ML20133H248

Monthly Operating Repts for May 1985

ML20133H248
Person / Time
Site:	Diablo Canyon
Issue date:	05/31/1985
From:	Kanick B, Sisk D, Thornberry R PACIFIC GAS & ELECTRIC CO.
To:	NRC OFFICE OF RESOURCE MANAGEMENT (ORM)
References
NUDOCS 8508090258
Download: ML20133H248 (11)

Text

s MONTHLY NARRATIVE REPORT 0F OPERATION AND MAJOR MAINTENANCE EXPERIENCE This report describes the operating and major maintenance experience for the month of May, 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.

On May 5, Unit I was back on line following the start-up strainer removal outage.

On May 7. Unit 2 made initial entry to Mode 6 as initial fuel loading of Unit 2 commenced.

On May 7, Unit 1 was declared comercial at 0243 hours0.00281 days <br />0.0675 hours <br />4.017857e-4 weeks <br />9.24615e-5 months <br />.

On May 18, Unit 1 experienced a reactor trip and safety injection.

On May 20, Unit 1 experienced a reactor trip and safety injection.

On May 20, Unit 1 experienced a reactor trip.

On May 21~, Unit 2 made initial entry to Mode 5.

On May 28, the 1985 Breakwater Settlement Survey was completed and is included with this monthly report as required by DCPP Unit 1 and Unit 2 Technical Specification 4.7.13.3.

On May 28, the PSRC approved a revision to the Offsite Dose Calculation Procedure (0DCP). In accordance with Technical Specification 6.14, a copy of the changed pages, along with documentation of PSRC approval (Procedure History) is attached. Since the methodology for calculation and setpoint determination has not changed (no change to existing methodologies, but a new dose and dose rate calculation section was added for direct radiation), there is no decrease in accuracy or reliability of dose calculations or setpoint determinations.

Copies of the revised procedure pages and the procedure history form are attached to this report.

There were no major safety related maintenances performed in the month of May 1985.

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

No changes have been made in the Environmental Radiological Monitoring procedure or in any radioactive waste treatment system.

In the July 1984 Monthly Operating Report, we reported that minor changes were made to the Environmental Radiological Monitoring Procedure (ERMP), consisting of the assignment of responsibilities for documentation and application of corrective actions and the addition of more sample points to the Cross Checks Program in response to an agreement with the State of California. This report did not completely satisfy the requirements of Section 6.14.1 of the Technical Specifications. To fulfill those requirements, copies of the affected pages are attached along with a statement of the reasons for the changes. Neither of these changes change the fundamental ERMP. Therefore, they will not reduce the accuracy or reliability of dose calculations or setpoint calculations. This procedure was reviewed and approved by the PSRC on April 12, 1984. y 8508090258 850531 ADOCK 05000275 gh y <

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DC0455 -124-

OPERATING DATA REPORT DOCKET N0. 50-275 DATE 06/03/85 COMPLETED BY Bob Kanick TELEPHONE (805)595-7351 OPERATING STATUS

1. Unit Name: Diablo Canyon Unit 1

2. Reporting Period: May 1985

3. Licensed Thermal Power (MWt): 3338 4 Nameplate Rating (Gross MWe): 1137

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:

The capacity figures (items 6 and 7) were revised to reflect data obtained during recent full power operation

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 597.3 597.3 597.3*

12. Number Of Hours Reactor Was Critical 557.3 557.3 557.3*

13. Reactor Reserve Shutdown Hours 0.0 0.0 0.0

14. Hours Generator On-Line 546.5 546.5 546.5*

15. Unit Reserve Shutdown Hours 0.0 0.0 0.0

16. Gross Thermal Energy Generated (MWH) 1632108 1632108 1632108

17. Gross Electrical Energy Generated (MWH) 544132 544132 544132

18. Net Electrical Energy Generated (MWH) 514995 514995 514995

19. Unit Service Factor 91.5 91.5 91.5

20. Unit Availability Factor 91.5 91.5 91.5

21. Unit Capacity Factor (Using MDC Net) 80.4 80.4 80.4

22. Unit Capacity Factor (Using DER Net) 79.4 79.4 79.4

23. Unit Forced Outage Rate 8.5 8.5 8.5

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 o Cumulative totals started at 0243 on May 7, 1985. (Time and date of start of commercial power operation).

