ML19282B387

Monthly Operating Rept for Feb 1979

ML19282B387
Person / Time
Site:	Rancho Seco
Issue date:	02/28/1979
From:	Colombo R SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:
Shared Package
ML19282B385	List: ML19282B384 ML19282B387
References
NUDOCS 7903130281
Download: ML19282B387 (6)

Text

A ERAGE DAILY UMT P0hCR LEVEL DOCKET NO.

50-312 UNIT Rancho 9eco Unit 1 DATE 79-02-28 R. W. Colombo CO3!PLETED BY TELEPHONE (916) 452-3211 MONTil February DAY AVERAGE D. IL hER LEVEL DAY A\\ ERAGE DAILY POWER LEVEL (5!h'e-Net) 899 3

17 898 2

IS 897 3

19 897 898 4

73 896 5

895 21 897 895 6

22 895 7

896 23 897 898 897 8

o 9

897 239 25 10 896 26 0

gg 896 27 0

12 895 28 367 13 889 14 896 30 15 895 3,

16 897 INSTRt'CTIONS On this fernut. list the aseuge Jai!y unit power leve!in 51we. Net for exh da) in the reputtin2 inonth. Compute to I e nearest whole m.;2wat:

e (9/77) 7oos13o;tgj

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50-312 UNIT SIIUTDOWNS AND POWER REDUCTIONS DOCKET NO.

s UNIT NAME Rancho Seco Unit.1 DATE 70 n?-.?R REPORT MONT1I February compt.ETED ltY lt J. Colonha.

TELt Pil0NE (41 M 45-1911 E

E

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3 4Y3 Licensee

,i3 t g" %

Cause & Corrective No.

Date g

3g g

_g g 5 Event a7 a.1 Action to o

fj.,

5 5 th c' Repori #

81' O 5O Prevent Recurrence H

g u

C 4

79-02-25 S

12.7 B

1 NA CB MOTORX Shutdown to facilitate adding oil to RCP "C" Moto'r Upper Bearing.

5 79-02-25 F

57.3 A

1 NA HA GENERA Generator seal oil system malfunc-tioned causing oil to be admitted into the generator.

I 2

3 4

F: Forced Reawn:

Method:

Exhibit G. Instructions S: Scheduled A l'ipopment Failure (Explain) 1 Manual for Pseparation of Data 11 M.iintenance of Test 2 Manual Scram.

Entry Sheets for 1.ieensee C.Re f ueling 3 Automatic Scram.

Event Report (1.1 III File (NUREG.

D. Rey,ulatory Rest ictinn

4. Oilier (Explain) 016I)

Iouperator Training & License Examination F Administrative G-Operational 1: ror (Explain)

Exhibit I Same Source (9/77) 11 Other (Explain)

OPERATING DATA REPORT DOCKET NO. 50-312 DATE 79-09 ?R COMPLETED BY R-M Colombo TELEPl!ONE (4 i fd 6 U-- 3 211 OPERATING STATCS

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I. Unit Name:

