ML20203N244

Monthly Operating Rept for Aug 1986

ML20203N244
Person / Time
Site:	Rancho Seco
Issue date:	08/31/1986
From:	Colombo R SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:	Martin J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
NUDOCS 8609230235
Download: ML20203N244 (6)

Text

m AUGUST 1986

SUMMARY

OF PLANT OPERATIONS The plant has been in cold shutdown for the entire month of August 1%6. The initial shutdown was due to the December 26,1%6 loss of ICS power event.

PERSONNEL CHANGES REQUIRING REPORT There were no changes in personnel which require reporting pursuant to Technical Specification Figure 6.2-2.

SUMMARY

OF CHANGES IN ACCORDANCE WITH 10 CFR PART 5059

- There were no documentation packages completed for facility changes, procedures. tests, or experimentsduring August 1%6.

MAIOR ITEMS OF S AFETY RELATED MAINTEN ANCE

1. PASS modifications continued through August 1%5.

2. Continued Class 1 snubbers seal replacement effort.

3 Continued Non-Nuclear Instrumentation System "Y" cabinet rework.

4. DieselGenerator"A" bi-annual surveillance continued. Completed the four year inspection of Diesel Generator "A" using procedures EM.168 and M1.3327.

This included lug inspection and corresponding circuit function testing of paneth 2 DEA.

5 OTSG "B" sleeving / tube end rolling operations continued.

6. Received reworked Makeup Pump rotating sssembly.

7. Continued work on condensate pump "B."

8. Continued Control Room / Technical Support Center Essential HVAC testing and investigations.

9. Continued 10-year ISI efforts.

10. Electricallug termination rework continued through August 1%6.

I1. Cleaned both air intake screens on Nuclear Service Cooling Water Pump "A" Motor and painted them with Glyptol.

1

12. The spray ponds were super-chlorinated and other maintenance actions were taken as part of an effort to maintain control of the algae growth.

8609230235 860831 DR ADOCK 0500 2 g Ifl

f REFUELING INFORMATION REQUEST','

l. Name of Facility Rancho SecciUnit 1

'i

2. Scheduled date for next refueling shutdown: March 1.1988

3. Scheduled date for r'estart following refueling: July 1. 1988

4. Technical Specification change or other license amendment required:

1 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 suomitting proposed licensing action: September 1.1987

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: 31 6

8. Present licensed spent fuel capacity: 1080

9. Projected.date of the last refueling that can be discharged to the Spent Fuel Pool: December 3. 2001

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-312 UNIT Rancho Seco Unit 1 DATE 08-31-86 COMPLETED BY 'R. Colombo TELEPHONE (916) 452-3211 MONTH August 1986 DAY AVERAGE DAILY POWER' LEVEL- DAY- AVERAGE DAILY POWER LEVEL

.(We-Net) (We-Net)

'l 0 17 0 2 0 18 0 3 0 19 0 4 0 20 0 5 0 21 0 6 0 22 0 7 0 23 0 8 0 24 0 9 0 25 0

.10 0- 26 0 11 0 27 0 12 0 28 0 13 0 29 0 14 0 30 0 15 0 31 0 16 0 INSTRUCTIONS On this format, list the average daily unit power level in NWe-Net for each day in the reporting month. Compute to the nearest whole megawatt.

,,-- - . , - . - , , , . , ., . . = - , - - , , , . . , .

OPERATING DATA REPORT DOCKET NO. 50-312 DATE 08/31/86 COMPLETED 8Y R. Colombo TELEPHONE (916) 452-3211 OPERATING STATUS

1. Unit Name: Rancho Seco Unit 1

2. Reporting Period: August 1986

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): 0

10. Reasons For Restrictions, If Any: NRC letter dated 12/26/85 This Month Yr-to-Date Cumulative

11. Hours in Reporting Period 744 5.831 99.696

12. Number of Hours Reactor Was Critical 0 0 54.322

13. Reactor Reserve Shutdown Hours 0 0 10.300.2

14. Hours Generator On-Line 0 0 50.363.8

15. Unit Reserve Shutdown Hours 0 0 1.210.2

16. Gross Thermal Energy Generated (MWH) 0 0 127.861.688

17. Gross Electrical Energy Generated (MWH) 0 0 41.523.187

18. Net Electrical Energy Generated (MWH) -3.670 -27.471 38.302.631

-19. Unit Service Factor 0.0% 0.0% 50.5%

20. Unit Availability Factor 0.0% 0.0% 51.7%

21. Unit Capacity Factor (Using MDC Net) 0.0% 0.0% 44.0%

22. Unit Capacity Factor (Using DER Net) 0.0% 0.0% 41.9%

23. Unit Forced Outage Rate ___ 100.0% 100.0% 35.3%

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

N/A

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

26. Units In Test Status (Prior to Commercial Operation): Forecast Achieved INITIAL CRITICALITY N/A N/A INITIAL ELECTRICITY N/A N/A COMMERCIAL OPERATION N/A N/A

=. - - -

e DOCKET NO. 50-312 .

UNIT SHUTDOWNS AND POWER REDUCTIONS Rancho Seco Unit 1 UNIT NAME DATE, 8/31/Rfi '

COMPLETED W R. CoMo ,

REPORT MONTH Auaust 1986 TELEPHONE 916/452-3211 "L

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jg 3g 3

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Ih Licensee' Event ge, g?

k3 Cause & Corrective Action to O

$= 5 j;gg Report # mV g Prevent Recurrence d

1 85-12-26 F 744 A 3 85-25 CB Instru Reactor trip on high pressure.

Preceded by a total loss of ICS power.

Corrective actions being implemented I 2 3 4 F:. Forced Reason: Method: Exhibit G Instructions S Scheduled A. Equipment Failure (Explain) 1-Manual for Preparation of Data B-Maintenance of Test 2-Manual Scram. Entry Sheets for Licensee C Refueling 3- Automat!c Scram. Event Report (LER) File (NUREG-D Regulatory Restriction 4-Osher (Explain) 0161)

E-Operator Training & Ucense Examination F-Administrative 5 G-Operational Error (Explain) Exhibit I - Same Source 19/77) Il-Other (Explain)

$suu. .

.,. D*

SACRAMENTO MUNICIPAL UTluTY DISTRICT O 6201 S Street, P.O. Box 15830, Sacramento CA 95852-1830,(9189452-3211 AN ELECTRIC SYSTEM SEHVING THE HEART OF CALIFQRNLA P7 RWC 56- 9 'h September ll,1956 'b'/cg J B MARTINREGIONAL ADMINISTRATOR REGION V 0FFICE OF INSPECfl0N AND ENIORCEMENT U S NUCLEAR REGULATORY COMMISSION 1450 MARIA LANE. SUITE 210 WALNUTCREEK,CA 94M6 OPERATING PLANTSTATUS REPORT DOCKETN0.50-312 Enclosed is the August 1956 Monthly Operating Plant Status Report for the Rancho Seco Nuclear Generating Station pursuant to Technical Specification 6.9.3 kh R. W.COLOMB0 REGULATORY COMPLIANCE SUPERINTENDENT Enci (5) cc. I&E Wash (12)

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