ML17212B332
| ML17212B332 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 01/22/1982 |
| From: | Robert E. Uhrig FLORIDA POWER & LIGHT CO. |
| To: | Eisenhut D Office of Nuclear Reactor Regulation |
| References | |
| L-82-27, NUDOCS 8201290418 | |
| Download: ML17212B332 (6) | |
Text
<<REGULATORY -I RMATION DISTRIBUTION "SYS
('R'IDS)
'AQCESSION, NBR!'8201'290)18 DOO ~ DATEt.82/01/22 NOTARIZED:
NO FACIL:50 335 'St. 'Lucie 'Plant~
Unilt ii ',Florida:Power 8 L'ight Co.
'AUTH~ NAME
'AUTKOR 'AFFILIATION UKRIGt R ~ E ~
.Florida IPower '8.Li'ght Co.
<<R E<<C I P ~ f4AME
<<RECIPIENTAFFIL<<IATION
-:EI SENHUT < D.'G ~
Di v i s i on of Licensing SIZE ~,
NOTES
SUBJECT:
"Submits <<resul ts of,.reevaluation of <<postulated loss of ac
<<power at 2i700 MN for facili<<ty,Findings "indicate:that at <<stretch power <<ratingpunit can,'be <<safely controlled even
'if ~total loss of ac <<power occurs.
DI'STRIBUTION >CODE: 'A015S
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TI'TLE: Onsi,te Emengency Power Systems DOOKET 05000335 RECIPIENT ID CODE/NA'ME ACTION!
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O. BOX 529100 MIAMI,F L 33152 As~A FLORIDAPOWER & LIGHTCOMPANY January 22, 1982 L-82-27 Office of Nuclear Reactor Regulation Attention:
Mr. Darrell G. Eisenhut, Director Divi si on of Licensing U.S. Nuclear Regulatory Commission Washington, D.C. 20555
Dear Mr. Eisenhut:
(
RECFQFO 9
JAN 88 t98ga-12 eamNeueu~
R5
/
Re:
St.
Luci e Unit 1
Docket No. 50-335 Loss of AC Power Our letter (L-81-52) dated December 18, 1981 provided a response to your concerns on a postulated loss of AC power at St.
Luci e Unit 1.
We concluded that St. Luci e Unit 1 could be safely controlled through a total loss of AC power.
This conclusion was based on our review of the analysis for St. Lucie Unit 2 which was conducted at a power level of 2560 Mwt.
We also stated in our letter, that we would re'evaluate the results of the St.
Luci e Unit 1 study for a power level of 2700 Mwt.
We have completed our reevaluation and the results indicate that there is very little difference, as far as the loss of AC transient is concerned, between 2560 Mwt and 2700 Mwt.
Specifically
. our evaluation for St. Lucie Unit 1 at 2700 Mwt has shown that:
1.
Natural circulation and core cooling can be maintained for at least 3
hours.
2.
The reactor core remains in a subcritical condition.
3.
There is no fuel damage.
4.
The RCS coolant pressure remains within limits.
o(5
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820i2904ia 820i22 PDR ADQCK 05000338 PbR.
PEOPLE SERVING PEOPLE
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Nr. Darrell G. Eisenhut,'ctor Page 2
r's shown in our previous letter (L-81-327) there is a high probability of restoring off site AC power in a short time period and there would be a very high probability of restoring off site AC power prior to the 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> mentioned above.
We conclude, therefore that at stretch power rating, St. Lucie Unit 1
can be safely controlled through a total loss of AC power.
Very truly yours, Robert E. Uhrig Vice President Advanced Systems 8 Technology REU/PLP/ras cc:
Mr. J.
P. O'Reilly, Region II Harold F. Reis, Esquire
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