ML20056D617

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Monthly Operating Repts for Jul 1993 for Songs,Units 2 & 3
ML20056D617
Person / Time
Site: San Onofre  Southern California Edison icon.png
Issue date: 07/31/1993
From: Darling J
SOUTHERN CALIFORNIA EDISON CO.
To:
Shared Package
ML20056D615 List:
References
NUDOCS 9308170181
Download: ML20056D617 (12)
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Text

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. a Document Control Desk NRC MONTHLY OPERATING REPORT  !

DOCKET NO: 50-361 UNIT NAME: SONGS - 2 DATE:

COMPLETED BY: J. L. Darlino TELEPHONE: (714) 368-6223 OPERAT_ING STATUS

1. Unit Nanie: San Onofre Nuclear Generatino Station Unit 2 ,
2. Reporting Period: July 1993
3. Licensed Thermal Power (MWt): 3390
4. Nameplate Rating (Gross MWe): 1127
5. Design Electrical Rating (Net MWe): 1070 4
6. Maximum Dependable Capacity (Gross MWe): 1127
7. Maximum Dependable Capacity (Net MWe): 1070 .
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):_ NA
10. Reasons For Restrictions, If Any: NA r This Month Yr.-to-Date Cumulative
11. Hours In Reprrting Period 744.00 5,087.00 87.264.00
12. Number Of Hours Reactor Was Critical 0.00 3.719.73 _ 64.454.09  !
13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00 ,
14. . Hours Generator On-Line- -0.00 3,719.62 -63,376.89  ;
15. Unit Reserve Shutdown Hours 0.00 0.00 0.00 ,
16. Gross Thermal Energy Generated (MWH) 0.00 12.281,788.01-207,101,636.33
17. Gross Electrical Energy Generated (MWH) 0.00 4.149,548.00 70,195.108.00 ,
18. Net Electrical Energy Generated (MWH) (7,828.92) 3,938,722.05 66,546,237.88
19. Unit Service Factor 0.00% 73.12% 72.63%.
20. Unit Availability Factor 0.00% 73.12%- 72.63%
21. Unit Capacity Factor (Using MDC Net) _

0.00% 72.36% 71.27%

22. Unit Capacity Factor (Using DER-Net) 0.09% 72.36% 71.27%
23. Unit Forced Outage Rate 0.00% 0.00% 6.50% *
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 INITIAL ELEC1RICITY NA NA

_JANA COMMERCIAL' OPERATION NA NA 4

mor.jul/2 9308170?.81 930813 PDR .ADDCK 05000361 PDR R

4 Document Control Desk AVERAGE DAILY UNIT POWER LEVEL DOCKET NO: 50-361 UNIT NAME: SONGS - 2 DATE:

COMPLETED BY: J. L. Darlino TELEPHONE: (714) 368-6223 MONTH: July 1993 1

DAY AVERAGE DAILY POWER LEVEL. DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Het) 1 0.00 16 0.00 2 0.00 17 0.00 3 0.00 18 0.00 4 0.00 19 0.00 5 0.00 20 0.00 6 0.00 21 0.00 7 0.00 22 0.00 8 0.00 23 0.00 9 0.00 24 0.00

. 0.00 25 0.00 11 0.00 26 0.00 12 0.00 27 0.00 13 0.00 28 0.00-14 0.00 29 0.00 15 0.00 30 0.00 31 0.00 mor.ao.

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-Document Control' Desk -

UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO: 50-361 UNIT NAME: SONGS - 2 REPORT MONTH: July 1993 __ DATE: - -

COMPLETED BY: J. L. Darlina TELEPHONE: (714) 368-6223 Method of Shutting Cause & Corrective Duration Down LER System Component Action to 2 5 No. Date Type l (Hours) Reason Reactor' No. Code' Code Prevent Recurrence 53 930602 S 744.00 C 2 NA NA NA NA Note. Refueling shutdown continued from previous month.

3

'F-Forced' ' Reason: Method: "IEEE Std 805-1984 S-Scheduled A-Equipment Failure (Explain) 1-Manual B-Maintenance or lest 2-Manual Scram. S IEEE Std 803A-1983 C-Refueling 3-Automatic Scram.

D-Regulatory Restriction 4-Continuation from E-Operator Traiaing & License Examination Previous Month F-Administrative 5-Reduction in the Avert.Je G-Operational Error (Explain) Daily Power Level of more H-Other-(Explain) than 20% from the previous day 6-Other-(Explain) mor.jul/4

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Document Control Desk

SUMMARY

OF OPERATING EXPERIENCE FOR THE MONTH DOCKET NO: 50-361 UNIT NAME: SONGS - 2 DATE:

COMPLETED BY: J. L. Darlina TELEPHONE: (714) 368-6223 Date Time Event July 1 0001 Unit is defueled, Cycle 7 Refueling Outage in progress.

