ML13331B215

Monthly Operating Rept for Aug 1989 for San Onofre Nuclear Generating Station,Unit 1

ML13331B215
Person / Time
Site:	San Onofre
Issue date:	08/31/1989
From:	Nandy F, Siacor E SOUTHERN CALIFORNIA EDISON CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 8909260273
Download: ML13331B215 (9)

Text

Southern California Edison Company P. 0. BOX 800 2244 WALNUT GROVE AVENUE ROSEMEAD. CALIFORNIA 91770 F. R. NANDY TELEPHONE MANAGER OF NUCLEAR LICENSING September 14, 1989 (818) 302-1896 U. S. Nuclear Regulatory Commission Document Control Desk Washington, D.C. 20555

Subject:

Docket No. 50-206 Monthly Operating Report for August 1989 San Onofre Nuclear Generating Station, Unit 1 The purpose of this letter is to provide the Monthly Operating Report required by Section 6.9.1.10 of Appendix A, Technical Specifications to Provisional Operating License DPR-13 for San Onofre Nuclear Generating Station, Unit 1.

If you require additional information, please advise.

Very truly yours, Enclosures cc:

J. B. Martin (Regional Administrator, USNRC Region V)

C. W. Caldwell (USNRC Senior Resident Inspector, Units 1, 2 and 3)

Institute of Nuclear Power Operations (INPO) 8909260273 8908:31 PDR ADOCK 05000206 R

PDC

NRC MONTHLY OPERATING REPORT DOCKET NO:

50-206 UNIT NAME:

SONGS - 1 DATE:

9/14/89 COMPLETED BY:

E. R. Siacor TELEPHONE:

(714) 368-6223 OPERATING STATUS

1. Unit Name:

San Onofre Nuclear Generating Station, Unit 1

2. Reporting Period:

August 1989

3. Licensed Thermal Power (MWt):

1347

4. Nameplate Rating (Gross MWe):

456

5. Design Electrical Rating (Net MWe):

436

6. Maximum Dependable Capacity (Gross MWe):

456

7. Maximum Dependable Capacity (Net MWe):

436

8. If Changes Occur In Capacity Ratings (Items Number 3 Through 7)

Since Last Report, Give Reasons:

NA

9. Power Level To Which Restricted, If Any (Net MWe):

390

10. Reasons For Restrictions, If Any:

Self-imposed power level limit to control Steam Generator tube corrosion This Month Yr.-to-Date Cumulative

11. Hours In Reporting Period 744.00 5,831.00 194,719.00

12. Number Of Hours Reactor Was Critical 694.77 1,220.97 111,500.16

13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00

14. Hours Generator On-Line 690.85 1,104.70 107,335.19

15. Unit Reserve Shutdown Hours 0.00 0.00 0.00

16. Gross Thermal Energy Generated (MWH) 780,852.33 1,095,820.00 134,749,557.75

17. Gross Electrical Energy Generated (MWH) 250,800.00 347,400.00 45,499,328.42

18. Net Electrical Energy Generated (MWH) 234,382.00 301,933.00 42,897,951.00

19. Unit Service Factor 92.86%

18.95%

55.12%

20. Unit Availability Factor 92.86%

18.95%

55.12%

21. Unit Capacity Factor (Using MDC Net) 72.25%

11.88%

50.53%

22. Unit Capacity Factor (Using DER Net) 72.25%

11.88%

50.53%

23. Unit Forced Outage Rate 7.14%

53.48%

20.11%

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

NA

25. If Shutdown At End Of Report Period, Estimated Date of Startup:

NA

26. Units In Test Status (Prior To Commercial Operation):

Forecast Achieved INITIAL CRITICALITY NA NA INITIAL ELECTRICITY NA NA COMMERCIAL OPERATION NA NA mor.aug/2

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO:

50-206 UNIT NAME:

SONGS -

1 DATE:

9/14/89 COMPLETED BY:

E. R. Siacor TELEPHONE:

(714) 368-6223 MONTH: August 1989 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)

(MWe-Net) 1 366.50 17 283.08 2

360.83 18 370.92 3

263.58 19 371.46 4

0.00 20 328.75 5

0.00 21 282.00 6

192.04 22 376.83 7

363.75 23 377.21 8

364.88 24 374.88 9

342.92 25 374.29 10 326.29 26 374.42 11 365.04 27 375.21 12 220.83 28 374.96 13 184.42 29 374.33 14 363.54 30 373.83 15 369.04 31 372.50 16 324.00 mor.aug/3

UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO:

50-206 UNIT NAME:

SONGS - 1 REPORT MONTH: AUGUST 1989 DATE: 9/14/89 COMPLETED BY: E. R. Siacor TELEPHONE:

(714) 368-6223 Method of Shutting Cause & Corrective Duration Down LER SysteW Compongnt Action to No.

Date Typel (Hours)

Reason2 Reactor3 No.

Code Code Prevent Recurrence 128 890803 F

53.15 A

3 89-021 AB FT/CBL The reactor automatically tripped from 91% power on a low Reactor Coolant System (RCS) flow in one of the three RCS loops. The low flow signal was caused by a loss of insulation resistance in the cabling for the flow transmitter. A moist foreign substance found to have intruded into the cabling resulted in insulation resistance degradation.

