ML20237J459

Monthly Operating Repts for Jul 1987

ML20237J459
Person / Time
Site:	Diablo Canyon
Issue date:	07/31/1987
From:	Bedesem P, Townsend J PACIFIC GAS & ELECTRIC CO.
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
NUDOCS 8708180188
Download: ML20237J459 (10)

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OPERATING DATA REPORT DOCKET N0. 50-275 DATE 08/05/87 COMPLETED BY P. Bedesem TELEPHONE (805)S95-4097 OPERATING STATUS

1. Unit Name: Diablo Canyon Unit 1

2. Reporting Period: July 1987

3. Licensed Thermal Power (MWt): 3338  !

4 Nameplate Rating (Gross MWe): 1137

5. Design Electrical Fating (Net MWe): 1086 l 6. Maximum Dependable Capacity (Gross MWe): 1124

7. Maximum Dependable Capacity (Net MWe):

1073.4

8. If Changes Occur in Capacity Ratings (Items Number 3 Tiirough 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 744.0 5087.0 19581.3

12. Number Of Hours Reactor Was Critical 744.0 4890.9 16156.5

13. Reactor Reserve Shutdown Hours 0.0 0.0 0.0

14. Hours Generator On-Line 744.0 4816.3 15781.3

15. Unit Reserve Shutdown Hours 0.0 0.0 0.0

16. Gross Thermal Energy Generated (MWH) 2381730 14483336 48025406

17. Gross Electrical Energy Generated (MWH) 819100 4983400 16117132

18. Net Electrical Energy Generated (MWH) 781726 4731447 E259268

19. Unit Service Factor 100.0 94.7 80.6

20. Unit Availability Factor 100.0 94.7 80.6

21. Unit Capacity Factor (Using MDC Net) 97.9 86.7 72.6

22. Unit Capacity Factor (Using DER Net) 96.8 85.6 71.8

23. Unit Forced Outage Rate 0.0 5.3 5.2

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 Startup: N/A

• As of commercial operation on May 7, 1985 at 0243 PDT.

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OPERATING DATA REPORT DOCKET NO. 50-323 DATE 08/05/87 COMPLETED BY P. Bedesem TELEPHONE (805)S95-4097 OPERATING STATUS

1. Unit Name: Diablo Canyon Unit 2

2. Reporting Period: July 1987

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): 1130 **

7. Maximum Dependable Capacity (Net MWe): 1079 **

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 t

10. Reasons For Restrictions, If Any: '

None This Month Yr-to-Date Cumulative *

11. Hours In . Reporting Period 744.0 5087.0 12140.0

12. Number Of Hours Reactor Was Critical 403.8 2536.9 9393.9

13. Reactor Reserve Shutdown Hours 0.0 _ 0.0 0.0

14. Hours Generator On-Line 328.3 2239.4 8969.7

15. Unit Reserve Shutdown Hours 0.0 0.0 0.0

16. Gross Thermal Energy Generated (MWH) 729408 6707453 27788172

17. Gross Electrical Energy Generated (MWH) 218000 2190100 9102599

18. Het Electrical Energy Generated (MWH) 185269 2022940 8571214

19. Unit Service Factor 44.1 44.0 73.9

20. Unit Availability Factor 44.1 44.0 73.9

21. Unit Capacity Factor (Using MDC Net) 23.1 36.9 65.4

22. Unit Capacity Factor (Using DER Net) 22.3 35.5 63.1

23. Unit Forced Outage Rate 20.8 15.4 7.5 l

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

N/A i

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

• As of commercial operation on March 13, 1986 at 0300 PST.

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

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' AVERAGE' DAILY UNIT POWER LEVEL DOCKET N0. 50-275 UNIT Diablo Canyon Unit 1 DATE -08/05/87-COMPLETED BY P. Bedesem TELEPHONE (805)S95-4097 MONTH July 1987 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) 1 :1080 17 1081 2 1084 18 1067 3 1087 19 1059 4 1087 '.20 1092 5 1058 21 1080 6 -1080 22 1080 7- 1084 23 '1083 8 1080 24 1080 9 1084 25 1025 10 1084 26 526 11 1088 27 1083 12- 1067 28 1083 13 1080 29 1043 14 1080 -

30 878 15 1087 31 1034 16 1070

-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.

The Average Monthly Electrical Power Level for July, 1987 = 1050.71 MWe-Net.

M0.RPT

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AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-323

' UNIT Diablo Canyon Unit 2 l DATE 08/05/87 COMPLETED BY P. Bedesem TELEPHONE (805)595-4097 MONTH- July 1987~

DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (HWe-Net) l' -19 17- -34 2 -37 18 -99' 3 -46 19 260 4 -50 20 442 5 ___

-48 21 433 6 -47 22 437 7 -47 23 433 8 -44 24 459 9 -39 25 439 10 -38 26 547 11 -39 27 882-112 -39 28 939 13 -39 29 969 14 30 972 15 31 1085 16 . 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.

