05000267/LER-1981-049-03, /03L-0:during 810802-07,increase Occurred in Offgassing from Core & Core Outlet Temps.Caused by Increased Primary Coolant Moisture & Oxidants from Refueling Shutdown

/03L-0:during 810802-07,increase Occurred in Offgassing from Core & Core Outlet Temps.Caused by Increased Primary Coolant Moisture & Oxidants from Refueling Shutdown

ML20010H930
Person / Time
Site:	Fort Saint Vrain
Issue date:	09/01/1981
From:	Mcbride L PUBLIC SERVICE CO. OF COLORADO
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML20010H926	List: 05000267/LER-1981-049, Forwards LER 81-049/03L-0.Detailed Event Analysis Encl 05000267/LER-1981-049-03, /03L-0:during 810802-07,increase Occurred in Offgassing from Core & Core Outlet Temps.Caused by Increased Primary Coolant Moisture & Oxidants from Refueling Shutdown
References
LER-81-049-03L, LER-81-49-3L, NUDOCS 8109290423
Download: ML20010H930 (1)

LER-1981-049, /03L-0:during 810802-07,increase Occurred in Offgassing from Core & Core Outlet Temps.Caused by Increased Primary Coolant Moisture & Oxidants from Refueling Shutdown

Event date:
Report date:
2671981049R03 - NRC Website

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NRC FORM X4 U. S. NUCLE AD I EGULATCY COMMISSION (7 77)

L!0ENSEE EVENT REPORT

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8 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 PEPORT DATE 80 EVENT DESCRIPTION AND PROB ABLE CONSEQUENCE.S h t o 121 l Durint the oeriod from August 2.1981, to Augus t 7.1981. the plant was operated in I

g l a degraded mode cf L,CO 4.2.10 on three occasions.

These events are reportable per l

l o 141 l Fort St. Vrain Technical Specification AC 7.5.2(b)2. No accocipanying occurrence. No l [ois) i effect on public health or safety. Similar repot3s 'to 81-009,81-015, 81-020, and l

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4G 41 42 47 44 47 CAUSE OESCRIPTION AND CORRECTIVE ACTIONS h l i t o l l The increascd primary coolant moisture and orf.dants from the refueling shutdown per-l gl iod resulted in increased off-gassing from the core when the. plant returned to power i and core outlet temperatures weru elevate d.

The primary coolant purification system I ggl i,,3 g l was util2 zed to restore primary coolant uxidant levels to acceptable limits.

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