ML17348B439
| ML17348B439 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point, Saint Lucie  |
| Issue date: | 03/18/1992 |
| From: | Raghavan L Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| GL-87-02, GL-87-2, NUDOCS 9203260330 | |
| Download: ML17348B439 (10) | |
Text
March 18 19
'ocket Nos.
50-335, 50-250 and 50-251 DISTRIBUTION:
See next page LICENSEE: Florida Power and Light Company (FPL)
FACILITY: St.
Lucie Unit 1 and Turkey Point Units 3 and 4
SUBJECT:
SUMMARY
OF A MEETING BETWEEN FPL AND NRC STAFF On February 27,
- 1992, a meeting was held at the NRC Rockville offices between FPL and NRC staff to discuss seismic adequacy verification of equipment at the St.
Lucie Plant, Unit 1 and Turkey Point Plant, Units 3 and 4 (Generic Letter 87-02, "Verification of Seismic Adequacy of Mechanical and Electrical Equipment in Operating Reactors, Unresolved Safety Issue A-46").
During the
- meeting, FPL staff answered questions regarding its proprietary seismic program and submitted additional proprietary information to augment its submittal.
As a result of the meeting, the NRC staff identified additional information it needs to continue its review (see Enclosure 1).
The licensee was requested to promptly furnish a schedule for submitting the responses.
A list of those in attendance is provided as Enclosure 2.
/s/
L. Raghavan, Acting Project Manager Project Directorate II-2 Division of Reactor Projects I/II Office of Nuclear Reactor Regulation
Enclosures:
As stated cc w/enclosures:
See next page
/s/
Jan A. Norris, Sr. Project Manager Project Directorate II-2 Division of Reactor Projects I/II Office of Nuclear Reactor Regulation OFFICE HNIE DATE LA'P 22 D
92 2
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(< 92 A PH:PD22 LRa havan
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/ +/92 OFFICIAL CO D COPY FILENAME: FPLHTS.HTS 9203260330 920318 PDR ADOCK 05000250 P
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Florida Power and Light Company CC:
Jack Shreve, Public Counsel Office of the Public Counsel c/o The Florida Legislature 111 West Madison Avenue, Room 812 Tallahassee, Florida 32399-1400 Senior Resident Inspector St.
Lucie Plant U.S. Nuclear Regulatory Commission 7585 S.
Hwy AIA Jensen
- Beach, Florida 33457 Mr. Robert G. Nave, Director Emergency Management Department of Community Affairs 2740 Centerview Drive Tallahassee, Florida 32399-2100 Harold F. Reis, Esq.
Newman 8, Holtzinger 1615 L Street, N.W.
Washington, DC 20036 John T. Butler, Esq.
- Steel, Hector and Davis 4000 Southeast Financial Center Miami, Florida 33131-2398 Administrator Department of Environmental Regulation Power Plant Siting Section State of Florida 2600 Blair Stone Road Tallahassee, Florida 32301 Mr. James V. Chisolm, County Administrator St. Lucie County 2300 Virginia Avenue Fort Pierce, Florida 34982 Mr. Charles B. Brinkman, Manager Washington Nuclear Operations ABB Combustion Engineering, Nuclear Power 12300 Twinbrook Parkway, Suite 330 Rockville, Maryland 20852 Plant Manager Turkey Point Nuclear Plant Florida Power and Light Company P.O.
Box 029100 Miami, Florida 33102 Mr. Jacob Daniel Nash Office of Radiation Control Department of Health and Rehabilitative Services 1317 Winewood Blvd.
Tallahassee, Florida 32399-0700 Regional Administrator, RII U.S. Nuclear Regulatory Commission 101 Marietta Street N.W., Suite 2900 Atlanta, Georgia 30323 Mr. R.
E. Grazio Director, Nuclear Licensing Florida Power and Light Company P.O.
Box 14000 Juno
- Beach, Florida 33408-0420 Mr. J.
H. Goldberg President Nuclear Division Florida Power and Light Company P.O.
Box 14000 Juno
- Beach, Florida 33408-0420 Harold F. Reis, Esq.'ewman and Holtzinger, P.C.
1615 L Street, N.W.
Washington, DC 20036 Mr. Thomas F. Plunkett, Site Vice President Turkey Point Nuclear Plant Florida Power and Light Company P.O.
Box 029100 Miami, Florida 33102 Senior Resident Inspector Turkey Point Nuclear Generating Station U.S. Nuclear Regulatory Commission P.O.
Box 1448 Homestead, Florida 33090 Attorney General Department of Legal Affairs The Capitol Tallahassee, Florida 32304
. Joaquin Avino, Cty. Manager of Metro.
Dade County 111 NW 1st Street, 29th Floor Miami, Florida 33128
ENCLOSURE 1
REQUEST FOR ADDITIONAL INFORMATION GL 87-02 states that each licensee should identify equipment necessary to bring the plant to a hot shutdown condition and maintain it there for a minimum of 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.
List all systems by safety function.
Walk through the system success path and list all mechanical and electrical equipment, monitoring instrumentation, control equipment and power sources.
In your success path for each
- system, identify equipment, instrumentation or control equipment which may not require seismic qualification but may be necessary to achieve and maintain safe shutdown.
Verify that such equipment will function during and after a safe shutdown earthquake (SSE).
Describe in detail the safe shutdown path procedures.
Confirm that plant operators will be trained in the use of existing normal shutdown procedures or symptom-based Emergency Operating Procedures (EOPs) which will consider scenarios that include the potential loss of the required equipment during and after an SSE.
