ML17348B307
| ML17348B307 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point  |
| Issue date: | 12/20/1991 |
| From: | Rajender Auluck Office of Nuclear Reactor Regulation |
| To: | Goldberg J FLORIDA POWER & LIGHT CO. |
| References | |
| TAC-M81313, TAC-M81314, NUDOCS 9112310109 | |
| Download: ML17348B307 (12) | |
Text
December 20, 1
Docket Nos.
50-250 and 50-251 Mr. J.
H. Goldberg President - tluclear Division Florida Power and Light Company P.O.
Box 14000 Juno Beach, Florida 33408-0420
Dear Mr. Goldberg:
DISTRIBUTION:
NRC Il Local PDRs PDII-2 RDG File S. Varga G. Lainas H. Berkow R. Auluck E. Jordan D. Miller OGC ACRS (10)
G. Bagchi R.
Rothman M. Sinkule, RII
SUBJECT:
TURKEY POINT UNITS 3 AND 4 - AUDIT OF STRUCTURES AND CIVIL ENGINEERING FEATURES (TAC NOS+81313 AND/$1314)
The NRC intends to perform a structural audit at Turkey Point during the week of January 13, 1992.
The objective of this audit is to obtain information about performance of structures at Turkey Point and to draw some generic conclusions based on the information obtained from this and other plant visits.
Enclosed is the plan and the agenda for our site visit to Turkey Point.
The scope of these agenda items and FPL assistance during the audit has already been discussed with your licensing staff at the Turkey Point site.
If you have any questions, please call me at (301) 504-1471.
Sincerely,
Enclosure:
Agenda cc w/enclosures:
See next page l(ee(ender Auluck, Sr. project Manager Project Directorate II-2 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation OFC
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LTR/TURKEY POIIIT AUDIT 9112310i09 9ii220 PDR ADQCK 05000250 P
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Mr. J.
H. Goldberg Florida Power and Light Company Turkey Point Plant cc:
Harold F. Reis, Esquire Newman and Holtzinger, P.C.
1615 L Street, H.W.
Washington, DC 20036 Jack Shreve, Public Counsel Office of the Public Counsel c/o The Florida Legislature ill West Madison Avenue, Poom 812 Tallahassee, Florida 32399-1400 John T. Butler, Esquire
- Steel, Hector and Davis 4000 Southeast Financial Center Miami, Florida 33131-2398 Mr. Thomas F. Plunkett, Site Yice President Turkey Point Nuclear Plant Florida Power and Light Company P.O.
Box 029100 Miami, Florida 33102 Joaquin Avino County Manager of Metropolitan Dade County 111 NW 1st Street, 29th Floor Miami, Florida 33128 Senior Resident Inspector Turkey Point Nuclear Generating Station U.S. Nuclear Regulatory Commission Post Office Box 1448 Homestead, Florida 33090 Mr. Jacob Daniel Hash Office of Radiation Control Department of Health and Rehabilitative Services 1317 Winewood Blvd.
Ta1 lahassee, Florida 32399-0700 Mr. Robert G. Nave, Director Emergency Management Department of Community Affairs 2740 Centerview Drive Tallahassee, Florida 32399-2100 Administrator Department of Environmental Regulation Power Plant Siting Section State of Florida 2600 Blair Stone Road Tallahassee, Florida 32301 Regional Administrator, Pegion II U.S. tIuclear Regu'tatorg Commission 101 Marietta Street, N.W. Suite 2900 Atlanta, Georgia 303"3 Attorney General Department of Legal Affairs The Capitol Tallahassee, Florida 32304 Plant Vanager Turkey Point Nuclear Plant Florida Power and Light Company P.O.
Box 029100 Miami, Florida 33102 Mr. R. E.
Gr azio Director, Nuclear Licensing Florida Power and Light Company P.O.
Box 14000 Juno Beach, Florida 33408-0420
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ENCLOSURE PLAN FOR TURKEY POINT VISIT January 13 17, 1992 VISITING TEAM MEMBERS:
NRC STAFF R
ROTHMAN~
H ASHAR g J ~
LENAHAN NRC CONSULTANTS J
BRAVERMANg R
MORANTE JANUARY 13, 1992:
The team plans to arrive at the site at approximately 2:00 p.m. to complete necessary HP training.
