ML20135C335

Monthly Operating Repts for June 1985

ML20135C335
Person / Time
Site:	Diablo Canyon
Issue date:	06/30/1985
From:	Kanick B, Thornberry R PACIFIC GAS & ELECTRIC CO.
To:	NRC OFFICE OF RESOURCE MANAGEMENT (ORM)
References
NUDOCS 8509110398
Download: ML20135C335 (8)

Text

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MONTHLY NARRATIVE REPORT 0F OPERATION AND MAJOR MAINTENANCE EXPERIENCE This. report describes the operating and major maintenance experience for the month of June,1985. This narrative report was prepared by the plant staff and is submitted in accordance with Section 6.9.1.10 of the Unit 1 Plant Technical Specifications and Section 6.9.1.7 of the Unit 2 Plant Technical Specifications.

Central Coast Regional Water Quality Board Report

~ A review of the Unit 1 circulating water inlet and out-temperature strip charts indicate that the delta T limit of 20*F had been exceeded on 7 occasions between May 24 and June 1.

On each occasion, the unit had been coperating at reduced load with one circulating pump secured due to main-condensor maintenance. The delta T high alarm was inoperable during this period.

Had the high delta.T alarms been functional during this time, the first event would have been noticed and corrective actions taken to prevent the repetitions during the following week.

The alarm has been restored to operable status.

- Upon discovery the event was reported to the Central Coast. Regional Water

.-Quality Board by telephone.

To prevent recurrence, the power level the unit was restricted to during one-half condensor operation was reduced and a means 'of reading the circulating water delta T has been added in the control room.

There were no major safety related maintenance activities performed in the month of June 1985 for Unit 1.

Four of Unit 2's Nuclear Instrument Inverters were replaced with a new improved model. A maintenance and testing outage was completed on the 480 Volt AC bus for the three Unit 2 vital load centers.

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

No changes have been nude in the Environmental Radiological Monitoring procedure, the Offsite Dose Calculation procedure, or in any radioactive waste treatment system.

t' O

75 DOC R

PDR J DC0455

-124--

OPERATING DATA EPORT DOCKET NO.

50-275 DATE 07/01/85 COMPLETED BY Bob Kanick l

TELEPHONE (805)595-7351 OPERATING STATUS 2

1 1.

Unit Name:

Diablo Canyon Unit 1 2.

Reporting Period:

June 1985 3.

Licensed Thermal Power (MWt):

3338 4.

Nameplate Rating (Gross MWe):

1137 3

5.

Design Electrical Rating (Net MWe):

1086 6.

Maximum Dependable Capacity (Gross MWe):

1125**

7.

Maximum Dependable Capacity (Net MWe):

1073**

8.

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

f N.A.

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 720.0 1317.3 1317.3*

12. Number Of Hours Reactor Was Critical 720.0 1277.3 1277.3*

13. Reactor Reserve Shutdown Hours 0.0 0.0 0.0

'i

14. Hours Generator On-Line 720.0 1266.5 1266.5*

15. Unit Reserve Shutdown Hours 0.0 0.0 0.0

16. Gross Thermal Energy Generated (MWH) 2286901 3919009 3919009

17. Gross Electrical Energy Generated (MWH) 773100 1317232 1317232

18. NetElectricalEnergyGenerated(MWH) 736185 1251180 1251180 i

19. Unit Service Factor 100.0 96.1 96.1

20. Unit Availability Factor 100.0 96.5 96.5

21. Unit Capacity Factor (Using MDC Net) 95.3 88.5 88.5

22. Unit Capacity Factor (Using DER Net) 94.2 87.5 87.5

23. Unit Forced Outage Rate 0.0 3.9 3.9 l

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

None 25.

If Shut Down At End Of Report Period, Est. Date of Start-up:

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 April 1985 May 1985 Cumulative totals started at 0243 on May 7, 1985.

(Time and date of start of connercial power operation).

These values are predictions - actual values are to be determined by operating 4

experience during the first year of commercial operation.

DC0455

-125-

OPERATING DATA REPORT DOCKET NO.

50-323 DATE 07/01/85 COMPLETED BY Bob Kanick TELEPHONE (805)S95-7351 OPERATING STAiUS 1.

Unit Name:

Diablo Canyon Unit 2 1

2.

Reporting Period: June 1985 3.

Licensed Thermal Power (MWt):

3411 4.

Nameplate Rating (Gross MWe):

1164 5.

Design Electrical Rating (Net MWe):

1119 6.

