ML20040H371

Monthly Operating Rept for Jan 1982

ML20040H371
Person / Time
Site:	Rancho Seco
Issue date:	01/31/1982
From:	Colombo R SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:
Shared Package
ML20040H367	List: ML20040H366 ML20040H371
References
NUDOCS 8202180174
Download: ML20040H371 (6)

Text

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SUMMARY

OF PLANT OPERATIONS 1/1 to 1/7 Continued routine operation at 100% power.

1/8 0201 Decreasing power to 80% for surveillance test of turbine throttle stop valve.

0228 Began increasing reactor power.

0233 Reactor at 88% power--began 2 hour2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> hold.

0433 Began increasing reactor power.

0566 Reactor at 100% power.

1/9 to 1/13 Continued routine operation at 100% power.

1/14 1027 Reactor trip--switchyard testing isolated unit from grid.

1457 Reactor critical.

1805 Paralled unit to grid and closed OCB's.

1/15 0602 Reactor at 87% power--began 5 hour5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> hold.

1105 Began increasing reactor power.

1308 Reactor at 100% power.

1/16 to 1/18 Continued routine operation at 100% power.

1/19 1059 Reactor trip--inverter trip caused high RC pressure trip.

1354 Reactor critical.

1730 Paralled unit to grid and closed OCB's.

1/20 0235 Reactor at 87% power--began 5 hour5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> hold.

1348 Began increasing reactor power.

1630 Reactor at 100% power.

1/21 to 1/23 Continued routine operation at 100% power.

1/25 1114 Reduced load to 91%--supply breaker to MCW pumps opened.

1121 Began increasing reactor power.

1130 Reactor at 100% power.

1/26 to 1/29 Continued routine operation at 100% power.

1/30 0400 Began decreasing power for snubber inspection.

0453 Removed unit from grid, opened OCB's.

0454 Tripped main turbine.

1/31 1900 Began increasing reactor power.

2201 Paralled unit to grid and closed OCB's.

PERSONNEL CHANGES REQUIRING REPORTING No personnel changes that require reporting in accordance with Technical Specification Figure 6.2-2 were made in January,1982.

SUMMARY

OF CHANGES IN ACCORDANCE WITH 10 CFR 50.59(b) 1.

This analysis involved no plant change, but instead examined the safety implications of the use of the Polar Crane during non-refueling plant outages.

2.

Provided a radiation monitoring system capable of detecting an increase in activity associated with a small leak in the primary system. The addition of this monitoring unit provides information that the operator can use to confirm that a LOCA has occurred.

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MAJOR ITEMS OF SAFETY RELATED MAINTENANCE 1.

Recalibrated low fuel oil day tank alarm.

2.

Completed relay nodifications and testing of reactor building purge valves SFV-53503, 53604, and 53610.

3.

Replaced RPS Chaanel C pressure transmitter with a spare.

l 4.

Replaced, calibrated, and inspected transistors on "B" Spray Addition Tank Level on H2SFB.

l 5.

Adjusted alarm switch on BWST temperature switch TSHL-25011.

6.

Completed removal and installation of new solenoids on containment purge valves SFV-53503, 53604, and 53610.

7.

Function tested "A" Inverter.

Replaced SI Standby pushbutton.

l

REFUELING INFORMATION REQUEST 1.

Name of Facility:

Rancho Seco Unit 1 2.

Scheduled date for next refueling shutdown:

September 1982 3.

Scheduled date for restart following refueling:

March 1983 4.

Technical Specification change or other license amendment required:

a)

Change to Rod Index vs. Power Level Curve (TS 3.5.2) b)

Change to Core Imbalance vs. Power Level Curve (TS 3.5.2) c) Tilt Limits (TS 3.5.2) 5.

Scheduled date(s) for submitting proposed licensing action:

July 1982 6.

Important licensing considerations associated with refueling:

None 7.

Number of fuel assemblies:

a)

In the core:

177 b)

In the Spent Fuel Pool:

196 8.

Present licensed spent fuel capacity:

579 9.

Projected date of the last refueling that can be discharged to the Spent Fuel Pool:

1987 l

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AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.