July 14 1140 Commencea core re-load July 18 1458 Completed core re-load July 22 2245 Entered Mode 5.

July 27 0520 Completed RCS fill, vent, and pressurizer bubble formation.

July 31 2305 Entered Mode 4.

2400 L8 nit is in Mode 4, Heat up in progress.

mor.jul/5

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Document Control Desk REFUELING INFORKATION DOCKET N3: 50-361 UNIT NAME: SONGS - 2 DATE:

COMPLETED BY: J. L. Darlina TELEPHONE: (714) 368-6223 MONTH: Jul y 1993

1. Scheduled date for next refueling . shutdown.

Cycle ! cefueling outage began June 5,1993.

2. Scheduled date for restart following refueling.

Restart from Cycle 7 refueling outage occurred on August 8,1993.

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

No.

f What will these be?

NA

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

information.

NA

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.  ;

i None.

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mor.jul/6  ;

Document Control Desk i

REFUELING INFORMATION DOCKET NO: 50-361 UNIT NAME: SONGS - 2 .

DATE: ,

COMPLETED BY: J. L. Darlino TELEPHONE: (714) 368-6223 i MONTH: July 1993

6. The number of fuel assemblies.

a) In the core. 217

  • b) In the spent fuel storage pool. 662 (592 Unit 2 Spent Fuel Assemblies.

70 Unit 1 Spent Fuel Assemblies.)  !

7. Licensed spent fuel storage capacity. 1542  ;

Intended change in spent fuel storage capacity. None

8. Projected date of last refueling that can be discharged to spent fuel stor ge  ;

pool assuming present capacity.

Approximately 2005 (full off-load capability).

.j mor.jul/7 1

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, i Document Control Desk NRC HONTHLY OPERATING REPORT DOCKET N0: 50-362 UNIT NAME: SONGS - 3 DATE:

COMPLETED BY: J. L. Darlina TELEPHONE: (714) 368-6223 OPERATING STATUS

1. Unit Name: San Onofre Nuclear Generatina Station Unit 3
2. Reporting Period: July 1993
3. Licensed Thermal Power (MWt): 3390
4. Nameplate Rating (Gross MWe): 1127 ,

Design Electrical Rating (Net MWe):

5. 1080
6. Maximum Dependable Capacity (Gross MWe): 1127
7. Maximum Dependable Capacity (Net MWe): 1080
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): NA
10. Reasons For Restrictions, If Any: NA This Month Yr.-to-Date Cumulative
11. Hours In Reporting Period 744.00 5,087.00 81,815.00
12. Number Of Hours Reactor Was Critical 721.25 5,008.22 54.207.98-
13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00
14. Hours Generator On-Line 713.23 4.976.73 62,582.79
15. Unit Reserve Shutdown Hours 0.00 0.00 0.00
16. Gross Thermal Energy Generated (MWH) 2,359.461.23 16.472.641.40 201.106,715.64
17. Gross Electrical Energy Generated (MWH) 791,709.50 5.628,205.50 68,255,065.50
18. Net Electrical Energy Generated (MWH) 750,434.00 5,346,266.00 64,491.936.36
19. Unit Service Factor 95.88% 97.83% 76.49%
20. Unit Availability Factor 95.88% 97.83% 76.49%
21. Unit Capacity Factor (Using MDC Net) 93.53% 97.33% 72.99%
22. Unit Capacity Factor (Using DER Net) 93.53% 97.33% 72.99%-
23. Unit Forced Outage Rate 4.14% 2.17% 7.06%- ,
24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):

Refuelina shutdown October 9.1993, forecast duration 85 days.

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 l INITIAL ELECTRICITY NA NA l COMMERCIAL OPERATION NA NA i

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mor.jul/8

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Document Control Desk i

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO: 50-362 UNIT NAME: SONGS - 3 DATE:  !

COMPLETED BY: J. L. Darlino TELEPHONE: (714) 368-6223 t

MONTH: Julv 1993 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) 1 1086.29 16 1076.38 2 1083.71 17 104).08 '

3 1075.50 18 846.75 4 1081.38 n 1085.42 5 832.75 20 1090.63 6 0.00 21 1087.04 7 _

478.04 22 1087.29 8 1060.50 23 1085.13 9 1076.21 24 1075.21 10 1078.96 25 1074.50 .

