ML20064D613

/03L-0 on 781025:Analysis of Instru Installations Revealed That Two Transmitters Assoc W/Channel a Steam Generator Low Water Lever Were non-seismically Mounted. Channel a SG Was Bypassed.Seismic Brackets Will Be Used

ML20064D613
Person / Time
Site:	Millstone
Issue date:	11/03/1978
From:	Crockett J NORTHEAST UTILITIES
To:
Shared Package
ML20064D609	List: ML20064D606 ML20064D613
References
LER-78-026-03L-01, LER-78-26-3L-1, NUDOCS 7811080161
Download: ML20064D613 (1)

Text

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J 3 EVENT oCs0RIPT!ON AND PnoeAOLE CotesEoVENdEs h IOI2l l Correspondence with Combustion Engineerino indicated the cotantial fnr tha vica nf I pT31 Inon-seismic mounting brackets for certain safety-related oressure transmitters at I io ;4 j lanother power plant. Our analysis of instrumentation installations revealed that two I lo 151 Lransmitters t associated with Channel A steam generator low water level were non-seismicM1; o e imounted. This would result in the potential for inoperabilijy of Channel A low SG l g o j ,l [1evel and result in operation in action statement 2, Technical Specification Table 3.3-1L I

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l36 Zjg l0 l0 l0 'ID'l ldiN l@ l42N l@ lN l@ lF 44 l1 18 l0 47lQ 34 3# 40 43 CAU';E oESCRIPTioN AND CoRTIECTIVE ACTIONS h l, i e i lUpon determination of the transmitter brackets non-seismic nature, the Channel A SG I g , i, i il ow level was bypassed, resulting in operation in 2/3 trip looic. Seismic brackets I

, , pill be installed at the next plant shutdown. Transmitter data: Foxboro Model E-13 DM. I

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