ML17173A795
| ML17173A795 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 05/02/1979 |
| From: | Janecek R COMMONWEALTH EDISON CO. |
| To: | Ziemann D Office of Nuclear Reactor Regulation |
| References | |
| TASK-06-10.B, TASK-6-10.B, TASK-RR NUDOCS 7905090370 | |
| Download: ML17173A795 (2) | |
Text
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- . - e Commonwealth Edison One First National Plaza, Chicago, Illinois Address Reply to: Post Office Box 767 Chicago, Illinois 60690 May 2, 1979 Mr. Dennis L. Ziemann, Chief Operating Reactors - Branch 2 Division of Operating Reactors U.S. Nuclear Regulatory Commission Washington, D.C.
20555
Subject:
Dresden Station Units 1 and 2 Dea~ Mr. Ziemann:
SEP Review of Shared Engineered Safety Features, Onsite Emergency Power, and Service Systems for Multiple Unit Stations, Topic VI-10.B NRC Docket Nos. 50-10 and 50-237 our staff has reviewed the evaluation submitted with your letter to Mr. c. Reed dated March 61 1979.
The following comments are the result of this review.
Page 6 The licensee is planning to replace the existing Unit 1 diesel driven pump with a 1000 GPM/2500 GPM pump.
Page 7 All three tanks are capable of being cross-connected and CST 2/3A and 2/3B ~
normally connected.
CST 2/3A and Tank T-105A are not normally connected.
These pumps can be cross-connected so that each pump can supply any of the other pumps' cooling loads except for the diesel generators.
Page 9 The Unit 1 Service Air System is not normally cross tied to the Unit 2/3 Service Air System.
.., 90 5 090376.,1
Mr. Dennis L. Ziemann May 2, 1979 Page 2 Page 9 Commonwealth Edison NRC !cket Nos. 50-10/237 The Unit 1 Emergency condenser contains a sufficient quantity of water for 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.
There is a manual bypass around the Unit 1 Emergency Condenser makeup valve.
Yours very truly,
~1:::;2 Nuclear Licensing Administrator Boiling Water Reactors