The Average Monthly Electrical Power ievel for July, 1987 = 249.02 MWe-Net.

M0.RPT

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P.A.C I F I C GAS AND E LE C T RIC C O M PANY 4 DIABLO CANYON POWER PLANT PO. Box 56 Avila Beach, California 93424 * (805) 595-7351 gggglllll R C. THORNBERRY PLANT MANAGER August 13, 1987 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555 RE: Docket No. 50-275 and 50-323 License No. DPR-80 and DPR-82 Monthly Operating Report for July, 1987 Gentlemen:

Enclosed are the completed monthly operating report forms for Diablo Canyon Units 1 and 2 for July, 1987. This report is submitted in accordance with Section 6.9.1.7. of the Units 1 and 2 Technical Specifications.

Sincerely, 9 Sh JOHN D. TOWNSEND JDT:1m Enclosures cc Mr. John B. Martin, Regional Administrator Region V - USNRC g

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l l- MONTHLY NARRATIVE REPORT l OF OPERATION AND MAJOR MAINTENANCE EXPERIENCE This report describes the operating and major maintenance experience for the month of July, 1987. This narrative report was prepared by the plant staff and is submitted in accordance with Section 6.9.1.7 of the Units 1 and 2 Technical Specifications.

On July 1, 1987 Unit I started the month at 100% power.

Unit 2 started the month shutdown for a refueling outage. A 10CFR50.72(b)(2)(ii) 4-Hour Non-Emergency Report was made regarding a low low level in steam generator 2-2 causing an auto start of auxiliary feedwater pumps 2-2 and 2-3.

On July 2, 1987 Unit 2 entered Mode 4.

l On July 4, 1987 Unit 2 entered Mode 3.

On July 7, 1987 A 10CFR50.72(b)(2)(ii) 4-Hour Non-Emergency Report was made concerning the Unit 2 fuel handling building ventilation system going into iodine removal mode.

On July 11, 1987 Unit 2 entered Mode 2.

On July 14, 1987 Unit 2 entered Mode 1.

Unit 2 entered Mode 2 when it experienced a turbine trip and feedwater isolation due to difficulties with f

controlling main feedwater.

A 10CFR50.72(b)(2)(ii) 4-Hour Non-Emergency Report was l made regarding a high high steam generator level on j Unit 2 causing a turbine trip and feedwater isolation. j 1

Unit 2 entered Mode 1.

Unit 2 entered Mode 2 when the turbine was manually tripped due to difficulties with controlling main feedwater.

Unit 2 entered Mode 1. l l

Unit 2 synchronized to the PGandE system.

Unit 2 experienced a turbine trip and reactor trip due to high steam generator level. An Unusual Event was )

declared when Unit 2 experienced a safety injection due j to high steam flow and low steen line pressure. Unit 2 '

entered Mode 3. Additional information concerning this event may be found in the Unit Shutdowns section.

On July 17 1987 Unit 2 entered Mode 2. Unit 2 entered Mode 1 and synchronized to the PGar:JE system.

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I On July 18, 1987 Unit 2 disconnected from the PGandE system to perform a turbine overspeed trip test. Unit 2 then synchronized to the PGandE system.

On July 25, 1987 Unit 1 decreased power to 50% to backwash condenser waterboxes.

On July 26, 1987 Unit I returned to full power.

On July 29, 1987 Unit I decreased power to 55% to search for leaking condenser tubes.  !

On July 30, 1987 Unit I returned to full power.

On July 31, 1987 Unit 1 ended the month at 100% power. Unit 2 ended the month at 100% power.

Summary of Plant Operating Characteristics Power Reductions and Unit Shutdowns Unit 1 operated this month with a unit availability factor of 100% and a unit capacity factor of 97.9%. Unit 1 reduced power twice this month, once to back flush condenser waterboxes and once to search for leaking condenser tubes.

Unit 2 operated this month with a unit availability factor of 44.1% and a unit capacity factor of 23.1%. Unit 2 synchronized to the PGandE system on July 14 ending the cycle 1 refueling outage. Unit 2 tripped once this month on high steam generator water level and was removed from the PGandE system once for turbine overspeed trip testing.

Summary of Significant Safety Related Maintenance Significant safety related maintenance for Unit 2 consisted of:

o Completion of the first refueling outage. In addition to normal plant recovery activities, repairs to the flux thimble high pressure seals were made when leakage was detected while raising reactor coolant pressure. Minor leaks remain at full reactor coolant pressure which are not significant enough to impact unit operation.

Actuations of Steam Generator Safety Valves or Pressurizer Power Operated Relief Valves No challenges to the steam generator safety valves or pressurizer power operated relief valves were made.

Major changes to the,Radwaste Treatment Systems No major changes to the radwaste treatment systems as required by Technical Specification 6.15.1. were made.

M0.RPI

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