ML20204K107

Monthly Operating Rept for Mar 1985

ML20204K107
Person / Time
Site:	Rancho Seco
Issue date:	03/31/1985
From:	Colombo R, Reinaldo Rodriguez SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
References
RJR-85-180, NUDOCS 8504250320
Download: ML20204K107 (6)

Text

._

MARCH 1985

SUMMARY

OF PLANT CONDITIONS The plant was'in operation at approximately 94% power from March 1 to March 10. During the second shift on March 11, power was reduced to repair a condenser tube leak. At 0900 hours0.0104 days <br />0.25 hours <br />0.00149 weeks <br />3.4245e-4 months <br /> on March 12, power was leveled off at 60% while the-leak was repaired. By 2100 hours0.0243 days <br />0.583 hours <br />0.00347 weeks <br />7.9905e-4 months <br /> on March 12, reactor power was at 84%.

Power was leveled off at 91% until March 15, when shutdown for the Cycle 7 refueling commenced. The reactor was in cold shutdown by March 17.

PERSONNEL CHANGES REQUIRING REPORT Dan Comstock, Nuclear Operations Superintendent, resigned effective 3/1/85.

~B. E. (Bill) Spencer was named as Nuclear Operations Superintendent on 4/1/85.

Bill joined Nuclear Operations in November, 1969 as a Control Room Shift

' Supervisor. He came to SMUD from Douglas United Nuclear, Inc. where his primary responsibilities involved reactor operation and outage work. His previous experience included 19 years with General Electric where he attained the position of Reactor Specialist.

Bill qualified for his Senior Control Room Operator's License in 1974 and is maintaining the license at the present time. Altogether, Bill has more than 30 years nuclear related experience and meets the requirements of ANSI N45.2 for this position.

SUMMARY

OF CHANGES IN ACCORDANCE WITH 10 CFR 50.59(b)

None-MAJOR ITEMS OF SAFETY-RELATED MAINTENANCE

1) Lower flange. cap screws on "A" diesel generator bypass lube oil pump were tightened to stop leakage.

2) Reactor Building Spray Additive Tank check valve CBS-021 was found to -

be leaking. Valve was disassembled, seat and plug were lapped, and valve was reassembled and tested to verify that leakage was stopped.

3) Boric acid crystals were found on Boric Acid Recirculation Pump A and B Discharge Relief Valve PSV-70505. Valve was disassembled, disc and seat were lapp'ed, slightly bent stem was straightened, and valve was reassembled and tested.

k SS 8504250320 850331 R

' ADOCK 05000312 g

PDR PDR j

REFUELING INFORMATION REQUEST 1.

Name of Facility Rancho Seco Unit 1 2.

Scheduled date for next refueling shutdown:

Sept 15. 1986 3.

Scheduled date for restart following refueling:

Dec 15.1986 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:

March 18. 1985 6..

Important licensing considerations associated with refueling:

N/A 7.

Number of fuel assemblies:

a)

In the core:

177 b)

In the Spent Fuel Pool:

316

-8.

Present licensed spent fuel capacity:

1080 9.

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

Dec 3rd. 2001 i

r-AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.

50-312 UNIT Rancho Seco Unit 1 DATE 3/31/85~

COMPLETED BY

.R. Colom' o u

)

TELEPHONE (916) 452-3211 MONTH March 1985 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)

(MWe-Net) 1 875 17 0

2 882 18 0

3 882 19 0

4 880 20 0

5 880 21 0

6 874 22 0

7 880 23 0

8 883 24 0

9 881 25 0

10 882 26 0

11 881 27 0

12 782 28 0

13 849 29 0

-14 849 30 0

15 863 31 0

16 0

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.

OPERATING DATA REPORT DOCKET NO.

50-312 DATE 3/31/85 COMPLETED BY R. Colombo TELEPHONE (916) 452-3211 OPERATING STATUS NOTE:

1.

Unit Name:

Rancho Seco Unit 1

.2.

Reporting Period:

March 1985 3.

Licensed Thermal Power (MWt):

2.772 4.

Nameplate Rating (Gross MWe):

963 5.

Design Electrical Rating (Net MWe):

918 6.

Maximum Dependable Capacity (Gross MWe):

917 7.