The cabling was replaced and the flow instrument was verified to be operating properly. The cabling will be provided with adequate protection to prevent foreign substance intrusion.

1F-Forced 2Reason:

3Method:

4IEEE Std 805-1984 S-Scheduled A-Equipment Failure (Explain) 1-Manual B-Maintenance or Test 2-Manual Scram.

C-Refueling 3-Automatic Scram.

D-Regulatory Restriction 4-Continuation from E-Operator Training & License Examination Previous Month F-Administrative 5-Reduction of 20%

SIEEE Std 803A-1983 G-Operational Error (Explain) or greater in the H-Other (Explain) past 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> 6-Other (Explain) mor.aug/4

UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO:

50-206 UNIT NAME:

SONGS - 1 MONTH: AUGUST 1989 DATE:

9/14/89 COMPLETED BY:

E. R. Siacor TELEPHONE:

(714) 368-6223 Method of Shutting Cause & Corrective Duration Down LER Syste Compongnt Action to No.

Date Typel (Hours)

Reason2 Reactor3 No.

Code4 Code Prevent Recurrence 129 890812 S

0.00 B

5 NA KE COND Power reduction of 20% or greate4 perform condenser water box cleaning.

1F-Forced 2Reason:

3Method:

4IEEE Std 805-1984 S-Scheduled A-Equipment Failure (Explain) 1-Manual B-Maintenance or Test 2-Manual Scram.

C-Refueling 3-Automatic Scram.

D-Regulatory Restriction 4-Continuation from E-Operator Training & License Examination Previous Month F-Administrative 5-Reduction of 20%

5IEEE Std 803A-1983 G-Operational Error (Explain) or greater in the H-Other (Explain) past 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> 6-Other (Explain) mor.aug/5

S9 ARY OF OPERATING EXPERIENCE FOPHE MONTH DOCKET NO:

50-206 UNIT NAME:

SONGS - 1 DATE:

9/14/89 COMPLETED BY:

E. R. Siacor TELEPHONE:

(714) 368-6223 Date Time Event August 1 0001 Unit is in Mode 1 at 91% reactor power. Turbine load at 386 MWe gross.

August 3 1800 The reactor tripped from 91% power on a low Reactor Coolant System flow in one of the RCS loops.

Entered Mode 3.

August 5 1900 Entered Mode 2.

1914 Reactor made critical.

2125 Entered Mode 1.

2309 Unit synchronized to the grid. Continue reactor power increase.

August 6 1950 Reactor at 90% power.

August 9 2110 Commenced reactor power decrease to perform condenser water box cleaning.

August 10 0611 Reactor power increased to 92% (full power) following completion of condenser water box cleaning.

August 12 0500 Reactor power decreased to 65% to perform condenser water box cleaning and inspection of the circulating water intake structure.

mor.aug/6

SUMMARY

OF OPERATING EXPERIENCE FOR THE MONTH DOCKET NO:

50-206 UNIT NAME:

SONGS - 1 DATE:

9/14/89 COMPLETED BY: E. R. Siacor TELEPHONE:

(714) 368-6223 Date Time Event August 14 0117 Reactor power increased to 92% following completion of condenser water box cleaning and inspection of the circulating water intake structure.

August 16 1800 Reactor power decreased to 65% for condenser water box cleaning and to perform modifications to the south intake rakes.

August 17 1203 Reactor power increased to 92% following completion of condenser water box cleaning and modifications to the south intake rakes.

August 20 1800 Reactor power reduced to 65% for condenser water box cleaning and to perform modifications to the north intake rakes.

August 21 1206 Reactor power increased to 92% following completion of condenser water box cleaning and modifications to the north intake rakes.

August 31 2400 Unit is in Mode 1 at 91% reactor power. Turbine load at 391 MWe gross.

mor.aug/7

REFUELING INFORMATION DOCKET NO:

50-206 UNIT NAME:

SONGS - 1 DATE:

9/14/89 COMPLETED BY:

E. R. Siacor TELEPHONE:

(714) 368-6223 MONTH:

August 1989

1. Scheduled date for next refueling shutdown.

Not yet determined. Under evaluation.

2. Scheduled date for restart following refueling.

Not yet determined. Under Evaluation.

3. Will refueling or resumption of operation thereafter require a Technical Specification change or other license amendment?

Not yet determined. Under evaluation.

What will these be?

Not yet determined.

4. Scheduled date for submitting proposed licensing action and supporting information.

Not yet determined.

5. Important Licensing considerations associated with refueling, e.g. new or different fuel design or supplier, unreviewed design or performance analysis methods, significant changes in fuel design, new operating procedures.

Not yet determined. Under evaluation.

6. The number of fuel assemblies.

a) In the core.

157 b) In the spent fuel storage pool.

59 mor.aug/8

REFUELING INFORMATION DOCKET NO:

50-206 UNIT NAME:

SONGS - 1 DATE:

9/14/89 COMPLETED BY:

E. R. Siacor TELEPHONE:

(714) 368-6223 MONTH:

August 1989

7. Licensed spent fuel storage capacity.

216 Intended change in spent fuel storage capacity.

None

8. Projected date of last refueling that can be discharged to spent fuel storage pool assuming present capacity.

Approximately 1995 (refueling only)

Approximately 1991 (full off load capability) mor.aug/9