50-312 UNIT Rancho Seco Unit 1 DATE 82-01-31 COMPLETED BY R. W. Colombo TELEPHONE (916) 452-3211 MONTH January 1982 DAY AVERAGE DAILY POWER LEVEL DAY AVER AGE DAILY POWER LEVEL (MWe Net) iMWe-Net) 895 i7 898 2

897 18 897 3

896 39 453 4

893 20 828 5

895 21 900 6

897 22 897 7

897 23 898 8

885 24 898 9

896 25 897 10 895 26 897 II 895 27 896-12 895 28 896 13 894 29 895 14 458 30 91 15 792 3

0 16 897 INSTRUCTIONS On this format list the average daily unit power level in MWe-Net for each day in the reporting month. Compute to the nearest whole megawatt.

e)/77 )

L-

OPERATING DATA REPORT DOCKET NO. 50-312 DATE 82-01-31 COMPLETED BY R. W. Colombo TELEP110NE (916) 452-3211 OPERATING STATUS

1. Unit Name:

Rancho Seco Unit 1 N0t'*

2. Reporting Period:

January 1982

3. Licensed Thermal Power (31Wri:

2772

4. Nameplate Ra:in; a Gross 31WeI:

963

5. Design Electrical R:tingiNet 31We):

918

6..\\!aximum Dependable Capacity (Gross SIWel:

917

7. Staximum Dependable Capacity INet.\\lWe):

873

8. If Changes Occur in Capacity Ratings (items Number 3 Through 7) Since Last Report. Gise Reasons:

N/A

9. Power Lese! To Which Restriete 1. If Any INet 31We):

N/A

10. Reasons Fer Restrictions,if Any:

N/A This ator.th Yr to.Date Cumulative

!!. Hours in Reporting Period 744 744 59,545

12. Number ofliour, Peactor Was Critical 736.6 736.6 35,973.2

13. Reactor Resene Shutdown Hours 0

0 6,458.6

14. flours Generator On-Line 688.7 688.7 34,459.1

15. Unit Re,ene Shutdown flours 0

0 1,210.2

16. Gross Thermal Energy Generated 151%11 1,875,421 1,875,421 87,770,533

17. Grow Electrical Enerp Generated t5thli, 627,883 627,883 29,383,312

18. Net Elec:rical Ener;y Generated 151Will 595,087 595,087 27,752,204

19. Unit Senice Factor 92.6 92.6 57.9

20. Unit Asai! ability Factor 92.6 92.6 59.9

21. Unit Capacity Factor iU,ing.\\tDC Net) 91.6 91.6 53.4

22. Unit Capacity Factor IU>ing DER Neti 87.1 87.1 50. 8__

23. Unit Forced Outage Rate 2.0 2.0 30.6

24. Shutdowns Scheduled Oser Neu o 3!onths tType. Date,and Duration of Eschi:

Next outaae in about 6-8 weeks for maintenance

25. If Shut Down At EnJ Of Repart Period. Estimated Date of Startup:

N/A

26. Unit,In Test StatuuPrior to Commereu! Operation::

Forecast Achiesed INIII \\ L CRITIC \\ til y N/A N/A INITI \\L ELKTRICITY N/A N/A C0\\lstERCI AL OP:.i: ATioN N/A N/A (o/77)

50-312 DOCKET NO.

UNIT SHUTDOWNS AND POWER REDUCTIONS UNIT NAME Rancho Seco finit 1 DATE 82-01-31 COMPLETED BY R 1L Colnrnho REPORT MONTil January 1982 TELEPHONE (916, 457 1711 "i

3E 3

Yk Licensee

,E-r, be Cause & Corrective o

No.

Date g,

3g s

jg5 Event t; 7 A.3 Action to

$E 5

j di Report #

NU U

Prevent Recurrence Q

1 82-01-14 F

7.7 G

3 N/A ZZ ZZZZZZ Testing in switchyard isolated unit from grid, resulting is a load rejection trip.

2 82-01-19 F

6.5 A

3 N/A ED XXXXXX Inverter trip caused trip of RPS channels, resulting is a high RC pressure trip.

3 82-01-30 S

41.1 B

1 82-02/02-L ZZ ZZZZZZ Snubber inspection.

I 2

3 4

F: Forced Reason:

Method:

Exhibit G. instructions S: Scheduled A-Equipment Failure (Explain)

I-Manual for Preparation of Data B Maintenance of Test 2-Manual Scram.

Entry Sheets for Licensee 1

C-Refueling 3-Automatic Scram.

Event Report (LER) File (NUREG-D-Regulatory Restriction 4-Ot her (Explain) 0161)

E Operator Training & License Examination F-Administ rative 5

G-Operational Error (Explain)

Exhibit I - Same Source P)/77)

Il-Other (Explain)