ML20037B032
| ML20037B032 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 01/11/1977 |
| From: | Ziemann D Office of Nuclear Reactor Regulation |
| To: | Bolger R COMMONWEALTH EDISON CO. |
| References | |
| NUDOCS 8009030733 | |
| Download: ML20037B032 (3) | |
Text
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'50-249 KRGoller M 11 1977 TJCarter DLZiemann OELD temanwealth Edison Company 01&E (3)
ATT!!: tir. R. L. Bolger MGrotenhuis Assistant Vice President RDSilver Post Office Box 767 P0'Connor Chicago, Illinois 60593 RMDiggs LGHulman Gentlenen:
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TIES?E t ::UCLEAR POER STATIO:! U.';IT : 0S.1, 2 AfD 3 As a result of our continuing review of your Appendix D Technical Snecifications subnitted on August 20, 1976, we find that we need l
additional inforr'atin, to complete our evaluation.
The specific infor-i mation required is listed in Enclosure 1.
i The items in the enclosure were discussed with your staff in our r'estinq at the Dresden Station on December 14, 1976.
To raintain our review schedule, your resconse to the ite.r.s in the enclosure is requested by January 31, 1977.
Please contact us if you desire further discussion or clarification of the noterial recuested.
Sincerely, Ortainal signed by Dennis L. Ziemann Dennis L. Ziemann, Chief Operating Reactors Cranch !2 Division of Operating Perctors
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Commonweal th Edison Company January 11, 1977 cc w/ enclosure:
Mr. Johr. W. Rowe Isham, Lincoln & Beale Counselors at Law One First National Plaza, 42nd Floor Chicago, Illinois 60603 Anthony Z. Roisman, Esquire Roisman, Xessler and Cashdan 102515th Street, N. W., 5th Floor Washington, D. C.
20005 Morris Public Library 604 Liberty Street Morris, Illinois 60451
ENCLOSURE 1 REGUEST FOR ADDITIONAL INFORMATION DRESDEN STATION UNIT ~N05.' 1, 2, & 3 PRESENT OPERATING' MODE
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In reference to the proposed change from 50,000 gpm to 500,000 gpm 1.
blowdown from Units 2 and 3, please provide the following (at average flow and low flow in the Illinois and Xankakee Rivers).
An analysis of the increased blowdown on the thermal characteristics a.
of the Illinois River.
b.
A description of the thermal effects of this change on the biota of the Illinois River.
An analysis describing how this change in blowdown (and presumably c.
change in intake) affects the Kankakee River.
(1)
Furnish values for water intake velocities at the trash bars and traveling screens when blowdown is 500,000 gpm.
(2)
Provide an analysis of how this change affects impingment and entrainment.
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(3) What percentage of the Kankakee River flow will now be used -
at the intake (total Units 1, 2, and 3 intake) during operation with 500,000 blowdown?
2.
Provide the data, models, and assumptions used in answering Question 1 above.
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