ML20079B288
| ML20079B288 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 05/31/1991 |
| From: | Murphy W, Wallin G VERMONT YANKEE NUCLEAR POWER CORP. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| VYV-91-134, NUDOCS 9106140191 | |
| Download: ML20079B288 (6) | |
Text
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VBltMONT YANIWE NUCLEAIt POWEit COltPOltATION
?'
P.O. Box 167, Governor Hunt Road I
ji}
Vernon. Vermont 05354-0157 (802) 257-7711
($7 June 10, 1991 VYV-91-134 U.S.
Nuclear Regulatory Ccmmission ATTN: Document Control Desk Washington, D.C.
20555
Dear Sir:
Submitted herewith is the Monthly Statistical Report for the Vermont Yankee Nuclear Power Station for the month of May, 1991.
V ry truly yours,
)
VE N
YA 1 C, AR PO R CORP.
W dhWt Senior Vi e}6rp Pres $ e O.ecutions cc:
- 1) USNRC Region I 475 Allenda?e Road
)
King of Prussia, PA 19406
- 2) USNRC Resident Inspector, VYNPS DP 0411 Rev. 3 Page 1 of 1 9106140191 910531 PDR ADOCK 05000271 R
PDR t'I l
1 1
i VERMONT YANKEE NUCLEAR.0WER STATION MONTHLY STATISTICAL REPORT 91-05 FOR THE MONTH OF MAY, 1991 DP 0411 Rev. 3 Page 1 of 1
____._.__.~._____.m__._..
4 OPERATING DATA REPORT DOCKET NO.10-271 DATE 910610 COMPLETED BY G.A.
WALLIN TELEPHONE (802)257-7711 QPf. RATING STATUS
- 1. Unit Name:
yermont Yankee 2.
Reporting Period:
May.
NOTES:
- 3. Licensed Thermal Power (MWt):1593
- 4. Nameplate Rating (Gross MWo)t 212 5.
Design Electrical Rating (Not MWe):
514(oc) 504(cc)
- 6. Maximum Dependable Capacity (Gross MWe):
Elk
- 7. Maximum Dependable Capacity (Not MWo):
LDA 8.
If changes, occur in capacity ratings (Items Number 3 through 7) since last report, give reasons:
N/A 9.
Power level to which restricted, if any(Not MWe):
N/A
- 10. Reasons for restrictions, if any:
N/A This Month Yr-to-Date Cumulative
- 11. Hours in Reporting Period 744.00 3623.00 162143.09
- 12. Number Of Hours Reactor was Critical 744.00 3382.70 131571.33
- 13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00 l
- 14. Hourb Generator On-Line 744.00.
3343.25 128714.85 l
- 15. Unit Reserve Shutdown Hours 0.00 0.00 0.00
- 16. Gross Thermal Energy Generated (MWH) 1174091.50 1264259.50 190579564.50
- 17. Gross Electrical Energy Generated 391968.00 1769691.00 63517386.02
- 18. Not Electrical Energy Generated (MWH) 373118.00 1694612.00 60326582.00
- 19. Unit Service Factor 100.00 92.28 78.56
- 20. Unit Availability Factor 100.00 92.28 78.51
- 21. Unit Capacity Factor (Using MDC Net) 99.50 92.81 73.05
- 22. Unit Capacity Factor (Using DER Net) 97.57 91.00 71.63
- 23. Unie Forced Cutage Rate 0.00 7.72 5._11
- 24. F
'uowns scheduled over next 6 months (Type, Date, and Duration of Each:
N/A l
- 25. If shut down at end of report period, estimated date of startup: N/A
- 25. Units In Test Status (prior to commercial operation): N/A Forecast Achieved INITIAL CRITICALITY INITIAL ELECTRICITY COMMERCIAL OPERATION VYDPF 0411.01 DP 0411 Rev. 3 Page 1 of 1 RT No. 13.F01.19F
AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.12-171 UNIT Yg1Tignt_ Yankee l'AT E 910630 COMPLETED BY Q. A._ _ WAkhUl TELEPHONE lapfjl31-7711 MONTH May DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)
(MWe-Net) 1.
393 17.
509 2.
514 18, 509 3.
5,15 19.
478 4.
516 20.
506 5,
515 21.
505 6.
515 22.
504 7
515 23.
498 8.
515 24.-
491 9.
QJ 6 25, 488 10, 515 26.
491 11.
515 27, 492 12.
515 28, 494 13, 514 29.
495 14, 511 30, 492 15, 511 31.
48_1 16.
509 INSTRUCTIONS:
On this format, list the average daily unit power level in VdE-Net for each day in the reporting month.
Compute to the nearert whole megawatt.
VYDPP 0411.02 DP 0411 Rev. 3 Page 1 of 1 RT No. 13.F01.18V 4
n.
4
I f
i UNIT SHUTDOWNS AND POWER REDUCTIONS
[
l REPORT MONTH MAY DOCKET No 50-271 UNIT NAME Vermont Yankee i
DATE 910610 I
COMPLETED BY G.A. Wallin TELEPHONE (802)257-7711 4
I I
i 1
2 3
No.
Date Type Duration Reason Method of License System Component Cause and Corrective (hours)
Shutting Event Code Code Action to Prevent i
Down Report i 4
5 Recurr2nce Reactor 91-06 910519 5
0.00 B,H*
N/A N/A RB CONROD Control rod exercising i
and weekly turbine surveillance followed i
by a rod pattern i
4 exchange.
i
[
t 1
F: Forced 2 Reason:
3 Method:
4 Exhibit G-Instructions
[
S: Scheduled A-Equipment Failure (Explain) 1 - Manual for Preparation of Data B-Maintenance or Test 2 - Manual Scram Entry Sheets for License C-Refueling 3 - Automatic Scram Event Report (LER) File
~
D-Regulatory Restriction 4 - Other (Explain)
E-Operator Training and l
License Examination 5 Exhibit I - Same Source f
)
VYDPF 0411.03 F-Administrati-e DP 0411 Rev. 3 G-Operational Error (Explain)
Page 1 of 1
- H-(Explain)- rod pattern exchange i
9 I
i J
i
[
t
DOCKET NO.
50-271 DATE 9_10610 COMPLETED BY G.A.
WALLIN TELEPilONE (8021257-77L1 REPORT MONTil MAY S11MMARY OF OPERATING EXPERIENCES Rishlights Vermont Yankee operated at 99.1% of rated thermal power for the month.
Gross electrical generation was 391.968 MWHe or 97.6% design electrical capacity.
Onnratina Summary The following is a chronological description of plant operations including other pertinent items of interest for the month:
At the beginning of the reporting period the plant was operating at 78.7%
of rated thermal power.
910516 At 0001 hours1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />, began cooling tower operations and went to a hybrid cycle of operation.
Varying modes of cycle operation from this point on will be based upon river temperature considerations.
910519 At 0150 hours0.00174 days <br />0.0417 hours <br />2.480159e-4 weeks <br />5.7075e-5 months <br />, initiated a power reduction to less than 80%
to perforn a rod pattern exchange.
(See Unit Shutdowns and Power Reductions) 910519 At 0340 hours0.00394 days <br />0.0944 hours <br />5.621693e-4 weeks <br />1.2937e-4 months <br />, completed the rod pattern exchange.
910519 At 0522 hours0.00604 days <br />0.145 hours <br />8.630952e-4 weeks <br />1.98621e-4 months <br />, began a return to full power.
l l
At the end of the reporting period the plant was operating at 99.9% of rated thermal power.
VYDFF 0411.04 l
DP 0411 Rev. 3 I
Page 1 of 1 RT No.-13.F01.18X l
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