ML19331E052
| ML19331E052 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 08/15/1980 |
| From: | Mattimoe J SACRAMENTO MUNICIPAL UTILITY DISTRICT |
| To: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| Shared Package | |
| ML19331E053 | List: |
| References | |
| 10CFR-050.36AA3, 10CFR-50.36AA3, NUDOCS 8009050339 | |
| Download: ML19331E052 (2) | |
Text
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SACRAMENTO MUNICIPAL UTILITY DISTRICT O 6201 S Street, Box 15830, Sacramento, California 95813; (916) 452-3211 August 15, 1980 Mr. R. 11. Engelken U. S. Nuclear Regulatory Commission Office of Inspection & Enforcement, Region V 1990 North California Boulevard
% 1 nut Creek Plaza, Suite 202 Ualnut Creek, CA 94596 Subj ec t : Docket No. 50-312 1980 Semiannual Effluent Release Report
Dear Mr. Engelken:
In compliance with Technical Specifications " Appendix B".
Section 5.6.1 B and Regulatory Guide 10.1, Revision 1, Appendix A-Item 43, the Sacramento Municipal U:ility District hereby submits its Semiannual Efflaent Reicase Report.
As required in 10 CFR 50.36a (a) (2), this report covers environmental ef fluent releases f roa January 1 to June 30, 1980, inclusive.
For completeness, the data contained in this report follows Regulatory Guide 1.21 and will be resubmitted in our Annual Environmental Operating Report for 1980. General discussions and conc 1tsions within the Annual Report will aumnarize the environmental conditions as required in the Technical Specifications.
Sincerely, hta Y. A J. J. Matticoe Assistant General Manager and Chief Engineer JJM:RWC:ch cs:
- Director, Office of Inspection & Enforcement
- Director, Of fice of Management Information and Progran Control THIS DOCUMENT CONTAINS POOR QUAUTY PAGES 8 0 09050 3M A;4 ELECIPIC f Y :, i t e ; I u v t N.: u c ;f IdAN ta6 c ') 6 I !.
THE hfART Of C A t il l a
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- EFFLUENT 'AND WASTE DISPOSAL REPORT
.s.
t A.
SUPPLEMENTAL INFORMATION Suppicmental information as outlined in Regulatory Guide 1.21 is presented in Table 1.
_ CASE 00S EFFLUENTS
.B.
Caseous _ effluents at ground.-level' release are. summarized in Tabic 1A (Summation of All Caseous Effluents) and Table 1C (Continuous Mode and
-Batch Mode: Releases). No credit is taken for elevated releases and, therefore,. Table IB is not applicabic.
C.
LIQUID EFFLUENTS There were five controlled releases of radioactive liquids during this
- report-period. They are rammarized in Table 2A and isotopic contents are detailed in Table 2B.
The releases occurred f ron January 23 to January 28 and were the result of a small amount of valve leakage into a system that is normally free of radioactivity.
D.
SOLID AND LIQUID WASTE TRUCKED OFFSITE There were no shipments of solid or liquid wastes for off-site burial or 3
disposal during this report period.
E.
RADIOLOGICAL IMPACT ON MAN 4
Liquid Releases Appendix I of 10 CFR 50 requires that the annual doses or dose committments to the total body or any organ of any individual from the sum of the expo-sure pathways from liquid effluents should not exceed 3 mrem and 10 mrem respectively.
Measured plant liquid effluent data was used to calculate estimates of
(
doses to individuals and populations.
Included in the source term vere five (5) liquid batch releases. The total curies released are presented in Section C.
t
" Maximum Individual" and " Population" doses were calculated for a variety of liquid effluent exposure pathways representative of actual or potential I
usage conditions along the plant liquid effluent discharge course.
These pathways include notable water, irrigated food (vegetation, milk and meat),
fish'and direct (recreational) exposures, j
Whenever possible, calculations were based on existing data for the plant f
atul its regional environmental characterisitics.
Where insufficient data j
existed to substantiate plant / site dependent assumptions, the parameters and models recommended in Regulatory Guide 1.109, " Calculation of Annual Doses to tbn From Routine Releases of Reactor Effluents for the Purpose of Evaluating Compliance with 10 CFF. 50, Appendix I",
and 1.113, "Estin-4
- ating Aquatic Dispersion of Effluents from Accidental and Routine Reactor Releases for the Purpose of implementing Appendix I" and the LADTAP computer code were used.
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