05000255/LER-1980-028, Forwards LER 80-028/03L-0

Forwards LER 80-028/03L-0

ML18045A576
Person / Time
Site:	Palisades
Issue date:	09/02/1980
From:	Hoffman D CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML18045A577	List: 05000255/LER-1980-028, Forwards LER 80-028/03L-0 05000255/LER-1980-028-03, /03L-0:on 800807,during Normal Power Operations, Low Level Alarm Received from Switch on SI Tank a (T 82 A). Apparently Caused by Slow Leakage from Tank.Inaccuracy of Analog Channel Attributed to Liquid Loss in Ref Leg
References
NUDOCS 8009080418
Download: ML18045A576 (2)

LER-1980-028, Forwards LER 80-028/03L-0

Event date:
Report date:
2551980028R00 - NRC Website

text

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[¥JrID~~w ttiUTITI~@JmJW General Offices: 212 West Michigan Avenue,.Jackson, Michigan 49201

• Area Code 517 788-0550 September 2, 1980 Mr James G Keppler Office of Inspection and Enforcement Region III U S Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 DOCKET 50-255 - LICENSE DPR PALISADES PLANT - LICENSEE EVENT REPORT 80-028 - SI TANK LOW LEVEL On the reverse side is Licensee Event Report 80-028 which is reportable under Technical Specification 6.9.2.B.2.

David P Hoffman Nuclear Licensing Administrator CC Director, Office of Nuclear Reactor Regulation Director, Office of Inspection and Enforcement NRC Resident Inspector - Palisades

$EP 5 '1980

PALIS ADES PLAl\\fT NRC FORM 366 17*77)

U.S. NUCLEAR REGULATORY COMMISSION LICENSEE EVENT REPORT CONTROL BLOCK:!'-_ _.___.__...___,__..__-;I CD (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 6

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LICENSEE CODE 14

'S LICENSE NUMBER 25 26 LICENSE TYPE 30 57 CAT 58 CON'T C£:I2J 1

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75 REPORT DATE SO EVENT DESCRIPTION AND PROBABLE CONSEQUENCES@

~

I During normal power operation, a low level alarm was received from the Gm I level switch on SI tank nA" (T 82 A).

Level switch is set at low level

[§]1J 1 limit of T.S. 3.3.lB.

Normal tank level was restored in 1.3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br />.

~

Power reduction was commenced 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> following initial time of tank [IE}

7 8

inoperability.

Reportable per TS 6.9.2.B2.

SYSTEM cooE IS I Fl@

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LER;RO CVENT YEAR

"-Y REPORT I 81 0 I NUMBER 21 22

CAUSE

CAUSE CODE SUBCODE COMPONENT CODE

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11 12 lJ 18 SEQUENTIAL OCCURRENCE REPORT NO.

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~(I REPORT TYPE l£J 30 l=1 31 PRIME COM?.

REVISION NO.

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32 COMPONENT ACTION FUTURE EFFECT SHUTDOWN r:::::;..

ATTACHMENT NPRD-4 TAKEN ACTION ON PLANT METHOD HOURS ~ SUBMITTED FORMSLIB.

SUPPLIER MANUFACTUR~R LJ;J@W@ W@ tLJ 10 Io I o Io I I NI@

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CAUSE DESCRIPTION ANO CORREc*rivE ACTIONS @

43 44 47 ITJ)) I Low level caused by apparent slow leakage from tank.

Inaccurate tank OJ))

level indication on analog channel resulted in level switch actuation o::ID prior to analog indication of low level.

Inaccuracy of analog channel attributed to loss of liquid in reference leg.

Reason for liquid loss ITID I unknown; instrument has been compensated electronically.

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STATUS

% ?OWER OTHER STATUS v:::J METHOD OF

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DISCOVERY DISCOVERY DESCRl?TION '2_~

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RELEASED OF RELEASE AMOUNT OF ACTIVITY ~

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45 so PERSONNEL EXPOSURES

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NUMBER A

TYPE DESCRIPTION 39 Gii] IO I O I Ol~@.__ __ N ______________________

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9 11 12 13 r.o PERSONNEL INJURIES

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NUMBER DESCRIPTION6

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N_A _______________ ~----~-~

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11 12 LOSS o< OR DAMAGE TO FACILITY t4:j\\

TYPE

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NAC USE ONLY lS~JEDQ DESCRIPTION~

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