ML20009C709

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Responds to IE Bulletin 81-03 Re Flow Blockage Caused by Corbicula Sp & Mytilus Sp .No Potentially Affected Sys Have Been Filled W/River Water.Preventive Methods Will Be Submitted by 810821
ML20009C709
Person / Time
Site: Marble Hill
Issue date: 07/03/1981
From: Shields S
PSI ENERGY, INC. A/K/A PUBLIC SERVICE CO. OF INDIANA
To: James Keppler
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
IEB-81-03, IEB-81-3, NUDOCS 8107210388
Download: ML20009C709 (1)


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Senior Vice President.

D Nuclear Division Mr. James G. Keppler, Director Docket Nos.: STN 50-546 U. S. Nuclear Regulatory Commission STN 50-547 Region III Construction Permit Nos.:

799 Roosevelt Road CPPR - 170 Glen Ellyn, Illinois 60137 CPPR - 171 Marble Hill Nuclear Generating Station - Units 1 and 2 IE Bulletin No. 81-03

Dear Mr. Keppler:

In response to IE Bulletin No. 81-03, Public Service Company of Indiana, Inc. (PSI) has determined that no Mytilus sp. have been reported near Ma: ole Hill in the Ohio River, the source and receiving water for the statior..

However, quarterly aquatic studies performed since 1977 have shown low density populations of Corbicula sp. in the Ohio River near Marble Hill.

At this time no potentially affected systems have been filled with river water. Water being used during the construction phase for fire protection, potable water, and other construction uses is obtained from wells.

PSI is currently investigating methods of prevention and detection of Cor-bicula sp. buildup in water systems at Marble Hill. Due to the complexity of this investigation, PSI needs additional time to complete the requirements of this bulletin. PSI therefore requests an extension to August 21, 1981 to respond to this bulletin.

Sincerely,

. W. Shields 6fl LGY/mjg g

cc: Director, Office of Inspection & Enforcement

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U. S. Nuclear Regulatory Commission Washington, D. C. 20555 E. R. Schweibinz, P. E.

J. J. Harrison W

8107210388 810703

, 51 0 PDR ADOCK 05000546 G

PDR 6 1981 P. U. Box 190, New Washington, Indiana 47162 812. 289.1000 39-,