ML19284A711

Monthly Operating Rept for Feb 1979

ML19284A711
Person / Time
Site:	Beaver Valley
Issue date:	03/06/1979
From:	Spitznogle A DUQUESNE LIGHT CO.
To:
Shared Package
ML19284A710	List: ML19284A709 ML19284A711
References
NUDOCS 7903150232
Download: ML19284A711 (5)

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OPERAT!NG DATA REPORT DOCKET NO. 50-334 DATE 3/6/79 C051PLETED BY A.E.Soitznogle TELEPIIONE. 41' A43- 5023 OPERATING STATUS

1. Unit Name: Beaver Valley Power Station, Unit #1 Notes

2. Reporting Period: February, 1979

3. Licensed Thermal Power (51Wr): 2A6n

4. Nameplate Rating (Gross 5tWe): 923

5. Design Electrical Rating (Net 51We): 852

6. Sfaximum Dependable Capacity (Gross hiWe): 862

7. Sf aximum Dependable Capacity (Net 51We): 817

8. If Changes Occur in Capacity Ratings (Items Number 3 Through 7) Since Last Report, Give Reasons:

9. Power Level To Which Restricted,If Any (Net 51We): None

10. Reasons For Restrictions,if Any:. N/A This 5fonth Yr. to Date Cumulative

11. Hours In Reporting Period 672 1,416 24,816

12. Number Of Hours Reactor Was Critical 636.10 1,003.35 11,199.42

13. Reactor Reserve Shutdown Hours 0 0 4,482.80

14. Ilours Generator On Line 621.17 960.33 10,564.50

15. Unit Reserve Shutdown Hours 0 0 0

16. Gross Thermal Energy Generated (51WH) 1,433,040.04 2,221,004.91 23.089.394.86

17. Gross Electrical Energy Generated (5f WH) 467,500 723,900 7.062,640

18. Net Electrical Energy Generated (hiWH) 438,237 672,816 6,465,184

19. Unit Service Factor 92.4 67.8 49.1

20. Unit Availability Factor 92.4 67.8 49.1

21. Unit Capacity Factor (Using Af DC Net) 79.8 55.1 39.7

22. Unit Capacity Factor (Using DER Net) 76.5 _

55.8 40.2

23. Unit Forced Outage Rate 7.6 , 33.0 38.6

24. Shutdowns Scheduled Over Next 6 hionths (Type. Date.and Duration of Each):

Major Modification and Refueling Outane on April 23. 1979.

25. If Shut Down At End Of Report Period. Estimated Date of Startup:

26. Units In Test Status (Prior to Commercial Operation): Forecast Achieved INITIAL CRITICALITY N/A N/A INITIA L ELECTRICITY N/A N/A C05151ERCIAL OPERATION N/A N/A 7903150 2 O

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DOCKET NO 50-334' UNIT SilUTDOWNS AND POWER REDUCTIONS UNIT NAME EVPS Unit #1 DATE 3/6/79 COMPLETED BY A.E. Spitznogle REPORT MONTil February, 1979 TELEPilONE 412-643 .5023

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c No- Date

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.! E 3 y Y"d Licensee h ' 51h Cause & Curreceive

'k 3g 4 2s5 Event g7 Atilon to

• f: $ j;g Repors = :n U EU Preveni Recurrence c .

7 790205 F 2.03 A 3 None CB MOTORX Current Transformer shorting switch was manually closed, which cpen circuited the secondary of the current transformer. This caused a voltage surge, apparently tripping the "C" Reactor Coolant Pump on undervoltage.

This tripped the reactor. The Current Transformer shorting knife switches were caution tagged open.

8 790207 F 4.60 E 1 None CH VALVEX Maintenance unable to pack feedwater regulation valves. Reactor, brought to hot zero power condition for valve packing. Plant was then placed back

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on line.

9 790226 F 44.20 j 1 ZZ ZZZZZZ Reactor shutdown due to high wat.er level (>680') in Ohio River. Unit '

returned to service after water level decreased.

