DCL-04-115, August 2004 Monthly Operating Report for Diablo Canyon Units 1 and 2 and Corrected June and July Data Sheets

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August 2004 Monthly Operating Report for Diablo Canyon Units 1 and 2 and Corrected June and July Data Sheets
ML042680325
Person / Time
Site: Diablo Canyon  Pacific Gas & Electric icon.png
Issue date: 09/15/2004
From: Becker J
Pacific Gas & Electric Co
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
DCL-04-115, GL-97-002, OL-DPR-80, OL-DPR-82
Download: ML042680325 (7)
v • d • e


Text

Pacific Gasand Electric Company James R.Becker Diablo Canyon Power Plant Vice President-Diablo Canyon PO. Box 56 Operations and Station Director Avila Beach, CA 93424 September 15, 2004 805.545.3462 Fax: 805.545.4234 PG&E Letter DCL-04-115 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 August 2004. and Corrected June and July Data Sheets

Dear Commissioners and Staff:

Enclosed is the Monthly Operating Report for Diablo Canyon Power Plant, Units 1 and 2, for August 2004. This report is submitted in accordance with Technical Specification 5.6.4 and NRC Generic Letter 97-02. Note the format change, which is a transition to the new INPO consolidated data entry (CDE) system for this report.

During the transition to the new database, two data entry errors were identified and corrected: June Unit I cumulative generation and July Unit 1 monthly generation.

The affected data sheets for June and July are enclosed in the INPO CDE format, and supersede the previous submittals (DCL-04-087, DCL-04-103).

Sincerely James R. Be er Imp/3386/R0263660 Enclosures cc/enc: Paul R. Fox, American Nuclear Insurers Robert D. Glynn, Jr.

Bruce S. Mallett, NRC Regional Administrator, Region IV David L. Proulx, NRC Senior Resident Inspector Gregory M. Rueger Girija S. Shukla, NRC Project Manager INPO Record Center I-Ir A member of the STARS (Strategic Teaming and Resource Sharing) Alliance D.'ez Callaway

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

OPERATING DATA REPORT DOCKET NO. 50-275 UNIT NAME Diablo Canyon I DATE September 13, 2004 COMPLETED BY Larry Parker TELEPHONE (805) 545-3386 REPORTING PERIOC June 2004

1. Design Electrical Rating 1,103.00
2. Maximum Dependable Capacity (MWe-Net) 1,087.00 This Month Yr-to-Date Cumulative
3. Number of Hours the Reactor was Critical 656.52 2,624.57 145,611.37
4. Number of Hours Generator On-line 556.98 2,504.11 143,973.71
5. Reserve Shutdown Hours 0.00 0.00 0.00
6. Net Electrical Energy Generated (MWHrs) 468,494.00 2,443,969.00 149,235,699.00 UNIT SHUTDOWNS Type Method of No. Date F: Forced Duration Reason Shutting Cause & Corrective Action No. _Date S: Scheduled Hours Reason Down 2 Comments 1 03/22/2004 S 158.97 C 4 Unit 1 Refueling Outage 12.

n/a 06/12/2004 F 4.05 B 5 Unit taken off-line to repair a moisture separator reheater relief valve. Unit remained in Mode 1.

SUMMARY

Unit 1 began the month in Mode 3 (Hot Standby), continuing the refueling outage (1R12) that began March 22, 2004. On June 3, 2004, unit I reactor was declared critical. On June 7, 2004, operators entered Mode 1 (Power Operation), and paralleled the unit to the grid, therefore, completing the refueling outage. On June 12, 2004, operators took the unit off-line to repair a moisture separator reheater relief valve RV-2A. On June 12, 2004, repairs to RV-2A were completed and the unit paralleled to the grid with the resumption of power ascension. The unit ended the month in Mode 1 at approximately 100 percent power. There were no challenges to the pressurizer power operated relief valves, pressurizer safety valves, or steam generator safety valves.

