ML19329D418
| ML19329D418 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 07/17/1973 |
| From: | US ATOMIC ENERGY COMMISSION (AEC) |
| To: | |
| Shared Package | |
| ML19329D409 | List: |
| References | |
| NUDOCS 8003060793 | |
| Download: ML19329D418 (2) | |
Text
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SUPPL 12! ENTAL TESTIMONY c) g TO FINAL ENVIRONMENTAL STATEMENT y
l related to conutruction of, llIgg j
DAVIS-BESSE NUCLEAR POWER STATION l
TOLEDO 1:DISON CO:!PANY and I
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CLEVELAND ELECI'RIC II.LU:!INATING CO*1PANY wnsit
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Docket No. 50-346
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Issue 6 (a
Our evaluation of the radioactive waste systems in a nuclear power plant is based on a model that is consistent for a generic type plant.
The model utilizes data developed f rom a revicw of available informa-tion from operating nucicar power plants.
Our analysis of the radioactive waste systems assumed the following Icaks and sources:
Primary to Secondary leak in steam generator 20 gpd Primary leak to Auxiliary Building 20 gpd l
Primary leak to Containment Building 40 gpd Sample drains 35 gpd TOTAL 115 gpd The liquid source term actually calculated using these flow rates was 0.15 Ci/yr. To compensate for equipment downtime, expected operational occurrences, and equipment degradation over the 40 year life of the plant, this source term was normalized to 5 Ci/yr.
This value is approximately 33 times greater than the calculated value and is equivalent to a value calculated using a total leakage flow of 3833 gpd rather than 115 gpd.
8003060 793
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The following total primary system leakage rates have been measured
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in operat Ing pret.suri::ed water reactor plants:
Facility Leakage gpd Point Beach 461 lladdam Neck 288 Yankee Rowe 145 San onofre 433 The 1cakage flow of 3833 gpd that corresponds to our normalized liquid source term of 5 C1/yr as reported in Table 3.4 of the Final Environmental Statement is from 8 to 26 times greater than the leak i
rates reported for the plants listed in the above Table.
Thus, a substantial margin over measured leakage rates is availabic to com-pensate for equipment degradation, operational upsets, etc.
While operational occurrences and equipment degrad.ition may be
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expected to occur during the life of a plant, the effects of these are expected to be minimized through normal maintenance procedures.
Such procedures adjust, repair, or replace equipment as necessary to maintain the efficient operation of the systems in the plant.
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