ML17326A126

Forwards LER 99-022-00 Re Electrical Bus Degraded Voltage Setpoints Too Low for Safety Related Loads.Listed Commitment Identified in Submittal

ML17326A126
Person / Time
Site:	Cook
Issue date:	09/17/1999
From:	Rencheck M INDIANA MICHIGAN POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML17326A127	List: ML17326A126 ML17326A129
References
NUDOCS 9909220260
Download: ML17326A126 (2)

Text

[1 g'CCESSION NBR:9909220260 l CA.TEGORY REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

DOC.DATE: 99/09/17 NOTARIZED: NO DOCKET FACIL:50-315 Donald C. Cook Nuclear Po~er Plant, Unit 1, Indiana M 05000315 AUTP.NASL~ AUTHOR AFFILIATION RENCHECK,M.W. Indiana Michigan Power Co.

RECIP;NAME RECIPIENT AFFILIATION Records Management Branch (Document Control Desk)

SUBJECT:

Forwards LER 99-022-00,electrical bus degraded voltage setpoints too low for safety related loads. Listed commitment identified in submittal.

DISTRIBUTION CODE: IE22T COPIES RECEIVED:LTR ENCL SIZE:

TITLE': 50.73/50.9 Licensee Event Report (LER), Incident Rpti etc.

NOTES:

RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL LPD3-1 1 1 STANG,J 1 1 0 INTERNA . FILE CENTER 1 1 NRR/DIPM/IOLB 1 1 R/DRIP/REXB 1 . 1 NRR/DSSA/SPLB 1 1 RES/DET/ERAB 1 1 RES/DRAA/OERAB 1 1 RGN3 FILE 01 1 1 EXTERNAL: L ST LO'BBY NARD 1 1 LMITCO MARSHALL 1 1 NOAC POORE,W. 1 1 NOAC QUEENER,DS 1 1 NRC PDR 1 1 NUDOCS FULL TXT 1 1 D

'E NOTE TO ALL "RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE WASTE. TO HAVE YOUR NAME OR ORGANIZATION REMOVED FROM DISTRIBUTION LISTS OR REDUCE THE NUMBER OF COPIES RECEIVED BY YOU OR YOUR ORGANIZATION, CONTACT THE DOCUMENT CONTROL DESK (DCD) ON EXTENSION 415-2083 FULL TEXT CONVERSION REQUIRED TOTAL NUMBER OF COPIES REQUIRED: LTTR 15 ENCL 15

s Indiana Michigan Power Company Cook Ntdear Rara

~

One Cook Rara Bridgnan, N49106 61 6 465 5901 Z

INOIANA NICHIGAN IaOWfR September 17, 1999 United States Nuclear Regulatory Commission Document Control Desk Washington, DC 20555 Operating License DPR-58 Docket No. 50-31 5 Document Control Manager:

In accordance with the criteria established by 10 CFR 50.73 entitled Licensee Event Re ort

~Sstem, the rottowing report is being submitted:

LER 31 5/99-022-00, "Electrical Bus Degraded Voltage Setpoints Too Low For Safety Related Loads."

The following commitment was identified in this submittal:

~ A new degraded grid voltage relay trip setpoint and tolerance will be established prior to entry into Mode 4, to ensure that all downstream safety related 600 VAC motors and 120 VAC control circuits receive adequate voltage to perform their safety functions during a degraded grid voltage condition.

Sincerely,

/Av M. W. encheck Vice President Nuclear Engineering Imbd Attachment J. E. Dyer, Region III R. P. Powers J. E. Pollock R. F. Godley R. Whale D. Hahn Records Center, INPO NRC Resident Inspector 9'PO'P2202bO 9'P09i 7 PDR ADQCK 050003i5 S PDR