ML20065K121

Special Rept 90-014:land Use Census Identified New Location Yielding Calculated Dose Greater than Tech Spec 4.11.2.3 Limit.Odcm Will Be Revised by 901214 to Include New Location & Dispersion Coefficients

ML20065K121
Person / Time
Site:	Summer
Issue date:	10/30/1990
From:	Slolds J SOUTH CAROLINA ELECTRIC & GAS CO.
To:	Ebneter S NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
SPR-90-014, SPR-90-14, NUDOCS 9011150202
Download: ML20065K121 (2)

Text

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. Jenkinsville. SC 2906$

' Nuclear Operations -

-(803) 345-4040 -

'SCE&G October 30,1990 k _ g', d-818.05 & 818.08 Mr. S. D. Ebneter Regional Administrator U. S. Nuclear Regulatory Commission Region ll, Suite 2. 900 101 Marietta Street, N. W.

Atlanta, GA 30323

Subject:

VIRGIL C. SUMMER NUCLEAR STATION (VCSNS)

DOCKET NO. 50/395 OPERATING LICENSE NO.NPS i SPECIAL RE? ORT (SPR 90 01%

This Special Report is being submitted by' South' Carolina Electric & Gas Company _

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(SCE&G) pursuant to the requirements of Action (a) of Technical Specification 3.12.2,:

" Land Use Census." This act. ion statement requires SCE&G to submit a Special Report.

when a land use census identifies a-new location:which yields a calculated dose or; dose commitment greater than the values currently being calculated _in Specification--

4.11.2.3, " Dose Calculations." The new location, being reported.in this letter, is a' residence with a garden which-was constructed subsequent >to the' land census!

performed by SCE&G in 1989.

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Previously, the maximum exposed individual (MEI) was assumed to' reside in the' East Southeast (ESE) sector at 1.1 miles (vegetation pathway)f 2;2E;6 s/m3 and 8 4 with an annual ~ average R70 (relative concentration) and D7Q (relative deposition) o H

respectively. The new location is in the East E) sector at 1,1Lmiles (vegetation pathway) ly and yields a calculated dose approximately 40% higher than the with an annual average R7Q and

.of 2;2E-6 s/m3:andi1.2E-8 m 2,-

respective MEl. However, experience with effluents at the Virgli C? Summer Nuclear Station (VCSNS) during 1990'shows _that..the calculated 140% ? increase -in org)

Radioiodinet 'a dioactive Materials in Particulate Form, and Tritium."-

a The Envirov c tal. Monitoring Programl(EMP) for VCSNS' currently l monitors lai garden in the i:SE sector at 1 mile which yields a: calculated doselwithin 7% of the; dose calculated at the new MEl locationi Therefore, no changes to the EMP are:

required to maintain compliance with Action (b) of Technical Specification 3.12.2.1 i

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D Mr. S. D. Ebneter October 30,1990 '

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818.05 & 818.08

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.1 SCE&G will revise the Offsite Dose Calculation Manual (ODCM) by'. December ' 4,.

1 1990, to include the new location of the MEl and the new dispersion coefficients, j

Should you require any additional information, please call at your convenience.-

1.

Very truly youre

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John L. Skolds.

CJM:JLS: Icd j

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O. W. Dixon, Jr./T. C. Nichols, Jr.

1 E. C. Roberts R.V. Tanner General Managers

- G. F. Wunder 4

C. A. Price NRC Resident inspector J. B. Knotts, Jr.

3 Marsh & McLennan Document Control Desk j

INPO Records Center ANI Library a

NSRC NPCF A

RTS (ONO 900102) i

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j NUCLEAR EXCELLENCE LA ' SUMMER TRADITIONI.

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