ML20111C265

Monthly Operating Rept for Jan 1985

ML20111C265
Person / Time
Site:	Diablo Canyon
Issue date:	01/31/1985
From:	Kanick B, Sisk D, Thornberry R PACIFIC GAS & ELECTRIC CO.
To:	NRC OFFICE OF RESOURCE MANAGEMENT (ORM)
References
NUDOCS 8503150326
Download: ML20111C265 (6)

Text

!

ORRATING DATA REPORT DOCKET N0. 50-275 DATE 02/05/85 COMPLETED BY Bob Kanick TELEPHONE (805)S95-7351 OPERATING STATUS

1. Unit Name: Diablo Canyon Unit 1

2. Reporting Period: January 1985

3. Licensed Thennal Power (MWt): 3338

4. Nameplate Rating (Gross MWe): 1170

5. Design Electrical Rating (Net MWe): 1084

6. Maximum Dependable Capacity (Gross MWe): 1134

7. Maximum Dependable Capacity (Net MWe): 1084

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

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

N.A.

10. Reasons For Restrictions, If Any: None This Month Yr-to-Date Cumulative

11. Hours In Reporting Period 744.0 744.0 1966*

12. Number Of Hours Reactor Was Critical 79.8 79.8 1047.0*

13. Reactor Reserve Shutdown Hours 0 0 -- 0

14. Hours Generator On-Line 52.0 52.0 866.0*

15. Unit Reserve Shutdown Hours 0 0 0

16. Gross Thermal Energy Generated (MWH) 84750 84750 1033048*

17. Gross Electrical Energy Generated (MWH) 24800 24800 287400*

18. Net Electrical Energy Generated (MWH) 12935 12935 216940*

19. Unit Service Factor N/A**

20. Unit Availability Factor N/A**

21. Unit Capacity Factor (Using MDC Net) N/A**

22. Unit Capacity Factor (Using DER Net) N/A**

23. Unit Forced Outage Rate N/A**

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

100 Percent Outage - Maintenance and Startup Testing - March 12, 1985 - 1 month

25. If Shut Down At End Of Report Period. Est. Date of Startup: N/A

26. Units In Test Status (Prior to Commercial Operation): Forecast Achieved INITIAL CRITICALITY April 1984 April 1984 INITIAL ELECTRICITY November 1984 Nov. 1984 COMMERCIAL OPERATION March 1985

• Cumulative totals started on the November 11,1984 (Hour and date of initial electric power generation).

• • These sections not applicable until commencement'of commercial operation.

DC0044 4 DR hh

AVERAGE DAILY UNIT POWER LEVEL 1

DOCKET NO. 50-275 UNIT Diablo Canyon Unit 1 DATE 02/05/65 COMPLETED BY Bob Kanick TELEPHONE (805)595-7351 ___

M01TH January 1985 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (M-MT) (M-MT) 1 +448 ,

17 -4 2 +359 18 ____

-9 3 -43 19 -12 4 __

-34 20 -13 5 +02 21 -13 6 ,

-39 22 -12 7 -8 23 -4 8 -8 24 -8 9 -4 25 -13 10 -4 26 -14 11 -4 27 -13 12 -4 28 -16 13 -4 29 -18 14 -4 30 -21 15 -4 31 -28 16 -4 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.

DC0044 5

a UNIT SHUTDOWNS AND POWER REDUCTIONS PAGE 10F 2 DOCKET NO. ~50-275-

• UNIT NAME Diablo Canyon Unit 1 DATE 02/05/85

. COMPLETED BY D.P. SISK TELEPHONE (805)595-7351 ,

REPORT MONTH JANUAR't, 1985 +

Method of Licensee System Component Cause & Corrective Duration 2 Shutting Event Action to

-No. Date Type l (Hoursh Reason Down Reactor3 Report # Code 4

Code 5

Prevent Recurrence 1 1-2 S 42.2 B 3 85-001 TG FSV The reactor tripped due to low flow in Reactor Coolant System (RCS). Turbine overspeed protection controller solenoid valve SV-41 stuck open.

I during a load rejection transient during the ,

performance of Start Up Test  ;

4 43.7 " Net Load Trip from 50  ;

Percent Power." -The turbine slowed, reducing generator-frequency and correspondingly-reducing the speed of the Reactor Coolant Pumps. This reduced RCS flow and resulted -

in an RCS low flow reactor  !

