ML17328A476
| ML17328A476 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 10/09/1990 |
| From: | Colburn T Office of Nuclear Reactor Regulation |
| To: | Alexich M AMERICAN ELECTRIC POWER SERVICE CORP., INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG |
| References | |
| TAC-77109, NUDOCS 9010160195 | |
| Download: ML17328A476 (6) | |
Text
October 9, 1990 Docket No. 50-315 Hr. Hilton P. Alexich,,Vice President Indiana l1ichigan Power 'Company c/o American Electric Power Service Corporation 1 Riverside Plaza
- Columbus, Ohio 43216
Dear t1r. Alexich:
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION - D.
C.
COOK UNIT 1 STEAN GENERATOR TUBE SLEEYING A)IENDIIENT REQUEST (TAC NO. 77109)
By letter dated June 27, 1990 (AEP:NRC:1129), you requested a license amendment for the D. C.
Cook Nuclear Plant, Unit No.
1 which would allow repair of steam generator tubes by sleeving.
Me have reviewed your request and have determined that additional information identified in the enclosure to this letter is required for the staff to complete its review.
This information has been discussed previously with your staff by telecon.
This letter constitutes our formal request.
Please respond expeditiously, in order to allow the staff to complete its review prior to your upcoming Unit 1 refueling outage.
I This request for information affects fewer than ten respondents; therefore, OMB clearance is not required under P.L.96-511.
S incere ly,
Enclosure:
Request for Additional Information cc:
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- yW UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 October 9, 1990 Docket No. 50-315 Nr. Hilton P. Alexich, Vice President Indiana Hichigan Power Company c/o American Electric Power Service Corporation 1 Riverside Plaza
- Columbus, Ohio 43216
Dear Vir. Alexich:
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION - D.
C.
COOK UNIT 1 STEAN GENERATOR TUBE SLEEVING AIiiENDNENT REQUEST (TAC NO. 77109)
By letter dated ilune 27, 1990 (AEP:NRC:1129), you requested a license amendment for the D. C.
Cook Nuclear Plant, Unit No.
1 which would allow repair of steam generator tubes by sleeving.
Re have reviewed your request arid have determined that additional information identified in the enclosure to this letter is required for the staff to comiplete its review.
This information has Leen discussed previously witt'our staff by telecon.
This letter constitutes cur formal request.
Please responc expeditiously, in order to allcw the staff to complete its review prior to your upcoIrinc Linit 1 refueling outaoe.
This request for informatiori affects fewer than ter. respondents; therefore, OYiB clearance is not t equired under P.L.96-511.
S incere ly,
Enclosure:
Request for Additional Information Timothy G. Colburn, Sr. Project hlanager Project Directorate III-1 Division of Reactor Projects - III, IV, V 8 Special Projects Office of Nuclear Reactor Regulation cc:
See next page
Mr. Hilton Alex ich 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 Stevensvi lie, 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 1 - 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 1 Riverside Plaza
- Columbus, Ohio 43216
ENCLOSURE RE VEST FOR ADDITIONAL INFORMATION INDIANA MICHIGAN POWER COMPANY COOK UNIT I I.
The following questions refer to CEN-313-P Revision 4-P.
I)
Section 4.0 discusses coordinated phosphate chemistry for secondary side water. which is no longer used.
Provide a discussion of the basis for use of Alloy 690 in current AVT secondary water chemistry and in primary water side service.
2)
Section 4.3 discusses the use of a post weld heat treatment (PWHT) for the sleeve upper weld.
It is stated that the PWHT is,used at the option of the utility.
We are concerned that the heat effect of the sleeve weld may reduce the corrosion resistance of the underlying tube.
Please provide test information justifying the omission of a PWHT, if PWHT is not used.
Include justification of the time and temperature cycle to be used.
Describe any residual stress measurements that have been performed.
3)
Please provide the most current data from the pure water stress corrosion cracking tests described under Section 6.2.3.
4)
It is stated in Section 9.3 that sleeves that do not pass the ultrasonic and visual inspections for leak tightness, may be accepted by the licensee as "potentially leak-limiting." If this is the licensee's policy, please provide a basis for their use in Cook Unit 1.
5)
Describe your program to maintain awareness of the state of the art in the nondestructive testing of steam generator tubes and your commitment to the utilization of improved inspection methods as they become commercially available.
)
F