ML17328A680

Responds to NRC Bulletin 88-004, Potential Safety-Related Pump Loss. Study Planned to Evaluate Alternative Actions to Be Taken for Protecting RHR Pumps

ML17328A680
Person / Time
Site:	Cook
Issue date:	04/23/1990
From:	Alexich M INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	Murley T NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
IEB-88-004, IEB-88-4, NUDOCS 9004300237
Download: ML17328A680 (4)

Text

ACCELERATED UTION DEMONSTRATION SYSTEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

ACCESSION NBR:9004300237 DOC.DATE: 90/04/23 NOTARIZED: YES DOCKET FACIL:50-315 Donald C. Cook Nuclear Power Plant, Unit 1, Indiana & 05000315 50-316 Donald C. Cook Nuclear Power Plant, Unit 2, Indiana & 05000316 AUTH. NAME AUTHOR AFFILIATION ALEXICH,M.P. Indiana Michigan Power Co.'formerly Indiana & Michigan El'e RECIP.NAME RECIPIENT AFFILIATION MURLEY,T.E. 'ocument Control Branch (Document Control Desk)-

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SUBJECT:

Responds to NRC Bulletin 88-004, "Potential Safety Related Pump Loss."

DISTRIBUTION CODE: IE37D COPIES RECEIVED:LTR ENCL SIZE:

TITLE: Bulletin 88-004 re Potential Safety-Related Pump Loss NOTES:

RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR E CL ID CODE/NAME LTTR ENCL PD3-1 LA 1 PD3-1 PD GIITTER,J. 1 INTERNAL: AEOD/DOA AEOD/DS P/TPAB ALEXION,T 13E21 MCCOY, M 8E23 NRR/DET/EMEB9H3 NRR/DOEA/OEAB11 NRR/DOEA/OGCB11 NRR/DREP/PEPB9D NRR/DST 8E2 /XMAS/M 12 NUDOCS-ABSTRACT ~REg ELLE 0~2 RES/DSIR/EIB RGN3 FILE 01 EXTERNAL: LPDR NRC PDR NSIC NOTE TO ALL "RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE WAS'ONTACT THE DOCUMENT CONTROL DESK, ROOM Pl-37 (EXT. 20079) TO ELIMINATEYOUR NAME FROM DISTRIBUTION LISIS FOR DOCUMENTS YOU DON'T NEEDl TOTAL NUMBER OF COPIES REQUIRED: LTTR 20 ENCL

Indiana Michigan Power Company

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P.O. Box 16631 Coiumbus, OH 43216 INDIANA NICHIGiAN POWER AEP:NRC:1065C Donald C. Cook Nuclear Plant Units 1 and 2 Docket Nos. 50-315 and 50-316 License Nos. DPR-58 and DPR-74 NRC BULLETIN 88-04: POTENTIAL SAFETY RELATED PUMP LOSS U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555 Attn: T. E. Murley April 23, 1990

Dear Dr. Murley:

This letter is to inform you that we have completed the RHR pump long-term corrective action for NRC Bulletin 88-04, "Potential Safety Related Pump Loss." The long-term corrective action is to normally operate with the RHR cross-tie valves closed. This will make the miniflow circuits for each RHR pump independent, thereby removing the potential for deadheading the weaker pump.

Revisions to plant procedures for operating with the RHR cross-tie valves closed were approved on March 22, 1990. Both units are now normally operating with the RHR cross-tie valves closed.

Our SER approves closing either the SI cross-tie valves or the RHR cross-tie valves, but not both at the same time. When the SI cross-tie valves need to be closed for testing or maintenance, the RHR cross-tie valves would be opened for that period of time.

Administrative controls have been established for protecting the RHR pumps in this situation when deadheading is possible. This does place an additional administrative burden on the control room operators. A study is planned to evaluate alternative actions that may be taken for protecting the RHR pumps. We will inform your staff prior to implementing any alternative action resulting from this study.

As stated in our submittal AEP:NRC:1065B dated December 11, 1989, the long-term resolution for the motor-driven auxiliary feedpumps will be completed during the refueling outages scheduled for 1992.

90043002:~7 $ C>0423 PDR ADOCK 050003k!5 0 I= DC

Dr. T. E. Murley AEP:NRC:1065C This letter is, submitted pursuant to 10 CFR 50.54(f) and, as such, an oath is enclosed.

Sincerely, M. . Alex ch Vice President ldp cc: D. H. Williams, Jr.

A. A. Blind - Bridgman R. C. Callen Q. Charnoff A. B. Davis - Region III NRC Resident Inspector - Bridgman NFEM Section Chief

COUNTY OF FRANKLIN Milton P. Alexich, being duly sworn, deposes and says that he is the Vice President of licensee Indiana Michigan Power Company, that he has read the foregoing Response to NRC Bulletin 88-04: Potential Safety Related Pump Loss and knows the contents thereof; and that said contents are true to the best of his knowledge and belief.

Subscribed and sworn to before me this day of 199 ~

NOTARY PUBLIC