ML20041A621

LER 82-001/03L-0:on 820106,core Flood Tank B Was Discovered W/Level Below Tech Spec Requirements.Caused by Loss of Water in Ref Legs of Level Transmitters.Legs Filled. Transmitters to Be Replaced

ML20041A621
Person / Time
Site:	Crystal River
Issue date:	02/02/1982
From:	Charles Brown FLORIDA POWER CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20041A615	List: ML20041A614 ML20041A621
References
LER-82-001-03L, LER-82-1-3L, NUDOCS 8202220345
Download: ML20041A621 (2)

Text

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EVEr.T GESCRIPTION At*D FROBABLE CO*JSEQUENCES h l 0 l 2 l l At 0230 during normal operation, it was discovered that Core Flood Tank "B" was inoperabl4 3

due to low level. The tank level indication decreased from 7983 gallons to 7500 gallons l after filling the referen,ce legs of the level transmitters for CFT "B". This created an g g , y event contrary to T.S. 3.5.1. Redundancy was provided by Core Flood Tank "A". Opera- y

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bility was restored at 0535 on January 6, 1982. There was no effect upon the health or y safety of the general public. This is the first occurrence for CFT "B" and this is g the fifth report under this Specification.

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CAUSE CESCRIPTIO!! AND CCRRECTIVE ACTIONS h l 110 l l The cause of this event is attributed to a loss of water in the reference legs of the l li ;i l l level transmitters. The reference legs were filled and the level transmitters were i

,,,,,y calibrated. Core Flood Tank "B" level was increased to required level. REI 81-5-43 l has been initiated to replace the core flood tank level transmitters, g g3gg l

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, SUPPLEMENTARY INFORMATION' i.

Report No.: 50-302/82-001/03L-0 t

Facility: Crystal River Unit 3 i

Report Date: February 2,1982 Occurrence Date: January-6, 1982 Identification of Occurrence:

Core Flood Tank "B" inoperable. contrary to Technical Speci-fication 3.5.1.

Conditions Prior to Occurrence:

f Mode 1 power operations'(100%).

Description of Occurrence:

At 0230 during normal operation,-it was discovered that Core Flood Tank "B" was. inoperable due to low level. Core 4

Flood Tank "B" level decreased from 7980 gallons to 7500 gallons after filling the reference legs of the level trans--

I mitters for Core Flood Tank "B". The level transmitters were calibrated and Core Flood Tank "B" was restored to operability at 0535 on January 6, 1982.

Designation of Apparent Cause:

The cause of this event-is attributed to a loss of water in the reference legs of the level transmitters for Core Flood Tank "B".

4 Analysis of Occurrence:

'.' There was no effect upon the health or safety of the general public.

Corrective Action:

The level transmitters were calibrated and Core Flood Tank "B" j level was increased to required level. REI 81-5-43 has been initiated to replace the Core Flood Tank level transmitters.

Failure Data:

This is the first occurrence for Core Flood Tank "B" and this is the fifth report under this Specification.

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