ML20134N504

Monthly Operating Rept for Oct 1996 for Maine Yankee

ML20134N504
Person / Time
Site:	Maine Yankee
Issue date:	10/31/1996
From:	Stewart Bailey, Hebert J Maine Yankee
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
RTR-NUREG-0020, RTR-NUREG-20 JRH-96-254, MN-96-168, NUDOCS 9611270008
Download: ML20134N504 (5)

Text

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e e .

l t i MaineYankee .

, RELI ABLE ELEC TRICITY SINCE 1972 '

329 BATH ROAD + BRUNSWICK. MAINE 04011 + (207) 798-4100 l

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,i-y . . s, m i 1 l

November 19,1996 MN-96-168 JRH-96-254 1

UNITED STATES NUCLEAR REGULATORY COMMISSION Attention: Document Control Desk Washington, DC 20555 l

References:

(a) License No. DPR-36 (Docket No. 50-309)

(b) NUREG-0020, Licensed Operating Reactor Status Summary Report

Subject:

Maine Yankee Monthly Statistical Report - October 1996 l

Gentlemen:

Enclosed please find the October 1996 Monthly Statistical Report for Maine Yankee.

If you have any questions, please do not hesitate to contact me.

l l Very truly yours, i C

%99 James R. Hebert, Manager Licensing & Engineering Support Department SJB l

l Enclosures l

i c: Mr. Hubert Miller Mr. J. T. Yerokun Mr. Daniel H. Dorman Mr. Patrick J. Dostie f Ll r

g I

Mr. Uldis Vanags J '

9611270008 961031

• PDR ADOCK 05000309  !

R PDR

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! OPERATING DATA REPORT Docket No.: 50-399 Date: 19/Nov/96

Completed By

S. J. BAILEY l

Telephone

297-798-4241 i

i

1. Unit Name....................................... Maine Yankee

2. Reporting Period................................ October 1996  !

3. Licensed Thermal Power (NWt).................... 2799

4. Nameplate Rating (Gross NWe).................... 929 i 5. Design Electrical Rating (Net NWe).............. 879 i 6. Maximus Dependable Capacity (Gross MWe)......... 999 i

j 7. Maximum Dependable capacity (Net NWe)........... 869

! 8. If Changes in capacity Ratings (Items Number 3-7)

Since Last Report, Give Reasons:

l MO CHANGES i

i l 9. Power Level to Which Restricted, if Any (Net NWe) 795 i 1@. Reasons for Restrictions, if Any:

l lBy MRC Confirmatory Order dated Jan. 3. 1996. Maine Yankee is restricted to 2449 MWt. A new computer code for Small Break LOCA j -is beina evaluated at Maine Yankee to allow operation to 27ttMWt

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{ I THIS MONTH YEAR-TO-DATE CUMULATIVE I k' 11. Hours In Reporting Period 745.99 7.329.99 i

'12. Number of Hours Reactor l Was Critical........... 666.76 6.922.98 163.969.79 4

13. Reactor Reserve Shutdown

i. Hours.................. 9.99 9.99 9.99

{ 14. Hours Generator On-line.. 669.66 5.724.35_ 158.178.99

} 15. Unit Reserve Shutdown i

Hours.................. 9.99 9.99 9.99 l 16. Gross Thermal Energy j Generated (MWh),....... 1.586.334.99 13.638.997.99 375.582.188.99 1 17. Gross Electrical Inergy i .

