ML20084U243

LER ER-77-011:on 770130,secondary Water Chemistry Limits for Sodium Concentration,Ph & Conductivity Exceeded Tech Spec 3.18 Due to Leak in Main Condenser West Half.Cause Suspected to Be Tube Vibration.Tubes Plugged

ML20084U243
Person / Time
Site:	Palisades
Issue date:	04/04/1977
From:	CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
LER-ER-77-011, LER-ER-77-11, NUDOCS 8306280259
Download: ML20084U243 (1)

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7 8 57 S8 59 SO 81 88 89 74 75 80 EVENT DESCRIPTION 36 l Due to a leak in the vest half of the main condenser, secondary water chemistry limits l 7 8g 30

, gg l for sodium concentration, pH, and conductivity per Technical Specification 3.18 vere l 7 89 SO gg l exceeded for approximately 32.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br />. Power was reduced to approximately 50% and the l 7 89 80 11C l condenser repaired. All chemistry conditions were back to specification limits withinl 7 89 80 DG l the allowable 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />. I 7 89 mwE (ER-77-11) 80 "coE SEo*E coupoNENT CODE WEEAftoN gg l Hl Bl W 7 89 10 11 12 l Hl Tl El Xl C l HI 17 W 43 l Cl hl9 l0 l 44 47 W48 CAUSE DESCRIPTION g l A leak in the vest half of the main condenser was identified and plugged. Five addi- l 7 8g 80 gg l tional tubes were plugged. Suspected cause of tube failure was tube vibratior l 7 89 80 ri[0] l l k = , ,owEn oTNE status "oEES# o coviar o sc=oN 1

7 8 9 W l0l5l0l l REDUCED POWER 10 12 13 l

44 W45 l

48 NA 80 l

L OF SE AMOUNT OF ACTMTV LOCATION OF RELEASE BE lz J l NA l l NA l Lz_J 7 8 9 10 11 44 45 80 PERSONNEL EXPOSURES NUMeER TYPE DESCAPTCN DE l01010l tz j l NA go l

7 89 11 12 13 PERSONNEL INJUAIES NuueER DESCRWTON BG 1010l 01 i NA l 7 89 11 12 80 PROBABLE CONSEQUENCES ,

31 7 89 NA 80 l

LOSS OR DAMAGE TO FACtLITY TYPE DESCapTON 7 89 10 30 PUBUC!TY nE l NA l 7 89 80 ADDITIONAL FACTORS 4

( 3l 89 NA 80 l

DE I l 7 89 80 8306280259 770404 PDR ADOCK 0500025 i, S

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