ML17266A153

LER 80-008/03L-0:on 800206,discovered SIT Sample Valves for Tanks 1A1,1A2,1B1 & 1B2 Had Been Mislabeled as 1B2,1B1,1A2 & 1A1,respectively,resulting in Missed Surveillance Samplings. Caused by Incorrect Labeling During Installation

ML17266A153
Person / Time
Site:	Saint Lucie
Issue date:	03/07/1980
From:	Schoppman M FLORIDA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML17207A891	List: ML17207A890 ML17266A153
References
LER-80-008-03L, LER-80-8-3L, NUDOCS 8003170467
Download: ML17266A153 (3)

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~01 tanks lA1, lA2, 1 Bl, and 1 B2 had been mis label ed a 2 lA1 respectively. The result of this problem was that man of the S.X.T-sampling surveillances required by Tech. Spec. 3/4<<5.1.6 during the period rz 21 Oct- 1979 to 5 Feb. 1980 were actuall missed due to sam lin the w tank. However, during this period all four tanks were frequently sampled and none of these samples were below the Tech. Spec. limit of 1720 m.

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~C 44 22 CQUPCNENT UAIUPAC,UREA 42 labels were inadvertently transposed during instal1ation. This problem went undetected until now because the normal sample volume is too small to change S.I.T. level indication. The valve labels have been revised and the previous chemistry logs have been corrected to reflect the error.

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Reportable Occurrence 335-80-8 Licensee Event Report Page Two Additional Cause Descri tion and Corrective Actions Since the safety injection tank sampling valves are within the plant containment, the exact labeling/wiring error has not been confirmed to date. The wiring to the solenoid sampling valves for the safety injection tanks was apparently transposed during subcontractor installation. As a temporary measure, a brief containment entry was made and the sample lines were physically traced to identify which sample valve is associated with each of the four safety injection tanks. The valves were then labeled accordingly. An inspection will be made during the forthcoming refueling outage to confirm and close-out the correction of this discrepancy. This is the first event involving surveillance errors due to this particular problem.