ML18065A131
| ML18065A131 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 09/25/1995 |
| From: | Gamberoni M NRC (Affiliation Not Assigned) |
| To: | Haas K CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| References | |
| GL-95-03, GL-95-3, TAC-M92260, NUDOCS 9509280189 | |
| Download: ML18065A131 (3) | |
Text
September 25, 1995 Mr. Kurt M. Haas P'"l ant Sa fety and Licensing Director s Plant Palisade 27780 Bl
- Covert,
SUBJECT:
Dear Mr.
On April ue Star Memorial Highway MI 49043 PALISADES PLANT - REQUEST FOR ADDITIONAL INFORMATION ON GENERIC LETTER (GL) 95-03 (TAC NO. M92260)
Haas:
28, 1995, the U.S. Nuclear Regulatory Commission issued GL 95-03, "Circum ferential Cracking of Steam Generator Tubes," which requested addresse es to evaluate recent operating experience related to circumferential
, justify continued operation until the next scheduled steam generator pections, and develop plans for the next steam generator tube cracking tube ins inspecti ons.
The staff has reviewed the June 27, 1995, response provided by Consumer s Power Company for the Palisades plant.
As a result of the review of ponse, the staff has identified areas for which additional information larification is needed.
The enclosure to this letter contains the your res and/or c informat 95-03.
In addit statemen (1994).
This req collecti expires please c Docket N ion needed for the staff to complete its review of your response to GL A response is requested within 30 days from the *date of this letter.
ion, we request that you resubmit the notarized statement.
The signed t provided in your June 27, 1995, response was incorrectly dated uest is within the original reporting burden for information on of 350 hours0.00405 days <br />0.0972 hours <br />5.787037e-4 weeks <br />1.33175e-4 months <br /> covered by OMB clearance number 3150-0011, which on July 31, 1997.
If you have any questions regarding this request, ontact me at (301) 415-3024.
- o. 50-255 Sincerely, Original signed by Marsha Gamberoni, Project Manager Project Directorate III-I Division of Reactor Projects - III/IV Office of Nuclear Reactor Regulation Enclosur e:
Request for Additional Information cc w/enc l: See next page DISTRIBU TION:
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REQUEST FOR ADDITIONAL INFORMATION
- 1.
It was indicated that circumferential cracking has not been identified at tube support plate intersections or in low row U-bends for inservice Combustion Engineering (CE) steam generators and that these areas are not considered areas of susceptibility applicable to Palisades. Provide the basis for this statement given that these areas have exhibited cracking in a CE steam generator that was replaced and given that these areas have exhibited circumferential cracking in steam generators manufactured by another vendor (i.e., at dented regions and in low radius U-bend tubes).
- 2.
Please clarify the statement that "any eddy current indication identified as a crack will be structurally evaluated for proper repair."
- 3.
During the Maine Yankee outage in July/August 1994, several weaknesses were identified in its eddy current program as detailed in NRC Information Notice 94-88, "lnservice Inspection Deficiencies Result in Severely Degraded Steam Generator Tubes."
In Information Notice 94-88, the staff observed that several circumferential indications could be traced back to earlier inspections when the data was reanalyzed using terrain plots. These terrain plots had not been generated as part of the original field analysis for these tubes.
For the rotating pancake coil (RPC) examinations performed at your plant at locations susceptible to circumferential cracking during the previous inspection (i.e.,
previous inspection per your Generic Letter 95-03 response), discuss the extent to which terrain plots were used to analyze the eddy current data. If terrain plots were not routinely used at locations susceptible to circumferential cracking, discuss whether or not the RPC eddy current data has been reanalyzed using terrain mapping of the data.
If terrain plots were not routinely used during the outage and your data has not been reanalyzed with terrain mapping of the data, discuss your basis for not reanalyzing your previous RPC data in light of the findings at Maine Yankee.
Discuss whether terrain plots will be used to analyze the RPC eddy current data at locations susceptible to circumferential cracking during your next steam generator tube inspection (i.e., the next inspection per your Generic Letter 95-03 response).
ENCLOSURE
~
Mr..
- K'urt M. Haas Consumers Power Company cc:
Mr. Thomas J. Palmisano Plant General Manager Palisades Plant 27780 Blue Star Memorial Highway Covert, Michigan 49043 Mr. Robert A. Fenech Vice President, Nuclear Operations Palisades Plant 27780 Blue Star Memorial Highway Covert, Michigan 49043 M. I. Miller, Esquire Sidley & Austin 54th Floor One First National Plaza Chicago, Illinois 60603 Mr. Thomas A. McNish Vice President & Secretary Consumers Power Company 212 West Michigan Avenue Jackson, Michigan 49201 J
Judd L. Bacon, Esquire Consumers Power Company 212 West Michigan Avenue Jackson, Michigan 49201 Regional Administrator, Region III U.S. Nuclear Regulatory Commission 801 Warrenville Road Lisle, Illinois 60532-4351 Jerry Sarno Township Supervisor Covert Township 36197 M-140 Highway Covert, Michigan 49043 Office of the Governor Room 1 - Capitol Building Lansing, Michigan 48913 U.S. Nuclear Regulatory Commission Resident Inspector's Office Palisades Plant 27782 Blue Star Memorial Highway Covert, Michigan 49043 Palisades Plant Nuclear Facilities and Environmental Monitoring Section Office Division of Radiological Health Department of* Public Health 3423 N. Logan Street P. O.. Box 30195 Lansing, Michigan 48909 Gerald Charnoff, Esquire Shaw, Pittman, Potts and Trowbridge 2300 N Street, N. W.
Washington DC 20037 Michigan Department of Attorney General Special Litigation Division 630 Law Building P.O. Box 30212 Lansing, Michigan 48909 August 1995