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

DC0455 -125-

i .

OPERATING DATA REPORT i

DOCKET N0. 50-323

, DATE 06/03/85

COMPLETED BY Bob Kanick TELEPHONE (805)595-7351 OPERATING STATUS

1. Unit Name: Diablo Canyon Unit 2

2. Reporting Period: May 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 4

This Month Yr-to-Date Cumulative

11. Hours In Reporting Period 744.0 863* 863*

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) 0 0 0*

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. Pate of Start-up: July, 1985

! 26. Units In Test Status (Prior to Commercial Ggeration): Forecast Achieved INITIAL CRITICALITY June 1985 INITIAL ELECTRICITY July 1985 COMMERCIAL OPERATION October 1985

• Cumulative totals started on the April 26, 1985 (DateofeffectivenessofLowPower License).

00 These sections not applicable until commencement of commercial operation, 00* These values are predictions - actual values are to be determined by operating experience during the first year of commercial operation.

DC0455 -126-

AVERAGE DAILY UNIT POWER LEVEL DOCKET N0. 50-275 UNIT Diablo Canyon Unit 1 DATE 06/03/85 COMPLETED BY Bob Kanick TELEPHONE (805)595-7351 MONTH May 1985 DAY AVERAGE DAILY POER LEVEL DAY AVERAGE DAILY POWER LEVEL (NE-NET) (NE-NET) 1 N/A 17 1060 2 N/A 18 312 3 N/A 19 86 4 N/A 20 72 5 N/A 21 560 6 N/A 22 1064 7 1068 23 958 8 1073 24 491 9 1076 25 643 10 1084 26 1069 11 1078 27 1028 12 1024 28 957 13 1073 29 759 14 1081 30 1080 15 1072 31 758 16 1052 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 N0. 50-323 UNIT Diablo Canyon Unit 2 DATE 06/03/85 COMPLETED BY Bob Kanick TELEPHONE (805)595-7351 MONTH May 1985 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (lHE-NET) (lWE-NET)

-1 -6 17 -4 2 -6 18 -8 3 -5 19 -21 4 -5 20 -11 5 -5 21 -9 6 -5 22 -4 7 -5 23 -5 8 -5 24 -4 9 -5 25 -4 10 -5 26 -4 11 -4 27 -4 12 -5 28 -5 13 -4 29 -5 k 14 -5 30 -5  !'

15 -4 31 -4 .

16 -4

'.s 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 -128-

UNIT SHUTDOWNS AND POWER REDUCTIONS '

PAGE 1 0F 3_ DOCKET N0. 50-275 UNIT NAME Diablo Canyon Unit 1

- DATE 06/03/85 .

COMPLETED BY D.P. SISK REPORT MONTH MAY 1985 TELEPHONE (805)595-7351 Licensee System Component ause & Corrective Action to 1

Duration 2 Methodof Event 4 5

No. Date Type (Hours) Reason Shutdown Report # Code Code Prevent Recurrence 1 5-1 S 54.7 B 4 N/A TB GEN Unit was placed in cold shutdown for the removal of start-up strainers, maintenance, required modifications, and surveillance testing necessary to permit operation for the balance of the fuel cycle with no additional planned outages.

2 5-18 F 26.0 A 3 85-014 EE AB The slave 2.5 KVA regulating transformer for instrument inverter IY-13 failed. The failed transformer was replaced.

To improve reliability, the entire inverter will be replaced with a new, improved design that includes a single output regulator transformer (no slave transformer) during the first available long term outage.

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 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 ruduction 5 I G-Operational Error (Explain) 6,7,8-N/A Exhibit I - Same Source H-0ther(Explain) 9-Other f

DC0455 -129-

UNIT SHUTDOWNS AND POWER REDUCTIONS '

PAGE 2 0F 3 DOCKET NO. 50-275 UNIT NAME Diablo Canyon Unit 1 DATE 06/03/85 .

