ML20127H306

Monthly Operating Rept for Sept 1976 for Monticello Nuclear Generating Plant Unit 1

ML20127H306
Person / Time
Site:	Monticello
Issue date:	09/30/1976
From:	Mayer L, Shamla W NORTHERN STATES POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
References
NUDOCS 9211180480
Download: ML20127H306 (4)

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October 7, 1976 th -

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g gs Director, Office of s e +<,/ > ,> ,

Inspection and Enforceme NJ 7*q O e" U S Nuclear Regulatory Commission Washington, DC 20555 kgo ,

Dear Sir:

e *c by 7*o MONTICELLO NUCLEAR GENERATING PIANT e Docket No. 50-263 License No. DPR-22 e,*e*q#

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Monthly Operating Report September 1976 Attached are ten copies of the Monthly Operating Report for September 1976 for the Monticello Nuclear Generating Plant.

j Yours very truly,

~

l L 0 Mayer, PE Manager of Nuclear Support Services IDM/ak cc: Director, IE-III, USNRC (1)

Director, MIPC, USNRC (2) l 1

l 102G1 9211180480 760930 POR ADOCR 05000263 R PDR

2026 Rev. 3 ' .

8/13/76 OPERATING DATA REPORT DOCKET NO. 50-263 UNIT 1 DATE 10/04/76 CGIPLETED BY W. A. Shamla TELEPHONE 612/295-5151, Ext. 111 OPERATING STAIUS

1. Reporting Period: September Gross llours in Report Period: 720 _

2. Currently Authorized Power Leyel (bMt): 1670 Max. Depend Capacity (bMe-NET):

536 Design Electrical Rating (bMe-Net): 545.4

3. Power Level to Which Restricted (if any) (bMe-Net) > None _

4 Reasons for Restriction (if any): N/A THIS bONni YR TO DATE CUbULATIVE

5. Number of Hours Reactor Was Critical ........... 712.0 6,125.4 35,974.0

6. Reactor Reserve Shutdown Hours ................. 0.0 0.0 940.7

7. Hours Generator On Line ........................ 708.4 6,019.6 34,756.8

8. Unit Reserve Shutdown Hours .................... 0.0 0.0 0.0

9. Gross Themal Energy Generated (bMI) . . . . . . . . . . . 1,129,754.4 9,309,232.8 59,628,470.6

10. Gross Electrical Energy Generated (tM1) . . . . . . . . 380,230 3,153,430 17,624,480

11. Net Electrical Energy Generated (bMI) . . . . . . . . . . 361,642 3,014,274 16,835,366

12. Reactor Service Factor ......................... 98.9% 93.2% 78.1%

13. Reactor Availability Factor .................... 98.9% 93.2% 80.2%

14 t hit Service Factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98.4% 91.6% 75.5%

15. Unit Availability Factor ....................... 98.4% 91.6% 75.5%

16. Unit Capacity Factor (Using MDC) ............... 93.7% 85.5% 68.2%

17. Unit Capacity Factor (Using Design bMe) . . . . . . . . 92.1% 84.1% 67.0%

18. Unit Forced Outage Rate ........................ 1.6% _0.8% 9.7%

19. Shutdowns Scheduled Over Next 6 Months (Type, Date and Duration of Each): None

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

l

'2025 .

Rev. 0 '

3/3/76 AVERAGE DAILY UNIT POWER LEVEL DOCKET No. 50-263 UNIT __1_

DATE 10/06/76 C04PLETED BY W A Shamla TELEPHONE 612/295-5151, Ext. 111 MO.W1 MNER DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (We-Net) (MWe-Net) 511 1 520 17 534 2 532 18 514 3 534 19 538 4 536 20 5 514 21 511 6 230 22 531

. 7 265 23 537 8 461 24 536 9 516 25 534 10 535 26 454 11 531 27 532 12 522 28 537 531 29 538 5 13 14 519 30 535 15 508 31 16 474

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,j

2027 Rev. 0 .

3/3/76 -

DOCKET NO. 50-263 .

UNIT NAME Monticello <

UNIT SIUIDOWNS AND POWER IEDUCTIONS IRTE 10/06/76 ,

COiPIETED BY W. A. Shamla REPORT MONDI SEFIBBER TELEP110NE 612/295-5151 Ext. 111 i

1 MEH10D OF i- TYPE SIUITING D0hN i F: FORCED DURATTO'J 11E REACTOR OR l CORRIETIVE ACTIONS /CGt4ENTS j- No. DATE S: SCIEDULED (110URS) RFE*N (1) REDUCING POWER (2) 30 760906 F .11.6 11 3 While searching for a ground I

on a'125 VDC bus, power to the inboard MSIV DC control solenoids was momentarily i interrupted to locate the g

a ground. All inboard MSIV's closed resulting in an autmatic l reactor scram.

' The MSIV's closed because the 2 l AC portion of MSIV closure I control circuitry was not reset.

i

.(1) RFASON (2) ME A: Equipment Failure (Explain) 1: Manual

B

Vaint. or Test 2: h 1 @ ram 3: Autmatic Scram

'C: Refueling D: Regulatory Restriction 4: Other (Explain)

! E: Operater Training and

, License Examination StBMWl: Operated as Base Loaded Unit. F: Administrati'x .

' G: Operational 6rror (Explain)

. 11: 'Other (F. plain) c ,