ML19326B116
| ML19326B116 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 08/24/1973 |
| From: | US ATOMIC ENERGY COMMISSION (AEC) |
| To: | |
| Shared Package | |
| ML19326B114 | List: |
| References | |
| NUDOCS 8003060919 | |
| Download: ML19326B116 (2) | |
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y SUPPLD! ENTAL TESTI !O:A' y
,q-y.g TO FINAL E: VIRO. IENTAL STATDIE!;T jj -
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b.r,5.'a73;' C related to construetion of O
DAVIS-BESSE UUCLEAR P0".'ER STA I
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TOL1:D0 EDISON CO:!PANY and CLEVELAND ELECTRIC ILLUMINATI::C C0;tPANY N/"3
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k Docket No. 50-346 Issue 6 Our evaluation of the radioactive vaste systems in a nuc1 car power plant is based on a model that is consistent for a gencric type plant.
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j-The model utill:es data developed from a revicw of availabic informa-tion from operating nuclear power plants.
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.Our analysis of the radicactive vaste systems assumed the following i
I Icaks and cources:
Prinary to Secondary leak in stcan generator 20 gpd I
Primary Icak to Au.xiliary Building 20 gpd l
Primary leak to Containment Building 40 gpd y
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Sample drains 35 rpd
.f, TOTAL 115 gpd
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The liquid'scurce tera actually calculated using these flow rates
-was 0.15 Ci/yr.
To compensatc for equipacnt downtite, c::pected operational occurrences, and equipment degradation over the 40 year s-life of the plant, this source tcrn uns normalized to 5 Ci/yr.
This value is appro>:inately 33 times greater than the calcu]ated value and l
in eqtr[ valent to a value calculated usinn a total ]cahnr.n flow of l
m m
3S33 ged rather than 115 -
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The following total pricary system Icakage rates have been measured in operating pressurized water reactor plants:
Facility Lenkare cod
~ Point Beach 46'1 11addam Neck.
288 Yankcq Rowe 145 San Onofre 433 The Icakage flow of 3333 gpd that corresponds to our nornalized liquid source tera of 5 Cihr as reported in Tabic 3.4 of the Final
~ ' Environmental Statement is fron 8 to 26 tices greater than the Icak rates reported for the plants listed in the above Tabic.
Thus, a j
substantial cargin over measured Icakage rates is available to com-l pensate for equipment degradation, operational upsets, etc.
Uhile operational occurrences and equipment degradation may be r
expect ed to occur during the life of a plant, the effects of thece are expected to be minimized through normal maintenance procedures.
Such procedures adjust, repair, oi replace equipnent as necessary to maintain the efficient operation of th'c systems in the plant.
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