05000315/LER-1982-028

LER 82-028/03L-0:on 820429,during Power Ascension Loop,One Wide Range RCS Pressure indication,NPS-122,failed High. Replacement Read Low on 820523.Caused by Open Stain Gauge & Faulty Calibr,Respectively

ML20053E341
Person / Time
Site:	Cook
Issue date:	05/27/1982
From:	Palmer R INDIANA MICHIGAN POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20053E330	List: 05000315/LER-1982-028 05000315/LER-1982-029 ML20053E329
References
LER-82-028-03L, LER-82-28-3L, NUDOCS 8206070810
Download: ML20053E341 (1)

LER-2082-028,

Event date:
Report date:
3152082028R00 - NRC Website

text

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EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h

l o 121 ITWO EVENTS OCCURRED ASSOCIATED WITH LOOP ONE WIDE RANGE REACTOR COOLANT SYSTEM

.Io13I IINDICATION (NPS-122). THE FIRST EVENT OCCURRED ON 4-29-82, DURING POWER ASCENSION, I Ioi41IWHEN NPS-122 FAILED. THIS RESULTED IN THE TRANSMITTER BEING REPLACED. THE SECOND l I o I s I lEVENT OCCURRED ON 5-23-82, DURING STEADY STATE OPERATION, WHEN NPS-122 INDICATION WAS I l

I O le 1 IF0VND TO BE READING LOW. THESE EVENTS WERE NON-CONSERVATIVE IN RESPECT TO TECHNICA i O l 7 l l SPECIFICATION 3.3.3.8, TABLE 3.3.11, ITEM 4. I l

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,_21 22 23 24 26 27 28 29 30 31 32 HOURS S a IT O PORtb 6. SUPPLIE MAN FACTURER KEN AC ON ON PLANT MET Lc._J@lzl@

33 34 l35z l@ lzl@ l01010101 36 31 40 t.N_j @

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42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h I

l i 101 ITHE CAUSE OF NPS-122 FAILING HIGH ON 4-29-82 WAS DUE TO AN OPEN STRAIN GUAGE. THE Iilii lTRANSMITTER. MANUFACTURED BY ITT BARTON MODEL 763, WAS REPLACED AND RETURNED TO SERVICEI l

ii12i l0N 5-3-82, THE NEW TRANSMITTER WAS'F0UND TO HAVE A LOW OUTPUT. THE CALIBRATION WAS 1iI311 CHECKED WITH A 5.4% SHIFT NOTED OVER THE ENTIRE RANGE. THE TRANSMITTE iED AND OBSERVED FOR SEVERAL DAYS WITH NO FURTHER SHIFTS NOTED. J Ii ia i

's'T'AWS sPOwER OTwER STATUS @ EiSEONRv' ' DISCOVERY DESCRiPriON @

OPERATOR OBSERVATION l l i I 5 I (_C_J@ l 0l 8 l Ol@l NA l lAl@l ACTIVITY CO TENT AMOUNT OF ACTIVITY LOCATION OP RELEASE aELE ASED OP Rete ASE NA l l NA l I i 16 l [ z_] @ l Zl@l PER$QNNEL EXPOS ES NUMBER TYPE DESCRIPTION NA l l i t il 101010 l@[_z_J@l PERSONNE L INJURIES NUMBER DESCRIP flON NA l li 141 l 0 l 0 l 0 I@l LOSS OF OR O AG To F ACILI TV NA l I i l o l LZ_l@l10 80 3 8 9 ESCRIPTION 2 a ISSUED LN_j @l NA l llIllIIIIlIII5

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