ML17326B549
| ML17326B549 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 03/03/1989 |
| From: | Alexich M INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG |
| To: | Murley T NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| AEP:NRC:1065A, IEB-88-004, IEB-88-4, TAC-64962, TAC-64963, NUDOCS 8903100373 | |
| Download: ML17326B549 (4) | |
Text
gCCE~~TED DISIBI'TION DEMONDTRd+04 SYDTEII REGULATORY INFORMATXON DISTRIBUTION SYSTEM (RIDS)
ACCESSION NBR:8903100373 DOC.DATE: 89/03/03 NOTARIZED: NO DOCKET FACIL:50-315 Donald C.
Cook Nuclear Power Plant, Unit 1, Xndiana 6
05000315 50-316 Donald C.
Cook Nuclear Power Plant, Unit 2, Indiana 6
05000316 AUTH.NAME AUTHOR AFFILIATION ALEXICH,M.P.
(formerly Indiana
& Michigan Ele RECXP.NAME RECIPIENT AFFILIATION MURLEY,T.E.
Office of Nuclear Reactor Regulation, Director (Post 870411 p
SUBJECT:
Informs of completion of long-term resolution action for NRC Bulletin 88-004, "Potential Safety-Related Pump Loss."
DISTRIBUTION CODE:
IE11D COPIES RECEIVED:LTR
/
ENCL Q SIZE: 3 TITLE: Bulletin Response (50 DKT)
NOTES RECIPIENT ID CODE/NAME PD3-1 LA STANG,J INTERNAL: AEOD/DOA NRR/DEST/ADE 8H NRR/DEST/MEB 9H NRR/DOEA/GCB 11 ILRB12 02 RGN3 FILE 0 1 EXTERNAL: LPDR NSIC COPXES LTTR ENCL 1
0 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 RECIPIENT ID CODE/NAME PD3-1 PD AEOD/DSP/TPAB NRR/DEST/ADS 7E NRR/DOEA/EAB 11 NRR/DREP/EPB 10 NUDOCS-ABSTRACT RES/DSIR/EIB NRC PDR COPIES LTTR ENCL 1
1 1
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1 KGE 'IO ALL "RIDS" RECIPXENIS:
PLEASE HELP US IO REDUCE WASTE!
CXÃZACr 'IHE DOCGMEhZ 02MKL DESK, RCCM Pl-37 (EXT. 20079)
IO ELIMINATEKM'AME FBOH DISTRIBUTION LISTS FOR DOCUMEXIS YOU DGNiT NEED}
D D
S TOTAL NUMBER OF COPIES REQUIRED:
LTTR 19 ENCL 18
Indiana Michigan Power Company P.O. Box 1663$
Cotumbus, OH '3216 WPMt",V NlCMlGAe PQMfM AEP:NRC:1065A TAC Nos.
64962/64963 Donald C.
Cook Nuclear Plant Units 1 and 2
Docket Nos.
50-315 and 50-316 License Nos.
DPR-58 and DPR-74 FINAL RESOLUTION OF NRC BULLETIN 88-04 U.
S. Nuclear Regulatory Commission Document Control Desk Washington, D.
C.
20555 Attn:
T.
E. Murley March 3, 1989
Dear Dr. Murley:
This letter is to inform you of the completion of the long term resolution action for NRC Bulletin 88-04, "Potential Safety Related Pump Loss."
In our submittal AEP:NRC:1065, dated July 8,
- 1988, we provided details of our investigation of the concerns discussed in this Bulletin. It was found that the pump-to-pump interaction concern only applies to our RHR pumps.
Short term modifications were not necessary based on the fact that the average performance difference between the two pumps on each unit is less than the shutoff head required to deadhead the weaker RHR pump.
The proposed long-term corrective action is to normally operate with the RHR cross-tie valves closed.
This would make the miniflow circuits for each RHR pump independent, thereby removing the potential for deadheading the weaker pump.
The closure of the RHR cross-tie valves would mean, however, that one RHR pump could inject into only two loops rather than all four loops.
This operating configuration required the NRC to review and approve our analysis for two-loop injection.
The SER approving this analysis was received on February 8,
1989.
We interpret the approval of our two-loop injection analysis to'mean we are allowed to close the RHR cross-tie valves for normal operations.
The SER approves the closure of 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.
The Operation Department will be responsible for protecting the RHR pumps in this situation when deadheading is possible.
Dr. T.
E. Murley AEP:NRC:1065A This letter is submitted pursuant to 10 CFR 50.54(f) and, as such, an oath of affirmation is enclosed.
Sincerely,
/P~/,.
r! gzy<i,z A<
M. 0. Alexich Vice President MPA/eh cc:
D. H. Williams, Jr.
W.
G. Smith, Jr.
- Bridgman R.
C. Callen G. Charnoff G.
Bruchmann A. B. Davis
- Region III NRC Resident Inspector
- Bridgman
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 forgoing Response to 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.
~
'ubscribed and sworn to before me this day of
,j, 198~.
NOTARY PUBLIC NaRSARA ~NN S<<"3<<
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