ML20004D382
| ML20004D382 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 05/29/1981 |
| From: | Hovey G METROPOLITAN EDISON CO. |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| IEB-81-03, IEB-81-3, LL2-81-0146, LL2-81-146, NUDOCS 8106090330 | |
| Download: ML20004D382 (2) | |
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Metropolitan Edison Company m
Post Office Box 480 Middletown, Pennsytvania 17057 Wrtt <'s Direct Dial Number May 29,1981 LL2-81-0146
.f[ '\\ 3,1 M 4;/ TNC Office of Inspection and Enforcement
[N Jblh Attn:
Mr. Boyce H. Grier, Director
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Region I
,7 g,1 U. S. Nuclear Regulatory Coc=dssion
- . u.u g, 631 Park Avenue
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King of Prussia, Pennsylvania 19406
Dear Sir:
Three Mile Island Nuclear Station, Unit 2 (TMI-2)
Operating License No. DPR-73 Docket No. 50-320 IE Bulletin 81-03 This is in response to the suoject bulletin, " Flow Blockage of Cooling Water to Safety Systems Components by Corbicula sp (Asiatic Clam) and Mytilus sp (Mussel)" issued April 10, 1981.
Based on investigations leading to the April 1, 1981 issuance of "An Ecological Study of the Susquehanna River near the TMI Nuclear Station" there has been no evidence of the existence of Asiatic Clam a che vicinity of the TMI Nuclear Station.
Furthermore, from contacts with other downstream utilities, we are aware of the presence of the Asiatic Clam south of the Conovingo Dam which is more than 50 miles downriver.
Therefore, no i= mediate concern exists regarding the presence of the Asiatic Clam in the local waterways in the near term. Contact with downstream utilities will be maintained to monitor upstream migration, if any, of the Asiatic Clam. Additionally, pertinent infor=ation from utilities with experience in dealing with Cirbicula sp is being gathered to maintain a file on control measures and management practices.
With regards to Mytilus sp mussels of the Mytilus sp inhabit marine and estuarine environments. The Susquehan a River in the vicinity of the TMI Nuclear Station is a fresh water habitat and thus will not support
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Mr. Boyc3 H Grict LL2-81-0146 the survival or propagation of these mussels.
Therefore, safety system blockage is not a valid concern at the TMI Nuclear Station.
This constitutes our entire response to this bulletin.
Sincerely,
/
G. K. Hovey Vice-President and Director, IKI-2 GKH:SDC:vjf cc:
L. H. Barrett, Deputy Program Director Dr. B. J. Snyder, Program Director, TMI Program Office
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1Guide to identification of Marine and Estuarine invertebrates, pg. 306
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Gosner
- Kenneth L., Copywrite 1971, Published by Wiley-Interscience, New York.
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