I 2 Reason: Method:

A Equipment Failure (Explain) I Manual B Maintenance or Test 2 Manual Trip/Scram C Refueling 3 Automatic Trip/Scram D Regulatory Restriction 4 Continuation E Operator Training & License Examination 5 Other (Explain)

F Administration G Operational Error (Explain)

H Other (Explain)

Page 1 of 1

OPERATING DATA REPORT DOCKET NO. 50-323 UNIT NAME Diablo Canyon 2 DATE September 08, 2004 COMPLETED BY TELEPHONE REPORTING PERIOD June 2004

1. Design Electrical Rating .1,119.00
2. Maximum Dependable Capacity (MWe-Net) 1,087.00 This Month Yr-to-Date Cumulative
3. Number of Hours the Reactor was Critical 720.00 4,367.00 143,016.90
4. Number of Hours Generator On-line 720.00 4,367.00 141,481.13 S. Reserve Shutdown Hours 0.00 0.00 0.00
6. Net Electrical Energy Generated (MWHrs) 743,994.00 4,687,196.00 149,104,413.00 UNIT SHUTDOWNS Type Method of No. Date F: Forced Duration Reason Shutting Cause & Corrective Action S: Scheduled (Hours) Down 2 Comments

SUMMARY

Unit 2 began the month in Mode 1 at approximately 100 percent power. On June 18, 2004, the operators began a planned reduction in power to approximately 53 percent power to remove biofouling from the circulating water tunnel. On June 22, 2004, the unit was returned to approximately 100 percent power. The unit ended the month in Mode I at approximately 100 percent power.

I 2 Reason: Method:

A Equipment Failure (Explain) I Manual B Maintenance or Test 2 Manual TriplScram C Refueling 3 Automatic TriplScram D Regulatory Restriction 4 Continuation E Operator Training & License Examination 5 Other (Explain)

F Administration G Operational Error (Explain)

H Other (Explain)

Page 1 of 1

OPERATING DATA REPORT DOCKET NO. 50-275 UNIT NAME Diablo Canyon 1 DATE September 13, 2004 COMPLETED BY Larry Parker TELEPHONE (805) 545-3386 REPORTING PERIOD: July 2004

1. Design Electrical Rating 1.103.00
2. Maximum Dependable Capacity (MWe-Net) 1,087.00 This Month Yr-to-Date Cumulative
3. Number of Hours the Reactor was Critical 703.80 3,328.37 146,315.17
4. Number of Hours Generator On-line 693.00 3,197.11 144,666.71
5. Reserve Shutdown Hours 0.00 0.00 0.00
6. Net Electrical Energy Generated (MWHrs) 747,801.00 3,191,770.00 149,983,500.00 UNIT SHUTDOWNS Type Method of No. Date F: Forced Duration Reason Shutting Cause & Corrective Action No. Date S: Scheduled (Hours) Reason Down 2 Comments 2 07/2112004 F 51.00 D I Tech Spec Required Shutdown to repair a CCW leak on RCP 1-3. Reference NRC Event Number 40890.

SUMMARY

Unit 1 began July in Mode 1 (Power Operation) at approximately 100 percent power. On July 21, 2004, operators initiated an unplanned Tech Spec required shutdown and separated the unit from the grid to repair a component cooling water leak (crack) inside containment (reference NRC Event Number 40890). On July 22, 2004, the reactor was taken to Mode 3 (Hot Standby). On July 24, 2004, after completing repairs, operators paralleled the unit to the grid, and initiated a ramp to full power. The unit ended the month in Mode 1 at approximately 100 percent power.

I 2 Reason: Method:

A Equipment Failure (Explain) I Manual B Maintenance or Test - 2 Manual TriplScram C Refueling 3 Automatic Trip/Scram D Regulatory Restriction 4 Continuation E Operator Training & License Examination 5 Other (Explain)

F Administration G Operational Error (Explain)

H Other (Explain)

Page 1 of 1

OPERATING DATA REPORT DOCKET NO. 50-323 UNIT NAME Diablo Canyon 2 DATE August 12, 2004 COMPLETED BY Larry Parker TELEPHONE (805) 545-3386 REPORTING PERIOD: July 2004