Maximum Dependable Capacity (Gross MWe):

1145***

7.

Maximum Dependable Capacity (Net MWe):

1093***

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):

N/A

10. Reasons For Restrictions, If Any:

None This Month Yr-to-Date Cumulative

11. Hours In Reporting Period 720.0 1464*

1464*

12. Number Of Hours Reactor Was Critical 0.0 0.0 0.0*

13. Reactor Reserve Shutdown Hours 0.0 0.0 0.0

14. Hours Generator On-Line 0.0 0.0 0.0*

15. Unit Reserve Shutdown Hours 0.0 0.0 0.0

16. Gross Thermal Energy Generated (MWH) 0 0

0*

17. Gross Electrical Energy Generated (MWH) 0 0

0*

18. Net Electrical Energy Generated (MWH)

- 3318

- 7509

- 7509*

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):

N/A 25.

If Shut Down At End Of Report Period, Est. Date of Start-up:

July, 1985

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

Forecast Achieved INITIAL CRITICALITY July 1985 INITIAL ELECTRICITY August 1985 COMMERCIAL OPERATION November 1985

• Cumulative totals started on the April 26, 1985 (Date of effectiveness of Low Power License).

These sections not applicable until commencement of commercial operation.

These values are predictions - actual values are to be determined by operating experience during the first year of comercial operation.

DC0455

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AVERAGE DAILY UNIT POWER LEVEL DOCKET N0.

50-275 UNIT Diablo Canyon Unit 1 DATE 07/01/85 COMPLETED BY Bob Kanick TELEPHONE (805)595-7351 MONTH June 1985 DAY

' AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY NWER LEVEL (FME-NET)

(PhE-NET) 1 735 17 1069 2

937 18 962 3

1069 19 1089 4

1077 20 1064 5

814 21 1082 6

1078 22 536 7

1081 23 1073 8

1077 24 1061 9

1077 25 1085 10 1065 26 1078 11 1072 27 1073 12 1074 28 1081 13 1085 29 1061 14 1074 30 899 15 1077 16 1073 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.

DC0455

-127-

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.

50-323 UNIT Diablo Canyon Unit 2 DATE 07/01/85 COMPLETED BY Bob Kanick TELEPHONE (805)S95-7351 MONTH June 1985 DAY AVERAGE DAILY POWER LEVEL DAY AVERACE DAILY POWER LEVEL (NE-NET)

(NE-NET) 1

-2 17

-5 2

-3 18

-5 3

-4 19

-4 4

-3 20

-5 5

-5 21

-5 6

-5 22

-6 7

-5 23

-6 8

-4 24

-5 9

-4 25

-4 10

-4 26

-6 11

-4 27

-6 12

-6 28

-6 13

-5 29

-5 14

-4 30

-5 15

-4 16

-5 INSTRUCTIONS On this fonnat, list the average daily unit power level in MWe-Net for each day in the reporting month. Compute to the nearest whole megawatt.

DC0455

-128-

UNIT SHUTDOWNS AND POWER REDUCTIONS PAGE 1 0F 1

. DOCKET N0.

50-275 UNIT NAME-Diablo Canyon Unit 1 DATE 07/01/85 COMPLETED BY D.P. SISK REPORT MONTH JUNE 1985

. TELEPHONE (805)595-7351 Licensee Cause & Corrective System Component 1

2 Methodof Event.

Duration Action to 4

5 N1.

Date Type (Hours)

Reason Shutdown Report #

Code Code Prevent Recurrence NONE 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 fram (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 DC0455

-129-

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PACIFIC OAS AND E LE C T RIC C O M PANY DIABLO CANYON POWER PLANT pgg i

PO. Box 56. Avila Beach, California 93424 * (805) 595-7351 R.C. THORNBERRY PLANT MANAGER July 3, 1985 Office of Management Information and Program Control U.S. Nuclear Regulatory Commission Washington, DC 20555 RE:

Docket No. 50-275 and 50-323 License No. DPR-80 and DPR-81 Monthly Operating Report for June,1985-Gentlemen:

Enclosed are the completed monthly operating report forms for Diablo Canyon Units 1 and 2 for June, 1985. This report is submitted in accordance with Section 6.9.1.10 of our Unit 1 Technical Specifications and Section 6.9.1.7 of our Unit 2 Technical Specifications.

Sincerely, ge7'2A R. C. THORNBERRY RCT:lah Enclosures cc Mr. John B. !brtin, Regional Administrator Region V - UShRC d

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