ML13331B319
| ML13331B319 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 03/31/1991 |
| From: | Nandy F, Vittum S SOUTHERN CALIFORNIA EDISON CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9104220319 | |
| Download: ML13331B319 (8) | |
Text
Southern California Edison Company 23 PARKER STREET IRVINE, CALIFORNIA 92718 F. R. NANDY April 15, 1991 TELEPHONE MANAGER. NUCLEAR LICENSING (714) 454-4504 U. S. Nuclear Regulatory Commission Document Control Desk Washington, D.C. 20555
Subject:
Docket No. 50-206 Monthly Operating Report for March 1991 San Onofre Nuclear Generating Station, Unit 1 Technical Specification 6.9.1.10 to Provisional Operating License DPR-13 for the San Onofre Nuclear Generating Station, Unit 1, requires SCE provide a Monthly Operating Report which includes: routine operating statistics and shutdown experience; and, all challenges to pressurizer safety and relief valves.
This letter transmits the March 1991 Monthly Operating Report for Unit 1. There were no challenges to pressurizer safety or relief valves during the reporting period.
If you require any additional information, please let me know.
Very truly our Enclosures cc:
J. B. Martin (Regional Administrator, USNRC Region V)
C. W. Caldwell (USNRC Senior Resident Inspector, Units 1, 2 and 3)
G. Kalman (NRR, SONGS Project Manager)
Institute of Nuclear Power Operations (INPO) 9--104220319 910331 PDR ADOCK 05000206 R
0 NRC MONTHLY OPERATING REPORT DOCKET NO:
50-206 UNIT NAME:
SONGS - 1 DATE:
4-15-91 COMPLETED BY:
S. L. Vittum TELEPHONE:
(714) 368-9230 OPERATING STATUS
- 1. Unit Name:
San Onofre Nuclear Generating Station, Unit 1
- 2. Reporting Period:
March 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 744.00 2,106.00 203,781.00
- 12.
Number Of Hours Reactor Was Critical 145.56 145.56 116,312.26
- 13.
Reactor Reserve Shutdown Hours 0.00 0.00 0.00
- 14.
Hours Generator On-Line 145.56 145.56 112,501.94
- 15.
Unit Reserve Shutdown Hours 0.00 0.00 0.00
- 16.
Gross Thermal Energy Generated (MWH) 91,210.90 91,210.90 141,530,712.51
- 17.
Gross Electrical Energy Generated (MWH) 28,800.00 28.800.00 47,704,144.00
- 18.
Net Electrical Energy Generated (MWH) 19,898.00 16,631.00 45,010,277.00
- 19.
Unit Service Factor 19.56%
6.74%
55.21%
- 20.
Unit Availability Factor 19.56%
6.74%
55.21%
- 21.
Unit Capacity Factor (Using MDC Net) 6.13%
1.77%
50.66%
- 22.
Unit Capacity Factor (Using DER Net) 6.13%
1.77%
50.66%
- 23.
Unit Forced Outage Rate 0.00%
0.00%
19.53%
- 24.
Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):
- 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.mar/2
AVERAGE DAILY UNIT POWER LEVEL DOCKET NO:
50-206 UNIT NAME:
SONGS - 1 DATE:
4-15-91 COMPLETED BY:
S. L. Vittum TELEPHONE:
(714) 368-9230 MONTH:
March 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 86.92 9
0.00 25 104.67 10 0.00 26 0.00 11 0.00 27 0.00 12 0.00 28 73.29 13 0.00 29 220.88 14 0.00 30 275.46 15 0.00 31 286.17 16 0.00 mor.mar/3
UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO:
50-206 UNIT NAME:
SONGS - I REPORT MONTH:
March 1991 DATE:
4-15-91 COMPLETED BY:
S. L. Vittum TELEPHONE:
(714) 368-9230 Method of Shutting Cause & Corrective Duration Down LER System Component Action to No.
Date Type' (Hours) Reason2 Reactor 3 No.
Code 4 Code5 Prevent Recurrence 139 900630 S
444.16 C,D 4
NA NA NA Reactor thermal shield supp@
Replacement and Cycle 11 refueling outage.
