ML19350A916

Fog & Rime Ice Monitoring Program Summary,1980.

ML19350A916
Person / Time
Site:	LaSalle
Issue date:	03/11/1981
From:	COMMONWEALTH EDISON CO.
To:
Shared Package
ML19350A917	List: ML19350A916 ML19354C445
References
NUDOCS 8103170468
Download: ML19350A916 (10)

Text

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00 N Attachment 1 O

Fog and Rime Ice Monitoring Program Summary LaSalle Cour.ty Cencrating Station N

Incidence of Fog / Rime Ice Forination e During 1980 9 249 Days of observations Fcg/ Rise Ice Visibility in Feet (less than Ob arvations Wind 1/4 mile) at Observation Points D-t- Time Direction 1 2 3 4 5 6 7 8 9 Remarks 1-16 4:Or.? 171* 200* 1300 1300 1300 Pond frozen 2-20 6:30A 234' 500 500 200* 500 500 500 Pond 90% frozen 2-21 5:30A 90* 500 1000 1000* 1000 1000 Pond 90% frozen 5-19 7:00A 31* 200* 200* 200 200 200 300 300 300 250*

Dense fog 5 mi. east C-11 7:20A 240* 1400 1400 1400 1000 1000* 1000 700* 800 800 of plant C-1D 7:07A 332' 800* 700 650 800 700 650 700* 750 700 Fog in entire area 8-28 7:06A ** 600 800 800 800 600 600 600 800 800 9-05 7:15A 71* 1300 700 700 750 12-01 4:30P 72* 800 800 800 800 800 Raining 12-31 7:00A 315* 1000 1000 1000 1000 1000 1000 1000 1000 1000*

• Derotes Fog Formation Downwind of Cooling Pond ** Wind direction indicator not working Obs.Pt. Dir. Span Obs.Pt. Dir. Span Obs.Pt. Dir. Span 1 3050- 820 4 900-1610 7 197 -3390 2 , 170- 850 5 90 -2400 8 2780 -351 3 650-112* 6 1880-262 9 286 - 67 (Sie Map on Reverse Side)

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Attachment 2 Sheet 1 ef 4 .

Fog and Rime Ice Monitoring Program Summary LaSalle County Generating Station Incidence of Fog / Rime Ice Formation First Quarter,198_0

_fl Days of Observations Frg/ Rime Ice Visibility in Feet (less than Obs rvations Wind 1/4 mile) at Observation Points 4

Date Time Direction 1 2 3 4 5 6 7 8 9 Remarks 1-15 4:00P 126' Pond frozen 1-16 4200P 171* 200* 1300 1300 1300 "

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2-22 5:30A 288* Pond 80% frozen 3-17 5:45A 342' 3-23 7:10A 63*

8 Denotes Fog Formation Downwind of Cooling Pond Obs.Pt. Dir. Span Obs.Pt. Dir. Span Obs.Pt. Dir. Span 1 3050- 820 4 900-1610 7 197 -339 2 , 270- 850 5 900-2400 8 2780 -351 3 65 -112 6 1880-262 9 286 - 67 (See Map on Reverse Side)

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Fog and Rime Ice Monitoring Program Summary LaSalle County Generating Station Incidence of Fog / Rime Ice Formation Second Quarter, 198_O 62 Days of Observationa Frg/ Rime Ice Visibility in Feet (less than Observations Wind 1/4 mile) at Observation Points Date Time Direction 1 2 3 4 5 6 7 8 9 Remarks 4-2 5:55A 40' Patches of fog 4-3 6:50A 135' Light fog 4-29 6:45A 355' Fog over Pond only 4-30 6:35A 378* Light fog 5-1 6:45A 72* Spots of Grtund Fog 5-2 6:40A 196 N!d 5-13 6:52A 54* Light fog 5-19 7 OOA 31* 200* 200* 200 200 200 300 300 300 250*

5-21 6:55A 354' Light fog 5-29 6:45A 110*  % h h h "'"'I'#

6-25 7:OOA 135' Light fog o Denotes Fog Formation Downwind of Cooling Pond Oba.Pt. Dir. Span Obs.Pt. Dir. Span Obs.Pt. Dir. Span 1 3050- 820 4 900-1610 7 197 -339 2 , 270- 850 5 900-2400 8 278 -351 3 650-112 6 1880-262 9 286 - 67 (Sce Map on Reverse Side)

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Attachment 2 Feg and Rime Ice Monitoring Program Sununary Sh ot 3 cf 4 -

LaSalle Count.y Generating Station Incidence of Fog / Rime Ice Formation Third Quarter, 198_

64 Days of Observations Fog / Rime Ice Visibility in Feet (less than Observations Wind 1/4 mile) at Observation Points

_ Date Time Direction 1 2 3 4 5 6 7 8 9 Remarks 7-23 6:30A 86* Light Ground Fog Dense fog 5 mi. East C-11 7:20A 240* 1400 1400 1400 1000 1000* 1000* 700* 800 800 of Plant C-15 7:30A 90* Light fog 8-10 7:07A 332* 800* 700 650 800 700 650 700* 750* 700 Fog in entire area indicato r 8-28 7:06Aout of o rdet400 800 800 800 600 600 600 800 800 9-05 7:15A 71* 1300 700 700 750

o Denotes Fog Formation Downwind of Cooling Pond Obs.Pt. Dir. Span Obs.Pt. Dir. Span Obs.Pt. Dir. Span 1 3050- 820 4 900-1610 7 197 -3390 2

270- 850 5 900-240 8 278 -351" 3 65 -112 6 1880-262 9 286 - 67 (Sie Map on Reverse Side)

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Attachment 2 Fog and Rime Ice Monitoring Program Susanary ** '

laSalle County Generating Station Incidence of Fog / Rime Ice Formation Fourth Quarter, 198_

61_ Days of observations F g/ Rime Ice Visibility in Feet (less than Observations Wind 1/4 mile) at Observation Points Date Time Direction 1 2 3 4 5 6 7 8 9 Remarks 10-15 7:00A 45* Heavy fog over lake Light fog N&E of sito 10-16 6:58A 192*- Heavy fog over lake 11-26 7:15A 144' Light fog 12-01 fe 30P 72* 800 800 800 800 800 Raining 12-05 7:00A 130* Light fog 12-31 7:00A 315* 1000 1000 1000 1000 1000 1000 1000 1000* 1000 i

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