ML20084U593
| ML20084U593 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities  |
| Issue date: | 03/25/1975 |
| From: | Kalivianakis N COMMONWEALTH EDISON CO. |
| To: | Oleary J Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20084U597 | List: |
| References | |
| NJK-75-153, NJK-75-81, NUDOCS 8306290133 | |
| Download: ML20084U593 (1) | |
Text
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s Co writh Edison I,)
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Ouad es Gen: rating Station
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Post Office Box 216 4-
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Cordova, Illinois 61242 Telephone 309/654-2241
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NJK-75-153 N;{ y l
s gg March 25, 1975
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Mr. John F. O ' Le a ry, Director s
Directorate of Licensing Regulation 4-U.
S.
NUCLE AR REGULATORY COMMISSION Washington, D.
C.
20545
REFERENCE:
Quad-Cities Nuclear Powe r S ta tion, Unit 1, NRC Docket No. 50-254, DPR 29, Previous Abnormal Occurrence Report No. 50-254/75-4.
Dear Mr. O' Leary:
1 In the referenced report conce rning mispositione d fuel in the Quad-Cities Unit 1 co re, it was indicated that the misoriente d assembly would be sipped to determine if there was any gross failure of the fuel cladding.
Detection o f cladding f ailure via sipping is based on comparison of samples from a large number of fuel assemblies that operated under the same conditions.
There are no assemblies to form a background for comparison and it was re co gnize d that only a failure that would have resulted in the release o f large quantities of ff==ien pr: ducts tc the coolant could be detected.
Since the time of our report to you, Unit 1 has re turne d to power operation.
The operational off gas rele as e rate and off-gas response to power ch an ge is identical to that p rio r to the removal o f the mis-oriented assembly.
It has th e re fo re been concluded that no gross fuel failure had occurred as a result of the misorien tation and that no further investigation with methods available at Quad-Cities will yield use ful info rmation.
General Electric has expressed an in te res t in disassembly and inspec-tion of the misoriented fuel assembly.
You will be informed of the results if this inspection is conducted.
Very truly yours, COMMONWEALTH EDISON COMPANY QUAD-CITI 'S LEAR WER STATION f
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A&
N.
J. Kalivianakis
'W, Station Superintendent l
NJK:SRH/dkp cc:
Region III, Directorate of Regulatory Ope rations J. S.
Abel 8306290133 750325 PDR ADOCK 05000254 PDR p
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