05000348/LER-1979-019-03, /03L-1 on 790420:fluoride & Chloride Concentrations in RCS in Violation of Tech Spec Limits.Cause Not Determined.Rcs Integrity Not Impaired & Acceptable for Continued Operation

/03L-1 on 790420:fluoride & Chloride Concentrations in RCS in Violation of Tech Spec Limits.Cause Not Determined.Rcs Integrity Not Impaired & Acceptable for Continued Operation

ML19270G764
Person / Time
Site:	Farley
Issue date:	06/08/1979
From:	Hairston W ALABAMA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19270G763	List: 05000348/LER-1979-019, Forwards LER 79-019/03L-1 05000348/LER-1979-019-03, /03L-1 on 790420:fluoride & Chloride Concentrations in RCS in Violation of Tech Spec Limits.Cause Not Determined.Rcs Integrity Not Impaired & Acceptable for Continued Operation
References
LER-79-019-03L, LER-79-19-3L, NUDOCS 7906190242
Download: ML19270G764 (1)

LER-1979-019, /03L-1 on 790420:fluoride & Chloride Concentrations in RCS in Violation of Tech Spec Limits.Cause Not Determined.Rcs Integrity Not Impaired & Acceptable for Continued Operation

Event date:
Report date:
3481979019R03 - NRC Website

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60 ta l DOC.ETNUVJEH ud 63 EVENT DAf t 74 73 BEPOitT DAT E 60 EVE *.T DESCRirTION AND PRCBASLE CONSECUENCES h o i2 l At 1630 on 4/20/79 chemical analysis of the reactor coolant revealed chloride and

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l fluoride concentrations of 3.35 FPM and.88 PPM respectively. Tech. Spec. section l

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3.4.7 and Table 3.4-1 requires RCS C1 and F1 concentrations to be $ 0.15 PPM (steady l o

a 1 o is ; state) and < 1.50 PPM (transient). The C1 and F1 concentrations (.15 PPM and.12 PPM)l l had returned within steady state limits by 0400'on 4/22/79 and 2020 on 4/21/79.

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o t 7 ! l C1 concentration (1.47 PPM) had returned within transient limits by 0315 on 4/21/79.

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l An investigation failed to determine the source for the increased fluoride and chloridb l concentrations.

As required by Tech. Spec. action statement 3.4.7.c, an encineerina I i

l evaluation of this condition with regard to structural integrity of the RCS has been l i

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The engineering evaluation determined that the structural integrity of l

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