ML17193B279
| ML17193B279 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 03/31/1981 |
| From: | COMMONWEALTH EDISON CO. |
| To: | |
| Shared Package | |
| ML17193B276 | List: |
| References | |
| NUDOCS 8104060760 | |
| Download: ML17193B279 (5) | |
Text
. 81040607&0 APPENDIX C.
ADVERSE WEATHF.R C.VACUATIOO TIME ESTIMATES DRESDEN STATIOO March, 1981
Introduction APPENDIX C ADVERSE WEATHER EVACUATIOO TIME ESTIMATES
- This appendix supplements the "Preliminary I:.Yacuation TiiiE Study of the 10-Mile. Radius Emergeocy Planning Zone. at the Dresden Station".
Presented i.r1 this appendix is. an as5essment
- of the effect on the previously developed
- evacuation time estimates of *adverse weather considerations.
This assessment compliments the Preliminary Evacuation Time. Study and conforms to the background; methodology and. asslllTptions used in it~
Assunptions The basic. irethodologies used for this adverse. weather evacuation as5essirent are as disclissed in Appendix A to the original study.
The*
adverse weather assessment uses the sane evacuation sectors ** arid*. *
- evacuation routes as well as the
- sane number of veh.lcles to be evacuated as used in the or ir::J inal study.
For this assessirent, the evacuation travel times associated with the fair
\\.Yeather. best estimate evacuation times for the general population wer~
. rOOciified to. reflect a 30% deerease in roadway capacity due to tncleirent weather circwn5tances.
The evacuation travel tines for special facilities in the original, study were m:xlified to reflect a 30% decrease in. evacuation travel* speeas due to. incleirent weather cii:cumstances.
These assumptions have the advantage of being able. to represent a range of different adverse weather conditions -
- snoW, fog, ice, etc. -
rather than just a single weather scenario.
Results The.estimated.times for the. evacuation of the general. population during adverse Weather within the 10-mile EPZ around Dresden Station are presented in Table C-1.
The notification and m:>blization times are the.
sarre as
- those used. in the original study.
The evacuation. travel times were develof)ed assuming a 30% decrease in the traffic capacity of the evacuation routes due to adverse we~ther circumstances.
The estimated evacuation travel. times for. evacuating
.the special facilities, during adverse weather, within the 10-mile EPZ around Dresden Statibn are presented in* Table C-2.
The evacuation travel times were develoPed assuming a 30% decrease in the evacuation speed used in* the original study due to adverse \\i.'eathercircumstances.
C-1
0...:2 Miles
. *.3ector I
. sector II o-5 Miles sectbrs I.;i:II.
- sectors I,VII
- sectors II,IV sectors I I, v.
- SeCtors II,VI
. TABLE C-1.
DRESDEN STATION FS'fIMATED EVACUATION TIME OF T"rlE GENERAL POPUI.ATION DURIN3 ADVERSE WEA'I'HER WITHIN 10 MILES OF.THE DRESDEN STATION Es.timated 1980 Evacuatfori Populat:Jon 910 Estl.lllated Adverse Weather Evac.uat1on. TDre
- Estimated Notification
- Tine In Excess Of 15 Minutes *(Minutes)*
. 15-30 15-30 Estimated.
M::>bilizatiori Tine (Minutes)
- 20
- 20.
Estimated.
Evacuation Travel Tine Adverse
. Weather (Hours) 7.6
. Estirna ted Total Evacuation Time Adverse
'. Weather
- (Hmirs) **
6
. 9.
- See Table 3-1 in original study.
- Rounded to the nearest hour.
{._
1' '*
TABLE C-,1. (continued).
.
- DRESDEN sTATION Es*rrMATED EVACUATION '.l'IME OF THE GENERAL FOPUIATION DURit-K; ADVERSE WFATHER wr*rnrN 10 MILES OF THE DRESDEN STAT!~
Estimated Adverse Weather Evacuation Tim:!
Zone/Seetor.
- 0-10 Miles Sectors IiIII,VlII Sectors I,VII;XII
- Sectors II, IV,JX Sectors II, V,X
- Sectors II,VI,XI Estimated
.*1980**
Evacuation Poi)ulation 13,920 11,850
- 10,690 4,380 7,920.
- Estimated Notification Tine In Excess.of 15 Minut~s (Mim.ites)~ ~
15-30 15...:30 30-45 30-45 15-30 See Table 3-1 in original study~*
Rounded to the nearest hour.
. Estimated z.bbilizatfon.
Tine (Minutes)*
. 20*
....
- 20 20 20 20 Estimated Evacuation Travel
- Ture Advei::se weather
- (Hours)..
- 6.3 7.4 8.1 8.9 9.3 Estimated Total Evacuati6n Tiine Adverse Weather** *
.. *. (Hours)**.*
7 8
9 10 10
Zone
. 0-2 Miles*
0-5 Miles*
0-10 Miles
- e TABLE C-2 DRESDEN STATION SPB:IAL FACILITIES ~ ESTIMATED EVACUATION TRAVEL TIMES
.: DURI~ ADVERSE WEATHER Schools 0.60 Estimated Evacuation Tinte* (Hours)
Hospitals*
Day Care 0.45..
0.30 0.45 0.30 Senior
- *
- Nursing.*
Citizens
.*. 0.15.*
.. 0.15 0.15 0.15 0.15 0.15 Recreation 0.85.
- *vehicle speeds are assumed to be 14 aph -*Refer to Table A~4* ih original study.
\\.