ML19289G227

LER 79-055/03L-0 on 790719:main Feedwater Controller B Malfunctioned.Caused by Water in Steam Supply Line.Water Blown from Steam Line & Tested Successfully

ML19289G227
Person / Time
Site:	Arkansas Nuclear
Issue date:	08/02/1979
From:	Shively C ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19289G224	List: ML19289G223 ML19289G225 ML19289G226 ML19289G227 ML19289G228 ML19289G229
References
LER-79-055-03L, LER-79-55-3L, NUDOCS 7908070592
Download: ML19289G227 (1)

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NRC FORM 366 (7 77) U. S. NUCLE AR REGUL ATORY COMMISSION LICENSEE EVENT REPORT EXHLBIT A CONTROL BLOCK: l 6

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6 h (PLEASE PRINT OR TYPE ALL REQUtr.lO INFORMATIONI 8 iAlRlAl 7 8 9 Njdl 21@15l 0l0 l-l0 10l 0l Oj0l- l0l0 l gUCLNSE L8CENSEE CODE le UCENSE NvveEH 25 2G l1 tl1l1 vPE JO l1lgl l lg 57 CAT 5m CON *T i

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60 61 OOCKET NUMBER EVENT OATE 24 75 HEPOHTDATE to EVENT DESCRIPTION AND PROBADLE CONSEQUENCES h FETTl I During Mode 1 operation. the "B" Main Feedwater Controller malfunctioned, I F6Til I reouirine Emercency Feedwater. EFW pump steam turbine driver, 2K3, for 10lai tpump 2P7A tripped on overspeed upon receipt of EFAS sinna1, resulting in i n

5 I nn finw frnm ?P7A. Finw was established with the electric driven EFW I O s pump. 2P7R. There hwe been nn sinilar occurrences.

A This cecurrence is reportable per T.S. 6.9.1.9b. I O as l 7 8 9 Sv$1EM CAubt CAUSE 80 CCDE LCCE SUBCODE COvP vatvE LOMPONENT COut AUW %E 8

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CODE 101 31

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4f 43 44 4, CAUSE DESCRIPTION AND CORRECflVE ACTIONS h i O Investication revealed overspeed trip was due to water in the steam i i i i sunniv line. The water was blown from the steam line and 2P7A was i ii 121 I successfully started three times. Onerations has initiated a steam i 13131 1 line blowdown once per shift. Engineering is evaluating the steam I L, il *J 8 .

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i a NA 7 8 9 1010101@l 11 12 l LOSL OF OR DAMAGE YO,4CluTV Q TYPE pg DESCRIPTION  %./

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gg OE RtP TION g$$ NRC USE ONLY 2 O t.EJyen @l NA 1 llll1!Iiltifl N ,o,,ng,,ngn Chris N. Shively , g, 5di/968-2519 m

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