05000315/LER-1979-030, Updated LER 79-030/03X-1 on 790417:design Change Coupled W/Relay Degradation Caused Relay to React Slower During Sequence.Design Change RFC-DC-12-2384 Installed as Preventive Measure

Updated LER 79-030/03X-1 on 790417:design Change Coupled W/Relay Degradation Caused Relay to React Slower During Sequence.Design Change RFC-DC-12-2384 Installed as Preventive Measure

ML17317B474
Person / Time
Site:	Cook
Issue date:	08/15/1979
From:	Beilman T INDIANA MICHIGAN POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17317B468	List: 05000315/LER-1978-065, Updated LER 78-065/03X-1 on 781229:previous Rept of Inoperable Pressurizer Level Channel Is No Longer Considered RO Due to Recent Tech Spec Change Deleting All Pressurizer Low Level Operability Requirements 05000315/LER-1979-022, Updated LER 79-022/03X-1 on 790323:to Prevent Recurrence of Nearly Simultaneous Bus Failures,Battery Equalizing Charge Has Been Reduced from 280 to 275 Volts.Addl Design Change Requested to Provide Overvoltage Alarm to Alert Op 05000315/LER-1979-030, Updated LER 79-030/03X-1 on 790417:design Change Coupled W/Relay Degradation Caused Relay to React Slower During Sequence.Design Change RFC-DC-12-2384 Installed as Preventive Measure 05000315/LER-1979-038, Updated LER 79-038/03L-0 on 790717:engineering Review in Progress to Determine Cause of Recurring Problem of Indicated Position of Control Rods N-13 & H-6 Exceeding Tech Specs 05000315/LER-1979-039, Updated LER 79-039/03L-0 on 790720:control Sys Repaired to Deliver Larger Quantity of Acid to Rcs.No Further Action Planned ML17317B467
References
LER-79-030-03X, LER-79-30-3X, NUDOCS 7908210541
Download: ML17317B474 (2)

LER-1979-030, Updated LER 79-030/03X-1 on 790417:design Change Coupled W/Relay Degradation Caused Relay to React Slower During Sequence.Design Change RFC-DC-12-2384 Installed as Preventive Measure

Event date:
Report date:
3151979030R00 - NRC Website

text

REGULATO FORMATION DISTRIBUTION KM (RIDS)

I ACCESSION NBR!7908? 1 0541'OC o DATE! 79/08/15 NOTARIZED!

NO DOCKET A

FACIL!50 315 Donald Co Cook Nuclear Power Plantr Un<'t"ir Indiana 8

05000315 AUTH~ NAME)

AUTHOA AFFILIATION BKILMANrT,P, Indiana 8 Michigan Power Co, RECIP NAME>

RKCIPIKNT AFFILiATION Region 3r Chicago'ffice of the Director SUBJECT!. Updated LER 79 030/03X 1

on 790417!design change coupled w/relay degradation caused relay to r'eeet slower during sequence,Des)gn change RFC 1?~2384

<nskalled as preventive measureo DISTRIBUTION CODE!

A002S COPIES RECEIVED!LTR

'NCL

'IZE!'ITLE!

INCIDENT REPORTS g

g

~

q t l l i

i r

g s

s o

i g

~

a I

4 II I

II 'l

! WONHJH+ioolSWAI+NQO+p<lpAR+ppSNOSOONIOWooQNOQWQHt1lplWNNOQooQSSQNSltOIpONIOIpIHNNSllpl+OlpWIpllp%

RECIPIENT IO COOK/NAME; ACTION!

05 BC INTERNAL! 01 REG FILE~

09 ILK.

14 TA/EDO 16 KEB 18 PLANT SYS BR 20 AD PLANT SY8 22'EAC SAFT BR*

24 KREGER 26'D/SITE ANAI

'~

?8 ACOENT'NLY8 E~

JORDAN/IE'MI~H STREET EXTERNAL! 03 LPOR 29 ACRS

~COPIES CTTR ENCL<

4 1

1 2

2 1

1 1

1 1

1 1

i 1

i 1

1 1

1 1

1 1

1 16 16 REC IPIENT ID COOK/NAME 02 NRC PDR 11 MPA 15 NOVAK/KNIKL 17 AO FOR ENGR 19 ILC SYS BR 21 AD'SYS/PROJ 23 ENGR'R 25 PAR SYS BR 27 OPERA LIC BR 29 AUX SYS BR HANAUERgS ~

04 NSIC COPIES LTTR ENCL' 1

3 3'

1i 1

1i 1

1 1

1i 1

1 1

TOTAL NUMBER OF COPIES'EQUlRKO!

LTTR 48 ENCL 48

I 4I I

r CIK C

II ~

t >>II f f fyt,f Qflglllf 1(f" t 9 f I8 r,

>> q I f, a y a 9 VP ') r.'

E) g (>) Q Q Q >p 0

~Wl >>>>>

N$ I

>>>>>>>>>n>>aaeew~

>>>>>>>>w>>>>>>e>>

ma w>>y s ~ aw>>>>a (tiiI

>m>> e wa e o wm a ee>>>> <<et >>>> w m e>>e wm>>>>

(

<a tf~

gf~ j

$ 1 i>N