Some staff members have already received a
formal 'ite access training course at NRC Headquarters.
Therefore, their training need may be minimal, if any.
JANUARY 14(
1992:
8:00 a.m.
5:00 p.m.
(with one hour break for lunch)
Meeting with the licensee to understand Turkey Point's past experience with structural integrity maintenance, surveillance, degradations, modifications/repairs of safety related structures, including:
Brief presentation of seismic design criteria adopted for the development of in-structure floor response
- spectra, design codes/standards used for design of Category I structures against various loads, and design criteria for wind (including hurricane and tornado), tornado missiles, safety related tanks and flood.
Containment tendons surveillance (grease
- leakage, anchor
- heads, most recent surveillance report/key
- findings, tendon force measured vs. predicted, tendon relaxation over time, tendon corrosion, effects of grease seepage into concrete on concrete strength, etc.).
Support anchorages (installation and maintenance experience on expansion
- anchors, dispositions of IE Bulletin 79-02 and IEN 80-21 issues, examples of observed anchorage failures and their safety evaluations, experience on other types of anchor failures, etc.).
Spent fuel pool and racks (general integrity of pool structure, liner and fuel racks, status of fuel rack modification to increase storage capacity, if any, concrete cracking and pool leakage, fuel rack geometry maintenance, heavy loads control, etc.).
\\
Intake structure (maintenance and observation of submerged structural
- elements, concrete
- cracking, spalling, rebar corrosion, past repairs/safety assessment, observed unexpected displacements, etc.).
Masonry walls (brief summary of past fixes (IE Bulletin 80-11),
maintenance and surveillance, through bolt monitoring and trending, interface with main structures, piping attachments, expansion anchors, joints and through block crackings, examples of fixes and modifications since 1980, new data on any II/Iinterference issues, new additions/deletions, etc.).
Results of past observations or measurements of free spaces provided between adjacent structures and the verticality of those structural boundaries, if any, to ensure no physical interference between structures during earthquakes, otherwise, discuss the rationale for not having such data.
Describe the cathodic protection system (CPS) used to protect the containment liner plate, reinforcing bars, and tendon trumplate.
Discuss the extent to which the design relies on the effectiveness of the CPS (e.g.
was a lower corrosion rate assumed for the liner plate) and describe the performance history of the CPS.
Break for lunch (approx. at noon) and staff caucus.
Summarize geology/foundation conditions and ground water effects on structures, foundations, and buried systems (piping, electrical
- systems, etc.).
Ground water problems such as seepage through foundation walls or floors, containment lower elevation ponding/seepage, if
- any, tendon qallery water
- seepage, design adequacy and condition of flood retaining structures (including doors,
- louvers, stop logs, exterior walls, flood embankments, etc.).
Piping supports anchorage issues (examples of problems encountered in concrete embedded anchors for piping and equipment) and buried piping integrity and inspection/repairs.
Description of any surveillance or inspection programs which identify and monitor concrete cracking or steel corrosion in Category I structures.
Summarize the results of pre-ILRT visual examination of containments (e.g. cracking, liner corrosion, liner bulging).
Settlement issues (examples of abnormal or unexpected structural foundation settlements observed and their engineering dispositions,
- repairs, monitoring programs, etc.).
Seismic instrumentation (operability and functionality maintenance, difficulties experienced and records retrieved, instrumentation maintenance specs.,
upgrading plan, if any, etc.).
Safety related storage tanks (operating and maintenance experience, integrity of anchor bolts, tank leakage and corrosion, if any, unexpected settlements, earthquake experience, integrity of tank appurtenances, cracking of tank foundation, etc.).
Civil Structural LERs:
See page 6.
Licensee discussion of past dispositions of structural issues identified in previous NRC staff inspection reports.
List of civil/structural related 10 CFR 50.59 evaluations and key summary of the evaluations (the staff plans to select a few 50.59 evaluations for subsequent audit at the site).
