GO2-04-182, September 2004 Monthly Operating Report for Columbia Generating Station

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September 2004 Monthly Operating Report for Columbia Generating Station
ML042950607
Person / Time
Site: Columbia Energy Northwest icon.png
Issue date: 10/15/2004
From: Oxenford W
Energy Northwest
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
GO2-04-182
Download: ML042950607 (3)
v • d • e


Text

ENERGY NORTHWEST People. Vision - Solutions P.O. Box 968

  • Richland, WA
  • 99352-0968 October 15, 2004 G02-04-182 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555-0001

Subject:

COLUMBIA GENERATING STATION, DOCKET NO. 50-397 MONTHLY OPERATING REPORT SEPTEMBER 2004

Dear Sir or Madam:

Transmitted herewith is the Monthly Operating Report for the month of September 2004 as required by Technical Specification 5.6.4.

Respectfully, WS Oxeo Plant Gen a Manager Mail Drop 27M Attachment cc: BS Mallett - NRC RIV WA Macon - NRC NRR NRC Senior Resident Inspector - 988C TC Poindexter - Winston & Strawn INPO ANI Library Utility Data Institute RN Sherman - BPA /1399

OPERATING STATUS REPORT for Columbia Generating Station Date: October 1, 2004

1. Docket: 50-397
2. Reporting Period: September 2004
3. Utility

Contact:

Patricia Campbell (509) 377-4664

4. Design Electrical Rating (Net MWe): 1153
5. Maximum Dependable Capacity - summer (Net MWe): 1107 MONTH YEAR CUMULATIVE
6. "--HoursReactor Critical- -720;0-- ^67100.1 132,958.6
7. Hours Generator On-Line 720.0 6,013.8 129,427.4
8. Unit Reserve Shutdown Hours 0.0 0.0 3,274.7
9. Net Electrical Energy (MWH) 791,277 6,534,399 129,402,051

UNIT SHUTDOWNS DOCKET NO.: 50-397 UNIT NAME: Columbia Generating Station DATE: October 1, 2004 COMPLETED BY: P. Campbell TELEPHONE: (509) 377-4664 REPORT PERIOD: September, 2004 I Type Method of Cause / Corrective Actions No ae F: Forced Duration Shutting N Da S: Scheduled ours) Reason (l) Down (2) _ Comments l N/A _ I _ __I ______

SUMMARY

Columbia Generating Station began and ended the month at 100% power. On September 5, 2004 power was reduced to about 73% to repair an oil leak on COND-F-3B. Full power was resumed on the afternoon of September 5, 2004. On August 15th the reactor was manually scrammed in response to a feedwater pump trip. The cause was a combination of reduced hotwell level controller response (adjusted to the high tend of the control band) and the shutdown water management condition (higher than normal water inventory in the Condensate Storage and Transfer system). High water level in the main condenser hotwell overflowed to cause a high water level in the feedwater drive turbine condenser drain tank and resulted in a trip signal to the feedwater pumps.

(1) REASON (2) METHOD A - Equipment Failure E - Operator Training & I - Manual B - Maintenance or Test License Examination 2 - Manual Trip/Scram C - Refueling F - Administration 3 - Auto Trip/Scram D - Regulatory Restriction G - Operational Error 4 - Continuation H - Other 5 - Other (Explain)

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