ML20154B841
| ML20154B841 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 08/31/1988 |
| From: | Murphy W, Wallin G VERMONT YANKEE NUCLEAR POWER CORP. |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| VYV-88-189, NUDOCS 8809140158 | |
| Download: ML20154B841 (6) | |
Text
.
.n VERMONT YANKEE NUCLEAR POWER STATION MONTHLY STATISTICAL REPORT 88-08 FOR THE MONTH OF AUGUST, 1988
,- 0) 1 Rev. 2
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OPERATING DATA REPORT DOCKET NO.
50-271_____
DATE 880910 COMPLETED BY G.A.
Wallin TELEPHONE (802)257-7711 OPERATING STATUS 1.
Unit Name Vermont Yankee NOTES:
2.
Reporting Period:
August i
3.
Licensed Thermal Power (MNt):
1593 4.
Nameplate Rating (Gross MWe):
540
)
5.
Design Electrical Rating (Net MWe): 514(oc) 504(cc) 6.
Maximum Dependable capocity(Grc is MWe): 535 l
7.
Masimum Dependable Capacity (Net MWe):
504 8.
If changes occur n capacity ratings (Items Number 3 through 7)since
)
last report, give reasons N/A j
,i 1
9.
Power level to which restrfcted, i f any(Net MWe):
~N/A i
10.
Reasons for restrictioto, if any:
NA I
i This Month Yr-to-Date Cumulative 11.
Hours In Roporting Period 744.00 5855.00
)
12.
Number Of Hours Reactor was Critical 666.00 5475.32 110320.68 j
13.
Reactor Reserve Shutdown Hours 0.00 0.00 0.00 i
14.
Mours Generator On-!.ine 640.85 5405.15 _
107674.42 15.
Unit Reserve Shutdown Hours 0.00 0.00 0.00 16.
Gross Therr31 Er orgy Generated (HWH) 990023.50 6397521.0_0 158138232.50 17.
Gross Electrical Energy Generated
_319539.00 2795644.qq 52635588.00 i
18.
Net Electrical EnerJy Generated (MWH)_299579.00 2660830.C0 49955917.00 19.
'Jn i t Service ractor 86.!4 92.32 77.03 seit Availability T&ctor 86.14 92.32 77.03 s.
]
21.
Unit Ca pacity Factor (Using MDC Net) _
78.34 79.89 90.1)1 70.91 l
22.
Unit Capacity Factor (Using DSR Net) 88.4 69.53 i
23.
Unit Forced Outage Rate 13.86 4.68 e777
)
i 24.
Shutdevns scheduled over next 5 months (Type, Dat3~, and Duration of Each): 1989 Refueling Outage scheduled to begin on re'uruary 11, 1989 I
i j
and conclude on April 8, 1989.
25.
If shut down at eno ol' report period, estimated date of startup: N/A 26.
Units In Test Status (r 1 r
- .n comT?rcial operation): N/A Forecast Achieved INITIAL CR1.ICM,
'Y
)
INITIAL ELEC-irY j
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f7DPr 0411.01 TS 0 411 'dev. 2 age 1 or 1 l
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AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-271 UNIT Vermont Yankee DATE 880910 20MPLETED BY G.A.
Wallin TELEPHONE (802)237-7711 MONTH August DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE PAILY POWER LEVEL (MWe-Net)
(MWe-Net) 1.
482 17.
484
~
2.
482 18.
488 3.
481 19, 491 4.
~180 20, 490 5.
479 21, 488
' ~ -
6.
480 22.
492 l
(
7.
480 23.
490 8.
483 24.
145 3
9.
482 25.
0 10.
478 26.
0 11.
476 27.
0 l
12.
478 28.
35
"~
~
13.
480 29.
366 i
J 14.
117 30.
432 15.
478 31.
461 16, 485 INSTRUCTIONS:
on th - format, l'st the average daily unit power level in MWe-Net for es day in the reporting month.
Compute to the nearest whole escavatt.
VYDPr 0411.02 DP 0411 Rev. 2 l
Page 1 of 1 RT No. 13.rO1.18V 1
J UNIT $NUTDOWNS AND POWER REDUCTIONS DOCKET No 50-271 REPORT MONTH AUGUST UNIT NAME Yermont Yankee DATE 890910 COMPLETED BT G.A. Wallin TELEPHONE ( 8 0 2 p 257 -7711 1
2 Method of License Syst.es Component I Cause and Corre : ive No.
unto Type Duration Reason Shutting Down Event Code Code Action to (hours)
Reactor 3
Reporth 4
5 Prevent Recurrenc.-
48-14 880814 5
0.00 N
4 N/A 38 CONROD Power reduction for a Control Rod Power Pattern Adjustment Reduction 86-15 480824 5
0.00 s,n*
4 N/A Rn ComRoD Control Rod esercasing and a Rod Power Pettern Exchange.
Reduction 48-16 a&us24 r
50.22 A
3 N/A Cr VALVE 4 increase in pramary system leakage caused by a packing lesk of RHR46A valve.
Valv+ was repacked.
&&-17 440827 r
$2.9)
A 1
N/A Cr V A L.' EX Unacceptable primary system leakags caused by packing leakage of RERIS
&nd 88 valves.
