ML20062D801

/03L-0 on 781115:RWT Level Discovered to Be at 455 Inches.Caused by Rad-Chem Technician'S Failure to Fully Close Local Sample Valve After Drawing Routine Sample. Technician Has Been Reinstructed in Valve Sampling

ML20062D801
Person / Time
Site:	Calvert Cliffs
Issue date:	11/24/1978
From:	Davis S BALTIMORE GAS & ELECTRIC CO.
To:
Shared Package
ML20062D783	List: ML20062D775 ML20062D801
References
LER-78-041-03L-01, LER-78-41-3L-1, NUDOCS 7811300223
Download: ML20062D801 (1)

Text

NF 8ORM 344 U. S. NUCLE AR REGULATORY COMMISSION LICENSEE EVENT REPORT CONTROL 8 LOCK: l l l l l  !

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80 F 8 60 el DOCKETNUuSER ss 69 EVENT DATE 74 7S R EPORT DATE EVENT DESCHIPTION ANO PROB ABLE CONSEQUENCES h O 2 l At 222h Refueling Water Tank (RWT) level was discover-d to be at h55 l 0 l inches. It was determined that the RWT localsample valve was open and i O 4 l draining to the local sump. D e valve was closed and the tank filled 1 0 3 l to greater than h56 inches, (hoo,ooo gal) as required by T.S. I O e l 3.5.h.a at 2250. This is not a repetitive Occurrence. I O 7 l l I

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30 l---J 31 l32oJ T EN A O O PLANT MET MOURS 22 $8 I D FOR 8. SUPPL R MANUFAC RER l H l g g g ]35g 33 34 l36Z [g 3 l70 jo jo l 40 l g g { g 41 42 lZlg 43 lZl9l9l9lg 44 47 CAUSE OESCRIPTION AND CORRECTIVE ACTIONS h i O l he cause was determined to be the Rad-Chem technician's failure to I i t I fully close the local samole valve after dravina m rentina anwela. I M l Corrective action has been to verbally reinstruct the technician to l

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i a l ensure that sample valves are troverly shut after dravina samnies. l

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NAME OF PREPARER S. M. Davis PHONE:

(3o1) 23h_79h2

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