ML18051A848
| ML18051A848 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 04/09/1984 |
| From: | Crutchfield D Office of Nuclear Reactor Regulation |
| To: | Vandewalle D CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| References | |
| LSO5-84-04-010, LSO5-84-4-10, NUDOCS 8404130295 | |
| Download: ML18051A848 (3) | |
Text
.....
Docket No~ 50-255 LS05-84-04-010 Mr. David J. VandeWalle Nuclear Licensing Administrator Consumers Po~er Company.
1945 West Parnall Road Jackson, Michigan 49201
Dear Mr. VandeWalle:
Apr i l 9, 1984
SUBJECT:
REQUEST.FOR ADDITIONAL INFORMATION - TECHNICAL SPE~IFICATION CHANGE FOR.OPERATION WITH 50% STEAM GENERATOR TUBE PLUGGING Re:
Palisades Plant As the result of our review of your March 16, 1984 submittal regarding operation with up to 50% of the steam generator tubes plugged, we find that we need a.dditional information identified in the enclosure.
To meet y6µr requested restart schedule~ we will need your response by April 23, 1984.
A copy.of'the enclosure was telecopied to y'our'staff on Apri 1 9, 1984.
The reporting and/or recordkeeping requirements contained in this letter affect fewer than**ten respondents; therefore OMB clearanc~
is not required under P.L.96-511.
Enclosure:
Request for Additional Information cc w/enclosure:
See next page 0~#5
. ~Paul son: cc*
' 1q /84 DL rJ. B #5 DC~field
"{I 9184 Sincerely A:ti. ~=*
Chief,
~rating Reactors Branch #5 Division of Licensing
.DISTRIBUTION Docket File NRC** PDR
~*
Local.PDR NSIC ORB #5 Readin'g:
DCrµtchfield OELD ELJordan JNGrace ACRS. {10)
LA.
- : WPaul son..
"',~/
'" tJ~.f)
y Mr. David J. VandeWalle cc M. I. Miller, Esquire Isham, Lincoln & Beale Suite 4200 One First National Plaza Chicago, Illinois 60670 Mr. Paul A. Perry, Secretary Consumers Power Company 212 West Michigan Avenue Jackson, Michigan 49201 Judd L *. Bacon, Esquire Consumers Power Company 212 West Michigan Avenue Jackson, Michigan 49201 James G. Keppler, Regional Administrator Nuclear Regulatory Commission, Region III 799 Roosevelt Road Glen Ellyn, Illinois 60137 Township Supervisor Covert Township Route 1, Box 10 Van Buren County, Michigan 49043 Lee E. Jager, P.E., Chief Environmental and Occupational Health Services Administration Michigan Department of Public Health 3500 N. Logan Street Post Office Box 30035 Lansing, Michigan 48909 Office of the Governor r
Room 1 - Capitol Building Lansing, Michigan 48913 Palisades Plant*
ATTN:
Mr. Robert Montross Plant Manager Covert, Michigan 49043 U.S. Environmental Protection Agency Federal Activities Branch Region V Office ATTN:
Regional Radiation Representative 230 South Dearborn Street Chicago, Illinois 60604 Resident Inspector c/o U.S. NRC Palisades Plant Route 2, P. 0. Box 155 Covert, Michigan. 49043
ENCLOSURE QUESTIONS ON PALISADES TECHNICAL SPECIFICATION CHANGE FOR OPERATION WITH 50%
S. G. TUBE PLUGGING (XN-NF-84-14)
- 1.
The present analysis has been predicated on a 60% - 40% tube failure rating.
How well would the analytical methods predict a more lopsided tube plugging and what would be the effect on reactor operation?
(assume that the tube plugging does exceed the level of 50% total)
- 2.
The level o~ the proposed steam generator tube plugging is beyond the range of anything the staff has reviewed and the industry has experienced in thE:! past. Therefore, how did you assure yourself of the adequacy of the calculations for the loop flow and the loop dependent parameters?
- 3.
For a 60% -
40% operation one would expect significant core power tilt *.
What were the results of your calculations on core power tilt prediction?
- 4.
In view of 2 above, how well have the analytical methods predicted core perfonnance with plugged tubes?
Were there any extrapolations made for the methods used?
Will the licensee institute a verification program to monitor perfonnance as a function of the number of tubes plugged?