ML20125D740

Monthly Operating Rept for Dec 1979

ML20125D740
Person / Time
Site:	Rancho Seco
Issue date:	01/07/1980
From:	Columbo R SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:
Shared Package
ML20125D729	List: ML20125D728 ML20125D740
References
NUDOCS 8001150495
Download: ML20125D740 (5)

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SUMMARY

OF PLANT OPEPATIONS 12-1 Plant operating at approximately 100% full power.

Performed routine to surveillance and preventive maintenance items.

12-14 12-16 (0825)

Started STP-220 (APSR uthdrawal) and placed rods in manual.

(0922)

Lowering power to 50% _ at 10 FN/ min.

(0947)

Reactor at 50% power.

Started pulling rod group #8 per STP-220.

(1032).

Group #8 at 100% withdrawn.

(1036)

Raising Reactor power to 70%.

~

(1115)

Reactor at 67% (600 FMe) on 5-hour hold.

(1630)

Began increasing Reactor power at 3%/ hour.

(2106)

Stopped power increase at 87% (780 tMe) due to large negative imbalance.

(2220)

Imbalance satisfactory, began increasing power to 90%.

(2320)

Reactor at 90% power (830 FMe).

' 12-17 (0206)

Started increasing power to 100% at 3%/ hour.

(0528)

Reactor at 100% (900 MWe).

Completed STP-220.

12-21 (0920)

Recalibrated Feedwater flows in computer; resulting reactor thermal power indicates 96%.

(1140)

Began increasing power to 100%.

(1500)

Peactor at 100% (945 FMe).

PERSONNEL CHANGES REQUIRING REPORTING No personnel changes that require reporting in accordance with Technical Specifications Figure 6.9-2 were made in Decepber, 1979.

MAJOR ITEMS OF -SAFETY-RELATED MAIN?ENANCE O

1.

Continued inspection / testing of pipe supports; repaired or replaced as necessary to meet the new criteria covered in Bulletin 79-02.

2.

Repaired socket weld on drain line (23620-4"-CA) of Makeup Pump Discharge Header (LER 79-20).

8001150 l

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FIFUELING I!.* FOPS \\TIO;* REQUEST Rancho Seco Unit 1 1.

Usee of racility:

January 19, 1979 2.

Scheduled date for next refueling shutdown:

'3.

Scheduled date for restart following refueling: _ _ M, r,- h. 197o Technical Specification change or other license anendment required:

4; a) Change to Rod Index vs. Poscr Level Curve (TS 3.5.2)

Change to Core Imbalance vs. Pouer Level curve (TS 3.5.2) b)

c) Tilt Limits (TS 3'.5.2)

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d) Safety Equipment Testing (TS 3.3.3)

Scheduled date(s) for subnitting proposed licensing action: December,1979 5.

None Important licensing considerations associated with refueling:

6.

(]

7.

Eumber of fuel assemblies:

177 a) In the core:

b) In the Spent Tuc1 Pool:

112 8.

Present licensed spent'fuc1 capacity:

579 Projected date of the last refueling that can be discharged 9.

to the Spent Fuel Pool:

1987 90022>58 e

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AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-312 UNIT Rancho Seco Unit 1 DATE 12-31 COMPLETED BY R. W. Colombo TELEPl!ONE 916-452-3211 December, 1979 MONTil DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe Net)

(Mwe. Net) j 3

860 g7 849 2

858 13 851 3

859 862 39 860 862 4

g 5

_ 858 21 879 903 6-858 22 7

R99 23 902 O

8 859

' 901 24 9

R69 03

,25 10 862 26 904 11 860 904 27 12 864 28 904 13 862 903 29 14 RA9 896 30 15 864 3

894 16 714 INSTRUCTIONS l

On this fannat.hst the aserne daily' unit power lesel in MWe Net for each day in the reportin,e month. Compute to the nearest whole inegawatt.

