ML20207S450

Monthly Operating Repts for Feb 1987

ML20207S450
Person / Time
Site:	Diablo Canyon
Issue date:	02/28/1987
From:	Keller A, Thornberry R PACIFIC GAS & ELECTRIC CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 8703190470
Download: ML20207S450 (9)

Text

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MONTHLY NARRATIVE REPORT OF OPERATION AND MAJOR MAINTENANCE EXPERIENCE This report describes the operating and major maintenance experience for the month of February,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 February 1,1987 Unit 1 started the month at 100X.

Unit 2 started the month at 100%.

On February 15, 1987 Unit 2 reduced power to 80% due to hydrogen leaking into the generator stator cooling water system.

On February 16, 1987 Unit 2 returned to full power after investigating the hydrogen leak into the generator stator cooling water system.

On February 17, 1987 Unit 2 was removed from the PGandE system and entered Mode 2 to repair a hydrogen leak in the generator stator cooling system.

On February 22, 1987 Unit I declared an unusual event when the Solid State Protection System (SSPS) Train B was declared inoperable. Unit 1 connenced a power decrease in preparation for unit shutdown. The SSPS train B was repaired and declared operable, the shut down was terminated, and the unit was stabilized at 30%

reactor power. At 30% reactor power Unit 1 experienced a turbine trip and subsequent reactor trip due to a High-High Steam Generator Level signal from 1-4 Steam Generator.

Unit 2 was returned to Mode 1 and synchronized to the PGandE system. Unit 2 commenced a power increase to 100%.

On February 23, 1987 Unit 1 entered Mode 1, synchronized to the PGandE system and returned to 73% power. Power was curtailed at 73% due to problems with the Heater #2 Drip Pump seals. Followihg pump repairs Unit I was returned to full power. Unit 2 returned to full power.

On February 25, 1987 Unit 2 reduced power to 50% to search for leaking undenser tubes. Unit 2 was then returned to full power after plugging leaking condenser tubes.

8703190470 870228 PDR ADOCK 05000275 i R PDR

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On February 26, 1987 Unit 2 reduced power to 50% to search for leaking condenser tubes.

On February 27, 1987 Unit 2 returned to full power after plugging leaking condenser tubes.

On February 28, 1987 Unit 1 ended the month with power at 100%.

Unit 2 ended the month with power at 100%.

Unit 1 operated this month with a unit availability factor of 93.1% and a unit capacity factor of 91.0%. Unit I shutdown one time this month due to a reactor trip.

Unit 2 operated this month with a unit availability factor of 84.4% and a unit capacity factor of 78.8%. Unit 2 shutdown one time this month to repair a hydrogen leak into the generator stator cooling water system.

Unit 2 reduced power three times this month, once for a hydrogen leak into the generator stator cooling water system and two times to search for and plug leaking condenser tubes.

No challenges to the steam generator safety valves or pressurizer power operated relief valves were made.

Significant safety related maintenance consisted of repairs to the Solid State Protection System and to the Plant Vent Gaseous and Particulate Radiation Monitors.

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OPERATING DATA REPORT ,

l DOCKET NO. 50-275 DATE 03/02/87 COMPLETED BY A.T. Keller TELEPHONE (805)S95-7351 OPERATING STATUS

1. Unit Name: Diablo Canyon Unit 1

2. Reporting Period: February 1987

3. Licensed Thermal Power (Et): 3338

-4. Nameplate Rating (Gross We): 1137

5. Design Electrical Rating (Net We): 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:

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 672.0 1416.0 15910.3

12. Number Of Hours Reactor Was Critical 636.0 1288.5 12554.2

13. Reactor Reserve Shutdown Hours 0.0 0.0 0.0

14. Hours Generator On-Line 625.8 1243.3 12208.8

15. Unit Reserve Shutdown Hours 0.0 0.0 0.0

16. Gross Thermal Energy Generated ( WH) 2028965 3169447 36711516

17. Gross Electrical Energy Generated (MWH) 689400 1050700 12184432

18. Net Electrical Energy Generated (MWH) 656084 982341 11510162

19. Unit Service Factor 93.1 87.8 76.7

20. Unit Availability Factor 93.1 87.8 76.7 l 21. Unit Capacity Factor (Using EC Net) 91.0 64.7 67.4

22. Unit Capacity Factor (Using DER Net) 89.9 63.9 66.6 i

23. Unit Forced Outage Rate 6.9 12.2 5.9

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 l'

• As of counmercial operation on 5-7-85 at 0243.