Ranchn seco Unir 1

2. Reporti:; Period:

February, 1979

3. Licensed Thennal Power #31b ri:

2772 963

4. Nameplate Ra:in; #Grn s StWei:

5. Desi;n Ele:trical Ratin;iNet Sibe):

918

6. Staximum Dependable Capacitv # Gross ' Wei:

917 873 l

7. Maxirnum Depend:ble Capacity (Net MWe):

3. If Changes Occur in Capacity Ratings (Irems Number 3 Thrau;h 7) Since Last Report.Ghe Reasons:

N/A

9. Power Lese! To Whreh Restriered,if Any (Net MWe):

None

10. Reasons Fer Restrictions. If Any:

N/A This Month Yr to Date Cumulative 672 1,416 33,913

11. Hours in Repor:.n; PerioJ

12. Number Ofliour> Reactor nas Critical 672 1.398.9 90.4A9.7

13. Reactor Resene Shutdown llours 0

0 2,417.4

14. Ilours Ce.terator 0n Line 602 1,314.7 19.477.9

15. Unit Resene Shutdown Hours 0

0 10.g

16. Gross Therm I Energy Generated 13Ih:i) 1,654,888 3,603,210 48.676,366

17. Gros 3 Electrical Ener;y Generated IMWiii 550,622 1,176,504 16.439.304

18. Net E ee:rica! Encrgy Generated (MwH) 521,200 1.115.334 15.514.224

19. Unit Senie Factor 89.6 92.8 57.4

20. Unit Ani:a5:iity Factor 89.6 92.8 57.5

21. Unit Capac:ty Factor :LWg MDC Lt) 88.8 90.2 57.4

22. Unit Capaci:3 Faetor 4 U3 ng DER Nr 84.5 85.8 49.8

23. Unit Forced Oura.e Rate 8.7 5.7 36.9

24. Shutdown, SencJuled Owr Next c Stonths tType. 0.:le.snJ Derat;or. of Esein:

Maintenance shutdown, nidsRe._of ApM 1, 10-14 davs

25. If Shur Dawn At End Of Renort Ptri d. [3tinuted Date of Startup:

N/A

26. Unit. In Test Status,Priar :o Commere:.:1 Opera:iool:

Forecast Achiesed INITIA L CRITIC A LITY N/A N/A INITI \\l. ELEc t:::cirT N/A N/A COMMLP.Cl \\L OPERATION N/A N/A (0/77)

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REFUELING INFORE\\ TION REQUEST 1.

Name of Facility:

Rancho Seco Unit 1 2.

Scheduled date for next refueling shutdown:

February 1980 3.

Scheduled date for restart following refueling: April 1980 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) d) Safety Equipment Testing (TS 3.3.3) 5.

Scheduled date(s) for submitting proposed licensing action:

January 1980 6.

Important licensing considerations associated with refueling:

flone 7.

Number of fuel assc=blies:

a) In the core:

177 b)

In the Spent Fuel Fool:

122 8.

Present licensed spent fuel capacity:

579 9.

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

1987

NARRATIVE SUFeiARY OF PLANT OPERATIONS Date 2-1 Plant operating at 100% full power.

2-1 Plant operated at 100% full power.

Performed routine surveillances thru and preventive maintenance items.

2-25 2-25 (0500)

Started reducing load for scheduled shutdown.

(0702)

Separated from the grid (opened OCB's).

(0806)

Reactor at 10-8 amps.

(1946)

Reactor at 15% power.

(1948)

Closed OCB's, started increasing power.

(2131)

Reactor at approximately 50% power.

(2142)

Received Seal Oil System trouble alarns.

Found Main Generator moisture indicators full of oil.

Started reducing power.

(2329)

Separated from the grid (opened OCB's) 2-26 Unit separated from the grid, Reactor at 5-7% power.

2-27 Unit separated from the grid, Reactor at 5-7% power.

2-28 (0725)

Raised Reactor power to approximately 10%.

(0845)

Closed OCB's, started increasing power.

(1230)

Reactor at 72% power commenced 5-hour hold.

(1730)

Started raising Reactor Power.

(2045)

Reactor at 87% power commenced 5-hour hold.

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

MAJOR ITEMS OF SAFETY-RELATED MAINTENANCE None.

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SUMMARY

OF CHANGES MADE IN ACCORDANCE WITH 10 CFR 50.59(b)

Engineering evaluation of reduction of nominal RCS T from 582*F to 577*F.

ave ITEM OF INFORMATION The District received a new California Regional Water Quality Control Board (CRWQCB) release permit order No. 59-03.

Major differences between the previous permit and the new one include:

a.

Deletion of sampling requirement for zine (this is still a Technical Specification Appendix B requirement and will be continued until this is changed).

b.

Addition of Suspended Solids sampling requirement, 2 times per week composite samples, 30-day average of 30 ppm, daily maximum 100 ppm.

c.

Addition of 011 and grease grab samples,30-day average 15 ppm, daily maximum 20 ppm.

d.

Chlorine sampling requirement changed to daily rather than weekly.

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