ML17354A393
| ML17354A393 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point  |
| Issue date: | 01/29/1997 |
| From: | Croteau R NRC (Affiliation Not Assigned) |
| To: | Plunkett T FLORIDA POWER & LIGHT CO. |
| References | |
| GL-92-08, GL-92-8, TAC-M85616, TAC-M85617, NUDOCS 9701310012 | |
| Download: ML17354A393 (5) | |
Text
m Hr. T. F. Plunkett President Nuclear Division Florida Power and Light Company" P.O.
Box 14000 Juno
- Beach, Florida 33408-0420'
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January-29, 1997
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION GENERIC LETTER 92-08, "THERMO-LAG 330-1 FIRE BARRIERS",
TURKEY POINT UNITS 3 AND 4 (TAC NOS.
H85616 AND H85617)
Dear Hr. Plunkett:
We request that the information be provided within 45 days of receipt of this letter.
Sincerely, Original signed by Richard P. Croteau, Project Manager Project Directorate II-3 Division of Reactor Projects I/II Office of Nuclear Reactor Regulation Docket Nos.
50-250 and 50-251
Enclosure:
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PDR By letter dated June 28, 1996, you submitted a response to the staff Request for Additional Information (RAI) dated September 29, 1995, related to Generic Letter 92-08, "Thermo-Lag 330-1 Fire Barriers," for Turkey Point Units 3 and 4.
Additional information was also provided on September 27, 1996.
We are reviewing and evaluating your responses to GL 92-08 and have determined that additional information, as discussed in the enclosure, is needed in order for the staff to complete our review.
This request is limited to ampacity derating issues.
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T". F. Plunkett Florida Power and Light Company TURKEY POINT LANT CC:
H. S.
- Ross, Attorney Florida Power 5 Light 11770 US Highway 1
North Palm Beach, FL 33408 John T. Butler, Esquire
- Steel, Hector and Davis 4000 Southeast Financial Center Miami, Flor ida 33131-2398 Mr. Robert J.
Hovey, Site Vice President Turkey Point Nuclear Plant Florida Power and Light Company P.O.
Box 029100 Miami, Florida 33102 Armando Vidal County Manager Metropolitan Dade County 111 NW 1 Street, 29th Floor Miami, Florida 33128 Senior Resident Inspector Turkey Point Nuclear Generating Station U.S. Nuclear Regulatory Commission P.O.
Box 1448 Homestead, Florida 33090 Hr. Bill Passetti Office of Radiation Control Department of Health and Rehabilitative Services 1317 Winewood Blvd.
Tallahassee, Florida 32399-0700 Mr. Joe Hyers, Director Division of Emergency Preparedness Department of Community Affairs 2740 Centerview Drive Tallahassee, Florida 32399-2100 Regional Administrator, Region II U.S. Nuclear Regulatory Commission 101 Marietta Street, N.W. Suite 2900 Atlanta, Georgia 30323 Attorney General Department of Legal Affairs The Capitol Tallahassee, Florida 32304 Plant Manager Turkey Point Nuclear Plant Florida Power and Light Company P.O.
Box 029100 Miami, Florida 33102 Hr. H.N. Paduano, Manager Licensing E Special Programs Florida Power and Light Company P.O.
Box 14000 Juno
- Beach, Florida 33408-0420 Hr. Gary E. Hollinger Licensing Manager Turkey Point Nuclear Plant P.O.
Box 4332 Princeton, Florida 33023-4332 Hr. Kerry Landis U.S. Nuclear Regulatory Commission 101 Marietta Street, N.W. Suite 2900 Atlanta, Georgia 30323-0199
FOLLOWUP VEST FOR ADDITIONAL INFORHATI EGARDING GENERIC LETTER 92-08, "THERMO-LAG 330-1 FIRE BARRIERS" TURKEY POINT UNITS 3 AND 4 DOCKET NOS. 50-250 AND 50-251
1.0 BACKGROUND
By letter dated June 28, 1996, Florida Power and Light Company (the licensee) submitted a response to the staff Request for Additional Information (RAI) dated September 29, 1995, related to Generic Letter 92-08, "Thermo-Lag 330-1 Fire Barriers," for Turkey Point Units 3 and 4.
The licensee compared the one-hour Thermo-Lag configurations which was installed at Turkey Point with the Texas Utilities Electric Company (TUEC) tested configurations and has determined that the TUEC test results bound those configurations with some analytical adjustments.
During a meeting held on January 7,
1997, with the licensee the staff raised concerns that the "watts per foot" approach used by the licensee may not adequately bound the actual ampacity derating factor for complex raceway configurations (e.g., multiple conduits wrapped in a single enclosure).
The staff has completed its review of the licensee's submittal and requests the following information.
2.0 RE(VESTED INFORMATION
- 2. 1 The staff, through its examinations of other licensee submittals in this
- area, has found several errors or points of concern pertaining to heat transfer assumptions and modeling with respect to ampacity derating calculations.
Therefore, the staff requests that the licensee provide the following ampacity derating calculations for our review:
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FPL Calculation PTN-BFJE-93-001, "Ampacity Derating
Response
to NRC GL 92-08 for Cable Routed in Conduit and Tray with Thermo-Lag 330-1 Fire Barrier System Coating" FPL Calculation PTN-BFJM-96-028, "Fire Barrier Ampacity Correction Factors for T-Lag 330-1/770-1 Assemblies" c.
FPL Evaluation JPN-PSL-SEEP-96-011, "Engineering Evaluation for Review of Ampacity Ratings for Power Cables in Conduits and Trays with Thermo-Lag 330-1 Covering" 2.2 The licensee should confirm that all fire barrier construction for the applicable configurations are representative of the barrier construction used in the Watts Bar Plant or Comanche Peak Steam Electric Station, Unit 2, ampacity derating tests (i.e.,
TVA or TUEC tests).
If there are deviations or differences between Turkey Point installed Thermo-Lag configurations and tested configurations, the licensee should provide an assessment of the impact of the test results that are being credited by the licensee.
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