05000315/LER-1981-007-03, /03L-0:on 810318,loop 2 T-average & delta-T Indicated Low Temps.Caused by Resistance Temp Detector Producing Erroneous Temp Readings.Detector Replaced & Trip Setpoints Verified

/03L-0:on 810318,loop 2 T-average & delta-T Indicated Low Temps.Caused by Resistance Temp Detector Producing Erroneous Temp Readings.Detector Replaced & Trip Setpoints Verified

ML17326A862
Person / Time
Site:	Cook
Issue date:	04/10/1981
From:	Rischling J INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17326A863	List: 05000315/LER-1981-007, Forwards LER 81-007/03L-0 05000315/LER-1981-007-03, /03L-0:on 810318,loop 2 T-average & delta-T Indicated Low Temps.Caused by Resistance Temp Detector Producing Erroneous Temp Readings.Detector Replaced & Trip Setpoints Verified
References
LER-81-007-03L, LER-81-7-3L, NUDOCS 8104160400
Download: ML17326A862 (6)

LER-1981-007, /03L-0:on 810318,loop 2 T-average & delta-T Indicated Low Temps.Caused by Resistance Temp Detector Producing Erroneous Temp Readings.Detector Replaced & Trip Setpoints Verified

Event date:
Report date:
3151981007R03 - NRC Website

text

SUBJECT:

LER 81"007/03L;0!on 810318Ploop 2 T-average 3 de,lta T

indicated low temps, Caused by resistance temp detector.

producing err oneus temp readings'etector replaced lm trip setpoints verified.

DISTRIBUTION CODE:

AOO?S COPIES RECEIVED:LTR

(.

ENCL TITLE'. Incident Reports SIZE:..16 /

/

REOUIORY~INF)RMATION DISIR IBUTl SYSTEM (RIBS)

ACCESSION NBRo8104160400 DOC ~ DATE: 81/04/10 NOTARIZED:

NO DOCKET' FACIL':50 3i5 Donald C,

Cook Nuclear Power Plantr Unit ir Indiana 8

05000315 AUTH'AME AUTHOR AFFILIATION RISCHLINGiJ ~ L ~

Indiana 8 Michigan Electr ic Co.

RECIP ~ NAME RECIPIENT AFFILIATION Region 3i Chicagoi Office of the Director NOTES: IEE:3 copies all materials 05000315 RECIPIENT ID CODE/NAME, ACTION:

VARGAE8 ~

04 INTERNAL: A/0 COMPIrSTRU06 A/0 MATL 8 QU08 A/0 PLANT SYS10 A/0 SFTY ASSE12'EOD ASLBP/J ~ HARD CHEM ENG BR 16 CORE PEHF BR 18 DIR g HUM FAC S21 EFF TR SYS BR23 4EOSCIENCES 26 I8E>>

Og~

LIC GUID BR 'G MECH ENG BR 38, OP EX EVAL BR34 POKIER SYS BR 36 REACT SYS BR 40.

REL L RISK A 41 STHUCT ENG BR44 COPIES t.TTR ENCL 3

3 1

1 1

i 1

3 3

1 1

1 1

1 1

1 1

1 1

1 1

1 3

1 1

1 1

1 1

RECIPIENT ID CODE/NAME A/D ENV TECH 07 A/D OP REACT009 A/D RAD PROT 11 ACC EVAL BR 14 AEOD/DMu AUX SYS BR 15 CONT SYS BR 17 D IR ENG INEERI20 DIRg SYS INTEG22 EQUIP QUAL BRZ5 ILC SYS BR 29 JORDANr E ~ /IE MATL ENls BR 32 NRC PDR 02-OR ASSESS BR 85 RAn BR39 G FILE G 1 G EVA42 SYS INTERAC B45 COPIES LTTR ENCL 1

1 1

1 1

1 1

1 3

31 1

1 1

1 1i 1

1 1-1 1

1 1

1 1

1 1

1 1

1 1

1 1

1 1

EXTERNAL: ACRS NSIC 46 05 16 ib 1

1 LPDR 03 ggR 1V 1SSl TOTAL NUMBER OF COPIES REQUIRED'TTR ENCL

>

1 0

0 2e NA

~uO ~O

~APRI OPERATOR OBSERVATION 7

8 9

10 12 13 44 45 46 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITYQ36 LOCATIONOF RELEASE Q

~16

~Z Q33 Z

Q34 NA NA 7

8 9

10 11 44 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION Q3e RED LOOoo IOL~JO NA 7

8 9

11 12 13 PERSONNEL INJURIES 45 THE SPARE RTD WAS CONNECTED IN PLACE OF THE BAD RTD.

AFTER THE INSTRUMENTATION LOOP WAS CALIBRATED FOR THE NEW RTD, THE APPLICABLE SURVEILLANCE TEST WAS RUN TO VERIFY TRIP SETPOINTS AND THE SYSTEM WAS RETURNED TO SERVICE.

THE RTD THAT FAILED WAS MANUFACTURED BY H.

E.

SOSTMAN MODEL NO.

11901B.

80 80 80 80 7

8 7

8 O

7 8

NAME OF PREPARER J.

L. Rischling 9

11 12 LOSS OF OR DAMAGETO FACILITY 43 TYPE

DESCRIPTION

~ZO43 NA 9

10 PUBLICITY ISSUED DESCRIPTION~

uNQ4 NA 9

10 NRC USE ONLY 68 69 616-465-5901 PHONE 80 80 63 44a 80 a 0

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