ML20004F559

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Forwards RO 050-254/72-10
ML20004F559
Person / Time
Site: Quad Cities Constellation icon.png
Issue date: 06/12/1978
From: Hunnicutt D
US ATOMIC ENERGY COMMISSION (AEC)
To: James Keppler
US ATOMIC ENERGY COMMISSION (AEC)
Shared Package
ML20004F549 List:
References
FOIA-81-93 720612-02, 720612-2, NUDOCS 8106190077
Download: ML20004F559 (2)


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UNITED STATES l

ATOMIC ENERGY COMMISSION

.G DIVISION OF COMPLIANCC mEGION lli j*

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GLEN ELLYN. ILLINOls 60137 0121 ess-esso June 12, 1972 i

J. G. Keppler, Chief, Reactor Testing and Operations Branch

- Directorate of Regulatory Operations, Hec.dquarters C010:0NWEALTH EDISON COMPANY LICENSE NO. DPR-25 QUAD-CITIES UNIT 1 DAMAGE TO A REINFORCED RUBBER EXPANSION JOINT AND FLOODING OF THE LOWER LEVEL OF THE TURBINE BUILDING The attached inquiry report ic forwarded for information, j

Licensee personnel.ere performing work on the reverse flow valves on the north end of the north half of the main condenser, when the northeast valte closed. This sudden closure resulted in dama;e to the reinforced rubber expansion joint and flooding of the lowcr level of the turbine building to a depth of about 14.5 feet.

The licensee deternined that no radioactivity was released during removal of the untreated water (approximately 600,000 gallons) from this unrestricted area.

The flooding resulted in the loss of the 1 and the 1/2 diesel generator cooling water pumps and various other safety related equipment.

l The reactor had been shut down for scheduled maintenance for approximately nine days prior to this incident, The licensee will itsue a report to the Directorate of Licensing within i

ten days as required by the technical specifications.

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J. C. Keppler

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June 12, 1972 e

This incident will be included in the inspection plan for the next inspection at this facility.

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> N a. N D. M. Hunnicutt, Chief Reactor Testing and Startup Branch

Attachment:

RO Inquiry Rpt No. 050-254/72-10 (2 cys)'

cc:

H. D. Thornburg, RO J. B. Henderson, RO R. B. Minogue, RS (3)

R. S. Boyd, L (2)

R. C. DeYoung, L (2)

D. J. Skovholt, L (3)

H. R. Denton, L (2)

P. A. Morris, RO R. H. Engelken, RO RO Files DR Central Files p

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