05000336/LER-1980-015-03, /03L-0:on 800321,following Reactor Trip,Condensate Storage Tank Level Was Below Tech Spec Requirements.Caused by Gland Seal Header Relief Valve Being Stuck Open, Necessitating Use of Auxiliary Feedwater Sys

/03L-0:on 800321,following Reactor Trip,Condensate Storage Tank Level Was Below Tech Spec Requirements.Caused by Gland Seal Header Relief Valve Being Stuck Open, Necessitating Use of Auxiliary Feedwater Sys

ML19309E590
Person / Time
Site:	Millstone
Issue date:	04/18/1980
From:	Stratman R NORTHEAST NUCLEAR ENERGY CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19309E581	List: 05000336/LER-1980-015, Forwards LER 80-015/03L-0 05000336/LER-1980-015-03, /03L-0:on 800321,following Reactor Trip,Condensate Storage Tank Level Was Below Tech Spec Requirements.Caused by Gland Seal Header Relief Valve Being Stuck Open, Necessitating Use of Auxiliary Feedwater Sys
References
LER-80-015-03L, LER-80-15-3L, NUDOCS 8004220679
Download: ML19309E590 (1)

LER-1980-015, /03L-0:on 800321,following Reactor Trip,Condensate Storage Tank Level Was Below Tech Spec Requirements.Caused by Gland Seal Header Relief Valve Being Stuck Open, Necessitating Use of Auxiliary Feedwater Sys

Event date:
Report date:
3361980015R03 - NRC Website

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EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h IFo11owing a reactor trip, the Condensate Storage Tank Level was below the level rcquir-l O 2 led by Specification 3.7.1.3 for a period of less than 4.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br />.

Following the reactor I 0 2 Ltrip the Gland Seal Header relief valve stuck openwhich required that main condenser i

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im isi Ivacuum be broken and the Auxiliary Feedwater System utilized. This caused the low levell ;

l Condition in the Condensate Storage Tank. There are no probable consequences because thel

O 6 l unit was operated in accordance with Technical Specification 3.7.1.3.

Similar events - I O 7 f5Tii1 ILER 77-26 dated 3/28/77, LER 79-40 dated 12/4/79 and LER 80-07 dated ~3/27/80.

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33 34 35 36 31 40 41 43 43 44 4y CAUSE DESCRIPTION ANDCoRRECTIVE ACTIONS h l The Gland Seal Header relief valve stuck open following a reactor trip which required i i O E l that Main Condenser Vacuum be broken. This necessitated the use of the Auxiliary Feed-l h I water System which caused the Condensate Storage Tank level to decrease below th'e limiti l allosed by the Technical Specifications. At this time the operability of the backup i

i 3 gi fire water system was verified and the tank level restored.

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