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| VERMONT.. YANKEE MCCLEAR POWER' CORPORATION.-
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| t P.O. Box 157. Governor Hunt Road
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| j Vernon, Vermont 05354-0157- !
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| f }
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| j ,. (802) 257-7711 i --
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| April 10,1994 VY-RCE-94-009 i BVY 94-39 ;
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| U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Attn: Document Control Desk -
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| ==Reference:==
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| a) License No. DPR-28 (Docket No. 50-271) *
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| ==Dear Sir:==
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| Submitted herewith is the Monthly Statistical Report for the Vermont Yankee Nuclear Power Station for the month of March.1994.
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| Very tally yours, Vermont Yankee Nuclear Power Corp.
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| Al' Donald A. Reid Vice President, Operations >
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| cc: USNRC, Region I USNRC Resident Inspector, VYNPS P
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| f 180006 9404150252 940331 PDR ADOCK 05000271
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| \ '
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| R. PDR
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| l l VERMONT YANKEE NUCLEAR POWER STATION -
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| l MONTIILY STATISTICAL REPORT 94-03
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| FOR TIIE MONTII OF MARCII 1994 t
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| l I
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| i DP 0411 Rev. 5 Page 1 of 1
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| . OPERATING DATA REPORT
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| . DOCKET NO.50-271 DATE 940410 COMPLETED BY G.A. WALLIN TELEPHONE (802)257-7711 OPERATING STATUS
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| : 1. Unit Name: Vermont Yankee
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| : 2. Reporting Period: March NOTES:
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| : 3. Licensed Thermal Power (MWt):1593
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| : 4. Nameplate Rating (Gross MWe) : 14Q ,
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| : 5. Design Electrical Rating (Net MWe): 514(oc) 504 (cc)
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| : 6. Maximum Dependable Capacity (Gross MWe) : 11E
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| : 7. Maximum Dependable Capacity (Net MWe): 50A
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| : 8. If changes, occur in capacity ratings (Items Number 3 through 7) since last report, give reasons:
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| N/A
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| : 9. Power level to which restricted, if any(Net MWe): N/A
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| : 10. Reasons for restrictions, if any: N/A This Month Yr-to-Date Cumulative
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| : 11. Hours in Reporting Period 744.00 2160.00 186984.00
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| : 12. Number Of Hours Reactor was Critical 744.00 2160.00 153377.41
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| : 13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00
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| : 14. Hours Generator On-Line
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| * 744.00 2154.35 150269.97
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| : 15. Unit Reserve Shutdown Hours 0.0Q_ 0.00 0.00
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| : 16. Gross Thermal Energy Generated (MWH) 1_167695.00 3399641.00 224105312.50
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| : 17. Gross Electrical Energy Generated 395437.00 1151755.00 74671137.00
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| : 18. Net Electrical Energy Generated (MWH) 380313.00 1107360.00 70954384.00
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| : 19. Unit Service Factor 100.00 99.74 79.64
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| : 20. Unit Availability Factor 100.00 99.74 79.64 ,
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| : 21. Unit Capacity Factor (Using MDC Net) 101.42 101.72 74.61
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| : 22. Unit Capacity Factor (Using DER Net) 99.45 99.74 73.16
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| : 23. Unit Forced Outage Rate 1.51 0.79 5.12
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| : 24. Shutdowns scheduled over next 6 months (Type, Date, and Duration of Each: N/A
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| : 25. If shut down at end of report period, estimated date of startup:N/A
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| : 26. Units In Test Status (prior to commercial operation): N/A Forecast Achieved INITIAL CRITICALITY INITIAL ELECTRICITY COMMERCIAL OPERATION VYDPF 0411.01 DP 0411 Rev. 5 Page 1 of 1 RT No. 13.F01.19F
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| l AVERAGE DAILY UNIT POWER LEVEL l
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| DOCKET NO. 50-271 UNIT Vermont Yankee DATE 940410 l COMPLETED BY G.A. WALLIN TELEPHONE (802)257-7711 :
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| MONTH March DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net)
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| : 1. 519 17. 494
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| : 2. 519 18. 490
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| : 3. 519 19. 519
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| : 4. 520 20. 520 ,
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| : 5. 519 21. 529
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| : 6. 519 22. 519
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| : 7. 519 23. 519
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| : 8. 519 24. 519
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| : 9. 519 25. 520
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| : 10. 519 26. 520
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| : 11. 519 27. 519
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| : 12. 519 28. 519 13, 519 29. 519 i l
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| : 14. 519 30. 519
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| : 15. 333 31. 519
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| : 16. 514 l INSTRUCTIONS: l l
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| On this format, list the average daily unit power level in MWE-Net j for each day in the reporting month. Compute to the nearest whole !
