ML19329E012
| ML19329E012 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 10/31/1967 |
| From: | SACRAMENTO MUNICIPAL UTILITY DISTRICT |
| To: | |
| References | |
| NUDOCS 8004090578 | |
| Download: ML19329E012 (3) | |
Text
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4 Docket 50-312 Amendment No. 1 February 2, 1968 h(
APPENDIX 2F METEOROLOGICAL STATION
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The Rancho Seco meteorological program was briefly discussed in paragraph 2.3.4.
To implement this program efficiently and meaningfully, a per-manent meteorological station will be constructed at the site.
This weather monitoring and recording system will be a permanent instal-lation consisting of a 200-foot meteorological tower instrumented to provide continuous long term measurements of the wind, standard deviation, and temperature.
Specifically, the system will sample compute and record the wind speed, wind azimuth angle, wind elevation angle, the standard deviation of the wind azimuth and elevation angles, and the atmospheric dry-bulb and wet-bulb temperatures.
The sensing elements will be located at 3 levels as follows:
200-Foot Level (Top of Tower)
Wind speed (S)
Horizontal wind direction (D )
H Temperature (T200) 50-Foot Level k' s,/
Wind speed (S) m Horizontal wind direction (D )
Vertical wind direction (Dy)g Temperature (T50) 6-Foot Level Temperature (T )
6 Temperature (Twb) 1 The instrument operating range, accuracy, resolution and display record will be as follows:
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r Parameter Range Accuracy Resolution Displac Record S
0-75 mph f 1 mph 1 MPH instantaneous D
0-359 (540 Format) 1 3.6 1
instantaneous g
D
+ 60 f2 1
instantaneous y
H 0-45 f 37. F.S.
0.45 running average V
0-20 f 37. F.S.
0.15 running average T200-T6
-4 to + 20 F 0.5 F 0.1 F instantaneous T50-T6
-3 to + 15 F 0.5 F 0.1 F instantaneous T
25 F to 115 F 31F 0.1 F instantaneous 6
T 10 F to 80 F i1F 0.1 F instantaneous wb To account properly for the meandering effect of the wind, the standard deviation will be computed over a period of one hour.
To achieve this cad successive 3-minute non-overlapping data gathering system will be provided.
To simplify data reduction, a digital on-line data acquistion syst em will be installed.
The acquired data will be averaged by the standard deviation 3
(e ) meters and continuously recorded.
Data reduction will proceed on at
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monthly intervals.
The recorders will be temporarily located in a weather-proof shelter near the base of the tower until indoor facilities become available.
Eventually, all recorders and electronic devices will be moved to the station control room.
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2F-2 Amendment 1