This will ensure that the shutdown path selected for USI A-46 (and equipment included in the safe shutdown equipment list) is a legitimate safe-shutdown path consistent with plant procedures and operator training.
GL 87-02 states that each licensee must show practical means of staying at hot shutdown for a minimum of 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.
Justify 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> hot shutdown requirement for each one of your plants.
GL 87-02 also states that if safe shutdown is dependent on a single (not redundant) component whose failure, either due to seismic loads or random failure, would preclude decay heat removal by the identified means, the licensee must show that at least one practical alternative for achieving and maintaining safe shutdown exists that is not dependent on that component.
Explain how this requirement is met for St. Lucie Unit 1
and Turkey Point Units 3 and 4.
List the equipment and the equipment categories, including those inside containment, excluded from the equipment required for safe shutdown in the event of an SSE for each of the USI A-46 plants.
Provide a detailed technical justification for the exclusions, unless the equipment was excluded in accordance with GL 87-02.
Since the Senior Seismic Reviews and Advisory Panel (SSRAP) report does not provide the detailed descriptions of equipment's experience data
- base, provide the criteria and procedures or references to show that the equipment at St.
Lucie Unit 1
and Turkey Point Units 3 and 4, within the scope of USI A-46, is within the experience data base.
FPL response dated February 27, 1991 concerning relay evaluation is not acceptable to the staff.
FPL should submit a relay evaluation program which provides criteria and procedures for verifying the seismic
I
functionality of relays necessary for safe shutdown during and after SSE for each USI A-46 plant.
Note that relay malfunction (e.g. chatter) refers to chatter or inadvertent change of state of relays, contactors, motor starters and switches.
In addition to the guidance given in GL 87-02, the staff notes the following:
A.
B.
For the safe shutdown train and necessary support
- system, FPL can use one of the following three methods to resolve the relay issue:
(I) qualify the relays to current standards, (2) use methodology and data generated by the Seismic gualification Utility Group (SHRUG),
(3) propose a methodology which specifically demonstrates that the relays required for safe shutdown will properly perform its intended function during and after the SSE.
The seismic capacity of relays must envelop the seismic demand at the relay location.
If the operator action for actuating systems is claimed as an alternative, it must be demonstrated to be of a reasonable, limited scope and the design, including the circuitry, needs to be reviewed to assure that the operator action can be accomplished given the relay malfunction.
This includes systems which may have latch-in, lock-out or resettable timer requirements.
8.
Provide the bases for developing floor response spectra used to verify the seismic adequacy of the A-46 equipment at St. Lucie Unit I and at Turkey Point Units 3 and 4.
They should include the following:
a
~
b.
C.
d.
e.f.
g.
h.
1.
Design ground, response spectra (i.e.,
SSE)
Enveloping time-histories Consideration of three components of an earthquake Structural modeling Hethod of dynamic analysis Examples of floor response spectra at higher elevations Spectra broadening criteria Hethod of combining equipment responses If experience or test data were used, provide capacity curves used.
If any of the information is provided in the UFSAR or other docketed documents, please provide the specific retrieval references.
9.
Provide information on the seismic adequacy of the above-ground steel tanks (related to USI A-46).
In general, provide the criteria used for computing the hydrodynamic forces on the tank, shell stress acceptance
- criteria, and method of verifying the adequacy of the anchorages.
If a ring-foundation is used under any of the tanks, provide the method of verifying its adequacy.
10.
Provide the basis for not evaluating the seismic adequacy of the degraded walls of the intake structure at Turkey Point in resolution of USI A-46.
11.
For equipment anchorage criteria, if FPL intends to commit to the Volume 1 of EPRI NP-5228, Revision 1, dated June
- 1991, submit for staff review any exceptions or deviations from that report.
12.
Since ACI 349, Appendix B has not been approved by the staff, FPL should delete any reference to that report in its submittal on anchorage criteria.
ENCLOSURE 2
FPL MEETING REGARDING A-46 ISSUE ATTENDANCE LIST NAME R. Auluck G.
Thomas R. Gil J.
R.
Luke R.
P.
Kennedy R.
H. Kenneally J.
W.
Reed J.
Chen J.
Stevenson G.
Schwenk S.
Khoury K. Lord E. J.
Weinkam G.
R, Madden M. A. Caruso K. 0, Desai L. Raghavan P.
Y, Chen J.
Norberg K. Hanoly H. Ashar D.
C. Jeng J.
S.
Ha J.
A. Norris R.
E. Grazio ORGANIZATION NRC/NRR Stevenson
& Assoc.
FPL FPL Structure Mechanics Consult.
NRC/RES Jack R. Benjamin
& Assoc.
NRC/RES/SAIB SA/FPL Consult.
NRC/NRR/SRXB Ebasco Services Inc.
(FP&L)
University of Florida/FPL FPL/Licensing/Turkey Point FPL/Licensing/St.
Lucie NRC/SRXB NRC/SRXB NRC/NRR/PDII-2 NRC/NRR/EMEB NRC/NRR/EHEB NRC/NRR/EHEB NRC/NRR/ESGB NRC/NRR/ESGB NRC/NRR/ESGB NRC/NRR/PD II-2 FPL/Director, Nuclear Licensing
DISTRIBUTION LIST FOR MEETING
SUMMARY
- FPL AND NRC STAFF DATED: March 18 1992
'DISTRIBUTION:
.Docket Fil.e PDII-2 RDG JPartlow GLainas JNorris DHiller EJordan RMKenneally GSchwenk KDesai JNorberg HAshar JHa NRC
& Local PDRs TMurley/FHiraglia SVarga HBerkow LRaghavan OGC RAuluck JChen HCaruso PYChen KManoly DJeng
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