ML17355A399
| ML17355A399 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point  |
| Issue date: | 08/12/1999 |
| From: | Jabbour K NRC (Affiliation Not Assigned) |
| To: | Plunkett T FLORIDA POWER & LIGHT CO. |
| References | |
| GL-96-06, TAC-M96878, TAC-M96879, NUDOCS 9908180225 | |
| Download: ML17355A399 (7) | |
Text
August 12, 1999 Mr. Thomas F. Plunkett President - Nuclear Division Florida Power and Light Company P.O. Box 14000 Juno Beach, Florida 33408-0420
SUBJECT:
CLOSEOUT OF GENERIC LETTER 96-06 FOR THE TURKEYPOINT PLANT, UNITS 3 AND 4 (TAC NOS. M96878 AND M96879) tl
Dear Mr. Plunkett:
Generic Letter (GL) 96-06, "Assurance of Equipment Operability and Containment Integrity During Design Basis Accident Conditions," dated September 30, 1996, included a request for licensees to evaluate cooling-water systems that serve containment air coolers to ensure that they are not vulnerable to waterhammer and two-phase flowconditions.
Additionally, licensees were requested to evaluate piping systems that penetrate containment to determine ifthey are susceptible to thermal expansion of fluid which could lead to overpressurization of piping.
By letters dated October 23, 1996, January 28, 1997, March 24, 1997, September 28, 1998, and June 4, 1999, Flo'nda Power 8 Light Company (FPL) provided its response to GL 96-06.
Based on its review, the staff finds that FPL provided an acceptable response to the GL as outlined in the enclosed evaluation.
Ifyou have any questions regarding this matter, please contact me at (301) 415-1496.
Docket Nos. 50-250 and 50-251
Enclosure:
Evaluation Report cc w/encl: See next page Sincerely,
, Origixml signed by:
'Kahtan N. Jabbour, Senior Project Manager Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Distribution:
Docket File K. Jabbour R. Scholl (e-mail Evaluation))
PUBLIC OGC J. Tatum TP Reading ACRS B. Jain B. Clayton L. Wert, Rll DOCUMENT NAME: G:)PDII-2>TURKE'ACLO9606.wpd To receive a co ofthis document indicate in the box C=Co w/o attachment/enciosure E=Co with attachment/enclosure N = No copy OFFICE NAME DATE PDII-2/PM KJabbour:mw l
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UNITED STATES NUCLEAR REGULATORY COMIVIISSION WASHINGTON, D.C. 20555-0001 August 12, 1999 Mr. Thomas F. Plunkett President - Nuclear Division Florida Power and Light Company P.O. Box 14000 Juno Beach, Florida 33408-0420
SUBJECT:
CLOSEOUT OF GENERIC LETTER 96-06 FOR THE TURKEY POINT PLANT, UNITS 3 AND4 (TAC NOS. M96878 AND M96879)
Dear Mr. Plunkett:
Generic Letter (GL) 96-06, "Assurance of Equipment Operability and Containment Integrity During Design Basis Accident Conditions," dated September 30, 1996, included a request for licensees to evaluate cooling-water systems that serve containment air coolers to ensure that they are not vulnerable to waterhammer and two-phase flowconditions. Additionally, licensees were requested to evaluate piping systems that penetrate containment to determine ifthey are susceptible to thermal expansion of fluid which could lead to overpressurization of piping.
By letters dated October 23, 1996, January 28, 1997, March 24, 1997, September 28, 1998, and June 4, 1999, Florida Power & Light Company (FPL) provided its response to GL 96-06.
Based on its review, the staff finds that FPL provided an acceptable response to the GL as outlined in the enclosed evaluation.
Ifyou have any questions regarding this matter, please contact me at (301) 415-1496.
