ML19253B565

Monthly Operating Rept for Sept 1979

ML19253B565
Person / Time
Site:	Maine Yankee
Issue date:	10/12/1979
From:	Sjogren R Maine Yankee
To:
Shared Package
ML19253B561	List: ML19253B560 ML19253B565
References
NUDOCS 7910160412
Download: ML19253B565 (4)

Text

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OPERATING DATA REPORT

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DOCKET NO. 50-309 DATE 79-10-12 CO31PLETED BY R.M.

Siogren TELEPHONE (617) 366-9011 X2281 OPERATING STATUS

1. Unit Name:

Maine Yankee Notes

2. Reporting Period:

September 1979

3. Licensed Thermal Power (h!Wt):

2,630 864

4. Nameplate Rating (Gross 31We):

5. Design Electrical Rating (Net 51We):

823 850

6. Sf aximum Dependable Capacity (Gross 5fWe).

7. Slaximum Dependable Capacity (Net SIWE):

810

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

9. Power Level To which Restricted,if Any (Net 31We):

864 (970

10. Reasons For Restrictions. If Any:

Power level restricted bv steam flow through the LP turbines.

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This $1onth Yr..to.Date Cumulative

11. Hours In Reporting Period 720 6,551

12. Number Of Hours Reactor Was Critical 91.8 4,003.27 49,046.89

13. Reactor Reserve Shutdown Hours 0

0 0

14. Hours Generator On.Line 13.7 3,848.99, 47',372.16

15. Unit Reserve Shutdown Hours 0

0 0

16. Gross Thermal Energy Generated (31WH) 15.230 9.316,320 100,430,681

17. Gross Electrical Energy Generated (%IWH) 4,460 3.104,290 32,972,100

18. Net E!ectrical Energy Generated (51WH) 351 3,015,845 31,304,041 4,

19. Unit Service Factor 1.9 58.6 78.4

20. Unit Availability Factor 1.9 58.6 78.4 8

5d 67.5

21. Unit Capacity Factor (Using 31DC Net)

22. Unit Capacity Factor (Using DER Net)

.73 55.8 65.2

23. Unit Forced Outage Rate 0

34.1

'7.1

24. Shutdowns Scheduled Over Next 6 Stonths (Type. Date.and Duration of Each1:

None.-

25. If Shut Down At End Of Report Period. Estimated Date of Startup: October 1, 1979

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

Fore ast A:hieved INITIAL CRITIC.C ITY lI54 135 INITIAL ELECTRICITY CON!>tERCIAL OPERAT!ON (4/77) 7T '80 WA

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.

50-309 UNIT Maine Yankee DATE 79-10-12 C051PLETED BY R. M. Sjogren TELEPHONE (617) 366-9011 X2281 September 1979 MONT11 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY P0hER LEVEL (MWe-Net)

(MWe Net)

I 181 37 0

2 0

33 0

3 0

39 0

4 0

0 20 5

0 21 0

6 0

0 22 k

7 0

0 33 S

0 0

34 9

0 25 0

10 0

26 0

11 0

27 0

12 0

0 23 13 0

0 29 14 0

30 0

I5 0

3g 0

16 0

3 INSTRUCTIONS On this format. list the average daily unit power leselin MWe Net for e:ch day in the reporting month. Compute to the nearest whole megswart.

v-01/771 1154 136

f UNITSilUIDOWNS AND POWEft REDUCTIONS DOCKET NO.

50-309 UNIT NAME Maine Yankee DALE 79-10-12 REP 0ftT MONTil Sept. 1979 COAfPLETED igy R.

M.

Slogren TELEPil0NE (617) 366-9011 X2281 "L

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Y Licensee Eg h,

Cause & Corrective No.

Date g

3g

,g g 5 Event g

a.'8 Action la

$E 5

5gc Repori

• va O gu Prevent Recursence F

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79-4 9-1-79 S

706.60 B&D 1

NA Cil PIPEXX-D Scheduled shutdown to perform feed-thru water piping inspections required by 9-30-79 IE Bulletin No. 79-13 plus additional scheduled maintenance.

• O I

2 3

4 F: Foned Reason:

Method:

Ext;ibit G. Insituctions S. Scheiluleil A Fquipment Failure (Explain) 1 Manual for Picparation of Data Ilflaintenance oi Test 7 Manual Scram.

Entry Sheets f or I.ieensee C Relocling 3 Automatic Scram.

Evens Itepost (l.ERI File (Nultl.G-LA I) Itegulatmy itest iction 4-Other (lixplain) 01611

-a li-Opes.itor Training 1 License I!xamination F Aitminiusatiw 5

G Opesalinnal I nos (l'xplam)

Ps/17) u II (lihes (lixplain) lininhis I Same Source NJ O

DOCKET NO.

50-3G9 UNIT Maine Yankee DATE 79-10-12 COMPLETED BY R. M. Sjogren TELEPHONE (617) 366-9011 X2281 REPORT MONTH September 1979 SU'elARY OF OPERATING EXPERIENCES At the beginning of the month the plant commenced a load reduction from full load (197%) in preparat. ion for a scheduled four-week maintenance outage. By 1324 hrs. on September 1 the unit was off-line and by 1620 hrs. the reactor was subcritical.

Following shutdown the plant was cooled down and maintenance activities commenced. Some of the major maintenance items accomplished were as follows:

1.

Feedwater line inspection IAW IE Bulletin No. 79-13.

2.

Replacement on #1 RCP seal cartridge.

3.

Tie in of the repaired main transformer which failed in August of 1978.

4.

Retubing of 2 of the 4 condenser waterboxes using new SS tubes.

Following completion of the planned maintenance, the reactor was taken critical on September 27 and the unit phased to the grid on October 1.

il54 138

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