ML19209D089

Monthly Operating Rept for Sept 1979

ML19209D089
Person / Time
Site:	North Anna
Issue date:	10/10/1979
From:	Wil Madison VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
Shared Package
ML19209D087	List: ML19209D086 ML19209D089
References
NUDOCS 7910190381
Download: ML19209D089 (5)

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VIRGINIA ELECTRIC AND POWER COMPANY NORTH ANNA POWER STATION

MONTHLY OPERATING REPORT

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MONTH Sept. YEAR 1979

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SUBMITTED:

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SUPERulJTB DENT - OPERATIONS '

APPROVED: .

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1175'262 7910190 3 8 [

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1 OPERATING DATA REPORT

'I DOCKET NO. 50-338 Qf DATE 10-10-79 P00 0 j'(p ( COMPLETED BY Uf P Marl snn TEl.EPHONE 703-6%-5 5T OPERATING STATUS North Anna, Unit 1 Notes

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'y, . septeir.oer, 4 8/ 3

3. Licensed Thermal Power (MWt): 2775 ,

4. Nameplate Rating (Gross MWe): 947 -

5. Desagn Elecmed Rating (Net MWe): 907

6. Maximum Dependable Capacity (Gross MWe):

920

7. Maxmnam DM m ev.sc-ty tyes MWe): 090

8. If C',- Oc= r in C2cac:ry Racags (Items Sumber 3 Through 7) Since Last Report, Give Reasons:

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N/A

9. Power Levei To Whkh R--d. If Any (Net MWe): N/A

10. Reasons For Restrictions. If My: N/A

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This Month Yr. to Date Cumulative

11. Hours In Reporting Pedod 720 6.552 11.569

12. Number Of Hours Reactor Was Critical 582.2 5,478.4 10,525.2

13. Reactor Reserve Shutdown Hours 2.8 14.6 14.6

14. Hours Generator On-Line 582.2 5,401.4 10,053.1

15. Unit Reserve Shutdown Hours 0 0 0 .

16. Gross Thermal Energy Generated (MWH) 1.134.368 21.083.118 26.279.913

17. Gross Electrical Energy Generated (MWH) 345,793 __ 4.445.776 8.346.349

18. Net Electrical Energy Generated (MWH) 320,744 4,188.866 7,853,446

19. Unit Service Factor 80.7 82.4 86.9

20. Unit Availability Factor 80.7 82.4 86.9

21. I Mr Capacity Factor (Using MDC Net) 49.6 71.2 75.6 L Unit Capacity Factor (Using DER Net) 49.I 70.5 74.8

23. Unit Forced Outage Rate 0.5 15

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

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25. If Shut Down At End Of Report Period. Estimated Date of Startup: December 17. 1979

26. Units in Test Status (Prior to Commercial Operation): Forecast Achieved

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INITIA L CRITICALITY INITIAL ELECTRICITY COMMERCIAL OPERATION

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1 AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-338 g.3 NA 1 10-10-79 om

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' COMPLETED BY W. R. Madison TELEPHONE 703-894-5151

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September 1979 MONTH DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (M % %O (MWe-Net)

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17 252

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2 747 18 389 3 737 9 452 730 563 4 20

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745 630 5 21 6 736 22 420 7 730 23 282 8

718 650 24 9 20 25 164 jo 702 0 26 -

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11 694 -

27 0 ,

i ,- 640 / 0 28 13 294 29 0 14 238 30 0 128 15 38 241

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INSTRUCTIONS On this format. list the average daily unit power levelin MWe Net for each day in the reporting month. Compute to the nearest whole megawatt.

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- 50-338

• UNITSilUTDOWNS AND POWEft REDUCTIONS IWCKF NO DALE 10-10-79 ItEPoltI hl0 Nill _Sep_tembe[ l979

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.E E 3 _ jf l.icensee [j t,, Cause & Corrective No. Date

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Q 3g @ ) y @5> Event gg .t. Adlon to F

$$ $ gjj Repost it MU j] Prevent Recurrence d

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79-14 790912 S 0 F* 4* N/A N/A N/A Ramped down to 35% reactor power in '

preparation for extended period of ope' ration beyond 9/15/79 pending amendment of NPF-4.

79-15 790921 F 0 B* 4* N/A N/A N/A Ramped down to 28% reactor power to perform turbine valve freedom test.

Testing was performed & the reactor s was escalated to 80%.

79-16 790925 F 2.8 A* #*\' LER/R0 79-120 SF VALVEX Automatic Rx Turbine Generator trip due to iiigh level in the extraction steam side of the 58 feejwater heater The plant is presently shutdown & th 2 cooler will be repaired.

79-16 790925 S 135 C* 4* N/A N/A N/A Commenced scheduled refueling outage .

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" Method: Exhibit G -Instructions F: Foiced Reason:

'I t Scheduled A Equipm:nt Failure (Explain), I-Manual for Preparation of Data s LTl .u Maintenancy of Test 2-Manual Scram. Entry. Sheets for Licensee C. Refueling ' 3 Automatic Scram. Event ReporI (LElt) File (NURI:G.

N D-Regulatory Itestilction 4-Other (Explain) 0161)

& E-Operator Training & License Examinalion

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w F-Administ rative G-Operational Eiror (Explain) 5 Exhibit I . Same Source (9/77) Il-Ottie r (E xplain) '

• See attached sheet Shutdown 79-17 continued into October.

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UNIT SHUTDOWN Atl0 P7.4ER REDL'CTIONS '

EXPLANATION SHEET DOCKET NO. 50-338 REPORT MONTH September UNIT NAME North Anna YEAR 1979 DATE 10-10-79 COMPLETED BY W. R. Madison 79-14 (F) (4) The reactor was operating in the end of cycle 1 coastdown:

Reactor pawer was decreased to extend the cycle to October' 5,1979

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pending NRC approval. A.mendment 15 to NPF-4 was approved. Subsequent analysis indicated that reactor power could be increased back to maximum attainable. Reactor power was increased to approximately 80%.

79-15 (B) (4) Reactor power was decreased to establish the required conditions for turbine valve testing. The required testing was completed and reactor pcwer was escalated to 80%. The reactor was not shutdown.

79-16 (A) (3) The 5th peint heater drain cooler dump valve LCV-SD-128B began to

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cycle due to a tube ru'pture inside the cooler. The leakage was more can the capability of the drain valves causing extraction steam ccndensate to back up into the 5th point heater to the turbine trip setpoint. This resulted in an automatic Reactor Tur' ine Generator trip. The heater drain cooler tubes will be replaced during the "

current outage.

79-17 (C) (4) Cermenced the scheduled refueling outage at 0900 Septecher 25, 1979.

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The reactor was already shutdown from event 79-16.

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