05000324/LER-1979-072-03, /03L-0:on 790812,during Normal Operation,Vessel Conductivity Exceeded 2 Micromhos for Approx 33-h Due to Leaks on Heat Exchanger B.Leaks Sealed W/Furmamite & Vessel Returned to Svc

/03L-0:on 790812,during Normal Operation,Vessel Conductivity Exceeded 2 Micromhos for Approx 33-h Due to Leaks on Heat Exchanger B.Leaks Sealed W/Furmamite & Vessel Returned to Svc

ML19208A349
Person / Time
Site:	Brunswick
Issue date:	09/11/1979
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19208A347	List: 05000324/LER-1979-072, Forwards LER 79-072/03L-0 05000324/LER-1979-072-03, /03L-0:on 790812,during Normal Operation,Vessel Conductivity Exceeded 2 Micromhos for Approx 33-h Due to Leaks on Heat Exchanger B.Leaks Sealed W/Furmamite & Vessel Returned to Svc
References
LER-79-072-03L, LER-79-72-3L, NUDOCS 7909130447
Download: ML19208A349 (2)

LER-1979-072, /03L-0:on 790812,during Normal Operation,Vessel Conductivity Exceeded 2 Micromhos for Approx 33-h Due to Leaks on Heat Exchanger B.Leaks Sealed W/Furmamite & Vessel Returned to Svc

Event date:
Report date:
3241979072R03 - NRC Website

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LICENS3E EVENT REPORT CONTROL BLOCK:

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7 8 9 LICENSEE CODE 14 15 LICENSE NUM8ER 25 26 LICENSE TYPE J0 57 CAT 58 CON'T lLl@l0l5l0 -l0l3l2l4 @l0l811l2l7l9 @l0 9l 1 lj 7l 9lg O

1 5 URCE 7

8 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIDTION AND PROBA8LE CONSEQUENCES h E l nuring normni plant coeration. vessel conductivity exceeded 2,n-hos for anoroximatelyi M l 11 hours1.273148e-4 days <br />0.00306 hours <br />1.818783e-5 weeks <br />4.1855e-6 months <br /> pnuer unn reduced to ifmit conductivity build up.

ITTTI Technical Specifications 3.4.4. 6.9.1.9b 1

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CAUSE

CAUSE COMP.

VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SU8 CODE L O_L9 ]

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to 11 12 13 18 19 20 SEQUE NTI AL OCCURRENCE REPORT REVISION LE R/RO EVENT YEAR REPORT NO.

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]g l N lg l A lg l P l 1l 6 l 0lg 33 34 3b 36 31 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS W l The reason for exceeding 2,nchos was the inoperability of the RWCU system.

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11 111 l leaks on the "B" RWCU heat exchanger, the system would isolate on the "Hi Room Temper 1 Iii2l l ature" or "Hi Hi Leak Differential" group isolation. The heat exchanger was sealed

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gl with Furmanite and returned to service, at which time conductivity slowly decreased i 4 l to 2 pmhos. Modifications will be performed on all RWCU heat exchangers (CON'T) l 7

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METHOO OF STATUS

% POWER OTHER STATUS v DISCOVERY DISCOVERY DESCRIPTION 32

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4 46 CO TENT 80 RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE h

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1 6 PERSONNEL EXPOS ES NUMBER 0 lhl TYPE @l NA l

DESCRIPTION

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NRC USE ONLY E LN_jhl NA 130 W7 g

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NAME OF PREPARER PHONE:

LER CONTINUATION - RO# 2-79-072 Facility:

BSEP Unit No. 2 Event Date:

8-12-79 (U/1 & U/2) during the next refueling outage to reduce or eliminate the problem of excessive leakage.

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