ML19208A349

LER 79-072/03L-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

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: ML19208A346 ML19208A349
References
LER-79-072-03L, LER-79-72-3L, NUDOCS 7909130447
Download: ML19208A349 (2)

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LICENS3E EVENT REPORT

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CONTROL BLOCK: l l l l l (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

R [N!C!RlE!P!2lh!Ol0l-l0l0!0l0l0l-l0l0lhl4l1 1l1l1 hl 7 8 9 LICENSEE CODE 14 15 LICENSE NUM8ER 25 26 LICENSE TYPE J0 l

57 CAT 58

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5 URCE lLl@l0l5l0 -l0l3l2l4 @l0l811l2l7l9 @l0 9l 1 lj 7l 9lg 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 o s l l 0 6 l l 10171 l l 0 8 l l 7 8 9 80 SYSTEM CAUSE CAUSE COMP. VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SU8 CODE L O_L9 ] l c I c l@ [_E_jh l X lh l H l T ElX C H lh W@ y h 7 8 9 to 11 12 13 18 19 20 SEQUE NTI AL OCCURRENCE REPORT REVISION LE R/RO EVENT YEAR REPORT NO. CODE TvoE N O,

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l0l 28 29 30 31 32 T K N AC N P NT ME HOURS SB I FOR 8. SUPPLIE MANUF CTURER d@l Fl@

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]g 41 l42 N lg l A lg l P l 1l 6 l 0lg 40 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS W l The reason for exceeding 2,nchos was the inoperability of the RWCU system. Due to l 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 [

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 8 9 '

80 F ACILITY STATUS  % POWER OTHER STATUS v h METHOO OF DISCOVERY DISCOVERY DESCRIPTION 32

@ W @ l0' 7 8 9 l7 l@lNA 1 M 4 l lA l@l Operator Surveillance 4 46 l

AEnVITY CO TENT 80 RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE 1 6 h @lNA l NA l PERSONNEL EXPOS ES NUMBER DESCRIPTION 1 7 l Ol 0 0 lhl TYPE Zl @l NA _

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PERSONNE L INJURIES b g 80 NUMBER 1 a l 0l 0 0 lhl NA DESCRIPTION d; O Q}t

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) 80 LOSS OF OR DAMAGE TO FACILITY , 1 i WPE DESCRIPTION O( g k u i 9 y@l NA O - - JL d l 7 8 9 10 PUBLICITY NRC USE ONLY ISSUED DESCRIPTION 45 7 E LN_jhl NA 130 W7

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, , , , ,,,,,,, , g 7 8 9 10 68 69 80h NAME OF PREPARER

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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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