ML19312C731
| ML19312C731 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 09/18/1969 |
| From: | Ross D US ATOMIC ENERGY COMMISSION (AEC) |
| To: | US ATOMIC ENERGY COMMISSION (AEC) |
| References | |
| NUDOCS 7912190940 | |
| Download: ML19312C731 (2) | |
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September 18, 1969 To Files THRU:
Charles G. Long, Chief, Reactor Project Branch No. 3,, ~
Division of Reactor Licensing PHONE CALL FROM DUKE POWER COMPANY, OCONEE, DOCKET NOS. 50-269, 50-270, AND 50-287 Messrs Paul Barton and Charlie Dewey of Duke Power callec' September 16, 1969 to discuss current efforts on meteorological measurements.
Irwin Spickler, Bob Waterfield, and Denny Ross were on the lire for DRL.
They have classiS :d pole data with tower data for the June to October '_)67 period and.have reduced the data to a matrix showing 150 foot tower inversion strength versus calms and various wind speeds (in meters per second) of 3228 observations, 1108 inversions (32%) were evident.
The table shows 48.46% of these inversions were 1-2 F, 75.44% of the observed inversions had a strength between 1 and 4, and 90.25% of the inversions had a strength between 1 and 6 degrees. Only 2.07% had inver-sion strengths greater than.80 F.
In terms of wind speeds for all 1108 observations 6 observations were calm, 21 were 0.5 m/s,130 were 1 m/s, 56 were 1.5 m/s, 23 were 2 m/s.
The above were for inversions of 1.
For 40 inversions, 8 cals; 21, 0.5 m/s ; 70,1 m/s; 20,1.5 m/s ; 12, 2 m/s.
For 60 inversions, 52 observations were calm, 165 were 0.5 m/s, 551 were 1 m/s,191 were 1.5 m/s, 76 were 2 m/s, and 40 were 2.5 m/s. The wind data were taken f rom the ground level pole and the inversion temperature AT data were taken f rom the tower.
In connection with a question about pole AT or tower AT versus thernographs, Charlie Dewey stated they were correlating wind data, pole versus tower, but results were not yet in.
They are now getting printout of all tower data of August 1967, 1968, and 1969 looking for changes due to site developments. Charlie Dewey stated they are starting their smoke test development program. They have a photographer, flood lights, Very pistols, parachute flares, and intend to obtain both qualitative and quantitative results. They will analyze 1-hour wind-speed traces to get og from the chart and will estimate
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wind range (in direction)
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To Files 2
September 18, 1969 they will find o from curves in Meteorology and Then knowing c9 Havingplots.ofd,,c a.versus og, they will interpolate z
Atomic Enerav.
c y
as necessary perhaps go to 1 1k degree to get an interval value and then perhaps a plot of og versus c.
In general, it appears that they are do-y ing extensive meteorological ' evaluation at present. Duke would like to have an informal meeting on their meteorological program with us some time before the end of September.co discuss their plans for evaluations for measurements they are programming for the month of October.
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D. F. Ross Reactor Project Branch No. 3 Division of Reactor Licensing
- 2. S. Boyd A. Schwencer R. Waterfield I. Spickler P. Howe RFB-3 Reading Orig: DFRoss l
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