ML20205N344

Operational Fog & Ice Observation Program Data Summary for Second Quarter 1985

ML20205N344
Person / Time
Site:	LaSalle
Issue date:	06/30/1985
From:	Diederich G COMMONWEALTH EDISON CO.
To:	Jordan M NRC
References
5239E, NUDOCS 8605020096
Download: ML20205N344 (2)

Text

Attachment 2 Page 3 of 4 Fog cnd Rime Ica Monitering Program Summary

_LaSalle County Generating Station Incidence of Fog / Rise Ice Formation I

Third Quarter, 198 5 58 Days of Observations l

Fog /Ritme Ice Visibility in Feet (less than Observations Wind 1/4 mile) at Observation Points Det-Time Direc tion 1

2 3

4 5

6 7

8 9

Remarks General fog over 7-3 7:30a 50*

1200*

1200*

1200 1200 1200 800 800 1200 1200 entire area.

Light fog, no visi-8-5 7:00a 240*

bility restrictions.

Light fog, no visi-8-6 7:00a 200*

bility restrictions.-

General fog over 8-26 7:00a 319' 500*

500 500 500 500 500 500*

500*

500*

entire area.

Light fog, no visi-8-29 7:00a 206*

bility res t ri ct, ions.

Lignt rog, no vasi-8-30 7:00a 324*

bility restrictions.

9-27 7:30a 30*

1000*

1000*

1000 1000 1000 1000 1000 1000 1000 l

~

8605020096 850630 PDR ADOCK 05000

,J

<DR R

o Demotes Fog Formation Downwind of Cooling Pond Obs.Pt.

Dir. Span Obs.Pt.

Dir. Span Obs.Pt.

Dir Spas....

• 1 3050- 828 4

9QA161*

7 197"-339" 8

278*-351' l ;;:- p 2 270- 850 5

90*-2400 3

650-112*

6 1880-262" 9

286 - 67*

(See Map on Reverse Side)

\\

Commonwealth Edison Page 2 of 4 g_ : 72 West Adams Street. Chicago, Illinois

' + '

Address Remy to-Post Offce Box 767 Chicago. Ilknois 60690 0767 August 12, 1985 M. Jordan Senior Resident Inspector LaSalle County Station U.S. Nuclear Regulatory Ceaunission subject: LaSalle County Station Units 1 and 2 Operational Fog and Ice Observation Program (NRC Docket No's. 50-373 and 50-374)

Dear Mr. Jordan:

In accordance with the Environmental Protection Plan, Appendix B.

Section 4.2.2 which is part of the operating license for LaSalle County Station Units 1 and 2 the following is a summary of the data for the second-quarter of 1985 of the operational fog and time ice observations in the vicinity of the cooling pond.

During the second quarter of 1985, there were 63 observation days. During that period there were no occurrences where the visibility was restricted to less than 1/4 mile by fog and there were no occurrences of rime ice.

If you have any questions regarding this matter, please address them to this office.

Sincerely, G. J. Diederich Station Superintendent

(

5239E BBB:GJD:pp cc:

M. J. Oestmann - Region III

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