ML20084U593

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Provides Addl Info Re AO 50-254/75-4 Concerning Misposistioned Fuel.No Gross Fuel Failure Occurred as Result of Misorientation.Ge Interested in Inspecting Misoriented Fuel Assembly
ML20084U593
Person / Time
Site: Quad Cities Constellation icon.png
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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._ Ouad es Gen: rating Station / s. I I Post Office Box 216 4-Cordova, Illinois 61242 Telephone 309/654-2241

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NJK-75-153 N;{ y l

March 25, 1975 s gg

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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 operation.

the time of our report to you, Unit 1 has re turne d to power 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 N.

f */ ' A& 'W, J. Kalivianakis Station Superintendent l

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cc: Region III, Directorate of Regulatory Ope rations J. S. Abel 8306290133 750325 PDR ADOCK 05000254 PDR '

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