Sincerely,~ g. JM~
Kahtan N. Jabbour, Senior Project Manager Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50-250 and 50-251
Enclosure:
Evaluation Report cc w/encl: See next page
Mr. T. F. Plunkett Florida Power and Light Company TURKEYPOINT PLANT CC:
M. S. Ross, Attorney Florida Power & Light Company P.O. Box 14000 Juno Beach, FL 33408-0420 Mr. Robert J. Hovey, Site Vice President Turkey Point Nuclear Plant
'lorida Power and Light Company 9760 SW. 344th Street Florida City, FL 33035 County Manager Miami-Dade County 111 NW 1 Street, 29th Floor Miami, Florida 33128 Senior Resident Inspector Turkey Point Nuclear Plant U.S. Nuclear Regulatory Commission 9762 SW. 344'" Street Homestead, Florida 33090 Mr. WilliamA. Passetti, Chief Department of Health Bureau of Radiation Control 2020 Capital Circle, SE, Bin ¹C21 Tallahassee, Florida 32399-1741 Mr. Joe Myers, Director Division of Emergency Preparedness Department of Community Affairs 2740 Centerview Drive Tallahassee, Florida 32399-2100 Attorney General Department of Legal Affairs The Capitol Tallahassee, Florida 32304 Plant Manager Turkey Point Nuclear Plant Florida Power and Light Company 9760 SW. 344th Street Florida City, FL 33035 Mr. Steve Franzone Licensing Manager Turkey Point Nuclear Plant 9760 SW. 344th Street Florida City, FL 33035 Mr. John Gianfrancesco Manager, Administrative Support and Special Projects P.O. Box 14000 Juno Beach, FL 33408-0420 Mr. Rajiv S. Kundalkar Vice President-Nuclear Engineering Florida Power & Light Company
, P.O. Box 14000 Juno Beach, FL 33408-0420
EVALUATIONREPORT FOR RESOLUTION OF GENERIC LETTER 96-06 ISSUES TURKEY POINT PLANT UNITS 3 AND 4 Generic Letter (GL) 96-06, "Assurance of Equipment Operability and Containment Integrity During Design Basis Accident Conditions," dated September 30, 1996, included a request for licensees to evaluate cooling-water systems that serve containment air coolers to assure that
, they are not vulnerable to waterhammer and two-phase flow conditions. Additionally, licensees were requested to evaluate piping systems that penetrate containment to determine ifthey are susceptible to thermal expansion of fluid which could lead to overpressurization of piping. Florida Power and Light Company (the licensee or FPL) provided its 30-day response to the GL by letter dated October 23, 1996, and its 120-day response by letter dated January 28, 1997.
WATER HAMMERAND TWO-PHASE FLOW ISSUES GL 96-06 requested licensees to evaluate cooling-water systems that serve containment air coolers to assure that they are not vulnerable to waterhammer and two-phase flowconditions.
FPL provided its assessment by letter dated January 28, 1997, and provided additional information by letter dated September 28, 1998, in response to the staff's request for additional information dated July 16, 1998.
Based on the information provided in FPL's submittals, it is the NRC staff's understanding that FPL has installed elevated head tanks to eliminate the potential for waterhammer and two-phase flowconditions to exist in the component cooling-water system.
The staff is satisfied with FPL's response and considers the waterhammer and two-phase flow elements of GL 96-06 to be closed.
THERMALLYINDUCED PRESSURIZATION OF PIPING RUNS In its submittal of January 28, 1997, the licensee identified 12 penetrations potentially vulnerable to a water-solid volume that may be subjected to an increase in pressure due to heating of trapped fluid. The licensee determined that all affected penetrations are operable based on the criteria in Appendix F to Section III of the American Society of Mechanical Engineers Code.
For its long-term corrective action, the licensee committed to submit a license amendment to incorporate the methodology of Section III, Appendix F, for use in analysis of isolated piping sections in containment under post-accident conditions.
In its submittal of March 24, 1997, the licensee stated that it willimplement system modifications in lieu of its commitment for license amendment.
The licensee, in its submittal of June 4, 1999, provided the details of the system modifications it had implemented in the fall of 1997 and fall of 1998 on Units 4 and 3, respectively.
The licensee resolved 6 of the 12 penetrations by providing open flow paths to existing relief valves by changing the valve alignment for the safety injection test lines. The remaining six penetrations were resolved by installing thermal relief valves, except for one penetration on Unit 4, where the licensee drilled the check valve discs to provide for pressure relief capability.
The staff finds that the licensee's corrective actions provide an acceptable resolution for the issue of thermally-induced pressurization of piping runs penetrating the containment.
Principal Contributors:
J. Tatum B. P. Jain Date: August 12, 1999 Enclosure
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