ML20064H933

LER#78-087/03L-0 on 781221:vibration Readings Taken on River Water Pump #4 Exceeded Acceptable Limits.Work on Pump Bedplate,Adjustment of Impeller Lift & Pump/Motor Realignment Restored Vibration to W/In Acceptable Range

ML20064H933
Person / Time
Site:	Farley
Issue date:	12/21/1978
From:	Hairston W ALABAMA POWER CO.
To:
Shared Package
ML20064H912	List: ML20064H908 ML20064H919 ML20064H933
References
LER-78-087-03L, LER-78-87-3L, NUDOCS 7812270313
Download: ML20064H933 (1)

Text

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Io 121 l At 0400 on 11/23/78 vibration readines taken on river water ( R'M ni" n Nn_ &

Lo 11J La_pparently exceeded the acceptable limits. RW p umo No . 4 / RW Train- B wa s de el n ro d I l 10141 Linoperable at 0832 on 11/23/7a_nf ter tha < n4 s ai ramate<e "m., . 'v21"^ted ^nd I go,3, gverified. T/S 3.7.5 requires at least two independent RW loops be operable. RW l l 1O Is 1 1 pump No. 4/RW train B was restored to an operable status at 2120 on 11/23/78. I  :

lo j;j l T/S 3.7.5 action statement requirements were met. RW Train A vas operable. The l yo,3; [ health and safety of the general public were not affected. A similar occurrence so l

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el lY lh (Ajh IB 15 la lo lh 42 43 44 47 CAU55 CECCAIPTION AND CORRECTIVE ACIlONS l i 101 (Work on the pump bedplate. adiustment of inoeller li f t. nna men /mnent realinnment i 1: lij [ restored the vibration to within the acceptable ranne. 'Ihe lube /cooline ninim uns I i

, , i , , l flushed. The pump was restored to an operable status. Subsequent preventive maintenanhe L' I lbegun 12/12/78 revealed excessive bearing wear which may have contributed to the hieh l 4

[il41l vibration. A design change reques t has been initiated to evaluate fouline of the l so 1 3 alube/ cooling piping,

[TD-  % Pct.ER CTHER STATUS SO RY DISCOVERY OESCRiPTION l_:15l[gj h l1l010l@l NA I [Ajhl Eauipment Operator reported excessive l

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