ML19270G764

LER 79-019/03L-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

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: ML19270G762 ML19270G764
References
LER-79-019-03L, LER-79-19-3L, NUDOCS 7906190242
Download: ML19270G764 (1)

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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 [

c, , 3 ; l fluoride concentrations of 3.35 FPM and .88 PPM respectively. Tech. Spec. section l

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o a 1 3.4.7 and Table 3.4-1 requires RCS C1 and F1 concentrations to be $ 0.15 PPM (steady l o is ; state) and < 1.50 PPM (transient). The C1 and F1 concentrations (.15 PPM and .12 PPM)l

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o c l had returned within steady state limits by 0400'on 4/22/79 and 2020 on 4/21/79. The [

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

o g  ; F1 never exceeded transient Ilmits during this event. The health and safety of the [

a s public were not attected. sa 7

S Y S T E *.! CAUSE CAUSE COMP. VALVE CCOE CODE SU3 CODE COMPONENT CODE SUSCODE SUSCCOE 7

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i O l An investigation failed to determine the source for the increased fluoride and chloridb i l concentrations. As required by Tech. Spec. action statement 3.4.7.c, an encineerina I i 7 l evaluation of this condition with regard to structural integrity of the RCS has been l

,;3 l pe r fo rd.ed. The engineering evaluation determined that the structural integrity of l

[t t- I the RCS hr.s not been impaired and that the RCS is acceptable for continued operation. I 7 8 9 80

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