05000250/LER-1981-004-03, During Power Operation Auxiliary Feedwater Pump a Failed to Meet Acceptance Criteria Per Tech Spec 4.10.1.Caused by Damaged Valve Plug. Cause of Damage Not Determined.Stem & Plug Replaced

During Power Operation Auxiliary Feedwater Pump a Failed to Meet Acceptance Criteria Per Tech Spec 4.10.1.Caused by Damaged Valve Plug. Cause of Damage Not Determined.Stem & Plug Replaced

ML17340B254
Person / Time
Site:	Turkey Point
Issue date:	04/29/1981
From:	Pace P FLORIDA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML17340B253	List: 05000250/LER-1981-004, Forwards Updated LER 81-004/03X-1 05000250/LER-1981-004-03, During Power Operation Auxiliary Feedwater Pump a Failed to Meet Acceptance Criteria Per Tech Spec 4.10.1.Caused by Damaged Valve Plug. Cause of Damage Not Determined.Stem & Plug Replaced
References
LER-81-004-03X, LER-81-4-3X, NUDOCS 8105270314
Download: ML17340B254 (4)

LER-1981-004, During Power Operation Auxiliary Feedwater Pump a Failed to Meet Acceptance Criteria Per Tech Spec 4.10.1.Caused by Damaged Valve Plug. Cause of Damage Not Determined.Stem & Plug Replaced

Event date:
Report date:
2501981004R03 - NRC Website

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$4 6V6NT 06SCRIPTION ANO PROBASL6 CONSccU6>4C6S Qlo During power operation, the 'A'uxiliary Feedwater (AFH) pump failed to meet the acceptance criteria of the surveillance at TS 4.10.1.

The

'B'o was tested and returned to service within 19 hours2.199074e-4 days <br />0.00528 hours <br />3.141534e-5 weeks <br />7.2295e-6 months <br />.

Operation continued 9

pursuant to TS 3.8.3.

The most recent occurrences relating to the AFV and 'O'FM pumps were operable.

The problem was corrected, and the pump

~Q system were reported as LER 250-80-18 and LER 251-80-6.

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('A'FW steam turbine pressure control valve) was damaged.

The zoot cause of the damage could not be determined.

The stem and plug were 2

replaced.

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REPORTABLE OCCURRENCE 250-

- 04, UPDATE 1 LICENSEE EVENT REPORT PAGE TI10 Additional Cause Descri tion and Corrective Actions:

The acceptance criteria was not met because the valve plug in CV-3705'('A'FIRE'team turbine pressure control valve) was damaged.

The damage to the valve plug was apparently caused by a thin piece of metal (approximately

~g" x 2") which appeared to be surface hardened.

An inspection of the piping upstream of the valve was performed, but the source of the metal could not be determined.

The metal was removed, and the stem and plug were replaced.