ML17261A178

Submits Info in Response to NRC 790529 Draft Evaluation of SEP Topic III-2.B,onsite Meteorological Measurements Program.Forwards Upper Air Meteorological Study

ML17261A178
Person / Time
Site:	Ginna
Issue date:	04/11/1980
From:	White L ROCHESTER GAS & ELECTRIC CORP.
To:	Ziemann D Office of Nuclear Reactor Regulation
Shared Package
ML17261A179	List: ML17261A178 ML17261A180
References
TASK-02-02.B, TASK-2-2.B, TASK-RR 800401, NUDOCS 8004150459
Download: ML17261A178 (4)

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ACCESS /ON NBR l 8004150459 DOC ~ DATE; 80/04/11 NOTARIZED:,',.NO,:,,

DOCKEl'ACIL:50-244 Robert Emmet Ginna Nuclear Planti Unit ii Rochester'G 05000244 AUTH.NAME AUTHOR OFF ILI ATI ON HHITEPP.LE Rachest'er Gas tt Electric Corp,

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Reactors Branch 2

SUBJECT:

Submi,tsinfo inresponse to NRC 790529 dra'ft eva'lvation of

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S9 EAST AVENUE, ROCHESTER, N.Y. 14649 LEON D. WHITE. JR.

VICE PRESIDENT TELEPHONE AREA CODE Tld 546-2700 April 11, 1980 Director of Nuclear Reactor Regulation Attention:

Mr. D. L. Ziemann, Chief Operating Reactor Branch 42 U.

S. Nuclear Regulatory Commission Washington, D.C.

20555

Subject:

SEP To ic III-2.B Onsite Meterolo ical Measurements Pro ram Docket; No. 50-244 Gonna Nuclear Power Plant

Dear Mr. Ziemann:

The following information is being provided in response to the May 29, 1979 NRC draft evaluation of SEP Topic III-2.B (Ginna Onsite Meteorological Measurements Program).

Based upon our review of several site-specific factors, and regional meteorological

data, we conclude that, appropriate estimates of atmospheric dispersion are obtainable without relocating the existing Ginna tower, or establishing a second tower farther inland.

Our rationale is provided below:

Elevated release conditions A plant effluent plume would behave as an elevated release only under conditions where wind speeds were very low and the plume from vents near the containment fascade escaped the building wakes.

Low winds (below three m.p.h.) occur less than 5% of the time from directions that would carry the plume over land.

Upper level measurements from the present.

tower would properly estimate wind speed direction and turbulence since the level is near any point of release and above the turbulent internal boundary layer (TIBL) that would exist.

We would propose to use an appropriate dispersion model incorporating TIBL effects to predict, ground level concentrations downwind based on knowledge of lake and air temperature, time of day, and wind speed.

No other data from another inland tower would significantly enhance the accuracy of such calculations.

POZS

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