Plant safety procedures in the event of a high flood, earthquake, explosion, hurricane or tornado.
Additional licensee suggested items for discussion.
Additional staff identified items for discussion.
Staff caucus.
Reiteration of action/follow-up items.
A brief presentation by the licensee covering each of the above items should be scheduled (generally, each briefing should not exceed 10 minutes supported by a
few slides followed by questions/discussions).
Pertinent 10 CFR 50.59 documents should be made readily available for staff selection of key documents for detailed review.
Staff caucuses of 30 minutes duration are planned right after the lunch break and prior to the last task (reiteration of action/follow-up items.)
The licensee is requested to allocate presentation time for each item with strict time control and the
staff is requested to limit its questions to the essential ones such that the entire agenda can be hopefully covered prior to 5:00 p.m.
JANUARY 15, 1992:
8:00 a.m.
5:00 p.m.
The team will walkdown the plant including the following structures/areas:
Walkdown and examination of exterior parts of the containment (containment wall,
- dome, junction with
- basemat, buttresses/tendons),
tendon gallery, stack, and interfacing areas with other Category I structures.
Walkdown of auxiliary,
- control, fuel, and diesel buildings.
Items to be examined are basemat; concrete
- walls, floors, and roof; building structural steel; masonry walls; key cable trays and conduits; equipment and piping anchorages; tanks; and areas of water-seepage, ponding, corrosion or other signs of degradation.
Walkdown and examination of turbine building and outside periphery of the power block structures.
Licensee assistance is requested to develop an efficient walkdown routing plan to cover the above listed structures/areas in 5 to 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> with time allowance for lunch and staff caucus.
The staff may change or modify the routing plan during the day in order to maximize gathering of pertinent information regarding the integrity, functionality, degradation, maintenance/surveillance, repair and modification of structures at Turkey Point.
During the
- walkdown, licensee support and provision of personnel who are familiar with the above listed information and able to respond to related staff questions are requested.
At the end of the walkdown, the staff will hold a caucus and may also hold a meeting with the licensee depending on the availability of time.
JANUARY 16, 1992:
8:00 a.m. - 12:00 p.m.
The staff will continue walkdown of the following items with the licensee assistance in preparing a routing plan to complete the task by noon:
Walkdown and examination of intake structure.
Walkdown and examination of water retaining structures, earth work (canal, dike, etc.), heat sink/dam complex, as applicable, including any settlement/water table/flow monitoring devices.
Walkdown and examination of special areas of interest identified during the January 14, 1992 meeting.
During the morning walkdown session a
subgroup will be selected to review a few 50.59 documents previously chosen at the January 14, 1992 meeting (licensee to provide a private on-site office for staff use).
JANUARY 16, 1992, cont'd 12:00 p.m.
3:00 p.m.
Lunch break and staff caucus.
3:00 p.m.
5:00 p.m.
Discuss with the licensee significant findings and observations identified during the plant walkdown.
Discuss with the licensee questions/issues identified in the review of 50.59 evaluations, surveillance and inspection
- reports, plant safety procedures and other safety assessment documents.
Identification of licensee commitments and follow-up items as well as staff action items.
JANUARY 17, 1992:
8:00 a.m.
10:00 a.m.
Exit meeting with licensee.
COMPLETION OF PLANT VISIT
TURKEY POINT 3&4 CIVIL STRUCTURAI RELATED LERS 1980 TO PRESENT LER 80-021 8 1-013 82-010 82-009 Discharged battery of the seismograph.
Void in concrete below equipment hatch.
Pipe support no longer contacting the ground due to grout cracking.
Surveillance test of seismograph not completed on schedule.83-006 88-026 81-014 83-001 83-002 Masonry walls do not comply with designs (e.g.
no internal grout/reinforcing steel).
Flood protection deficiencies for diesel oil transfer
- pumps, near the EDG
- building, auxiliary building, North/South/West side of plant.
Defective area in concrete containment.
Installation deficiencies of framing steel and supports inside containment.
Fuel assembly drop into spent fuel rack.
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