05000316/LER-1981-015-03, /03L-0:on 810416,degraded Grid Voltage Relays Were Discovered Out of Spec on T 21A,T 21B,T 21C & T 21D Buses. Cause Not stated.Re-evaluation of Relay Tolerances Underway

/03L-0:on 810416,degraded Grid Voltage Relays Were Discovered Out of Spec on T 21A,T 21B,T 21C & T 21D Buses. Cause Not stated.Re-evaluation of Relay Tolerances Underway

ML17319A868
Person / Time
Site:	Cook
Issue date:	05/15/1981
From:	Rischling J INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17319A867	List: 05000316/LER-1981-015-03, /03L-0:on 810416,degraded Grid Voltage Relays Were Discovered Out of Spec on T 21A,T 21B,T 21C & T 21D Buses. Cause Not stated.Re-evaluation of Relay Tolerances Underway 05000316/LER-1981-016-03, /03L-0:on 810416,setpoint Value for Turbine Impulse Chamber Pressure Bistable Was Discovered to Be Wrong.Caused by Incorrect Tech Specs.Bistables Reset.Tech Spec Change in Progress ML17319A865
References
LER-81-015-03L, LER-81-15-3L, NUDOCS 8105210332
Download: ML17319A868 (2)

LER-1981-015, /03L-0:on 810416,degraded Grid Voltage Relays Were Discovered Out of Spec on T 21A,T 21B,T 21C & T 21D Buses. Cause Not stated.Re-evaluation of Relay Tolerances Underway

Event date:
Report date:
3161981015R03 - NRC Website

text

REGULATO INFORMATION DISTRIBUTION PKTEM (RIDS)

ACCESSION NBR!8105210332 DOC ~ DATE! 81/05/15 NOTARIZED:

NO FACkt.";50-3ie Oona/d G.

Cook hluclear Power'lant<

Unit 2, Iiidiana 8

AOYH;NAME" AUTHOR AFFILIATION

'isr.RLlNGr J>>,L; Jndiaiia. I HicjiÃgan Electri'c Co ~

REMI f e NAM4>>

REGIPLENl AFF IL'IATiohl Region SrChicagoi"6i'fice of the Director DOCKET 05OO0316

SUBJECT:

DISTRIBUTION COOK,! A002S

'FIICK'ncident>> Reports LER 81 "015/03L>>-0:on 810416rdegraded grid vol tage relays wer e discover ed out ok spec on T 21Ar T 21Br T 21C 8

T '21D &usses,

'ause riot stated,Re evaluation of relay tolerances underway'

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