4 trip. The valve was replaced -'

and tested satisfactory. .;

l' i

f

! 1 2 3 4 F:' Forced Reason: Method: Exhibit G - Instructions I S: Scheduled A-Equipment Failure (Explain) 1-Manual for Preparation of Data I B-Maintenance or Test 2-Manual Scram. Entry Sheets for Licensee

C-Refueling- 3-Automatic Scram. Event Report (LER) File D-Regulatory Restriction 4-Continuation from (NUREG-1022)

E-Operator Training & License Examination previous month.

F-Administrative 5-Power reduction 5 '

G-Operational Error (Explain) 6,7,8-N/A Exhibit I - Same Source

[ H-Other (Explain) 9-Other i

I DC0044 6 -

. - . - - - . ~ . . - - . _ - . . . - --

- ..--..... _ - , . . . - . . . ~-

3 UNIT SFUTDOWS AND POWER REDUCTIONS PAGE 2 0F 2 DOCKET NO. 50-275 * !, ,

UNIT NAME Diablo Canyon Unit 1 DATE 02/05/85 COMPLETED BY -D.P. SISK TELEPHONE (805)595-7351 REPORT MONTH JANUARY, 1985 Method of Licensee . System Component.

Cause & Corrective y Duration 2 Shutting Event 4 Action.to No. Date- Type (Hours) Reason Down Reactor3 Report # Code Code 5

Prevent Recurrence 2 1-4 F. 19.5 -G 3 84-002 N/A N/A. The reactor tripped.when 10 percent power was exceeded with the turbine tripped.  ;

3 1-5 S 630.3 B 3 85-003 DG EK Reactor tripped as part of-Start Up Test 43.5 " Rod Group Drop.and Plant Trip." Diesel Generator 1-1 autostarted but -

did not load during automatic  ;

bus transfer. .Two week maint- -

enance and startup test outage extended to clean main lube

• oil system.

t 1 2 3 4 F: Forced Reason: Method: Exhibit G - Instructions S:-' Scheduled A-Equipment Failure (Explain) 1-Manual for Preparation of Data B-Maintenance or Test 2-Manual Scram. Entry Sheets for Licensee

C-Refueling . 3-Automatic Scram. Event Report (LER) File D-Regulatory Restriction 4-Continuation from (NUREG-1022)

, E-Operator Training & License Examination previous month.

F-Administrative . 5-Power recuction 5 i G-Operational Error (Explain) 6,7,8-N/A Exhibit I - Same Source 7 H-Other (Explain) 9-Other DC0044 7.

j

., . l PACIFIC OAS AND E LE C T RIC C O M PANY ppg

, DIABLO CANYON POWER PLANT I RO. Box 56 Avila Beach, Califomia 93424 + (805) 595-7351 R.C. THORNBERRY PLANT MANAGER February 5, 1984 Office of Management Information and Program Control U.S. Nuclear Regulatory Commission Washington, DC 2055:

RE: Docket No. 50-275 License No. DPR-80 Monthly Operating Report for January,1985 Gentlemen:

Enclosed are the completed monthly operating report forms for Diablo Canyon Unit 1 for January,1985. This report is submitted in accordance with Section 6.9.1.10 of our Technical Specifications. Minor changes have been made to the Unit Shutdowns and Power Reductions Form as requested by the NRC.

Sincerely, f?f R. C. THORNBERRY RCT:jhr Enclosures cc Mr. John B. Martin, Regional Administrator Region V - USNRC tz+

+

DC0044 1

. LMONTHLY NARRATIVE REPORT OF OPERATION AND MAJOR MAINTENANCE EXPERIENCE -

1 This report' describes the operating and major maintenance experience.for the month of January,1985. This narrative report was prepared by the plant staff i,

and -is submitted in accordance with Section 6.9.1.10 of the Plant Technical Specifications.

On January 2, 1985, Unit 1 experienced a reactor trip.

On January 4, 1985,-Unit 1 experienced a reactor trip.

On January 5,1985, Diesel Generator 1-1 autostarted due to a momentary undervoltage during an automatic bus transfer.

On January 20, 1985, both Residual Heat Removal (RHR) Trains were inoperable for approximately 6 minutes.

On January 25, 1985, both Residual Heat Removal (RHR) Trains were inoperable for approximately 2 minutes and Diesel Generator 1-1 autostarted due to momentary undervoltage during an automatic bus transfer.

On January 30,.1985, Diesel Generator 1-2 autostarted due to a momentary undervoltage during an automatic bus transfer.

A pressurizer spray valve was overhauled and returned to operable status.

No challenges to the PORVs or Steam Generator Safety Valves have been made.

No changes have been made in the Offsite Dose Calculation Procedure, the i Environmental Radiological Monitoring Procedure, or any radioactive waste treatment systems.

J l

i DC0044 3

. . - . . .