ML051670200

May 2005 Monthly Operating Reports for San Onofre Nuclear Generating Station Units 2 and 3

ML051670200
Person / Time
Site:	San Onofre
Issue date:	06/14/2005
From:	Scherer A Southern California Edison Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML051670200 (5)

Text

SOUTHERN CALIFORNIA A. Edward Scherer EDISON' Manager of Nuclear Regulatory Affairs An EDISON0INTERA'\'TIONAIl Company June 14, 2005 U. S. Nuclear Regulatory Commission Document Control Desk Washington, D.C. 20555

Subject:

Docket Nos. 50-361 and 50-362 Monthly Operating Reports for May 2005 San Onofre Nuclear Generating Station, Units 2 and 3 Gentlemen:

This letter provides the Monthly Operating Reports for May 2005 for the San Onofre Nuclear Generating Station Units 2 and 3 (see Attachments 1 and 2).

If you have any questions, please contact Mr. C. E. Williams at (949) 368-6707.

Sincerely, Attachments 1 and 2 cc: B. S. Mallett, Regional Administrator, NRC Region IV B. M. Pham, NRC Project Manager, San Onofre Units 2 & 3 C. C. Osterholtz, NRC Senior Resident Inspector, San Onofre Units 2 & 3 P.O. Box 128 San Clemente, CA 92672 949-368-7501 Fax 949-368-7575 5

Attachment 1 Monthly Operating Report, May 2005 San Onofre Nuclear Generating Station, Unit 2

OPERATING DATA REPORT DOCKET NO. i50-361 UNIT NAME 2San Onofre 2 DATE June 14, 2005 COMPLETED BY IClay Williams TELEPHONE I)49-N68707 REPORTING PERIOD: May 2005

1. Design Electrical Rating 1,070.00

2. Maximum Dependable Capacity (MWe-Net) 1,070.00 This Month Yr-to-Date Cumulative

3. Number of Hours the Reactor was Critical 744.00 3,030.44 156,261.08

4. Number of Hours Generator On-line 744.00 2,979.48 154,172.25

5. Reserve Shutdown Hours 0.00 0.00 0.00

6. Net Electrical Energy Generated (MWHrs) 829,853.41 3,216,036.17 165,400,016.31 UNIT SHUTDOWNS Type Method of F: Forced Duration Shutting Cause & Corrective Action S: Scheduled (Hours) Down 2 Comments

SUMMARY

5/01105: Unit in Mode 1. 5/31/05: Unit in Mode 1.

There were no challenges to the pressurizer safety valves during the month.

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 & iUcense Examination 5 Other (Explain)

F Administration G Operational Error (Explain)

H Other (Explain)

Attachment 2 Monthly Operating Report, May 2005 San Onofre Nuclear Generating Station, Unit 3

OPERATING DATA REPORT DOCKET NO. 0-362 UNIT NAME San Onofre 3 DATE June 14,2005 COMPLETED BY T;lay Willams TELEPHONE W49-368-6707 REPORTING PERIOD: May 2005

1. Design Electrical Rating 1,080.00

2. Maximum Dependable Capacity (MWe-Net) 1,080.00 This Month Yr-to-Date Cumulative

3. Number of Hours the Reactor was Critical 634.63 3,513.63 153,303.83

4. Number of Hours Generator On-line 600.18 3.479.18 151,043.26

5. Reserve Shutdown Hours 0.00 0.00 0.00

6. Net Electrical Energy Generated (MWHrs) *654.086.11 3,730,271.62 160,248,115.78 UNIT SHUTDOWNS Type Method of F: Forced Duration Shutting Cause & Corrective Action No._DateS: Scheduled (Hours) Reason Down 2 Comments 2005-01 05/05/2005 S 143.82 B 1 The unit was shutdown at this time to: 1) repair a hydraulic leak in the actuator for Feedwater Block valve 3HV4051 and 2) replace a section of the steam bypass line piping. Neither condition prevented continued plant operation.

SUMMARY

05/01/05 at 0000: Unit in Mode 1. 05105/05 at 0113: Unit in Mode 3 following a manual reactor trip.

05/09/05 at 1318: Unit in Mode 2. 05/10/05 at 1431: Unit in Mode 1. 05/11/05 at 0050: Generator Synchronized to Grid. 05/12/05 at 1445: Unit essentially at Full Power.

There were no challenges to the pressurizer safety valves during the month.

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)