ML20009G017

LER 81-092/03L-0:on 810530,auxiliary Feedwater Flow Rate Instrumentation Pegged High.Caused by Failed Transmitters. Transmitters Replaced & Calibr.Power Supply Removed & Will Be Replaced

ML20009G017
Person / Time
Site:	McGuire
Issue date:	06/25/1981
From:	Nardoci P DUKE POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20009G016	List: ML20009G015 ML20009G017
References
LER-81-092-03L, LER-81-92-3L, NUDOCS 8108030245
Download: ML20009G017 (1)

Text

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en 13 I 6 I 9es @l0 oocut.f nuusan se l 5131 Ol 8 l 1 @l:s 01 mercar EvemT Cart 74 61215 O AT E l8 l140l@ EVENT oESCRIPT1oN ANo PRoSASLE CoNSECUENCES O'o , I o 12 I I On May 30, 1981 at 2000 hours, Unit I was entering Mode 3 from Mode 4.' The , AI S/G "D" Auxiliary Feedwater. Flow Rate Instrumentation was pegged-high, hence,, AI the instrument was declared inoperable.per Technical Specification.3.3.3.6 I ITTTl I which is reportable per Technical Specification 6.9.1.13(b). The inoper-  ; lo is t I ability of these instruments would not affect the auxiliary feedwater sys , L a_j r j l tem in providing and maintin.ng its.necessary functions. Therefore, the  ; health and safety of .the public were not affected by. this . incident.  ; e .I 7 8 nm. CAun cAv., a Co06 cCoE susCODE CDuroMEMr cQDE sua chg O's s 1oisl IIlDl@ lEl@

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cAuSE oEsemirmeN ANo connEenvE Ac ious @ LL.L_J l The S/G "D" Auxiliary Feedwater Flow Monitoring Instrumentation.became in- , EI coerable due to failed transmitters. One transmitter (Rosemount, Model , LL.Lij l 1151) was sending a faulty 74 milliamp signal; and another transmitter , Ii12i I (Barton 386A) had burned resistors due to its power supply. Both transmitter;s mI were replaced and calibrated, and the power. supply was removed.and will be , 2 *

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