ML20084K892
| ML20084K892 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities  |
| Issue date: | 02/09/1972 |
| From: | Stephenson B COMMONWEALTH EDISON CO. |
| To: | Morris P US ATOMIC ENERGY COMMISSION (AEC) |
| Shared Package | |
| ML20084K817 | List: |
| References | |
| AO-1-72-2, NUDOCS 8305200026 | |
| Download: ML20084K892 (2) | |
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Attention:
Dr. Peter Morris Director Division of Beactor Licensing Reference; Facility Operating License - DPR 29 Appendix A - Section 3.lCA
Dear Dr. Morris:
As set forth by the Technical S pe c i fi c a t i ons for Quad-Cities Nuclear Power Statinn, Sec ti nn 3 10A -
Refueling I n t a rl oc ir s, the f all avi ng abnorke l accurrence i
in reported 8F 1 72.2.
- 45 p.n.,
while mov'.ne On February 7, 1072 at
- a fu el asce'pb]y out of the Unit 1 reactor vessei
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for neutron s ou r c e remcval, operations discovered i
that a rod withdrev b]ock failed.
nperationn vere Tollowing approved step-ty-step procaiures whi-h d'1 not call for control red wtthdenwa*.
The i t. li c a t i o n of rod block failure was visual in that the " rod xt" permit light remained on w!th the re ueli ng br id ge o,er the ren'+or cavity wh:le fuel a s s a:r h ! y ve ! @ t was an the c' apple, d ed Upon discovery of the fsflure, fuel transfer oper.
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attar was terminated and tka *:eitrica) maintenanca g
gr ou p vas acrigned tr,1etermt ae tne cause for failure.
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readjusted with respect to the roller arm and clamped tight.
Switch operation was tested, the interlock circuit tested, and fuel trans fer operation resumed.
Very truly yours, I.
COMM0WEALTI EDISON COMPANT Quad-Cities Nuglear Power Station 14 f
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