ML20062D718

/03L-0 on 781103:in Routine Surveillance test,11 Auxiliary Feed Pump Was Tripped Per Procedure & Oper Was Unable to Reset Throttle Valve Due to Binding.Assembly Was Freed Upon Lubrication of Stem & Nut

ML20062D718
Person / Time
Site:	Calvert Cliffs
Issue date:	11/24/1978
From:	Davis S, Romney K BALTIMORE GAS & ELECTRIC CO.
To:
Shared Package
ML20062D717	List: ML20062D711 ML20062D718
References
LER-78-052-03L, LER-78-52-3L, NUDOCS 7811290267
Download: ML20062D718 (1)

Text

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NRC h oRM 366 U. b. NUCLL AH HkUULA10HY CUMMlbbiUN 9 7 77)*

LICENSEE EVENT REPORT (PLE ASE PRINT OR TYPE ALL REQUIRED INFORMATION)

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7 8 9 LICENSEE CODE le 15 LICENSE NUM8ER 26 26 LICENSE TYPE Jo CON'T O i ,E "C; I Li@l 01 5101010131117 l@l 6911110 l 3 l 7 l 81@l 74 1l 11REPORT 75 a l bDATE l T l 880l@ -

7 8 60 61 DOCKET NUMBER 68 EVENT DATE EVENT DESCRi# TION AND PROBABLE CONSEQUENCES h O 2 l While performing a routine surveillance test,11 auxiliary feed pump was l tripped per the procedure. The operator was unable to reset the throttle l 3,

, ,  ; valve due to binding. The pump was declared inoperable at Oh30 per T.S. l g , ; 3.7.1.2. The valve operator was repaired and the pump returned to  ;

, , y service at 1130. LERs 76-16 (Unit 1) and 77 h5 (Unit 2) describe g similar events. g 9 , ,

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CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h l i l 0 l l The stem nut and stem of h" throttle trin valve vere frozen. Lubri cant I li j i l l vas applied to stem and nut and the operator was worked until the I

[ ] l assembly was free. A FCR has been initiated to provide lubrication I i 3 l for the nut. l 11 14 1 l I 7 8 9 80 5A  % POWER OTHER STATUS 15 0 RY DISCOVERY C ESCRIPTION

[TTT'l LE_j@ l0 l 917 l@,l N/A l W @l Operator Observation l ACTIVITY C TENT RELEAsEO OF RELEASE AMOUNT OF ACTIVITY LOCATION CP RE LEASE l1 16 l d h WQl N/A l l N/A l 7 8 9 10 11 44 45 80 PERSONNEt, EXPOSURES NUP.*8 E R TYPE DESCRIPTION -

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~Ue8 E R Lth.I I 01 01018lDEsCRi,riO~@ N /A l 7 8 9 11 12 80 Loss OF OR DavAGE TO FACILITY 43 l TYPE DESCRIPTION l M [Zj@l N/A l l 7 8 9 10 80

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NAMF OF PREPAHER PHONE:

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