ML19329A174
| ML19329A174 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 01/07/1977 |
| From: | Hulman L Office of Nuclear Reactor Regulation |
| To: | Grimes B Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7912300202 | |
| Download: ML19329A174 (2) | |
Text
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MEMORANDUM FOR: Brian Crirees, Chief. Environmental Evaluation Eranch, DOR PROM:
L. C. En1 man, Chief, Hydrology-Meteorology Branch, DSE
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SUBJECT:
RESPONSE TO LICENSEE'S COMPUTATIONS OF OCONEE WASTE DISCHARGE f
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i PLANT NAME: Oconee Units 1, 2 and 3 j
DOCKET NUMBERS: 50-269, 50-270, 50-283 TAC NO.: 4250 DATE REQUESTED: January 7, 1977 l
5 he Hydrologic Engineering Section has reviewed the licensce's t
submittals concerning the dilution of chemical waste discharges at tM Oconee site. We have been unable to complete our evaluation blase the data required for an independ.:
- evaluation are missing, and the licensee's explanation of his avn proet 'ures is highly 4
inadequate. %e licensee must prepara a rempor.se to our comments before the review can proceed. This zeview was performed by R. Codell and is suenarized in the enclosure.
L. G. Ilulman, Chief Hydrology-Meteorology Branch Division of Site Safety and Environmental Analysis
Enclosure:
As stated DISIRIBUTION:
DOCKET FILE (50-269,270,283) cc w/o encl:
R RDG V. Stello RDG u
I DG D. Eisenhut P. Shuttleworth r
cc w/ enc 1:
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Comm2nts on Waste Dischrrgs Dilution at Oconee The Duke Power Company (licensee) proposed an amendment to the Nonradiological Environmental Technical Specifications (ETS) for Oconee Units 1, 2 aud 3, which would a?. low the upper limit of pH of the effluent discharged to the tailrace of Keowee Dam to increase from 8'.5 to 9.0.
At the staff's request, the licensee provided some com-i putations showing that the discharged chemical waste would be. diluted to a low concentration in the ambient waters of the Keowee River within a short distance from the point of discharge.
1 We attempted to perform an independent confirmation of the licensee's i
results, but found the necessary data lacking; the licensee's presen-tation of his own method is so obscure that it is virtually worthless.
l So that we may be able to perform an independent anahais of cha=f e=1 i
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t waste dilution, the licensee should satisfy the following requests:
1.
Provide a useable drawing or engineering representation of the i
release configuration, including the tail race, discharge pipe, l
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and any other physical structures affecting the dilution and dis-persion of the waste;
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2.
Provide representative and extreme flowrates and ranges of the waste stream, the flow through the tail race, the flow in the Keowee River, and any other flows affecting the dilution and dispersion; 3.
Provide representative and extreme concenrrations of discharged chemical wastes.
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