ML13331B314

Monthly Operating Rept for Feb 1991 for San Onofre Nuclear Generating Station Unit 1

ML13331B314
Person / Time
Site:	San Onofre
Issue date:	02/28/1991
From:	Vittum S SOUTHERN CALIFORNIA EDISON CO.
To:
Shared Package
ML13317A055	List: ML13317A054 ML13331B313 ML13331B314
References
NUDOCS 9103250305
Download: ML13331B314 (8)

Text

NRC MONTHLY OPERATING REPORT DOCKET NO:

50-206 UNIT NAME:

SONGS - 1 DATE:

3/15/91 COMPLETED BY: S. L. Vittum TELEPHONE:

(714) 368-9230 OPERATING STATUS

1. Unit Name:

San Onofre Nuclear Generating Station, Unit 1

2. Reporting Period:

February 1991

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):

See Item 10

10.

Reasons For Restrictions, If Any:

Power level reduction from full power as a result of a self-imposed reduced operating temperature to retard Steam Generator tube corossion rate.

This Month Yr.-to-Date Cumulative

11.

Hours In Reporting Period 672.00 1416.00 203,037.00

12.

Number Of Hours Reactor Was Critical 0.00 0.00 116,166.70

13.

Reactor Reserve Shutdown Hours 0.00 0.00 0.00

14.

Hours Generator On-Line 0.00 0.00 112,356.38

15.

Unit Reserve Shutdown Hours 0.00 0.00 0.00

16.

Gross Thermal Energy Generated (MWH) 0.00 0.00 141,439,501.61

17.

Gross Electrical Energy Generated (MWH) 0.00 0.00 47,675,344.00

18.

Net Electrical Energy Generated (MWH)

(1,711.00)

(3,267.00) 44,990,379.00

19.

Unit Service Factor 0.00%

0.00%

55.34%

20.

Unit Availability Factor 0.00%

0.00%

55.34%

21.

Unit Capacity Factor (Using MDC Net) 0.00%

0.00%

50.82%

22.

Unit Capacity Factor (Using DER Net) 0.00%

0.00%

50.82%

23.

Unit Forced Outage Rate 0.00%

0.00%

19.55%

24.

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

Reactor thermal shield support replacement and cycle 11 refueling outage commenced on June 30, 1990. Outage duration scheduled for 253 days.

25.

If Shutdown At End Of Report Period, Estimated Date of Startup:March 16, 1991

26.

Units In Test Status (Prior To Commercial Operation):

Forecast Achieved INITIAL CRITICALITY NA NA INITIAL ELECTRICITY NA NA COMMERCIAL OPERATION NA NA mor.feb/2 23 Unit;. Foce Ouag Rt0000:00%9.5 PDR 5N' R

0020A 24 hudwn chdld vr et oth Tye Dt, n

urtono Ec)

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(0 AVERAGE DAILY UNIT POWER LEVEL DOCKET NO:

50-206 UNIT NAME:

SONGS -

1 DATE:

3/15/91 COMPLETED BY: S. L. Vittum TELEPHONE:

(714) 368-9230 MONTH:

February 1991 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)

(MWe-Net) 1 0.00 17 0.00 2

0.00 18 0.00 3

0.00 19 0.00 4

0.00 20 0.00 5

0.00 21 0.00 6

0.00 22 0.00 7

0.00 23 0.00 8

0.00 24 0.00 9

0.00 25 0.00 10 0.00 26 0.00 11 0.00 27 0.00 12 0.00 28 0.00 13 0.00 14 0.00 15 0.00 16 0.00 mor.feb/3

UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO:

50-206 UNIT NAME:

SONGS - 1 REPORT MONTH:

February 1991 DATE:

3/15/91 COMPLETED BY: S. L. Vittum TELEPHONE:

(714) 368-9230 Method of Shutting Cause & Corrective Duration Down LER System Component Action to No.

Date Type1 (Hours) Reason2 Reactor3 No.

Code4 Code5 Prevent Recurrence 139 900630 S

672 C,D 4

NA NA NA Reactor thermal shield supporo replacement and cyclel1 W

refueling outage.

0

'F-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.feb/4

00

SUMMARY

OF OPERATING EXPERIENCE FOR THE MONTH DOCKET NO:

50-206 UNIT NAME:

SONGS - 1 DATE:

3/15/91 COMPLETED BY:

S. L. Vittum TELEPHONE:

(714) 368-9230 Date Time Event February 5 1515 Unit entered Mode 5. Reactor head Torqued.

February 28 1505 Unit was in Mode 5. Mode 4 preparations in progress.

mor.feb/5

0 REFUELING INFORMATION DOCKET NO:

50-206 UNIT NAME:

SONGS - 1 DATE:

3/15/91 COMPLETED BY:

S. L. Vittum TELEPHONE:

(714) 368-9230 MONTH:

February 1991

1. Scheduled date for next refueling shutdown.

The Cycle 11 refueling outage, commenced on June 30, 1990, is currently in progress.

The Cycle 12 refueling outage is forecast to commence in September 1992.

2. Scheduled date for restart following refueling.

Restart from the Cycle 11 refueling outage is forecast for March 16, 1991.

Restart from the Cycle 12 refueling outage is forecast for February 1993.

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

Yes, for Cycle 11 refueling.

Not yet specifically determined for Cycle 12 refueling.

What will these be?

For Cycle 11 refueling:

a)

License Amendment Application No. 189, to resolve single failure susceptibilities of the 4160 volt electrical distribution system and the Safeguards Load Sequencing System (SLSS), was approved on February 28, 1991.

b)

License Amendment Application No. 191, to revise the Technical Specification Table 4.1.2 to reflect changes to the Volume Control and Charging System resulting from the addition of MOV-1100E, was approved on February 20, 1991.

mor.feb/6

REFUELING INFORMATION DOCKET NO:

50-206 UNIT NAME:

SONGS - 1 DATE:

3/15/91 COMPLETED BY:

S. L. Vittum TELEPHONE:

(714) 368-9230 For Cycle 12 refueling:

Not yet specifically determined. Under evaluation.

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

For Cycle 11 refueling outage:

a) License Amendment Application No. 189, to resolve single failure susceptibilities of the 4160 volt electrical distribution system and the SLSS, was approved on February 28, 1991 b) License Amendment Application No. 191, to revise the Technical Specification Table 4.1.2 to reflect changes to the Volume Control and Charging System resulting from the addition of MOV-1100E, was approved on February 20, 1991.

For Cycle 12 refueling outage:

Not yet specifically determined. Under evaluation.

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.

For Cycle 11 refueling, none have been identified.

For Cycle 12 refueling, not yet specifically determined. Under evaluation.

mor.feb/7

REFUELING INFORMATION DOCKET NO:

50-206 UNIT NAME:

SONGS - 1 DATE:

3/15/91 COMPLETED BY:

S. L. Vittum TELEPHONE:

(714) 368-9230 MONTH:

February 1991

6. The number of fuel assemblies.

a) In the core.

157 b) In the spent fuel storage pool.

99

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.feb/8

ATTACHMENT A ODCM, Revision 6