140 910320 F
63.30 A,B 1
NA JB ISV Reactor shutdown and entered Mode 3 for repairs to HV-854A and performance of a Hot SIS force test 141 910322 F
5.19 B
1 NA JB VTV Unit reduction for entry to Mode 3 to isolate SV-2900.
142 910326 F
27.53 B
1 NA BQ VTV Unit reduction for entry to Mode 3 to isolate SV-3900.
143 910327 F
6.50 A
2 NA IG TBG Reactor shutdown to Mode 3 to cap cono-seal to teleflex path L-8.
'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%
'IEEE 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.mar/4
SUMMARY
OF OPERATING EXPERIENCE FOR THE MONTH DOCKET NO:
50-206 UNIT NAME:
SONGS - 1 DATE:
4-15-91 COMPLETED BY:
S. L. Vittum TELEPHONE:
(714) 368-9230 Date Time Event March 1
0001 Unit is in Mode 5.
March 9
0827 Unit entered Mode 4.
March 12 1417 Unit entered Mode 3.
March 19 1135 Unit entered Mode 2.
1216 Reactor i.s critical.
March 20 2320 Reactor shutdown and entered Mode 3 for repairs to HV-854A and performance of a Hot SIS force test.
March 22 1222 Unit entered Mode 2.
,1240 Reactor is critical.
1816 Commenced shutdown to Mode 3 to isolate SV-2900.
1821 Unit entered Mode 3.
March 23 0148 Unit entered Mode 2 following repairs to SV-2900.
0206 Reactor is critical.
1450 Unit entered Mode 1.
1835 Unit on line at 35 MWe (13% power)
March 25 2308 Commenced Unit load reduction for entry to Mode 2 for turbine overspeed and generator no load generator testing.
March 26 0205 Unit off line and in Mode 2 0424 Commenced shutdown to Mode 3 to isolate SV-3900.
0428 Unit in Mode 3.
0455 Reactor trip breakers open.
mor.mar/5
0
SUMMARY
OF OPERATING EXPERIENCE FOR THE MONTH DOCKET NO:
50-206 UNIT NAME:
SONGS - 1 DATE:
4-15-91 COMPLETED BY:
S. L. Vittum TELEPHONE:
(714) 368-9230 March 27 0558 Unit in Mode 2.
0618 Reactor is critical.
1620 Commence reactor shutdown to Mode 3 to cap cono-seal to teleflex path L-8.
1622 Unit in Mode 3.
1645 Tripped reactor.
2106 Reactor startup commenced.
2153 Unit entered Mode 2.
2210 Reactor is critical.
March 28 0557 Unit on line at 27 MWe (17% power) 1115 Made a one-hour report to the NRC pursuant to 10 CFR 50.72(b).1.ii.B for a condition found during operation which is outside the design basis for the plant. Reactor power is to be limited to 75%
Maximum until a review is made and the concern resolved.
2200 Unit load at 203 MWe (50% power)
March 30 0620 Commenced Heat Treat of Circulating Water System.
March 31 2359 Unit is in Mode 1 at 70% power, 308 MWe.
mor.mar/6
REFUELING INFORMATION DOCKET NO:
50-206 UNIT NAME:
SONGS - 1 DATE:
4-15-91 COMPLETED BY:
S. L. Vittum TELEPHONE:
(714) 368-9230 MONTH:
March 1991
- 1. Scheduled date for next refueling shutdown.
September 1992
- 2. Scheduled date for restart following refueling.
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?
Not yet determined for Cycle 12 refueling. Under evaluation.
What will these be?
Not yet determined.
- 4. Scheduled date for submitting proposed licensing action and supporting information.
Not yet 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.
Not yet determined. Under evaluation.
- 6. The number of fuel assemblies.
a) In the core.
157 b) In the spent fuel storage pool.
99 I
- 7. Licensed spent fuel storage capacity.
216 Intended change in spent fuel storage capacity.
None mor.mar/7
REFUELING INFORMATION DOCKET NO:
50-206 UNIT NAME:
SONGS - 1 DATE:
4-15-91 COMPLETED BY:
S. L. Vittum TELEPHONE:
(714) 368-9230
- 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.mar/8