ML18043A690
| ML18043A690 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 04/17/1979 |
| From: | Ziemann D Office of Nuclear Reactor Regulation |
| To: | Bixel D CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| References | |
| NUDOCS 7905230602 | |
| Download: ML18043A690 (4) | |
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APR 1 7 1979 Mr. David Bixel Nuclear Licensing Administrator Consumers Power tompany 212 West Michigan Avenue
.Jackson, Michigan 49201
Dear Mr. Bixel:
We have initiated our review of the Palisades steam generat9r replace-ment program submitted by your letter of January 3, 1979, and have several questions, enclosed; rel~ted to your evaluation of alternatives.
To maintain our review schedule we request your-reply within 60 days of the date of*this letter.
Additional questi6ns~ related to-this or other sections of the report~
may develop as.the review proceeds and we wil_l transmit such partial set of questions rJhen they arise.
Enclosure:
Steam Genera tor -
. Repair Report cc:
See next paqe Sincerely, Origirial Signed by:
Dennis L. Ziemann Dennis L. Ziemann, Chief Operating Reactors Branch #2 Division of Operating Reactors
- DISTRIBUTION:
OI&E(3)
DLZiemann RSilver HSmith GKnighton JVoungblood CBarth RLBa 11 ard JRBuchanan TERA -
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Docket NRC PDR Local PDR ORB#2 ROG NRR ROG VStello DEisenhut BGrimes RVollmer TJCarter WRussel 1 OELD ACRS(l6)
DDavis 97 *9052so6ci~
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DATE~
me FORM 318 (9-76) NRCM 02.CO
- u.&. GOVERNMl!NT PRINT;NG OP'FICE: 197D - ze"s - 789.
Mr. David Bixel 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 Myron M. Cherry, Esquire Suite 4501 One IBM Plaza Chica~o. Illinois 60611 Kalamazoo Public Library 315 South Rose Street Kalamazoo, Michigan 49006
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- April 17, 1979
.,:.... '_.. '..C PALISADES PLANT STEAM GENERATOR REPAIR REPORT
- DOCKET NO. 50-255 8.1 Evaluation of Alternatives Table 8.8-1, Comparison of Major Repair Alternatives, estimates the cost of replacement power during the 24 month period required for replacement of the steam generators at a total cost of $200 million; The report stated that a four year procurement lead time is required for delivery of the new steam generators. Give a detai.led cost breakdown of the type and cost of replacement power during this 24 month period as well as for the time periods for alternate repairs.
The replacement power cost estimates should be in mills/kWh and thousands of dollars per day.
Based on required procurement times, the earliest time of replacement would occur in 1983.
Include the reference year when replacement power will be required for each type of steam generator repair.
Length of Repair Outages Sections 8.4, 8.5, and 8.6 give the estimated times of repairs as 36 months for retubing the original units, 24 months for complete replace-ment of the units and 30 months for repair of the evaporator sections only. Table 8.4-1, Steam Generator Alternative Costs9 gives the total estimated project costs of all three alternatives. Complete replacement $75.0 million, evaporator repair $80.0 million and jJ:\\,
. 'retubing $75.0 million.. The project costs are fairly close, howeve)~~;tfI:}r:,,.* ::*
the big difference is the cost of replacement power associated with_
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plant shutdown.
Because of the extensive period of plant outage and
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- high cost of replacement power include a detailed explanation for these required times.
Are the 24, 30; and 36 month periods based on single shifts or has double shifts been considered in an attempt to reduce the high cost of replacement power.
8.7 Man-Rem Consideration The three alternate repair methods have comparable direct costs. The Palisades Plant Steam Generator Repair Report, Docket No. 50-255, also shows the occupational exposure of 1200-5000 man-rem for complete repiacement of steam generators and. replacement of evaporator sections.
Retubing the steam generators, in place, has an estimated 40,000 man-rem exposure, Table 8.8-1 Comparison of Repair Alternatives.
Based on biological savings of $1000/man-rem {10 CFR 50, Appendix I) the differential exposure cost is $35,000,000 if alternate three is selected over the other alternatives. Give a detailed breakdown of how the man-rem exposure was estimated for retubing the steam generators. Also, include a breakdown of man-rem exposures for the other alternates. The man-rem estimate should be of same detail as Table 17~ Comparison of Exposure Estimates in NUREG/CR-0199, "Radiological Assessment of Steam Generator Removal and Replacement.
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