ML20009D837

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Responds to IE Bulletin 81-03 Re Asiatic Clam (Corbicula Sp).Corbicula Present in Monticello Reservoir.No Indication of Sys Infestation.Monitoring Program Will Be Supplemented by Periodic Visual Insp
ML20009D837
Person / Time
Site: Summer 
Issue date: 07/09/1981
From: Nichols T
SOUTH CAROLINA ELECTRIC & GAS CO.
To: James O'Reilly
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
IEB-81-03, IEB-81-3, NUDOCS 8107240403
Download: ML20009D837 (2)


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SOUTH CAROLINA ELECTRIC's GAS COMPANY nost orne.z son' 7e4 Cotuus:A, south CARoWNA 29288 (y

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JUL 2 31981-1 Mr. James P. O'Reilly, Director

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U. S. Nuclear Regulatory Commission g<

comissioN Region II, Suite 3100

/ gif, s N' 101 Marietta Street Atlanta, Georgia 30303

Subject:

Virgil C. Summer Nuclear Station Docket No. 50/395 I&E Bulletin 81-03

Dear Mr. O'Reilly:

South Carolina Electric and Gas Company has reviewed IEB 81-03 and hereby submits the following in response to the concerns therein:

1.

Attachment I to this response is submitted to demonstrate-that'the asiatic clam (Corbicula, sp.) is present in the Monticello Reservoir.

They have been collected as part of the regular environmental monitoring program conducted by Dames and Moore.

2.

We are in the process of conducting an open and inspect program of a representative sample of system components per the provi-sions of IEB.

So far, there is no indications of system infes-tation.

Expected date for completion is Septembcr 1, 1981.

3.

Due to the presence of Corbicula in the reservoir as well as to the potential of flow' blockage from other sources, SCE&G will implement a program of flow. monitoring on safety-related system componer This monitoring program will be supplemented by a program of visual inspection to be conducted per.iodically.

A followup report will be submitted at the conclusion of the inspection program l

and any corrective and preventive actions will be identified as required.

Should you have questions concerning this matter, please contact us.

I declare the statements and matters set forth herein are true and correct to the best of my knowledge, information and belief.

Very truly yours, T. C. Nichols, Jr.

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Attachment

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See page 2 8107240403 810709 PDR ADOCK 05000395 G

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g-6 Mr. James P. O'Rt, illy Page 2 I&E Sulletin 81 03 cc:

V.C. Summer G.H. Fischer H.N. Cvcus T.C. Nichols, Jr.

0.W. Dixon, Jr.

D.A. Nauman W.A. Williams, Jr.

R.B. Clary O.S. Bradham A.R. Koon A.A. Smith H. Radin M.N. Browne H.E. Yocom g j v [V 43 B.A. Bursey Dr. J. Ruoff

'J.L. Skolds J.B. Knotts, Jr.

I&E (Washington)

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TABLE 1 Mean Annual Densities (Number per square meter) of the Asiatic Clam (Corbicula, sp.) at

. Collecting Stations Year Location Station 1978 1979 1980 Parr Reservoir 3

74 261 635 C

23 226 541 D

56 79 114 Subimpoundment H

NP NP NP Monticello Reservoir I

NP NP NP J

NP NP 14" K

NP NP 14 c

L NP 28 103 d

M NP' 197 545 N

NP NP 107 c

0 NP NP 229 Neal Shoals P

NP 16 93

" Collections are required quarterly; organisms present during each sampling period except where noted.

Not present in collections.

" Collected ~twice during the year.

-dCollected four times during the year.

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