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| megawatt.
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| VYDPF 0411.02 DP 0411 Rev. 5 Page 1 of 1 !
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| RT No. 13,F01.18V I i
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| UNIT SHUTDOWNS AND POWER REDUCTIONS -
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| REPORT MONTH MARCH DOCKET NO 50-271 UNIT NAME Vermont' Yankee DATE 940410 COMPLETED BY G.A. Wallin TELEPHONE (802)257-7711 1 2 3 4 5 No. Date Type Duration Reason Method of License System Component Cause and Corrective (hours) Shutting Event Code Code Action to Prevent Down Report # Recurrence Reactor 94-03 940315 S 0.00 B,H* 4 N/A RB CONROD Surveillance testing Power and a Rod Pattern Reduction Exchange 94-03 940315 F 11.42 A 4 N/A CD VALVOP MSIV-80B closure Power timing out of Reduction specification. Speed adjustment made to correct deficient time 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) (NUREG 0161)
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| E-Operator Training and License Examination 5 Exhibit I - Same Source VYDPF 0411.03 F-Administrative DP 0411 Rev. 5 G-Operational Error (Explain)
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| Page 1 of 1 *H-(Explain) - Control Rod Pattern Exchange u_______._______ _. _ _ _ _ _ _ _ _ _ . . _ _ _ _ _ _ _ _ _ _ _ _ _ . _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ _ _ . _ _ _ _ _ _ _ _ _ _ _ _ . _ _ _ . _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ . _ _ _
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| DOCKET NO. 50-271 I DATE 940410 i l ., COMPLETED BY G.A. WALLIN l TELEPHONE (802)257-7711 !
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| REPORT MONTH March
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| ==SUMMARY==
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| OF OPERATING EXPERIENCES Highlichts Vermont Yankee operated at 99.5% of rated thermal power for the month.
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| Gross electrical generation was 395.437 MWHe or 98.4% design electrical i capacity.
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| Operatino Summary The following is a chronological description of plant operations including other pertinent items of interest for the month:
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| At the beginning of the reporting period the plant was operating at 99.9%
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| of rated thermal power. ,
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| 940315 At 0405 hours, initiated a power reduction to minimum recirculation flow to perform surveillance testing, and a rod pattern exchange.
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| ! 940315 At 0430 hours, initiated turbine bypass valve testing. (See Unit Shutdowns and Power Reductions) 940315 At 0533 hours, completed turbine bypass valve testing.
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| i 940315 At 0601 hours, at minimum recirculation flow, initiated MSIV testing.
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| MSIV-80B closure time was not within specification. (See Unit Shutdowns and Power Reductions) 940315 At 0620 hours, initiated a rod pattern exchange. (See Unit Shutdowns l and Power Reductions) 1 940315 At 0715 hours, completed the rod pattern exchange.
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| 940315 At 1448 hours, and 40% power, initiated a drywell entry to perform a speed adjustment on MSIV-80B.
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| l l 940315 At 1840 hours, completed speed adjustment to MSIV-80B.
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| , f 940315 At 1858 hours, completed MSIV testing and began a return to full power.
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| l At the end of the reporting period the plant was operating at 99.9% of rated thermal power.
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| VYDPF 0411.04 DP 0411 Rev. 5 !
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| Page 1 of 1 RT No. 13.F01.18X j i
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