Generated (MWH)........ 533.682.99 4.599.986.99 123.888.982.99 3 18. Net Electrical Energy '

i Generated (MWH)........ 515.285.99 4.493.139.99 118.884.538.09 l 19. Unit Service Factor...... 88.68 78.29 75.27

23. Unit Availabilty Factor.. 88.68 78.29 75.27

21. Unit Capacity Factor (Using MDC Net)........ 89.43 69.94 69.84

22. Unit capacity Factor (Using DER Net)........ 79.59 69.14 68.38

23. Unit Forced. Outage Rate.. 11.32 17.45 8.17

24. Shutdowns Scheduled Over Next 6 Months: NOME

25. If Shutdown at End of Report Period, Estimated Date of Startup: N/A

3 4

y 1

1 AVERAGE DAILY UNIT POWER LEVEL 4

4 FOR OCTOBER 199G 3

Docket No.: 50-309 s Unit: Maine Yankee Dates 19/Nov/96 ,

Completed By: .S . J. BAILEY f Telephone: 267-798-4241 '

DDy Avg. Daily Power Level Day Avg. Daily Power Level (NWe-Net) (HWe-Net) 1 .................... 790 16 .................... 791  !

)

2 .................... 789 17 .................... 796 3 .................... 793 18 .................... 793 4 .................... 793 19 .................... 791 )

5 .................... 792 20 .................... 796 l

6 .................... 793 21 .................... 792 )

7 .................... 792 22 .................... 796 l 8 .................... 794 23 .................... 794 9 .................... 324 24 .................... 794 10 .................... 0 25 .................... 795 11 .................... 0 26 .................... 794 12 .................... 9 27 .................... 795 13 .................... 514 28 .................... 794 14 .................... 794 29 .................... 762 15 .................... 797 30 .................... 790 31 .................... 792

=_. - . .- -. . . . . . . . . - - . - - . _ . . _ . . . - . . . _ . . , .

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v Docket No: 50-309 Unit Name Maine Yankee Date: 11-13-96 3 4

Completed By: S.J. Bailey i Telephone: 207-798-4241 i i

Report Month October, 1996 ,

MARRATIVE

SUMMARY

OF OPERATING EXPERIENCES The unit operated at 2440 MWTh until October 9 when a trip occurred from a reactor protective system malfunction. The unit came on-line October 12, and returned to 2440 MWTh on October 16.

, On October 29, power was reduced to 80% to backwash condenser 4

waterboxes A, B, C & D. The unit returned to 2440 MWTh on October 30 where it remained the rest of the month.

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.yc l- UNIT SHUTDOWNS AND POWER REDUCTIONS Docket No.:

j- 50-309 FOR OCTOBER 1996 Unit: Maine Yankee

{ Date: 20/Nov/96 l Completed By: S. J. BAILEY i

Telephone: 207-798-4241

, Page: 1 of 1 l

4 l

Number L.R. to 98.3% 05-96-15

] L.R. to 80%

Date 969124 961999 l ll ll. ll 961929 Type (1) F F l ll ll p F 1

l Duration U {

-(Hours) 9 84'.3 9 )

ll Reason (2) p. D ll A H B  !

i

{ Mathod (3) ll 4  !

l 3 ,

l 4 l

l LER # ll N/A h 96-031 N/A h

e l System.

Code (4). ZZ IA HF f

Component i

j. Code-(5) ZZZZZZZZ CKTBRK-A HTEICH-D i

By NRC Confirma- Plant trip from Power reduction to

] tory Order, Maine a reactor pro- backwash Yankee is tective system condenser restricted to malfunction. waterboxes A, B, {

Cause and 2440 MWTh until a Phased on-line C & D. Returned j Corrective new computer code J October 12 and to 2440 MWTh on '

i Action is evaluated to returned to 2440 October 39.

- allow operation at' MWTh October 16.

2700 MWTh.

1.- TYPE: 2. REASON: (cont) 4. SYSTEM CODE:

(F)orced F-Administrative Exhibit.G-Instructions (S)cheduled G-Operational Error for Preparation of Data H-Other (Explain) Entry Sheets for

2. REASON Licensee Event Report A-Equipment Failure 3. METHOD: (LER) File (NUREG.0161) i B-Maintenance or Test 1-Manual C-Refueling 2-Manual Scram 5. COMPONENT CODE:

D-Regulatory Restriction 3-Automatic Scram Exhibit I-Same source E-Operator Training & 4-Other (Explain) as above.

License Examination