ML20091L004

Monthly Operating Rept for Apr 1984

ML20091L004
Person / Time
Site:	Beaver Valley
Issue date:	04/30/1984
From:	Carey J, Holtz J DUQUESNE LIGHT CO.
To:	NRC OFFICE OF RESOURCE MANAGEMENT (ORM)
References
NUDOCS 8406070287
Download: ML20091L004 (8)

Text

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NARRATIVE

SUMMARY

OF MONTHLY OPERATING EXPERIENCE - AFRIL, 1984 April 1 The station was in operational mode 1 with reactor power a nominal through 100%. The reactor coolant system was at normal operating temperature April 7 and pressure.

April 8 The station was in operational mode 1 with reactor power a nominal 100%. At 2015 hours0.0233 days <br />0.56 hours <br />0.00333 weeks <br />7.667075e-4 months <br />, the standby heater drain pump started auto-

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matically due to a high level ~in the heater drain tank. Local investigation revealed that the heater drain tank normal level control valve had a broken stem. The plant stabilized itself and the level in the heater drain tank was being controlled by the high

. level control valve.

At 2021 hours0.0234 days <br />0.561 hours <br />0.00334 weeks <br />7.689905e-4 months <br />, a reduction in reactor power was begun in order to shutdown the heater drain pumps and isolate the level control valve.

At 2130 hours0.0247 days <br />0.592 hours <br />0.00352 weeks <br />8.10465e-4 months <br />, reactor power was stabilized at 38% and both heater drain pumps were shutdown.

April 9 The station was operating at reduced power while repairs were being made to the normal level control valve on the heater drain tank.

At 0537 hours0.00622 days <br />0.149 hours <br />8.878968e-4 weeks <br />2.043285e-4 months <br />, a check'of steam generator cation conductivity re-vealed a possible tube leak in the main condenser. After confirming the existence of a leak in the 1A condenser waterbox, reactor power was reduced to 30%. At 0608 hours0.00704 days <br />0.169 hours <br />0.00101 weeks <br />2.31344e-4 months <br />, due to high steam generator cation conductivity, the station entered operational mode 2. The output breakers on the main unit generator were opened at 0715 hours0.00828 days <br />0.199 hours <br />0.00118 weeks <br />2.720575e-4 months <br />.

Work began on isolating the 1A main condenser waterbox. At 1230 hours0.0142 days <br />0.342 hours <br />0.00203 weeks <br />4.68015e-4 months <br />, condenser vacuum was broken to allow a clearance to be placed on the 1A waterbox. A bleed and feed operation was begun on the condenser hotwell to reduce cation conductivity. By 1740 hours0.0201 days <br />0.483 hours <br />0.00288 weeks <br />6.6207e-4 months <br />, hotwell chemistry had improved sufficiently to allow station startup.

Condenser vacuum was drawn and the main unit generator output breakers were closed at 2220 hours0.0257 days <br />0.617 hours <br />0.00367 weeks <br />8.4471e-4 months <br />.

April 10 The station was in operational mode 1 with reactor power being main-tained at 28%. Repairs were being made to the heater drain tank normal level control valve, LCV-SD-106A, and the 1A condenser water-box was isolated for the plugging of leaking tubes.

I At 0230 hours0.00266 days <br />0.0639 hours <br />3.80291e-4 weeks <br />8.7515e-5 months <br />, repairs were completed on LCV-SD-106A and the valve was stroked successfully. Reactor power was steadily increased until 0445 hours0.00515 days <br />0.124 hours <br />7.357804e-4 weeks <br />1.693225e-4 months <br /> when the increase was halted at 82% upon reaching a AT of 30*F across the 1D condenser waterbox. Reactor power was reduced to 65% at 0720 hours0.00833 days <br />0.2 hours <br />0.00119 weeks <br />2.7396e-4 months <br /> due to a high AT across the IB con-denser waterbox. Power was increased back to 75% at 1115 hours0.0129 days <br />0.31 hours <br />0.00184 weeks <br />4.242575e-4 months <br />.

The lA condenser waterbox was returned to service at 1847 hours0.0214 days <br />0.513 hours <br />0.00305 weeks <br />7.027835e-4 months <br /> and

a reactor power increase was begun. A nominal 100% reactor power was reached at approximately 2400 hours0.0278 days <br />0.667 hours <br />0.00397 weeks <br />9.132e-4 months <br />. ,

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8406070287 840430 -'1 PDR ADOCK 05000334 R PDR

b April 11 The station was in operational mode 1 with reactor power a nominal through 100%. The reactor coolant system was at normal operating temperature.

. April 30 and pressure.

