05000267/LER-1980-066-03, /03L-0:on Eleven Occasions During 801105-18,plant Operated W/Primary Coolant Oxidants Greater than 10 Ppm & Average Core Outlet Temp Greater than 1,200 F.Caused by Residual Moisture & Leakage Past HV-21352

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/03L-0:on Eleven Occasions During 801105-18,plant Operated W/Primary Coolant Oxidants Greater than 10 Ppm & Average Core Outlet Temp Greater than 1,200 F.Caused by Residual Moisture & Leakage Past HV-21352
ML19351E613
Person / Time
Site: Fort Saint Vrain Xcel Energy icon.png
Issue date: 12/05/1980
From: Gahm J
PUBLIC SERVICE CO. OF COLORADO
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19351E606 List:
References
LER-80-066-03L, LER-80-66-3L, NUDOCS 8012100521
Download: ML19351E613 (1)


LER-1980-066, /03L-0:on Eleven Occasions During 801105-18,plant Operated W/Primary Coolant Oxidants Greater than 10 Ppm & Average Core Outlet Temp Greater than 1,200 F.Caused by Residual Moisture & Leakage Past HV-21352
Event date:
Report date:
2671980066R03 - NRC Website

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NRC PCEM 366,

U. S. NUCLEAR REGULATO3Y COMMISSION -

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EVENT DESCRIPTION AND PROSA8LE CONSEQUENCES h Io I2i l During the period from November 5 through November 18, 1980, the plant was operated l

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, with total primary coolant oxidants (the sum of carbois monoxide, carbon dioxide, and ;

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,than 1200*F on eleven separate occasions. These events' constitute a degraded mode of j

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34 35 36 38 40 el 42 43 44 47 CAUSE OESCRIPTION AND CORRECTIVE ACTIONS 27 1 i 4 o l l Residual moisture from previous moisture ingress in October and leakage past' HV-21352 1 i,,, i l resulted in high primary coolant total oxidants. Valve is Velan Model P-33876-N/78R. I j

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