ML17345A618
| ML17345A618 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point  |
| Issue date: | 11/28/1988 |
| From: | Edison G Office of Nuclear Reactor Regulation |
| To: | Conway W FLORIDA POWER & LIGHT CO. |
| References | |
| GL-84-04, GL-84-4, NUDOCS 8901090146 | |
| Download: ML17345A618 (3) | |
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'jl UNITEDSTATES NUCLEAR REGULATORY COMMISSlON WASHINGTON, D. C. 20555 November 28, 1988 Docket Nos.
50-250 and 50-251 Mr. W. F.
Conway Senior Yice President-Nuclear Nuclear Ener gy Department Florida Power and Light Company Post Office Box 14000 Juno
- Beach, Florida 33408-0420
Dear Mr. Conway:
SUBJECT:
TURKEY POINT UNITS 3 AND 4 - GENERIC LETTER 84-04, "ASYMMETRIC LOCA LOADS" The purpose of this letter is to inform you that we have formally closed the
" leak-before-break" issue relating to Reactor Coolant System piping for Turkey Point Units 3 and 4.
Generic Letter 84-04 stated that an acceptable technical basis had been provided so that the asymmetric blowdown loads resulting from double-ended pipe breaks in main coolant loop piping need not be considered as a design basis for certain plants, including Turkey Point Units 3 and 4, provided two conditions are satisfied.
However, of the two conditions, only the one relating to the leakage detection systems applies to Turkey Point Units 3 and 4.
Specifically, that condition requires that leakage detection systems be suffi-cient to provide adequate margin to detect the leakage from the postulated circumferential throughwall flaw utilizing the guidance of Regulatory Guide 1.45, with the exception that the seismic qualification of the airborne partic-ulate radiation monitor is not necessary.
That condition also requires that at least one leakage detection system with a sensitivity capable of detecting 1 gallon per minute (gpm) in 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> must be operable.
By letter dated November 1, 1988, Florida Power and Light Company submitted information regarding the leakage detection systems at Tur key Point Units 3
and 4.
This information addressed the requirements of Generic Letter 84-04 which permitted the resolution of Multi-Plant Action (MPA) D-10, "Asymmetric LOCA Loads," using fracture mechanics
" leak-before-break" technology.
This issue had been identified during the staff's resolution of Unresolved Safety Issue A-2, "Asymmetric Blowdown Loads on the Reactor Coolant System."
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PNU
Mr. W.F.
Conway November 28; 1988 We have reviewed your November 1, 1988 submittal and concur that the leakage detection systems at Turkey Point Units 3 and 4 satisfy the requirements in Generic Letter 84-04.
This closes MPA D-10 for Turkey Point Units 3 and 4.
Turkey Point Units 3 and 4 primary loop piping also complies with the revised General Design Criterion 4 (GDC-4) of Appendix A to 10 CFR Part 50, and the dynamic effects of postulated primary loop pipe ruptures may be eliminated from the design basis.
S incere ly, CC:
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HBerkow Original signed by Gordon E. Edison, Sr. Project Manager Project Directorate'.II-2 Division of Reactor Projects-I/II Office of Nuclear Reactor Regulation
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Mr.
W. F.
Conway Florida Power and Light Company Turkey Point Plant CC:
Harold F. Reis, Esquire Newman and Holtzinger, P.C.
1615 L Street, N.W.
Washington, DC 20036 Mr. Jack Shreve Office of the Public Counsel Room 4, Holland Building Tallahassee, Florida 32304 John T. Butler, Esquire
- Steel, Hector and Davis 4000 Southeast Financial Center Miami, Florida 33131-2398 Mr. J.
Odom, Vice President Turkey Point Nuclear Plant Florida Power and Light Company P.O.
Box 029100 Miami, Florida 33102 County Manager of Metropolitan Dade County Miami, Florida 33130 Resident Inspector U.S. Nuclear Regulatory Commission Turkey Point Nuclear Generating Station Post Office Box 57-1185 Miami, Florida 33257-1185 Jacob Daniel Nash Office of Radiation Control Department of Health and Rehabilitative Services 1317 Winewood Blvd.
Tallahassee, Flor ida 32399-0700 Intergovernmental Coordination and Review Office of Planning 5 Budget Executive Office of the Governor The Capitol Building Tallahassee, Florida 32301 Administrator Department of Environmental Regulation Power Plant Siting Section State of Florida 2600 Blair Stone Road Ta 1 1ahassee, Florida 32301 Regional Administrator, Region II U.S. Nuclear Regulatory Commission Suite 2900 101 Marietta Street Atlanta, Georgia 30323 Attorney General Department of Legal Affairs The Capitol Tallahassee','l'orida 32304 Plant Manager Turkey Point Nuclear Plant Florida Power and Light Company P.O.
Box 029100 Miami, Florida 33102