DCL-04-060, April 2004 Monthly Operating Report for Diablo Canyon Units 1 and 2

April 2004 Monthly Operating Report for Diablo Canyon Units 1 and 2

ML041390254
Person / Time
Site:	Diablo Canyon
Issue date:	05/14/2004
From:	Becker J Pacific Gas & Electric Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
DCL-04-060, GL-87-002, OL-DPR-80, OL-DPR-82
Download: ML041390254 (8)

Text

I Pacidc Gas and

./q6 Electric Company James R.Becker Diablo Canyon Power Plant Vice President-Diablo Canyon PO. Box 56 Operations and Station Director Avila Beach, CA 93424 805.545.3462 Fax: 805.545.4234 May 14, 2004 PG&E Letter DCL-04-060 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 April 2004

Dear Commissioners and Staff:

Enclosed is the Monthly Operating Report (MOR) for Diablo Canyon Power Plant, Units 1 and 2, for April 2004. This report is submitted in accordance with Technical Specification 5.6.4 and NRC Generic Letter 97-02.

Enclosure 3 contains revised pages from the March MOR with corrected year-to-date and cumulative values for reactor critical hours, generator on-line hours, and net electrical generation.

Sincerely, James smg/4692/R0258528 Enclosures cc/enc: Paul R. Fox, American Nuclear Insurers Robert D. Glynn, Jr.

Bruce S. Mallett, NRC Regional Administrator, Region IV David L. Prouix, NRC Senior Resident Inspector Gregory M. Rueger Girija S. Shukla, NRC Project Manager INPO Record Center 1jec 4 A member of the STARS (Strategic Teaming and Resource Sharing) Atliance Callaway

• Comanche Peak

• Diablo Canyon

• Palo Verde

• South Texas Project

• Wolf Creek

Enclosure 1 PG&E Letter DCL-04-060 APRIL 2004, OPERATION SUMMARIES DIABLO CANYON POWER PLANT UNITS I AND 2 Summary of Unit I Operation Unit 1 began the month in No Mode with the core fully off-loaded (defueled), continuing the refueling outage (1R12) that began on March 22, 2004. The unit ended the month in Mode 6 (Refueling) with the core fully loaded.

Summary of Unit 2 Operation Unit 2 remained in Mode 1, at approximately 100 percent power, during April 2004.

There were no significant operational activities.

Actuations of Pressurizer Safety or 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-04-060 OPERATING DATA REPORT DOCKET NO.: 50-275 UNIT NAME: Diablo Canyon Unit 1 DATE: 5/04/2004 COMPLETED BY: S. Guess TELEPHONE: (805) 545-4692 REPORT MONTH: April 2004 I1. I Design Electrical Rating (Mwe - Net): l 1,103 l

2. I Maximum Dependable Capacity (Mwe - Net): l 1,087 1 This Month YTD* Cumulative*

3. Number of Hours Reactor Critical: 0.0 1,947.5 144,934.3

4. Number of Hours Generator On-Line: 0.0 1,947.1 143,416.7

5. Unit Reserve Shutdown Hours: 0.0 0.0 0.0

6. Net Electrical Energy Generated (MWH): 0 1,975,475 148,767,205

• YTD and Cumulative values for reactor critical hours, generator on-line hours, and net electrical generation incorporate a correction due to a data entry error made in the Monthly Operating Report (MOR) for March 2004.

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Enclosure 2 PG&E Letter DCL-04-060 UNIT SHUTDOWNS DOCKET NO.: 50-275 UNIT NAME: Diablo Canyon Unit 1 DATE: 5/04/2004 COMPLETED BY: S. Guess TELEPHONE: (805) 545-4692 REPORT MONTH: April 2004 NO. DATE TYPE DURATION REASON' METHOD CAUSE & CORRECTIVE (WMMDD)

F(Forced) (HOURS)

S(Sch~eduled)SHTIGCMES OF ACTIONS DOWN 2 1 040322 S 719.0 C 4 Scheduled refueling shutdown at the end of L cycle 12 (1 R12)

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-04-060 OPERATING DATA REPORT DOCKET NO.: 50-323 UNIT NAME: Diablo Canyon Unit 2 DATE: 5/04/2004 COMPLETED BY: S. Guess TELEPHONE: (805) 545-4692 REPORT MONTH: April 2004 I 1. I Design Electrical Rating (MWe - Net): l 1,119 l l 2. l Maximum Dependable Capacity (MWe - Net): 1,087 This Month YTD* Cumulative*

3. Number of Hours Reactor Critical: 719.0 2,903.0 141,552.9

4. Number of Hours Generator On-Line: 719.0 2,903.0 140,017.1

5. Unit Reserve Shutdown Hours: 0.0 0.0 0.0

6. Net Electrical Energy Generated (MWH): 785,057 3,132,751 147,549,968

• YTD and Cumulative values for reactor critical hours, generator on-line hours, and net electrical generation incorporate a correction due to a data entry error made in the Monthly Operating Report for March 2004.

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Enclosure 2 PG&E Letter DCL-04-060 UNIT SHUTDOWNS DOCKET NO.: 50-323 UNIT NAME: Diablo Canyon Unit 2 DATE: 5/04/2004 COMPLETED BY: S. Guess TELEPHONE: (805) 545-4692 REPORT MONTH: April 2004 NO. DATE TYPE DURATION REASON1 METHOD CAUSE & CORRECTIVE

.(YMMDD) F(Forced) (HOURS) OF ACTIONS S (Scheduled) SHUTTING COMMENTS DOWN 2 _ _ _ _ _ _ _ _

N/A There 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) 4

3 Enclosure Enclosure 3 PG&E Letter DCL-404-44 04-060 OPERATING DATA REPORT DOCKET NO.: 50-275 UNIT NAME: Diablo Canyon Unit 1 DATE: 4I06/2004 5/4/2004 I COMPLETED BY: L. Parker TELEPHONE: (805) 545-3386 REPORT MONTH: March 2004 I 1. I Design Electrical Rating (Mwe - Net): 1 1,103 l 2. lMaximum Dependable Capacity (Mwe - Net): l 1,087 This Month YTD Cumulative

3. Number of Hours Reactor Critical: 507.5 4,923.5 144,910.3 1,947.5 144,934.3

4. Number of Hours Generator On-Line: 507.1 4,923.4 143,392.7 1,947.1 143,416.7

5. Unit Reserve Shutdown Hours: 0.0 0.0 0.0

6. Net Electrical Energy Generated (MWH): 468,414 4,953444 448,744,874 1,975,475 148,767,205 5

Enclosure 3 Enclosure 3 PG&E Letter DCL-04 -044 04-060 OPERATING DATA REPORT DOCKET NO.: 50-323 UNIT NAME: Diablo Canyon Unit 2 DATE: 4106/2004 5/4/2004 COMPLETED BY: L. Parker I TELEPHONE: (805) 545-3386 REPORT MONTH: March 2004 I 1. I Design Electrical Rating (MWe - Net): l 1,119 l 2. l Maximum Dependable Capacity (MWe - Net): l 1,087 This Month YTD Cumulative

3. Number of Hours Reactor Critical: 744.0 2,160.0 140,809.9 2,184.0 140,833.9

4. Number of Hours Generator On-Line: 744.0 - 2,160.0 139,274.1 2,184.0 139,298.1

5. Unit Reserve Shutdown Hours: 0.0 0.0 0.0

6. Net Electrical Energy Generated (MWH): 810,936 2,321,7351 46.7-38,952 2,347,694 146,764,911 6