11 1079.71 26 1084.08

^

12 1070.25 27 1084.46 13 1077.50 28 1087.71 14 1077.33 29 1091.54 15 1078.21 30 1086.63 ,

t 31 1092.54 mor.jul/9 i

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Document Control Desk - 4 UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET N0: 50-362 UNIT NAME: SONGS - 3 REPORT MONTH: July 1993 DATE:

COMPLETED BY: J. L. Darlina TELEPHONE: (714) 368-6223 Method of Shutting Cause & Corrective Duration Down LER System Component Action to No. Date Type' (Hours) Reason 2

Reactor 3 No. Code' Code

  • Prevent Recurrence 77_ 930705 F 30.77 A 3 50-362/93-004 TC [LD,TBG] See note below Note. A low Vacuum Turbine Trip and Reactor Trip occurred when the gland seal steam system spillover valve failed open. The failed open spillover valve caused a loss of gland steam to the low pressure turbine glands, resulting in a vacuum leak. A failure of the instrument air supply tubing caused the valve to fail open. Fatigue induced material failure was identified as the root cause of the instrument air supply tubing failure. Corrective actions taken include: 1) replacement.of the failed Instrument Air tubing, and 2) inspecting the tubing for UNIT 2 aad 3 Turbine Gland Steam supply and spillover valves.

78 930718 5 NA B 5 NA KE COND Unit load reduced to perform circulating water system heat treat.

l 3

'F-Forced ' Reason: Method: 'IEEE Std 805-1984 S-Scheduled A-Equipment Fateure (Explain) 1-Manual B-Maintenance or Test 2-Manual Scram. S IEEE Std 803A-1983 C-Refueling 3-Automatic Scram.

D-Regulatory Restriction 4-Continuation from E-Uperator Training & License Examination Previous Month F-Administrative. 5-Reduction in-the Average-G-Operational Error (Explain) Daily Power Level of more H-Other (Explain) than 20% from the previous day 6-Other (Explain) mor.jul/10

_ . . __ __ ._ _ __ . . _ - . - _ - . _ _ . . _ . . .m - . _. ._ _ - - _ - _ _ .-_ _.

Document Control Desk

SUMMARY

OF OPERATING EXPERIENCE FOR THE MONTH DOCKET N0: 50-362 UNIT NAME: SONGS - 3 DATE:

COMPLETED BY: J. L. Darlina TELEPHONE: (714) 368-6223 ,

Date Time Event July 1 0001 Unit is in Mode 1, 100% reactor power, 1138 MWe.

  • July 5 1944 Reactor tripped on loss of load when the main turbine ,

tripped on low condenser vacuum. Unit in Mode 3.

July 6 1618 Commenced Reactor start up, following repairs to turbine gland seal steam, spillover valve, air supply tubing.

1656 Entered Mode 2. ,

1759 Reactor critical.

2252 Entered Mode 1.

July 7 0230 Unit synchronized to gird, Turbine Load 100 MWe.

Commenced power increase to 100%.

July 8 0030 Reactor power stabilized at 90% to perform excore instrument calibration.

0321 Commenced power increase to 100% following calibration of excore instruments.

0515 Unit at 99% reactor power, 1120 MWe. Turbine control valves full open.

July 17 1900 Commenced Unit load decrease to 80% reactor power to perform circulating water system heat treat.

2305 Unit at 80% reactor power, 890 MWe.

July 18 2012 Commenced unit load increase to 100% after completion of circulating water system heat treat.

July 19 0015 Unit at 100% Reactor power, 1130 MWe.

July 31 2400 Unit is in Mode 1, 100% Reactor Power, 1140 MWe.

mor.jul/11

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Document Control Desk I

REFUELING INFORMATION I DOCKET NO: 50-362  ;

UNIT NAME: SONGS - 3 >

DATE:

COMPLETED BY: J. L. Darlino P TELEPHONE: (714) 368-6223 MONTH: July 1993

1. Scheduled date for next refueling shutdown.

Cycle 7 refueling outage is forecast for October 9, 1993.

2. Scheduled date for restart following refueling.

Restart from Cycle 7 refueling outage is forecast for January 2,1993.

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

Yes. ,

t What will these be?

A. A change has been requested to Technical Specification 3.7.1.1 to allow an increased tolerance on the main steam safety valves for the 1 purpose of determining valve operability. Although not required, NRC approval of this change is desired to support the surveillance testing scheduled to be performed during the Unit 3 Cycle 7 outage.

B. A change will be requested to Technical Specification 3.3.2 to provide for enhancements to the degraded voltage protection. NRC approval is required to permit installation of the required plant ,

modifications during the Unit 3 Cycle 7 Outage.

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

A. Proposed Change on MSSVs Submitted March 5, 1993 B Proposed Change to 3.3.2 August 31, 1993 ,

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.

None.

mor.jul/12  :

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Document Control Desk ~i REFUELING INFORMATION DOCKET N0: 50-362 UNIT NAME: SONGS - 3 DATE:

COMPLETED BY: J. L. Darlina TELEPHONE: (714) 368-6223-MONTH: July 1993

6. The number of fuel assemblies.

a) In the core. 217 '

b) In the spent fuel storage pool. -602 (484 Unit 3-Soent-Fuel Assemblies.118 Unit 1 Spent Fuel Assemblies)

7. Licensed spent fuel storage capacity. 1542 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 2004 (full off-load capability) mor.jul/13 i

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