'3 90022,59

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OPERATLNG DATA REPORT O

DOCKET NO. 50-312 DATE 79-12-31 CO31PLETED BY R. W.

Colombo TELEPilONE 41 A-m-Ull OPERATING STATUS December 21, 1979 -

I. Unit N~ame:

Rancho Seco Unit One Notes Feedwater flow / heat balance

2. Reporting Period:

December, 1979 recalibrated in computer mon-2772

3. Licensed Thermal Power (MWt):

itoring system.

Resultant

4. Nameptate Rating (Gross MWe):

thermal power level - 96%

5. Design Electrical R: ting (Net 31We):

918 (905 MWe).

Raised power to

6. Maximum Dependable Capacity (Gross 31We):

917 100% (945 MWe) at 1500.

873

7. Maximum Dependable Capacity (Net.\\lWe):

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

N/A N/A

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

10.~ Reasons For Restrictions. If Any:

N/A O

rai,Meeis vr..te.Date Cemeieti,e

~11. Hours In Reporting Period 744 8,760 41,257

12. Number Of flours Reactor Was Critical 744 7,002.7 26,073.5

13. Reactor Resene Shutdown flours 0

1,5'57.7 3,975.1 744 6,778.1 24,941.3

14. Ilours Generatar On Line

15. Unit Resene Shutdown Hours 0

1.199.3 1.210.2

16. Gross Thermal Energy Generated (MWH) 1.975.283 17,914,594*

62,984,018*

17. Gross Electrical Energy Generated (MbII) 66 8 d0,6,.,,

6,021,736

-21,284,536

18. Net Electrical Energy Generated (MWil) 636,415 5,711,999 20,110,889

19. Unit Seruce Factor 1.00.0 77.4 60.5

20. Unit Aui! ability Facter 100.0 91.1 63.4 98.0 74.7 n.6

21. Unit Capacity Faetor (Using 3lDC Net)

22. Unit Capacity Factor IU,ing DER Net) 93.2 71.0 53.1

23. Unit Forced Outage Rate 0

5.6 32.0

24. Shutdoans Scheduled Oser Next 6 Month > (Type: Date,and Duration of Each e.

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Refueling: January 19, 1980 - duration approximately 60 days

25. If Shut Down At End Of Report Period. Estimated Date of Startup:

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26. Units in Test Status tPrior to Commercial Operation):

Forecast Achined INITIA L CRITICA LITY N/A N/A~

INITIAL ELECTRICITY N/A N/A COMMERCIAL OPER \\ TION N/A N/A

'

• Heat balance /feedwater flows recalibrated. Total thermal MWil recalculated to reflect the adjustment.

90022 60 u

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UNITSIIUTDOWNS AND POWER REDUCTIONS DOCKET NO. 50-312 UNIT N AME Rancho Seco Unit One DATE 79-12-31 COMpLET ED ItY R.

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Col o+ o e

REPORT MONTII December. 1979 TELEPilONE 916-65'-1'11 n

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Yh Licer.sce

,E3, Cause & Currectise No.

Date Q

3g jss Event -

El gl Action to O

y_

jgg Report c en U t-gU Prevent Recurrence C5 6

20 79-12-16 S

0 F

1

.N/A N/A N/A Reduced power for Ax'ial. Power Shaping Rods withdrawal (STP-220).

t t

I 2

3 4

F: Forced Reason:

Method:

Exlubit G - Instrucriens S: Scheduled A-Eqt:ipment Failure (Explair)

' l-Manual for P:cparation of Data n Maintenance of Test 2-Manual Scram.

Entry Sheets for Licensee C-Rcrueling 3-Automatic Scram.

Event Report (LE R) File (NUREG.

D Rei;uhtory Restrictie,n 4-Other (Explain) 0161)

E-Operator Training & License Examination F-Adnunist rative 5

G-Operational Error (Explain)

Exhibit ! - Same Source (9/77)

Il-Other (Explain) e 9

9

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