Maximum Dependable Capacity (Net MWe):

873 8.

If changes Occur in Capacity Ratings (Items Number 3 Through 7) Since Last Report, Give Reasons:

N/A 9.

Power Level to Which Restricted, If Any (Net MWe):

880

10. Reasons for Restrictions, If Any:

High Pressure Feedwater "A" Train Out-of-Service This Month Yr-to-Date Cumulative

11. Hours in Reporting Period 744 2.160 87.265

12. Number of Hours Reactor Was Critical 359 1.624.5 53.071.9

13. Reactor Reserve Shutdown Hours 385 385 10.574.9 14.

Hours Generator On-Line 359 1.618.2 49.281.7

15. Unit Reserve Shutdown Hours 0

0 1.210.2

'16.

Gross Thermal Energy Generated (MWH) 903.509 4.055.333 125.665.601 *

17. Gross Electrical Energy Generated (MWH) 301.953 1.366.846 40.798.809

18.. Net Electrical Energy Generated (MWH) 282.883 1.289.988 37.881.184

19. Unit Service Factor 48.25%

74.91%

• 56.47% *

20. Unit Availability Factor 48.25%

74.91%

57.86%

21. Unit Capacity Factor (Using MDC Net) 43.55%

68.40%

49.72%

22. Unit Capacity factor (Using DER Net) 41.41 %

65.05%

47.28%

23.. Unit forced Outage Rate 0.0%

8.8%

29.4% *

24. Shutdowns Scheduled Over Next 6 Months (Type. Date, and Duration of Each):

Refuelina - March 15.1985 - June 15.1985 Three Months 25.

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

N/A

26. Units In Test Status (Prior to Commercial Operation):

Forecast Achieved INITIAL CRITICALITY N/A 4/A INITIAL ELECTRICITY N/A N/A COMMERCIAL OPERATION N/A N/A Values corrected from previous. month's report

i v,

50-312 UNIT SIIUTDOWNS AND POWER REDUCTIONS DOCKET NO.

UNIT N AME Rancho Seco Unit *1

~

DATE 3/31/85 March 1985 COMPLETED IlY R. Colombo REPORT MONT11 TELErilONE (916) 452-3211 i

"L.

.E E 3

.Y Licensee Eg h.

Cause & Currective 3g s

,y5 Event gg o-1 Action to No.

Date o.

N

$E 5

jdg Report #

un u u

Prevent Recurrence c5

^

F 12 A

1 N/A

.HC HTEXCH Condenser tube leak. Leak was plugged 4

3/11/85 and plant brought back up.

No abnormal-ities noted.

5 3/15/85 S

385 C

'l N/A ZZ ZZZZZZ Shutdown for refueling.

~

l 2

3 4

F: Forced Reasim:

Method:

Exhibit G Instructions S: Scheduled A Equipment Failure (Explain) 1-Manual for Preparation of Data U-Maintenant.e ni Test 2-Manual Scram.

Entry Sheets for I.icensee C-Iterucling J Automatic Scram.

Event Report (LER) File (NUREG-D Iter."latory Itestriction 4-Other (Explain) 0161)

E-Operato Training & License Examination F-A.1niinist rative 5

G-Operational Error (Explain)

Exhibit 1 - Same Source

('7/77)

Il-Other (Explain) 9

c-e

($iSMUD

~~~

SACRAMENTO MUNICIPAL UTILITY DISTRICT O 6201 S Street, P.O. Box 15830, Sacramento, CA 95813; (916) 452-3211 AN ELECTRIC SYSTEM SERVING THE HEART OF CALIFORNIA RJR 85-180 April 8, 1985 DIRECTOR OFFICE OF INSPECTION AND ENFORCEMENT U S NUCLEAR REGULATORY COMMISSION WASHINGTON DC 20555 OPERATING PLANT STATUS REPORT DOCKET NO. 50-312 Enclosed is the March 1985 Monthly Plant Status Report for Rancho Seco ttTt n.

s f

R. J. Ro riguez Assistant General Manager, Nuclear cc:

I&E Washington (9)

Region V MIPC (2)

INP0 h

, i Rt.NCHO SECO NUCLEAR GENERATING STATION O 14440 Twin Cities Road, Perald, CA 95638-9799;(209) 333-2935