05000255/LER-1979-029-03, /03L-0 on 790628:conductivity & Sodium Concentrations in a Steam Generator Increased in Excess of Tech Spec Limits.Caused by Leakage in Condenser Tube & Chemical Hideout Return as Result of Power Reduction

/03L-0 on 790628:conductivity & Sodium Concentrations in a Steam Generator Increased in Excess of Tech Spec Limits.Caused by Leakage in Condenser Tube & Chemical Hideout Return as Result of Power Reduction

ML18043A878
Person / Time
Site:	Palisades
Issue date:	07/26/1979
From:	CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML18043A876	List: 05000255/LER-1979-029, Forwards LER 79-029/03L-0 05000255/LER-1979-029-03, /03L-0 on 790628:conductivity & Sodium Concentrations in a Steam Generator Increased in Excess of Tech Spec Limits.Caused by Leakage in Condenser Tube & Chemical Hideout Return as Result of Power Reduction
References
LER-79-029-03L, LER-79-29-3L, NUDOCS 7908010508
Download: ML18043A878 (1)

LER-1979-029, /03L-0 on 790628:conductivity & Sodium Concentrations in a Steam Generator Increased in Excess of Tech Spec Limits.Caused by Leakage in Condenser Tube & Chemical Hideout Return as Result of Power Reduction

Event date:
Report date:
2551979029R03 - NRC Website

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PALISADES NRC FORM 366 (7-77)

U.S. NUCLEAR REGULATORY COMMISSION LICENSEE EVENT REPORT CONTROL BLOCK: I I 0 (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 6

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8 I Mfr IP I Al LI l IG)I o I 01 o I o I 01 o I 01 o Io I 01o101 4111 ll l I l IG)I I I© 9

LICENSEE CODE 14

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~~~~~ L!:JG)I 01 51 o I 01 o I 21 515 101 o I 61 218 I 71 21@1o1.7 I 2 I 61 71 9 I© 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES @

I Following a power reduction in preparation for repairs of main condenser tube leaks, the conductivity and sodium concentrations in the A steam generator increased to 26.5 micro-mho/cm and 1.28 ppm respectively.

(B S/G conductivity - 25.0; sodium - 0.84.)

This was in excess of the limits of TS 3.18.1 Chemistry was returned to within s:vecifications (I]2J I within the time limits of TS 3.18.3 and 3.18.5.

No threat to public [II)) I health or safety existed.

Occurrence simi*J ar to LEE 79-02 8 and 79.;..027 I

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43 44 47 ITITI I The out of SI?ecifi catj on condition resnl ted-_ "from a of

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condenser tube inleakage and chemical hideout return as a result of the power reduction.

The condition was corrected through S/G blowdown and plugging of leaking main condens.er tubes.

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STATUS

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