05000325/LER-1980-055-03, /03L-0:on 800812,during Startup Preparations, Reactor Vessel Conductivity Measured Excessively High.Caused by Organics Breakdown in Reactor Vessel.Series of Condensate Makeup & Reject Operations Performed Using Charcoal Filt

/03L-0:on 800812,during Startup Preparations, Reactor Vessel Conductivity Measured Excessively High.Caused by Organics Breakdown in Reactor Vessel.Series of Condensate Makeup & Reject Operations Performed Using Charcoal Filters

ML19344F074
Person / Time
Site:	Brunswick
Issue date:	09/04/1980
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19344F070	List: 05000325/LER-1980-055, Forwards LER 80-055/03L-0 05000325/LER-1980-055-03, /03L-0:on 800812,during Startup Preparations, Reactor Vessel Conductivity Measured Excessively High.Caused by Organics Breakdown in Reactor Vessel.Series of Condensate Makeup & Reject Operations Performed Using Charcoal Filt
References
LER-80-055-03L, LER-80-55-3L, NUDOCS 8009120371
Download: ML19344F074 (1)

LER-1980-055, /03L-0:on 800812,during Startup Preparations, Reactor Vessel Conductivity Measured Excessively High.Caused by Organics Breakdown in Reactor Vessel.Series of Condensate Makeup & Reject Operations Performed Using Charcoal Filters

Event date:
Report date:
3251980055R03 - NRC Website

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NRC FORM 366 LICENSEE EVENT REPORT-CONTROL BLOCK: l l

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8 60 68 OOCKET NUMBER 68 G3 E% ENT DATE 74 75 REPORT D ATE 80 EVENT DESCRIPTION AND PROBASLE CONSEQUENCES h g l During preparations for start-up following a unit refueling outage, reactor vessel l

2 Vessel conductivity limits were exceeded l g l conductivity was measured at 10.7 pmho/cm.

10 j 4 j l again on August 14 (11.76 pmhos) and 15th (11.35 pmhos) 1980. This event did not l

1OIs] l effect the health or safety of the public.

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1017] l Technical Specifications 3.4.4, 6.9.1.9b l

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J3 34 35 36 31 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS 27 l t I o l l The high vessel conductivity was caused by a breakdown of organics in the reactor l

g l vessel. The conductivity was reduced to within specified limits by a series of I

l condensate makeup and reject operations to the vessel through charcoal filters in I

[ii7i g l order to lower the organic concentration. An investigation is in progress to deter-l I

lil4l l mine the source of the organics in the reactor vessel.

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