I 2 3 4 F: Forced Reason: Method: Exhibit G. instructions S: Schedu!cd A Equipment Failure (Explain) 1 Manual for Prepar,nion of Data B. Maintenance of Test 2-Manual Scram. Entr> Sheets for Licensee C Refueling 3 Automatic Scram. Event Report (LER) File (NUREG D Regulatory Restriction 4 Other (Explain) 0161)

I: Operato: Training & License Examination 17 Adnunhtsalive

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5 G Operational Einor (Explain t E shibii ! - Same'Souice 19/77) Il-Osher (Explain)

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AVERAGE DAIL UNIT POWER LEVEL DOCKET NO. 50-334 UNIT BVPS Unit #1 DATE 3/6/79

~ COMPLETED BY A.E.Spitznogle TELEPHONE 412-643-5023 February, 1979 MONTil DAY AVERAGE D.All PO VER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)

I 321 17 729' 2 739 18 734 3 825 733 19 4 812 20 742 5

599 y 747 713 751 6 22 7 303 y 742 8 808 747 24 9 812 742 10 697 26 344 II 758 ,27 0-12 741 -

427 28 13 626 29 14 647 30 15 733 31 16 713 INSTRUCTIONS On this format. list the average daily unit power lesel in MWe. Net for each day in the reporting month. Compute to the nearest whole megawatt.

(9/77)

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DUQUESNE LIGHT COMPANY Beaver Valley Power Station a

Narrative Summary Of Operating Experience - February, 1979 bate Event February 1 and Station was in Operational Mode 1 at 30% power level due to February 2 a packing failure on the 1A Main Feedwater Regulating Valve.

Axial nuclear flux tilt penalty of 145 minutes was accumulated so power level was maintained less than 50% to clear the penalty. Commenced power escalation to 50% power at 0545 hours0.00631 days <br />0.151 hours <br />9.011243e-4 weeks <br />2.073725e-4 months <br />.

Penalty was cleared and power escalation commenced at 0210 hours0.00243 days <br />0.0583 hours <br />3.472222e-4 weeks <br />7.9905e-5 months <br /> on February 2. The 1A Heater Drain Pump [SD-P-1A] was i

removed from service because of problems with the pump seals at 1000 hours0.0116 days <br />0.278 hours <br />0.00165 weeks <br />3.805e-4 months <br />. ,

February 3 and Station was in Operational Mode 1 with the reactor at full power.

February 4 l February 5 The station was at full power until 1434 hours0.0166 days <br />0.398 hours <br />0.00237 weeks <br />5.45637e-4 months <br />. The 1C Beactor Coolant Pump had a spurious trip during the troubleshooting of the 4KV motor overload thermal relays, causing a reactor trip.

The reactor was critical at 1548 hours0.0179 days <br />0.43 hours <br />0.00256 weeks <br />5.89014e-4 months <br /> and the main unit was synchronized at 1636 hours0.0189 days <br />0.454 hours <br />0.00271 weeks <br />6.22498e-4 months <br />.

February 6 and Station in Operational Mode 1 with the reactor at full power.

February 7 Commenced power reduction at 2000 hours0.0231 days <br />0.556 hours <br />0.00331 weeks <br />7.61e-4 months <br /> to permit repacking the 1B and 1C Main Feedwater Regulating Valves, stabilizing at 25%

power by 2115 hours0.0245 days <br />0.588 hours <br />0.0035 weeks <br />8.047575e-4 months <br />. Because of inability to achieve tight shutoff with the manual isolation valves around the feedwater regulating valves, the unit was taken off the line at 0037 hours4.282407e-4 days <br />0.0103 hours <br />6.117725e-5 weeks <br />1.40785e-5 months <br /> on February 7. Repacking and valve checks were completed and the main unit was synchronized at 0513 hours0.00594 days <br />0.143 hours <br />8.482143e-4 weeks <br />1.951965e-4 months <br />. At 0745 hours0.00862 days <br />0.207 hours <br />0.00123 weeks <br />2.834725e-4 months <br />, power was reduced below 50% when the delta flux remained outside the target band more than 60 minutes. The delta flux penalty was less than 60 minutes by 2115 hours0.0245 days <br />0.588 hours <br />0.0035 weeks <br />8.047575e-4 months <br />, and a reactor power increase was commenced. Reactor power had reached 96% by 2300 hours0.0266 days <br />0.639 hours <br />0.0038 weeks <br />8.7515e-4 months <br />.

