ML17266A244

Updated LER 80-008/03L-1:on 800206,sample Valves for Tanks 1A1,1A2,1B1 & 1B2 Had Been Mislabeled.Caused by Drawing Error.Working Diagrams Revised & Piping & Labeling Corrected

ML17266A244
Person / Time
Site:	Saint Lucie
Issue date:	07/23/1980
From:	Pace P FLORIDA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML17208A914	List: ML17208A913 ML17266A244
References
LER-80-008-03L, LER-80-8-3L, NUDOCS 8008210474
Download: ML17266A244 (2)

Text

UPDATE REP"RT =- PREVIOUS REPORT DATED l1ARCH 7, 1980 NfIC POIIGI QGO u.s. IIucLzAR nzcuLATCAv COLIMlsslopl P Tl)

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'tanI:s-lAl, lh2, lEl, and, 182,had been mislabeled as 3,P2, 181,. lh2 and lhl- respectively. The result of this problem ffas that many of the S.T..T.

sanpling survei11ances required by Tncb.'pec.. 3/Tl.5.1. 6 durian Cila period 21 Oct. 1979 to 5 Feb; 1980 ffere actually missed due to sampling the ffronpg

'na and none of these samples f;ere beloTT the Tech. Spec. limit of 1720 ppm.

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LIJO OJS I'. IO 31 SS 16 c) 6'2 ~ 43 ~ u * ~ 41 CAUSc,OZSCTIIPTIOPI ."IO CORASA 'P IVE ACTIONS Q21 Investigation has shown that althou h the s stem is correctl installed per the v>orking drawings; both the piping and instr Umentation diagram and I I I I odd Ill I h I . Th>> I d have been revised and the sam 1 t i 1

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NASI oP PRSPATI R P. L. Pace (305) 552-3801 800833LIO CjC7~

REPORTABLE OCCURRENCE 335-80-8 (REV.1)

LICENSEE EVENT REPORT PAGE TWO ADDITIONAL CAUSE DESCRIPTION AND CORRECTIVE ACTIONS Thc S.I;T. Remote Sampling System was installed in Oct. 1979. The sample valve mislabelin'g problem went undetected until Feb. 1980 because the normal sample volume is too small to change S.I.T. level indication.

Since the S.I.T. samp1ing valves are within plant containment, the specific error was. not confirmed until the 'preserit refueling'utage.

proved that the system piping and valves were correctly 'nvestigation installed per the Hechanical Design Drawings and the system control wiring. was correctly installed in accordance -with the Electrical Design Drawings. However, the system designer had inadvertently transposed the mechanical-electrical interface (inside containment versus outside) resulting in a mirror-image mislabeling problem.

This error was an isolated design problem and the cognizant design review personnel have been made aware of the cause to prevent reoccurrance of similar errors. This is the first event involving surveillance errors due to this type of problem.