DCL-03-038, March 2003 Monthly Operating Report for Diablo Canyon Units 1 & 2

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March 2003 Monthly Operating Report for Diablo Canyon Units 1 & 2
ML031130453
Person / Time
Site: Diablo Canyon  Pacific Gas & Electric icon.png
Issue date: 04/15/2003
From: Becker J
Pacific Gas & Electric Co
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
DCL-03-038, GL-97-002
Download: ML031130453 (6)
v • d • e


Text

Pacific Gas and Electric Company James R.Becker Diablo Canyon Power Plant Vice President-Diablo Canyon P0 Box 56 Operations and Station Director Avila Beach, CA 93424 805 545 3462 April 15, 2003 Fax 805 545 4234 PG&E Letter DCL-03-038 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 1 and 2 Monthly Operating Report for March 2003

Dear Commissioners and Staff:

Attached is the Monthly Operating Report for Diablo Canyon Power Plant, Units 1 and 2, for March 2003. This report is submitted in accordance with Technical Specification 5.6.4 and NRC Generic Letter 97-02.

Sincerely, James R. ker LMP/1713/R0244430 Enclosures cc/enc: Paul R. Fox, American Nuclear Insurers Robert D. Glynn, Jr.

Ellis W. Merschoff, NRC Regional Administrator, Region IV David L. Prouix, 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) Alliance Callaway

  • Comanche Peak
  • Diablo Canyon
  • Palo Verde
  • Wolf Creek O

Enclosure 1 PG&E Letter DCL-03-038 MARCH 2003, OPERATION SUMMARIES DIABLO CANYON POWER PLANT UNITS 1 AND 2 Summary of Unit 1 Operation Unit 1 began March in Mode 1 (Power Operation) at approximately 100 percent power.

There were no significant operational activities.

Summary of Unit 2 Operation Unit 2 began March in Mode 6 (Refueling), continuing the refueling outage (2R1 1) that began on February 3, 2003. On March 17, 2003, with Unit 2 in Mode 3 (Hot Standby),

during testing of the digital rod position indication (DRPI), operators manually tripped the reactor due to a mismatch in control rod position indication. On March 24, 2003, operators entered Mode 2 (Startup) and took the reactor critical. On March 26, 2003, operators entered Mode 1 and paralleled Unit 2 to the grid, thus completing the refueling outage. On March 28, 2003, with Unit 2 at approximately 48 percent power, operators initiated an unplanned shutdown to Mode 3 in order to replace a faulty nuclear instrument (NI-42). On March 29, 2003, after replacing and testing NI-42, operators entered Mode 2 and took the reactor critical. On March 30, 2003, operators paralleled Unit 2 to the grid.

Unit 2 ended the month at approximately 44 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-03-038 OPERATING DATA REPORT DOCKET NO.: 50-275 UNIT NAME: Diablo Canyon Unit 1 DATE: 04/04/2003 COMPLETED BY: L. M. Parker TELEPHONE: (805) 545-3386 REPORT MONTH: March 2003 I 1. I Design Electrical Rating (MWe - Net): l 1,103 l

2. Maximum Dependable Caacity Mwe - Net: 1,087 V T This Month YTD Cumulative
3. Number of Hours Reactor Critical: 744.0 2,160.0 136,386.8
4. Number of Hours Generator On-Line: 744.0 2,160.0 134,869.6
5. Unit Reserve Shutdown Hours: 0.0 0.0 0.0
6. Net Electrical Energy Generated (MWH): 821,069 2,386,901 139,593,200 1

Enclosure 2 PG&E Letter DCL-03-038 UNIT SHUTDOWNS DOCKET NO.: 50-275 UNIT NAME: Diablo Canyon Unit 1 DATE: 04/04/2003 COMPLETED BY: L. M. Parker TELEPHONE: (805) 545-3386 REPORT MONTH: March 2003 NO. DATE TYPE DURATION REASON1 METHOD CAUSE & CORRECTIVE (YM)F (Forced)

S (Scheduled) (HOURS) OF SHUTTING ACTIONS COMMENTS DOWN 2 CMET N/AThere were no shutdowns this month.

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 PG&E Letter DCL-03-038 OPERATING DATA REPORT DOCKET NO.: 50-323 UNIT NAME: Diablo Canyon Unit 2 DATE: 04/04/2003 COMPLETED BY: L. M. Parker TELEPHONE: (805) 545-3386 REPORT MONTH: March 2003 I 1. I Design Electrical Rating (MWe - Net): I 1119 I

2. l Maximum Dependable Capacity (MWe - Net): l 1087 l This Month YTD Cumulative
3. Number of Hours Reactor Critical: 145.0 942.4 132,300.9
4. Number of Hours Generator On-Line: 103.1 900.0 130,787.9
5. Unit Reserve Shutdown Hours: 0.0 0.0 0.0
6. Net Electrical Energy Generated (MWH): 35,145 896,103 137,588,093 3

Enclosure 2 PG&E Letter DCL-03-038 UNIT SHUTDOWNS DOCKET NO.: 50-323 UNIT NAME: Diablo Canyon Unit 2 DATE: 04/04/2003 COMPLETED BY: L. M. Parker TELEPHONE: (805) 545-3386 REPORT MONTH: March 2003 NO. DATE TYPE DURATION REASON1 METHOD CAUSE & CORRECTIVE (YYMMDD) F(Forced)

S (Scheduled)

(HOURS) SUTN OF ACTIONS SHUTTNG2 COMMENTS 1 030203 S 608.4 C 4 Refueling Outage 11 2 030328 F 32.5 A 1 Nuclear Instrumentation (Nl-42) (power range) failed. This maintenance could not be performed in Modes 1 or 2. The NI was replaced while shutdown in Mode 3 and the unit was then returned to service.

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

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