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OPERATI G DATA REPORT DOCKET NO. 50-334 DATE May 3, 1984 COMPLETED BY .7- L. Holtz TELEPHONE. 412 'L3-OPERATING STATUS

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

2. Reporting Period:

3. Licensed Thermal Power (MWt): 2660

~4. Nameplate Rating (Gross MWe): 923

5. Design Electrical Rating (Net MWe): 835

6. Maximum Dependable Capacity (Gross MWe): 860

7. Maximum Dependable Capacity (Net MWe): 810

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

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9. Power LevelTo Which Restricted,if Any(Net MWe): None

10. Reasons For Restrictions.lf Any:. N/A This Month Yr to.Date " Cumulative

11. Hours in Reporting Period 719 2,903 70,127

12. Number Of Hours Reactor Was Critical 719 2 704 7 33,584.1

-13. Reactor Rese ve Shutdown Hours 0 0 4,482.8

14. Hours Generator on-Line vn,_a 2,541.4 37,370.7

15. Unit Reserve Shutdown Hours 0 0 0

16. Gross Thermal Energy Generated (MWH) 1.815,222 6,442,153.2 74,031,691.7

17. Gross Electrical Energy Generated (MWH) 587,000 2,087,500 23,516,440

18. Net Electrical Energy Generated (MWH) 551,750 1,962,165 21,851,053

19. Unit Service Factor 47.9 87.5 48.3

20. Unit Availability Factor 97.9 87.5 48.3

21. Unit Capacity Factor (Using MDC Net) 94.7 83.4 42.0

22. Unit Capacity Factor (Using DER Net) 91 0 90 9 40.7

23. Unit Forced Outage Rate 2.1 3.9 29.3

24. Shutdowns Scheduled Over Next 6 Months IType.Date.and Duration of Eacht:

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

26. Units in Test Status (Prior to Commercial Operation): Forecast Achieved INITIA L CRITICA LITY '7 / A - N/A INITIAL ELECTRICITY N/A N/A COsl%IERCIA L OPERATION N/A N/A (9/77)

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AVERAGE DAll UNIT POWER LEVEL DOCKET NO. 50-334

' UNIT BVPS Unic #1 DATE May 3, 1984 COMPLETED BY T t- un 1 "

_ _. TELEPHONE (412) 64;'-13E MONTH Aoril DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-NetI (MWe-Net) g '825 783

, 37 2 784 Is 825 3 784 19 825 _ , . ,

4 825 20 783 5 784 826 23 f 825 22 825 7 783 23 784 3 743 24 825 9 130 23 783 10 538 26 785 11 m 27 7Ai l

l2 784 gg 826 I

i g3 784 39 777 l

l4 825 30 '783 15 784 31

. 16 784 I

l j INSTRUCTIONS On this formst. !tst the average d: aly unir ; ower le.d :n MWe. Net far e:ch day on the recortinc montn. Compute to the ne: rest wnuie mepwatt.

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- MAJOR MAINTENANCE - APRIL,'1984

1. Repaired sheared valve stem on heater drain tank normal level control

- valve (LCV-SD-106B)

' 2. Plugged var'ious tubes identified to be leaking in the' main condenser lA waterbox. .

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t NNITSilUTDOWNS AND POWER REDUCTIONS DOCKET NO.

50-334 UNIT N AhlE IIVI'S Unit II I) ATE S/3/84 REPORT hlON~Ill April COMPLETED llY _J. L. Holtz TEl.ErilONE .(412) 643-1369

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6 04/09/84 F 15.1 A 1 N/A HF HTEXCH A tube leak in the main condenser's lA waterbox was discovered at 0537 hours0.00622 days <br />0.149 hours <br />8.878968e-4 weeks <br />2.043285e-4 months <br />. The station was taken off-line at 0715 hours0.00828 days <br />0.199 hours <br />0.00118 weeks <br />2.720575e-4 months <br />.due to high cation conductivity in the steam generators.

The lA waterboxgwas isolated and the main unit generator was synchronized to the grid at 2220 hours0.0257 days <br />0.617 hours <br />0.00367 weeks <br />8.4471e-4 months <br />.

l 2 Il faticil Reasun:

3 4 5 St heiln'cil trethod: .lixhibit G . Insanis th ns A l..luipenent Failure (l.spl.iint 1-flanua l ll41aintenant e ei l est ro Picparasion ol' Data 2-Hanual Scram I.:ntry Sheels for I.isentec l' Refueling D Reputator) ltestriction 3-Automatic Scram litent Repost fl.l'Hil ele INllRI G i Opcs.itus Isaining A l.itense I:xaenistation 4-Continne<l From Previous Month Of fil l 5-Rec'uc t ion 1 Ailministrative 9 0ther 5

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RPI MALFUNCTION At 0400 hours0.00463 days <br />0.111 hours <br />6.613757e-4 weeks <br />1.522e-4 months <br /> on the 9th, RPI's for the entire Control Bank D were found to be reading greater than 12 steps above the group demand counters. Primary voltages were read at the process racks and rod B-8 was found to be reading one step out of alignment. The bank was then driven in to 193 steps for delta flux considerations. Primary voltage readings at 0420 hours0.00486 days <br />0.117 hours <br />6.944444e-4 weeks <br />1.5981e-4 months <br /> showed all. rods to be in,alignm,ent. _

The RPI's for Control Bank D were subsequently recalibrated on April 14 through 17, 1984.

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Telephane (412) 393-6000 Nuclear Division P.O. Box 4 Shippingport, PA 15077-0004 May 3, 1984 Beaver Valley Power Station, Unit No. 1 Docket No. 50-334, License No. DPR-66 Monthly Operating Report United States Nuclear Regulatory Commission Director, Office of Management Information & Program Control Washington, D.C. 20555 Gentlemen:

In accordance with Appendix A, Technical Specifications, the Monthly Operating Report is submitted for the month of April, 1984.

Very truly yours, J. J. Carey Vice President Nuclear Division Enclosures cc: NRC Regional Office, King of Prussia, PA 4 \

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