Valves were repacked.
88-14 880830 S
0.00 H
4 N/A kB CONROD Power redu7tton for & Control Rod Power Pattern Adjustment Reduction 1 r: Forced 2 Raassa:
3 Method:
e Exhibit G-Instructions S: Scheduled A-Equipment railure (Explain) 1s Manual for Preparation of Data B-Maintenance or Test 2-Manual Scram Entry Sheets for Licenseo C-Refueller 3-Automatic Scram Event Report (6ER) File D-Regulateay Restriction 4-Other (Explain)
E-Operator Training and L conse Emanination F-Admiristrative 5 Enhabit I - Same Source VfDPr 0411.03 G-Ope r a' ien a l scror (Emplain)
M-(Emplaint Control Rod Pattern Exchange DF 0411 Rev. 2 Page 1 of 1 RT No.
13.F01.18W
DOCKET NO. 50-271 UNIT _ Vermont Yankee DATE_880910 COMPLETED BY G.A.
Wallin TELEPHONE _(802)257-7711 REPORT MONTH August
SUMMARY
OF OPERATING EXPERIENCES Highlights Vermont Yankee operated at 83.5% of rated thermal power for the month.
Gross electrical generation was 319,539 MWHe or 79.5% design electrical capacity.
Operating 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 vaa operating at 99.7%
of rated tnermal power.
880814 At 0110 hours0.00127 days <br />0.0306 hours <br />1.818783e-4 weeks <br />4.1855e-5 months <br />, reduced power to 75% to perform a rod pattern adjustment. (See Unit Shutdowns and Power Reductions) 880814 At 0300 hours0.00347 days <br />0.0833 hours <br />4.960317e-4 weeks <br />1.1415e-4 months <br />, completed the rod pattern adjustment and began a return to full power.
080824 At 0330 hours0.00382 days <br />0.0917 hours <br />5.456349e-4 weeks <br />1.25565e-4 months <br />, initiated a power reduction to minimum recirculation flow to perform control rod exercising,a rod pattern exchange and investigate the cause of drywell leakage.
880824 At 0515 hours0.00596 days <br />0.143 hours <br />8.515212e-4 weeks <br />1.959575e-4 months <br />, initiated control rod exercising.
(See Unit Shutdowns and Power Reductions) 080824 At 0605 hours0.007 days <br />0.168 hours <br />0.001 weeks <br />2.302025e-4 months <br />, completed control rod exercising, and initiated a rod pattern exchange.
(See Unit Shutdowns and Power Reductions) 880824 At 0715 hours0.00828 days <br />0.199 hours <br />0.00118 weeks <br />2.720575e-4 months <br />, completed the rod pattern exchange.
880824 At 1000 hours0.0116 days <br />0.278 hours <br />0.00165 weeks <br />3.805e-4 months <br />, manually shutting down to make repairs on the RHR46A valve which we.s causing primary system leakage.
(See Unit shutdowns and Power Reductions) 880824 At 1146 hours0.0133 days <br />0.318 hours <br />0.00189 weeks <br />4.36053e-4 months <br />, turbine-generator removed from the grid, t
880824 At 1405 hours0.0163 days <br />0.39 hours <br />0.00232 weeks <br />5.346025e-4 months <br />, the reactor was sub-critical.
880826 At 1608 hours0.0186 days <br />0.447 hours <br />0.00266 weeks <br />6.11844e-4 months <br />, the reactor was critical and a return to full power 1
was initiated.
1 880827 At 0415 hours0.0048 days <br />0.115 hours <br />6.861772e-4 weeks <br />1.579075e-4 months <br />, the reactor was sub-critical to repair unacceptable primary system leaks originating from the RHRl8 and 88 valves.
(See Unit shutdowns and Power Reductions) 880828 At 0718 hnurs, the reactor was critical and a return to full posee was initiated.
080820 At 1855 hours0.0215 days <br />0.515 hours <br />0.00307 weeks <br />7.058275e-4 months <br />, the turbine-generator was phased to the grid.
880830 At 1710 hours0.0198 days <br />0.475 hours <br />0.00283 weeks <br />6.50655e-4 months <br />, reduced power to 62% to perform 3 rod pattern adjustment.
(See Unit Shutdowns and Power Reduce. ions) 880830 At 1920 hours0.0222 days <br />0.533 hours <br />0.00317 weeks <br />7.3056e-4 months <br />, completed the rod pattern adjustment and began a return to full power.
l At the end of the reporting period the plant was operating at_99.8% of l
rated thermal power.
VYDPF 0411.04 DP 0411 Rev. 2
-l Page 1 of 1 RT No. 13.F01.18X
.o.s ff VERMONT YANKEE NUCLEAR POWER CORPOR ATION P. O. BOX 157 GOVERNOR IIUh"r ROAD VERNUN, VERMONT 05354 September 10, 1988 VYV 88-189 U.S.
Nuclear Regulatory Commission 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 August, 1988.
Very truly yours, VERMONT YINKEE NUCLEAR POWER CORP.
$t w f ', )
l Warren Murpby Vice President a Managet of Operat ns l
cc:
- 1) USNRC l
Region I 475 Allendhle Road King of Prussia, PA 19406
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