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OPERATING DATA REPORT DOCKET NO. 50-323 DATE 03/02/87 COMPLETED BY A.Y. Keller TELEPHONE (805)595-7351 OPERATING STATUS P

1. Unit Name: Diablo Canyon Unit 2

2. Reporting Period: February 1987

3. Licensed Themal Power (Wt): 3411

4. Nameplate Rating (Gross W e): 1164

5. Design Electrical Rating (Net W e): 1119

6. Maximum Dependable Capacity (Gross MWe): 1130 **

7. Maximus 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

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

11. Hours In Reporting Period 672.0 1416.0 8469.0

12. Number Of Hours Reactor Was Critical 672.0 1416.0 8273.0

13. Reactor Reserve Shutdown Hours 0.0 0.0 0.0

14. Hours Generator On-Line 566.9 1310.9 8041.3

15. Unit Reserve Shutdown Hours 0.0 0.0 0.0

16. Gross Thermal Energy Generated (WH) 1834179 4218919 2529 % 37

! 17. Gross Electrical Energy Generated (MWH) 606900 1394600 8307099 l 18. Het Electrical Energy Generated (MWH) 571402 1318681 7866855 l

19. Unit Service Factor 84.4 92.6 94.9

20. Unit Availability Factor 84.4 92.6 94.9

21. Unit Capacity Factor (Using W C Net) 78.8 86J 86.1

22. Unit Capacity Factor (Using DER Net) 76.0 d3.2 83.0

23. Unit Forced Outage Rate 15.6 7.4 5.1

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

l l Refueling Outage, April 3, 1987, 84 days

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

• As of commercial operation on March 13,1%6 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 NO. 50-275 UNIT Diablo Canyon Unit 1 DATE 03/02/87 COMPLETED BY A.T. Keller TELEPHONE (805)S95-7351 MONTH February 1987 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (We-Net) (We-Net) 1 1068 17 1094 2 1087 18 1087 3 1083 19 1077 4 1091 20 1091 5 1091 21 1092 6 1091 22 284 7 1096 23 -37 8 1075 24 360 9 1091 25 744 10 1087 26 1009 11 1092 27 1083 12 1079 28 1088 13 1083 14 1079 15 1079 16 1095 INSTRUCTIONS On this format, list the average daily unit power level in We-Met for each day in the reporting month. Compute to the nearest whole megawatt.

The Average Monthly Electrical Power Level for February, 1987 = 976.32 W e-Net.

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AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-323 UNIT Diablo Canyon Unit 2 DATE 03/02/87 COMPLETED BY A.T. Keller TELEPHONE (805)S95-7351 MONTH February 1987 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (We-Net) (We-Net) 1 1046 17 836 2 1087 18 -43 3 1087 19 -46 4 1087 20 -48 5 1087 21 -48 6 1087 22 225 7 1047 23 1016 8 1088 24 1093 9 1087 25 798 10 1092 26 997 11 1080 27 878 12 1088 28 1058 13 1083 14 1062 15 1054 16 934 INSTRUCTIONS On this format, list the average daily unit power level in We-Net for each de in the reporting month. Compute to the nearest whole megawatt.

The Average Monthly Electrical Power Level for February, 1987 = 850.30 We-Met.

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UNIT SHUTDOWNS Page 1 of 1 DOCKET NO. 50-275 UNIT NAME Diablo Canyon Unit 1 DATE 03/03/87 COMPLETED BY M.T. HUG REPORT MONTH FEBRUARY 1987 TELEPHONE (805)S95-7351 Duration Method of y System Component Ac i 2 4 5 No. Date Type l (Hours) Reason Shutdown 3 Report i Code Code Prevent Recurrence 1 02/22/87 F 46.2 A- 3 87-002 SJ FCV During a return to full power

from 30%, plant operators were unable to control steam generator level due to equipment problems with

. feedwater control valve (FCV) 510. Due to feed flow -

exceeding steam flow, steam generator 1-4 rose to the High-High trip setpoint. FCV 510 tras recalibrated and returned to service.

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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 s 2-Manual Scram Entry Sheets for Licensee C-Refueling '

31 Automatic Scram Event Report (LER) File D-Regulatory Rettriction 4-Continuation from (NUREG-1022)

E-Operator Training & License Examination previous montii F-Administrative 5-Power reduction 5 G-Operational Error (Explain) 6,7,8-N/A

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Exhibit I - Same Source -

H-Other (Explain) 9-Other '

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UNIT SHUTDOWNS Page 1 of 1 DOCKET NO. 50-323 i -

UNIT NAME Diablo Canyon Unit 2

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DATE 03/03/87 w~ -

'CCMPLETED BY. M.T. HUG

REPORT MONTH FEBRUARY 1987 r- TC fPMHE (805)S95-7351 - -c w

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s s (Hours) N Reason2 j vcnh No. Dura} ion Dates ~ Type SNddown3 rkeport i Cradek ' -Code 5 Prevent Recurrance

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1 02/17/87 F 105 d _s

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Unit 2 was removed fim the _,

'M PGandE system and enteica rade 2 l s .to repair'a hydrogen leak in the

' generator 7 stator cooling' system. _

the leakage source was Jdentified and repaired and the~ unit? returned

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- % to service. '

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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-M/A Exhibit I - Same Source-H-Other (Explain) 9-Other M0.RPT

PAC I F'IC GAS AND ELECTR,IC C O M PANY DIABLO CANYON POWER PLANT Y PO. Box 56 Avila Beach, California 93424 - (805) 595-7351 lllllllll R C. THORNBERRY PLANT MANAGER March 13, 1987 U.S. Nuclear Regulatory Comission 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 February,1987 Gentlemen:

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

Sincerely,

, &0 ^

ROBERT C. THORNBERRY RCT:1m l

Enclosures

, cc Mr. John B. Martin, Regional Administrator l Region V - USNRC l

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