ML17329A056
| ML17329A056 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 06/04/1991 |
| From: | Colburn T Office of Nuclear Reactor Regulation |
| To: | Fitzpatrick G INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG |
| References | |
| IEB-89-001, IEB-89-1, TAC-73164, TAC-73165, NUDOCS 9106190164 | |
| Download: ML17329A056 (6) | |
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UNITEDSTATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 June 4, 1991 Docket Nos.
50-315 and 50-316 Mr. Gene Fitzpatrick, Vice President Indiana Michigan Power Company c/o American Electric Power Service Corporation 1 Riverside Plaza
- Columbus, Ohio 43216
Dear Mr. Fitzpatrick:
SUBJECT:
RESPONSE
TO NRC BULLETIN 89-01:
FAILURE OF WESTINGHOUSE STEAM GENERATOR TUBE MECHANICAL PLUGS (TAC NOS.
73164 AND 73165)
On May 15,
- 1989, NRC Bulletin 89-01:
Failure of Westinghouse Steam Generator Tube Mechanical Plugs was issued to all holders of operating licenses or construction permits for pressurized water reactors (PWRs).
The bulletin identified concerns with certain mechanical plugs supplied by Westinghouse and requested that licensees determine whether these plugs were installed in their steam generators and, if so, that an action plan be implemented to ensure that these plugs will continue to provide adequate assurance of reactor coolant system (RCS) pressure boundary integrity under normal, transient, and postulated accident conditions.
By letter dated June 20, 1989, (AEP:NRC: 1096) you responded to the subject bulletin for D.
C.
Cook Nuclear Plant Units 1
and 2.
You indicated that Unit 2 is operating with new steam generators and, therefore, has no mechanical plugs installed.
You further indicated that 538 plugs of the suspected heats were installed in the Unit 1 steam generators and indicated that they would be repaired or replaced during the 1990 Unit 1 refueling outage.
The staff considers this item closed for Unit 2.
The staff notes that although Amendment No.
151 was issued to Facility Operating License No. DPR-58 on December 5, 1990, to allow sleeving of defective generator
- tubes, no sleeving took place during that refueling outage.
Please confirm within 30 days receipt of this letter that, as stated in your June 20, 1989 letter, the 538 mechanical plugs of concern in Unit 1 have been either repaired or replaced during the 1990 refueling outage.
Upon receipt of your confirmation, we will consider this item closed for D. C.
Cook Unit 1.
Although not specifically stated in your response, it is implied that no future installation of mechanical plugs from 9S0SS90~ee 9>060a,'
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the suspect heats will occur at either D.
C.
Cook Units 1 and 2.
Please notify me if you have any questions or if our understanding is incorrect.
My phone number is (301) 492-1341.
Sincerely, cc:
See next page Timothy G. Colburn, Sr. Project Manager Project Directorate III-1 Division of Reactor Projects III/IV/V Offic of Nuclear Reactor Regulation
Mr. Gene Fitzpatrick Indiana Michigan Power Company Donald C.
Cook Nuclear Plant CC:
Regional Administrator, Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137 Attorney General Department of Attorney General 525 West Ottawa Street Lansing, Michigan 48913 Township Supervisor Lake Township Hall Post Office Box 818 Bridgman, Michigan 49106 Al Blind, Plant Manager Donald C.
Cook Nuclear Plant Post Office Box 458 Bridgman, Michigan 49106 U.S. Nuclear Regulatory Commission Resident Inspectors Office 7700 Red Arrow Highway Stevensville, Michigan 49127 Gerald Charnoff, Esquire Shaw, Pittman, Potts and Trowbridge 2300 N Street, N.W.
Washington, DC 20037 Mayor, City of Bridgman Post Office Box 366 Bridgman, Michigan 49106 Special Assistant to the Governor Room I - State Capitol Lansing, Michigan 48909 Nuclear Facilities and Environmental Monitoring Section Office Division of Radiological Health Department of Public Health 3500 N. Logan Street Post Office Box 30035 Lansing, Michigan 48909 Mr. S. Brewer American Electric Power Service Corporation I Riverside Plaza
- Columbus, Ohio 43216
the'uspect heats will occur at either D. C.
Cook Units 1 and 2.
Please notify me if you have any questions or if our understanding is incorrect.
My phone number is (301) 492-1341.
Sincer ely, cc:
See next page
/s/
Timothy G. Colburn, Sr. Project Manager Project Directorate III-1 Division of Reactor Projects III/IV/V Offic of Nuclear Reactor Regulation DISTRIBUTION tRET7ltg NRC 8
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