February 8 and Station in Operational Mode 1 at full power.

February 9 February 10 Station in Operational Mode 1 with reactor at full power. At 0146 hours0.00169 days <br />0.0406 hours <br />2.414021e-4 weeks <br />5.5553e-5 months <br />, power level was reduced to 60% because the heater drain tank level controller [LCV-SD-106B] was malfunctioning.

Power increase was commenced at 1015 hours0.0117 days <br />0.282 hours <br />0.00168 weeks <br />3.862075e-4 months <br /> after controller repairs. A suspected tube leak in the main condenser section A was reported at 1520 hours0.0176 days <br />0.422 hours <br />0.00251 weeks <br />5.7836e-4 months <br /> and, at 2040 hours0.0236 days <br />0.567 hours <br />0.00337 weeks <br />7.7622e-4 months <br />, power was reduced to 70% to isolate the suspected leak. When the condenser section had been isolated, power was increased to 95% power level.

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, . Narrative Summary Of Operating Experience - February, 1979 (continued)

Date Event February 11 Station in Operational Mode 1 with the reactor at 95% power,

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increased to maximum by mid-day. Experienced problems with the heater drain pump discharge control valve [LCV-SD-106B) at 1536 hours0.0178 days <br />0.427 hours <br />0.00254 weeks <br />5.84448e-4 months <br />. Reduced power to 76% during controller repairs.

At 1710 hours0.0198 days <br />0.475 hours <br />0.00283 weeks <br />6.50655e-4 months <br />, increased power to 90%. Power level was maintained at 90% due to the unreliable operation of the heater drain system level controller.

February 12 Station in Operational Mode 1 with the reactor at 90% power.

Load increase to 100% power was started at 1442 hours0.0167 days <br />0.401 hours <br />0.00238 weeks <br />5.48681e-4 months <br /> after venting the 1C Cooling Tower Pump.

February 13 Station in Operational Mode 1 at full power. At 0133 hours0.00154 days <br />0.0369 hours <br />2.199074e-4 weeks <br />5.06065e-5 months <br />, malfunction of the heater drain pumps discharge control valve

[LCV-SD-106B] required reducing power to 75%.

February 14 to Station in Operational Mdde 1 at 76% power. Increased to 90%

February 23 power at 1300 hours0.015 days <br />0.361 hours <br />0.00215 weeks <br />4.9465e-4 months <br /> on February 14. Maintained a 90% power level.

February 24 and Station in Operational Mode 1 at 90% power. The Ohio River February 25 elevation exceeded 670 feet at 0110 hours0.00127 days <br />0.0306 hours <br />1.818783e-4 weeks <br />4.1855e-5 months <br />, so the two-hour surveillance measurements were started. Maintained 90% pcwer and river flood watch surveillance.

February 26 Station in Operational Mode 1 at 90% power with the flood watch surveillance in effect. The Ohio River level reached 680 feet at 0633 hours0.00733 days <br />0.176 hours <br />0.00105 weeks <br />2.408565e-4 months <br /> and preparations for an orderly shutdown commenced.

The main' unit was taken off the line at 1157 hours0.0134 days <br />0.321 hours <br />0.00191 weeks <br />4.402385e-4 months <br /> and the Station entered Operational Mode 3.

February 27 Station in Operational Mode 3, shutdown due to river elevation

. Technical Specifications 3.7.6.1 requirements. At 0400 hours0.00463 days <br />0.111 hours <br />6.613757e-4 weeks <br />1.522e-4 months <br />, decreasing level in the Ohio River reached 680 feet.

Preparations underway for station startup.

February 28 Station startup in progress. Synchronized the main unit at 0809 hours0.00936 days <br />0.225 hours <br />0.00134 weeks <br />3.078245e-4 months <br /> and stabilized at 90% power at 1140 hours0.0132 days <br />0.317 hours <br />0.00188 weeks <br />4.3377e-4 months <br />.

Major Safety Related Maintenance - February, 1979

1. Replaced the high voltage power supply for excore detector N-41.

2. Overhaul and installation work on the replacement lA Charging Pump was performed from February 12 through February 17 and from February 20 through February 24.

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