L-87-217, Responds to Generic Ltr 87-02, Verification of Seismic Adequacy of Mechanical & Electrical Equipment in Operating Reactors, NUREG-1030 & NUREG-1121.Updated Response Will Be Submitted by 871001
| ML17347A483 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie, Turkey Point, 05000000 |
| Issue date: | 05/15/1987 |
| From: | Woody C FLORIDA POWER & LIGHT CO. |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| REF-GTECI-A-46, REF-GTECI-SC, RTR-NUREG-1030, RTR-NUREG-1121, TASK-A-46, TASK-OR GL-87-02, GL-87-2, L-87-217, NUDOCS 8705210604 | |
| Download: ML17347A483 (6) | |
Text
ACCESSION NBR:
FAC IL:50-000 50-250 50-251 50-335 AUTH. MANE NOODYi C. O.
RECIP. NAME REGULATORY ORNATION DISTRIBUTION SY
") (R IDS) 8705210b04 DOC. DATE: 87/05/15 NOTARIZED:
NO DOCKET ¹ Qeneric Docket 05000000 Turkey Point Plant>
Unit 3I Florida Power and Light C 05000250 Turkey Point Planti Unit 4i Florida Potoer and Light C
05000251 St.
Lucie Plant>
Unit ii Florida Potuer Cc Light Co.
05000335 AUTHOR AFFILIATION Florida Power 8< Light Co.
RECIPIENT AFFILIATION Document Control Branch'Document Control Desk)
SUBJECT:
Responds to Generic Ltr 87-02) "Verification of Sei smic Adequacu of Mechanical Zc Electrical Equipment" in Operating Reactor st NUREQ 1030 St NUREG 1 121. Updated response xilI be submitted bg 871001.
DISTRIBUTION CODE:
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TITLE: OR/Licensing Submittal:
Equipment Qualification NOTES:
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1 5 1SB I L-87-217 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555 Gentlemen:
Re:
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 St. Lucie Unit 1 Docket No. 50-335 Verification of Seismic Adequacy of Mechanical and Electrical E ui ment in 0 eratin Reactors (Generic Letter 87-02)
Plorida Power 6 Light Company (PPL) has reviewed Generic Letter 87-02 (GL 87-02) with NUREGs 1030 and 1211.
This letter provides the response requested in the generic letter.
A copy of the generic letter was received by the Nuclear Licensing Department of PPL'n April3, 1987.
It has been generally acknowledged that FPL's Turkey Point and St. Lucie sites are located in an area of low seismic hazard.
Recent industry and FPL studies using current data together with probabilistic analytical techniques have indicated that the seismic hazard at the Turkey Point and St. Lucie sites is even lower than previously considered and that at an acceptable level of risk, the values of the seismic forces associated with the Safe Shutdown Earthquake (SSE), are significantly below the values being used currently for design analysis, thus providing inherent seismic margin.
Prom an economic perspective, a preliminary review of the costs and benefits associated with the proposed resolution of Unresolved Safety Issue (USI) A-46, as applied to Turkey Point Units 3 and 4, and St. Lucie 1,has indicated that the benefits appear to be less than those identified by the generic backfit analysis in NUREG 1211.
A number of issues involving seismicity are presently being addressed by the NRC and the utility industry, (e.g., Eastern USA Seismicity studies, Decay Heat Removal studies and Seismic Margins studies), with proposed revisions to 10CPR100 Appendix A.
To assure consistency, FPL would like to address A-46 within the context of these other issues.
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U.S. Nuclear Regulatory Commission L-87-217 Page 2
It is anticipated that the final reports by EPRI on Eastern USA Seismicity and by Sandia on Decay Heat Removal will be issued in the next few months.
At that time, FPL proposes to use this and other applicable data to document FPL's position for staff review to demonstrate the very low seismic hazard and the existence of seismic margin at the Turkey Point and St. Lucie sites and to assure the NRC that the concerns expressed in USI A-46 do not apply to Turkey Point Units 3 and 4 and St. Lucie Unit 1.
'IUe will provide an update on this response by October 1, 1987.
Considering the low seismic hazard at FPL's Turkey Point and St. Lucie sites, this time frame is warranted.
Very truly yours,
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C. O. IVoody Group Vice President Nuclear Energy COIV/JRL/cn I/011 cc:
Dr. J. Nelson Grace, Regional Administrator, Region II, USNRC Senior Resident Inspector, USNRC, Turkey Point Plant Senior Resident Inspector, USNRC, St. Lucie Plant
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