1. Design Electrical Rating 1,119.00
2. Maximum Dependable Capacity (MWe-Net) 1,087.00 This Month Yr-to-Date Cumulative
3. Number of Hours the Reactor was Critical 744.00 5,111.00 143,760.90
4. Number of Hours Generator On-line 744.00 5,111.00 142,225.13 S. Reserve Shutdown Hours 0.00 0.00 0.00
6. Net Electrical Energy Generated (MWHrs) 802,027.00 5,489,223.00 149,906,440.00 UNIT SHUTDOWNS Type Method of No. Date F: Forced Duration Reason1 Shutting Cause & Corrective Action S: Scheduled (Hours) Down 2 Comments

SUMMARY

Unit 2 began July in Mode 1 at approximately 100 percent power. On July 24, 2004, operators performed a planned ramp of the unit to approximately 50 percent in order to remove biofouling from the main condenser tube sheet and water box. On July 25, 2004, after completing condenser maintenance, operators ramped the unit to approximately 100 percent power.

1 2 Reason: Method:

A Equipment Failure (Explain) I Manual B Maintenance or Test 2 Manual TriplScram C Refueling 3 Automatic TriplScram D Regulatory Restriction 4 Continuation E Operator Training & License Examination 5 Other (Explain)

F Administration G Operational Error (Explain)

H Other (Explain)

Page 1 of I

OPERATING DATA REPORT DOCKET NO. 50-275 UNIT NAME Diablo Canyon 1 DATE September 08, 2004 COMPLETED BY Larry Parker TELEPHONE (805) 545-3386 REPORTING PERIOD August 2004

1. Design Electrical Rating 1,103.00
2. Maximum Dependable Capacity (MWe-Net) 1,087.00 This Month Yr-to-Date Cumulative
3. Number of Hours the Reactor was Critical 744.00 4,072.37 147,059.17
4. Number of Hours Generator On-line 744.00 3,941.11 145,410.71
5. Reserve Shutdown Hours 0.00 0.00 0.00
6. Net Electrical Energy Generated (MWHrs) 821,756.00 4,013,526.00 150,805,256.00 UNIT SHUTDOWNS Type Method of No. Date F: Forced Duration Reasoni Shutting Cause & Corrective Action S: Scheduled (Hours) Down 2 Comments

SUMMARY

Unit 1 remained in Mode 1 (Power Operation), at approximately 100 percent power during August 2004. There were no challenges to the pressurizer power operated relief valves, pressurizer safety valves, or steam generator safety valves.

I 2 Reason: Method:

A Equipment Failure (Explain) I Manual B Maintenance or Test 2 Manual TriplScram C Refueling 3 Automatic TriplScram D Regulatory Restriction 4 Continuation E Operator Training & License Examination 5 Other (Explain)

F Administration G Operational Error (Explain)

H Other (Explain)

Page 1 of 1

OPERATING DATA REPORT DOCKET NO. 50-323 UNIT NAME Diablo Canyon 2 DATE September 07, 2004 COMPLETED BY Larry Parker TELEPHONE (805) 545-3386 REPORTING PERIOD: August 2004

1. Design Electrical Rating 1,119.00
2. Maximum Dependable Capacity (MWe-Net) 1,087.00 This Month Yr-to-Date Cumulative
3. Number of Hours the Reactor was Critical 744.00 5.855.00 144,504.90
4. Number of Hours Generator On-line 744.00 5,855.00 142,969.13
5. Reserve Shutdown Hours 0.00 0.00 0.00
6. Net Electrical Energy Generated (MWHrs) 802,363.00 6,291,586.00 150,708,803.00 UNIT SHUTDOWNS Type Method of No. Date F: Forced Duration Reason Shutting Cause & Corrective Action S: Scheduled (Hours) Down 2 Comments

SUMMARY

Unit 2 began August in Mode I (Power Operation) at approximately 100 percent power. On August 20, 2004, operators performed a planned ramp to appoximately 50 percent power to remove biofouling from the main condenser and circulating water pump forebay. On August 21, 2004, operators ramped the unit to approximately 100 percent power. There were no challenges to the pressurizer power operated relief valves, pressurizer safety valves, or steam generator safety valves.

I 2 Reason: Method:

A Equipment Failure (Explain) I Manual B Maintenance or Test 2 Manual Trip/Scram C Refueling 3 Automatic TriplScram D Regulatory Restriction 4 Continuation E Operator Training & License Examination 5 Other (Explain)

F Administration G Operational Error (Explain)

H Other (Explain)

Page 1 of 1

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