ML20084T820
| ML20084T820 | |
| Person / Time | |
|---|---|
| Site: | Dresden, 05000000 |
| Issue date: | 07/06/1970 |
| From: | Brian Lee COMMONWEALTH EDISON CO. |
| To: | Morris P US ATOMIC ENERGY COMMISSION (AEC) |
| Shared Package | |
| ML20084T734 | List: |
| References | |
| 2061, NUDOCS 8306240144 | |
| Download: ML20084T820 (1) | |
Text
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J Commomveahh Edison Company ONE FIRST N A T ION A L PLAZA
- CHICAGO. I L'L I N O I S j
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ross arrice nox 767
- m ca c o, u u N o i s 6o6,o July 6, 1970
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,a Dr. Peter A. 'forris, Director JyL L Wl0 -
Division of Reactor Licensing d
U.S. Atomic Energy Connission
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Washington, D.C.
20545 "J
Subject:
Additional Information Relative to N.
Provisional Operating License DPR-19 for Dresden Unit 2
Dear Dr. ?! orris:
The purpose of this letter is to provide you with information
.M concerning recent operational difficultics on Dresden Unit 2 nnd our proposed corrective actions.
This informatio.s has been requested in.
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Attached hereto is Exhibit I containing our evaluation of b
the fo]Iowing operational difficultics:
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-1.
The rapid depressurization incident on June 5, 1970; c
- 2. ' Main stcan line isolation valves; and t
3 Execssive hydraulic forces in the high pressure coolant injection systen stean line; w
An investigative progran on unexplained fuel failures and
. excessive control rod scran times is in progress.
The results of this program will be submitted when it is coupleted.
In addition to three' signed originals, 19 copies of this infornation are also subnitted.
k/d
.Xpry truly yo 5
E k m C~n C uer. N ')
ff M Byrfn Lee, Jr. /j W
s m5 Assistant to tilo President M'
SUBSCR Dl'D and SWOPN to y
before ne this / 9 day
.; bg of 4 _/p 1970.
e JUL 6 1970 i 1. [
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COPY, SENT REGIO iN lJotary l'ublic to D,'
M 206:
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