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)

Text

(7 77)LICENS3E EVENT REPORT

'CONTROL BLOCK:

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R [N!C!RlE!P!2lh!Ol0l-l0l0!0l0l0l-l0l0lhl4l1 1l1l1 hll@7 8 9 LICENSEE CODE 14 15 LICENSE NUM8ER 25 26 LICENSE TYPE J0 57 CAT 58 CON'TlLl@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 o s ll0 6ll10171 ll0 8ll7 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,@~REPQl7l9l ,jl 0l 7l 2l yl0l3ll Lll0l-u 21 22 23 24 26 27 28 29 30 31 32 T K N AC N P NT ME HOURS SB I FOR 8.SUPPLIE MANUF CTURER d@l Fl@l__B,J@l Z l@l 0l 0l 1l 8l

]gl N lgl A lgl 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.

Due tol11 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 4l to 2 pmhos. Modifications will be performed on all RWCU heat exchangers (CON'T)l'7 8 9 80 F ACILITY h METHOO OF STATUS% POWER OTHER STATUS v DISCOVERY DISCOVERY DESCRIPTION 32

@ W @ l0 9 l7 l@lNA llA l@l Operator Surveillance l7 8 AEnVITY'1 M 4 4 46 CO TENT 80 RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE h@lNAl NAl1 6 PERSONNEL EXPOS ES NUMBER 0 lhl TYPE @l NA

_lDESCRIPTION l Ol 0 Zl1 7 b~g 80 PERSONNE L INJURIES Q}t O' i NUMBER DESCRIPTION d;O.l 0l 0 0 lhl NA_i il1 a'7 8 9 11 12 rn)(y-'80 LOSS OF OR DAMAGE TO FACILITY 1 i O(, WPE DESCRIPTION g k u y@l NA O--JL dli 9 7 8 9 10 PUBLICITY ISSUED DESCRIPTION 45 7 NRC USE ONLY E LN_jhl NA 130 W7 , , , , , ,,,,,,, , g 7 8 9 10 68 69 80h on, A.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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