COMPLETED BY D.P. SI5K REPORT MONTH MAY 1985 TELEPHONE (805)595-7351 Licensee System Component Cause & Corrective Action to Duration Event Date Type 1

Reason 2 Methodof Shutdown Report # 4 Code 5

Prevent Recurrence No. (Hours) Code 3 5-20 F 10.4 A 3 85-015 EE AB A loose connection to the output circuit breaker for instrument inverter PY-12 resulted in the breaker tripping open (low voltage or voltage spike). The connection was reterminated. To prevent recurrence, these connections will be rechecked in thirty days and again quarterly until the connections are replaced by using improved methods of making terminations.

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-0perator Training & License Examination previous month.

F-Administra tive 5-Power reduction 5 G-Operational Error (Explain) 6,7,8-N/A Exhibit I - Same Source H-Other (Explain) 9-0ther DC0455 -130-

UNIT SHUTDOWNS AND POWER REDUCTIONS PAGE 3 0F 3 DOCKET N0e 50-275 -

UNIT NAME Diablo Canyon Unit 1 DATE 06/03/85 ,

COMPLETED BY D.P. SI5K REPORT MONTH MAY 1985 TELEPHONE (805)595-7351 Licensee System Component ause & Corrective Action to Event No. Date Type l- Duration (Hours) Reason 2 Methodof Shutdown Report # Code 4

Code 5

Prevent Recurrence 4 5-20 F 14.4 G 3 85-016 EE AB The reactor trip was caused by a voltage transient while instrument bus PY-12 was being transferred from back-up to normal power source. This caused source range channel 32 to spike and cause a reactor trip. To prevent recurr-ence, the applicable operational procedure has been revised to restrict the conditions under which this power transfer may be made.

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 reduction 5 G-Operational Error (Explain) 6,7,8-N/A Exhibit I - Same Source H-Other (Explain) 9-Other DC0455 -131-

UNIT SHUTDOWNS AND POWER REDUCTIONS

• PAGE 1 0F 1 DOCKET N0. 50-323 UNIT NAME Diablo canyon Unit Z DATE 06/03/85 .

COMPLETED BY D.P. SI5K REPORT MONTH MAY 1985 TELEPHONE (805)595-7351 Licensee System Component Cause & Corrective Action to

, y Duration 2 Methodof Event 4 5 No. Date Type (Hours) Reason Shutdown Report # Code Code Prevent Recurrence This report is not applicable until initial electrical production 2

)

i 1 2 3 4 F: Forced Reason: Method: Exhibit G - Instructions i 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) i 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-0ther (Explain) 9-Other 1

DC0455 -132-

r-In the July 1984 Monthly Operating Report, we reported that minor changes were made to the Environmental Radiological Monitoring Procedure (ERMP) consisting of the assignment of rcsponsibilities for documentation and application of corrective actions and the addition of more sample points to the Cross Checks Program in response to an agreement with the State of California. This report did not completely satisfy the requirements of Section 6.14.1 of the Technical Specifications. To fulfill those requirements, copies of the affected pages are attached along with a statement of the reasons for the changes.

1) On page 1, the change from Lead Health Physicist to Senior Health Physicist was made to reflect the promotion of the individual involved.

2) On page 14, additional samples were added to the Cross Checks Program with the State of California. These were samples that were already being taken as part of the radiological monitoring program. This change to the ERMP constitutes only an increase in the number of samples in the Cross Checks Program.

Neither of these changes change the fundamental ERMP. Therefore, they will not reduce the accuracy or reliability of dose calculations or setpoint calculations.

This procedure was reviewed and approved by the PSRC on April 12, 1984.

DC0044 3

/ .

PACIFIC GAS AND E LE C T RIC C O M PANY pgg , DIABL O CANYON POWER PLANT I PO. Box 56 Avila Beach, Cahfornia 93424 - (805) 595-7351 R.C. THORNBERRY PLANT MANAGER June 7, 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 May, 1985 Gentlemen:

Enclosed are the completed monthly operating report forms for Diablo Canyon Units 1 and 2 for May, 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, R. C. THORNBERRY RCT:jhr Enclosures cc Mr. John B. Martin, Regional Administrator Region V - USNRC DC0044 1 yg2.y Ele