05000251/LER-1979-011-03, Charging Sys Performance Noted to Be Degraded During Routine Startup Operation.Caused by Ruptured Diaphragm & Damaged O-ring on Valve.Valve Repaired & Pumps Vented

Charging Sys Performance Noted to Be Degraded During Routine Startup Operation.Caused by Ruptured Diaphragm & Damaged O-ring on Valve.Valve Repaired & Pumps Vented

ML17339A351
Person / Time
Site:	Turkey Point
Issue date:	10/25/1979
From:	Schoppman M FLORIDA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML17339A350	List: 05000251/LER-1979-011, Forwards Updated LER 79-011/03X-1 05000251/LER-1979-011-03, Charging Sys Performance Noted to Be Degraded During Routine Startup Operation.Caused by Ruptured Diaphragm & Damaged O-ring on Valve.Valve Repaired & Pumps Vented
References
LER-79-011-03X, LER-79-11-3X, NUDOCS 7912030149
Download: ML17339A351 (1)

LER-1979-011, Charging Sys Performance Noted to Be Degraded During Routine Startup Operation.Caused by Ruptured Diaphragm & Damaged O-ring on Valve.Valve Repaired & Pumps Vented

Event date:
Report date:
2511979011R03 - NRC Website

text

NRC FORM 366 P 77l LICENSEE EVENT REPORT U. S. NUCLEAR REGULATORY COMMISSION I

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Durin o eration ursuant to TS 3.6.d the cause of the roblem was determined to be air inleakage inte the charging pump suction 5

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The um s were alternately vented. and the cause of the air 6

inleaka e was corrected.

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The root cause of the air inleakage was a ruptured, diaphram in conjunction with a damaged. "0"-ring on valve FCV-II-113B.

This valve is in the flow path between the boric acid. blender and the charging pump suction header.

The valve was re aired. and. the pumps were vented..

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