 3N1293-27, dated December 16, 1993
2. FPC to NRC letter, 3F0992-02, dated September 4, 1992
3. FPC to NRC letter, 3F0493-09, dated April 16, 1993
4. FPC to NRC letter, 3F0893-12, dated August 27, 1993

Dear Sir:

Florida Power Corporation (FPC) has reviewed the Safety Evaluation Report (SER)

(Reference 1) prepared by the NRC Staff on the floor response spectra to be used -

for the resolution of USI A-46. We are pleased the Staff found the spectra acceptable; however, FPC is submitting this letter to clarify our position on the use of the floor response spectra at Crystal River Unit 3 (CR-3).  ;

The cover letter and SER both point out that "[t]his conclusion is based on the assumption that the subsequent verification of the equipment and anchorages will be in accordance with Supplement I to Generic Letter 87-02." That supplement was a cover letter for the SER on Revision 2 of the Generic Implementation Procedure (GIP) produced by the Seismic Qualification Utility Group (SQUG). The letter requested utilities to commit to perform plant walkdowns in accordance with the ,

GIP.

As noted in FPC's initial response to Generic Letter 87-02, Supplement 1 (Reference 2) and subsequent status update (Reference 3)', FPC plans to walk down CR 3 in accordance with a olant specific procedure based on the GIP. This procedure and supporting documentation has been submitted to the NRC_(Reference 4), in most cases the plant specific procedure is equivalent to the GIP for a low seismic risk plant like CR-3 in that it provides a comparable safety enhancement as would be achieved through use of the GIP at a higher seismic risk site. This fact is supported by the documentation which accompanied Reference 4.

CRYSTAL RIVcR ENERGY COMPLEX: 15700 W Power Line St . Crystal River, Florida 34428-6708 . (904) 795-6486 g

A horida Progress Company

PDR9401210053 940107 G P

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U.-S. Nuclear Regulatory Commission-3f0194 Page.2 i

Because of that equivalency, the floor response spectra upon which the Staff .j based the subject SER are equally applicable to the plant specific procedure for i CR-3 as they are to the GIP.  !

Sincerely, .

! k -ct<.-es)')

P. M. , Beard, Jr. l Senior Vice President Nuclear Operations 1

PMB/AEF:

xc: Regional Administrator, Region 11  :

NRR Project' Manager 1 Senior Resident Inspector >

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