ML19340B255

LER 80-027/03L-0:on 800919,steam Flow Transmitter 2FT-474 Found Reading Low.Caused by Zero Adjustment Shift in Barton Model 384 Differential Pressure Transmitter. Transmitter Recalibr.Transmitters Scheduled to Be Replaced

ML19340B255
Person / Time
Site:	Prairie Island
Issue date:	10/17/1980
From:	Hunstad A NORTHERN STATES POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML19340B242	List: ML19340B241 ML19340B255
References
LER-80-027-03L-01, LER-80-27-3L-1, NUDOCS 8010210705
Download: ML19340B255 (1)

Text

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(PLE ASE PRINT OR TYPE ALL REOUIRED INFORMATION)

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7 8 68 69 EVENT DATE EVENT DESCRIPTION AND PROBABLE CSNSEQUENCES h 1012 l l During normal operation, steam flow transmitter 2FT-474 was observed to be l lTT'n I reading low. At recalibration it was determined that the MSIV closure signal l lO64l l and reactor trip signal from this channel would have occurred as much as 1.15% l l0 isi l above the Tech Spec limits. Tech Spec Table 3.5-1 and -2 apply. Recent similar l l0 is l l event was R0-80-08. Appropriate bistables were placed in trip. No effect on l

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41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h gI Zero adjustment shift in Barton Model 384 differential pressure transmitter. I gl These transmitters are scheduled to be replaced at the next refueling outage for i 1

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LOCATION OF RELEASE W l 8Z9 l @D OF RELEASE l Zl@l NA l. l NA l 7 10 11 44 45 80 PERSOENEL EXPOSURES NUMBER TYPE DESCRIPTION i 7 l 010 l0 l@l Z l@l NA l PERSONNE L INJU IES NUMBER DESCRIPTION -

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