DCL-02-143, November 2002 Monthly Operating Report for Diablo Canyon Power Plant, Units 1 & 2

November 2002 Monthly Operating Report for Diablo Canyon Power Plant, Units 1 & 2

ML023600013
Person / Time
Site:	Diablo Canyon
Issue date:	12/13/2002
From:	Becker J Pacific Gas & Electric Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
DCL-02-143
Download: ML023600013 (6)

Text

WI Pacific Gas and Electric Company Diablo Canyon Power Plant PO Box 56 Avila Beach, CA 93424 December 13, 2002 8005456000 PG&E Letter DCL-02-143 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Docket No. 50-275, OL-DPR-80 Docket No. 50-323, OL-DPR-82 Diablo Canyon Units I and 2 Monthly OperatinQ Report for November 2002

Dear Commissioners and Staff:

Attached is the Monthly Operating Report for Diablo Canyon Power Plant, Units I and 2, for November 2002. This report is submitted in accordance with Technical Specification 5.6.4 and NRC Generic Letter 97-02.

Sincerely, James R. err Vme Preskient, DCPPOperationsand Station Diredor smg/1 7131R0239538 Enclosures cclenc: Paul R. Fox, American Nuclear Insurers Robert D. Glynn, Jr.

Barbara Lewis, McGraw Hill Ellis W. Merschoff, NRC Regional Administrator, Region IV David L. Proulx, NRC Senior Resident Inspector Gregory M. Rueger Girija S. Shukla, NRC Project Manager INPO Record Center A member of the STARS (Strategic Teaming and Resource Sharing) Altiance Catlawav e Comanche Peak

• Diablo Canvon e Palo Verde

• South Texas Proiect

• Wolf Creek

Enclosure 1 PG&E Letter DCL-02-143 NOVEMBER 2002, OPERATION SUMMARIES DIABLO CANYON POWER PLANT UNITS I AND 2 Summary of Unit 1 Operation Unit 1 remained in Mode 5 (Cold Shutdown) during November for main turbine generator rotor replacement.

Summary of Unit 2 Operation Unit 2 began November in Mode 1 (Power Operation) at approximately 100 percent power. On November 7, 2002, operators began a planned ramp to 20 percent power in response to a forecast of high swells. Power reached 20 percent at 2333 PST. On November 8, 2002, at approximately 0630 PST, high swells and ocean plant-life debris caused high differential pressure across the traveling screens. In response, operators shut down the circulating water pumps, manually tripped the turbine, and shut down the reactor. The unit reached Mode 3 (Hot Standby) at 0643 PST. On November 10, 2002, at 1743 PST, operators paralleled Unit 2 to the grid. On November 11, 2002, operators completed the ramp to approximately 100 percent power.

Actuations of Safety or Pressurizer Power Operated Relief Valves There were no challenges to the pressurizer power operated relief valves, pressurizer safety valves, or steam generator safety valves.

Enclosure 2 PG&E Letter DCL-02-143 OPERATING DATA REPORT DOCKET NO.: 50-275 UNIT NAME: Diablo Canyon Unit 1 DATE: 12/01/2002 COMPLETED BY: L. M. Parker TELEPHONE: (805) 545-3386 REPORT MONTH: November 2002

1. Design Electrical Rating (MWe - Net): ' 1,103

2. Maximum Dependable Capacity (MWe - Net): 1,087 This Month YTD Cumulative

3. Number of Hours Reactor Critical: 0.0 6,306.3 133,726.3

4. Number of Hours Generator On-Line: 0.0 6,188.2 132,230.5

5. Unit Reserve Shutdown Hours: 0.0 0.0 0.0

6. , Net Electrical Energy Generated (MWH): 0.0 6,596,074 136,754,163 I

K Enclosure 2 PG&E Letter DCL-02-143 UNIT SHUTDOWNS DOCKET NO.: 50-275.,ý.

UNIT NAME: Diablo Canyon Unit 1 DATE: 12/01/2002 COMPLETED BY: L. M. Parker TELEPHONE: (805) 545-3386 REPORT MONTH: November 2002 NO. DATE TYPE F(Forced)

DURATION (HOURS) REASON' METHOD OF & CORRECTIVE CAUSEACTIONS S (Scheduled) SHUTTING DOWN2 2 COMMENTS 3 021020 S 720.0 A 4 Unit 1 entered a planned mid-cycle shutdown in October to investigate generator vibrations. The rotor is being replaced thus extending the outage.

1. Reason 2. Method A-Equipment Failure (Explain) 1-Manual B-Maintenance or Test 2-Manual Trip/Scram C-Refueling 3-Automatic Trip/Scram D-Regulatory Restriction 4-Continuation from Previous Month E-Operator Training/License Examination 5-Other F- Administrative G-Operational Error (Explain)

H-Other (Explain) 2

Enclosure 2 I

• PG&E Letter DCL-02-143 OPERATING DATA REPORT DOCKET NO.: 50-323- -'

UNIT NAME: Diablo Canyon Unit 2 DATE: 12/01/2002 COMPLETED BY: L. M. Parker TELEPHONE: (805) 545-3386 REPORT MONTH: November 2002

1. Design Electrical Rating (MWe - Net): 1 1119

2. Maximum Dependable Capacity (MWe - Net): 1087 This Month YTD Cumulative

3. Number of Hours Reactor Critical: 668.6 7932.7 130,614.5

4. Number of Hours Generator On-Line: 660.9 7,919.9 129,143.9

5. Unit Reserve Shutdown Hours: 0.0 0.0 0.0

6. Net Electrical Energy Generated (MWH): 692,653 8,507,854 135,913,786 3

I, . I Enclosure 2 PG&E Letter DCL-02-143 UNIT SHUTDOWNS DOCKET NO.: 50-323, ,

UNIT NAME: DiabloCanyon Unit 2 DATE: 12/01/2002 COMPLETED BY: L. M. Parker TELEPHONE: (805) 545-3386 REPORT MONTH: November 2002 NO. DATE TYPE DURATION REASON1 METHOD CAUSE & CORRECTIVE FYMMD F(Forced)(HOURS)

(Fre) OF O ACTIONS "MMDD) S (Scheduled) SHUTTING COMMENTS DOWN2 2 021108 F 59.1 A 1 Operators performed a planned ramp to 20%

power in early November due to high swell warnings. A high pressure differential across the intake screens, due to high swells and heavy kelp loading, caused operators to shut down circulating water pumps, manually trip the turbine, and shut down the reactor.

1. Reason 2. Method A-Equipment Failure (Explain) 1-Manual B-Maintenance or Test 2-Manual Trip/Scram C-Refueling 3-Automatic Trip/Scram D-Regulatory Restriction 4-Continuation from Previous Month E-Operator Training/License Examination 5-Other F- Administrative G-Operational Error (Explain)

H-Other (Explain) 4