ML17340B085
| ML17340B085 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point  |
| Issue date: | 04/09/1981 |
| From: | Varga S Office of Nuclear Reactor Regulation |
| To: | Robert E. Uhrig FLORIDA POWER & LIGHT CO. |
| References | |
| NUDOCS 8104280198 | |
| Download: ML17340B085 (8) | |
Text
Docket No 0-an
-251 APR e SSl Dr. Robert 'E. Uhrig, Vice President Advanced Systems and Technology
@orida Power and Light Company.
Post Office Box" 529100 Niami, Ffjprida 33152
Dear Dr. 33brig:
D UTIQN:
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L PDR TERA NSIC ORB¹1 Rdg DEisenhut OELD IE-3 ACRS-10 SVarga HGrotenhuis CParrish Gray Fi1e R. Prevatti On December 18, 1980 the Florida Power and Light Company responded to questions regarding adequacy of station electric distribution system voltages at the Turkey Point Plant Unit Nos.
3 and 4.
Me have reviewed your response and find that we need additional information to complete our review.
Please respond to the enclosed request for additionhl'nformation within 60 days of the receipt of this letter.
Sincerely,
~ggiml SiSned.
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Steven A. Varga, Chief Operating: Reactors Branch ¹1
. Division of=Licensing Encl osure:
Request for Pdditional Inft11etatinn cc:
w/enclosure See next page
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UNITED STATES NUCLEAR REGULATORY COMMISSION
'WASHINGTON, O. C. 20555 April 9, 1981 Docket Nos.
50-250 and 50-251 Dr. Robert E. Uhrig, Vice President Advanced Systems and Technology Florida Power and Light Company Post Office,Box 529100 Niami, Florida 33152
Dear Dr. Uhrig:
,On December 18, 1980 the Florida Power and Light Company responded to questions regarding adequacy of station electric distribution system voltages at the Turkey Point Plant Unit Nos.
3 and 4.
Me have reviewed your response and find. that we need additional information to complete our review.
Please respond to the enclosed request for additional information within 60 days of the receipt of this letter.
Enclosure:
Request for Additional Information avven A.
av a, Chaff Reactors Blanc
'Dperat ng h 81 Division of Licensing cc:
w/enclosure See next page
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4
Robert E. Uhrig Florida Power and Light Company cc:
Mr. Robert Lowenstein, Esquire Lowenstein,
- Newman, Reis and Axelrad 1025 Connecticut Avenue, N-W-Suite 1214 Mashington, D. C.
20036
.Envi ronmental and Urban Affairs Library Florida International.University,
- Miami, F 1 ori da 33199 Mr. Norman A. Coll,;Esquire
- Steel, Hector and Davis 1400 Southeast First National Bank Building
'iami, Flor ida 33131 Mr. Henry Yaeger, Plant Manager Turkey Point Plant Florida Power and Light Company P. 0.
Box 013100 Miami, Florida 33101 Mr. Jack Shreve Office of the Public Counsel Room 4, Hol.land Building Tallahassee, Florida 32304 Administrator Department of Environmental Regulation Power Plant Siting Section State of Florida 2600 Blair Stone Road Tal 1 ahassee, Flori da 32301 Resident Inspector Turkey Point Nuclear Generating Station U. S. Nuclear Regulatory Commission Post Office Box 1207 Homestead, Florida 33030
0 f
February 3,
1981
,REQUEST FOR ADDITIONAL INFORMATION (Round 2)
TURKEY POINT UNITS 3
& 4 ADEQUACY OF STATION ELECTRIC',DISTRIBUTION SYSTEM VOLTAGES REFERENCE 1:
FPL letter (R.
E Uhrig) to the NRC (S. A. Varga),
dated December 18, 1980.
REFERENCE 2:
NRC letter (W
Gammill) to all Power Reactor Licensees, dated August 8, 1979.
1.
Attachment C of Reference 1 provides the calculated bus voltages for the vari'ous running and starting load combinations.
Clarify the following items:
a)
Are the voltages submitted the transient voltages due to the start-ing loads, or steady state voltages after load starting?
b)
Is. the starting of the safety injection pump and RHR pump as stated in Attachment B, Reference 1.considered to be starting simultaneously with the various starting loads in cases 1 through 18 to establish worst case conditions?
To verify that the Class lE equipment can automatically start and operate within the Class lE equipment's voltage ratings both steady, state and transients terminal voltages
'must be submitted.
If the grid is at.979 per unit (235 KV) of nominal voltage, submit the corresponding steady state per unit value at the Class lE buses prior to the conditions analyzed.
2.
Verify per Guideline 12, Reference 2 that when starting the steam generator feedwater pump (SGFP) after the Class 1E buses are fully loaded (Attachment E,
Reference
- 1) that the undervoltage protection relays will not drop out Submit drawing showing location of proposed undervoltage,relay+.
Also submit the steady state Class 1E load terminal voltages after the SGFP starts and is running.
3.
From the electrical one-line diagram and description in the plant's FSAR, the preferred offsite source for each unit is the unit's startup transformer with the other unit's startup transformer as the alternate offsite source (GDC 17)
.Per GDC 5 and as required by Guideline 2, Reference 2 an analysis must be sub-mitted for the ~orat case condition (i.e. loss of one startup transformer, con-current with the minimum expected grid voltage, accident in
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one unit and the simultaneous shutdown of the other unit )
4
,Did the voltage analysis verification-difference of less than 3X (Ref 1) indicate the calculated voltages to be higher and/or lower than the measured values?
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