U-601420, Monthly Operating Rept for Mar 1989 for Clinton Power Station,Unit 1

Monthly Operating Rept for Mar 1989 for Clinton Power Station,Unit 1

ML20245B296
Person / Time
Site:	Clinton
Issue date:	03/31/1989
From:	Holtzscher D ILLINOIS POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
U-601420, NUDOCS 8904260007
Download: ML20245B296 (5)

Text

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Pzga 1 of 4 Attachment to U-601420 CHALLENGES TO MAIN STEAM SAFETY / RELIEF VALVES Month March 1989 On March 19, 1989, Safety Relief Valves (SRVs) IB21-F047A, 1B21-F047D, 1B21-F051C and 1B21-F051D opened to relieve a reactor pressure increase caused by normal control rod drive " bypass" flow following a reactor scram. The reactor was undergoing a pressure test (under solid water conditions) of 1000 psig to check for reactor coolant pressure boundary leakage. Single control rod scram time testing was being performed while the reactor was pressurized to the designated test pressure. Upon completion of the control rod testing, the reactor mode switch was required to be repositioned from " Refuel" to " Shutdown." Placing the reactor mode switch in the " Shutdown" position initiates a reactor scram signal. This condition was anticipated and appropriate plans for lowering reactor pressure (to 900 psig) were made and implemented.

However, with the reactor at " solid conditions" (i.e., no volume addition without a significant increase in pressure), a control rod drive pump running, and a planned reactor scram (which increased control rod drive bypass flow), reactor pressure increased (approximately 7 psig/second) to the relief setpoint of the subject SRVs. Additional information will be provided in LER 87-016.

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.. A L Pags 2 of 4 I Attachmsnt to  !

U-601420 l

AVERAGE DAILY UNIT POWER LEVEL DOCKET No. 50-461 i UNIT Clinton 1 .

DATE 03/31/89 COMPLETED BY D. L. Holtrschei_ _

TELEPHONE (217) 935-8881 X3400 MONTH March 1989 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) 1 0 17 0 2- 0 18 0 3 0 19 0 4 0 20 0 5 0 21 0 6 0 22 0 7 0 23 0 8 0 24 0 9 0 25 0 10 0 26 0 11 0 27 0 12 0 28 0 13 0 29 0 14 0 30 0 15 0 31 0 16 0 INSTRUCTIONS On this form, list the average daily unit power level in MWe-Net for each day in the reporting month. Compute to the nearest whole megawatt.

These figures will be used to plot a graph fcr each reporting month. Note that when maximum dependable capacity is used for the net electrical rating of the unit, there may be occasions when the daily average power level exceeds the 100% line (or the restricted power level line). In such cases, the average daily unit power output sheet should be footnoted to explain the apparent anomaly.

Ptgs 3 of 4 Attachment to U-601420 OPERATING DATA REPORT DOCKET NO. 50-461 UNIT Clinton 1 DATE 03/31/89 COMPLETED BY D. L. Holtzscher TELEPHONE (217) 935-8881 X3400 OPERATING STATUS

1. REPORTING PERIOD: March 1989 GROSS HOURS IN REPORTING PERIOD: 744

2. CURRENTLY AUTHORIZED POWER LEVEL (MWt): 2894 MAX. DEPEND. CAPACITY (MDC)

(MWe-Net): 930 DESIGN ELECTRICAL RATING (MWe-Net): 933

3. POWER LEVEL TO WHICH RESTRICTED (IF ANY) (MWe-Net): None

4. REASONS FOR RESTRICTION (IF ANY): N/A THIS MONTH YR TO DATE CUMULATIVE

5. NUMBER OF HOURS REACTOR WAS CRITICAL... 0 50.9 8348.6

6. REACTOR RESERVE SHUTDOWN HOURS......... 0 0 0

7. HOURS GENERATOR ON LINE................ 0 46.4 8190.9

8. UNIT RESERVE SHUTDOWN HOURS............ 0 0 0

9. GROSS THERMAL ENERGY GENERATED (MWH)... 0 54,689 20,848,772

10. GROSS ELECTRICAL ENERGY GENERATED (MWH) 0 ,_

17,156 6,894,215

11. NET ELECTRICAL ENERGY GENERATED (MWH).. 0 7,195 6,552,040 l

12. REACTOR SERVICE FACTOR................. N/A 2.4% 70.5%

13. REACTOR AVAILABILITY FACTOR............ 0% 2.4% 70.5%

14 UNIT SERVICE FACTOR.................... 0% 2.1% 69.2%

15. UNIT AVAILABILITY FACTOR............... 0% 2.1% 69.2%

16. UNIT CAPACITY FACTOR (Using MDC)....... 0% 0.4% 59.5%

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17. UNIT CAPACITY FACTOR (Using Design MWe) 0% 0.4% 59.5%

18. UNIT FORCED OUTAGE RATE................ 0% 0% 5.8%

19. SHUTDOWNS SCHEDULED OVER NEXT SIX MONTHS (TYPE, DATE, AND DURATION OF EACH): NONE l 20. IF SHUT DOWN AT END OF REPORT PERIOD, ESTIMATED DATE OF STARTUP:

The scheduled date for completion of the current refueling outage is April 5, 1989. The refueling outage is currently 18 days behind schedule.

I 21. UNITS IN TEST STATUS (PRIOR TO COMMERCIAL OPERATION): FORECAST ACHIEVED  !

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U-601420:

L30-89(04-14)-LP

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/LL}NO/S POWER COMPANY' .  ?

CLINTON POWER STATION, P.o. BOX 678, CLINTON. ILLINOIS 61727 -

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A'ril 14 1989 IdCFR50.36 RG'1.16

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. Docket No.'50-461

-Document Control Desk U.S. Ntclear Regulatory Commission l

Washingeon, D.C. .20555

Subject:

. Clinton Pover Station, Unit 1 March 1989 Monthly Operating Report NPF-62 ,

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Dear Sir:

Please find in Attachment 1 the Monthly Operating Report for I Clinton Power Station, Unit 1, for the period ending March 31, 1989. -!

ll Sincerely yours, j

D. L. Holtzscher Acting Manager -

Licensing and Safety GSL/krm

i. Attachment i cc: Regional Administrator, Region III, USNRC J

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