ML17193B280
| ML17193B280 | |
| Person / Time | |
|---|---|
| Site: | Dresden, Zion  |
| Issue date: | 03/31/1981 |
| From: | COMMONWEALTH EDISON CO. |
| To: | |
| Shared Package | |
| ML17193B276 | List: |
| References | |
| NUDOCS 8104060766 | |
| Download: ML17193B280 (4) | |
Text
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APPENDIX C ADVEHSE WEATHER EVACUATION
'rIME ESTIMATES ZION S'l'ATION March, 1981
Introduction APPENDIX C ADVERSE WEATHER E.VACUATION
.TIME ESTIMATES
- . This aJ?pendix supplements the "Prelim~nary Evacuation Time Study of the
- . 10..;.Mile Radius Emergericy Planning Zone at the Zion Station".
Presented in this appendix 'is an assessment of the. effect on the previously developed evacuation tirre estimates of adverse* weather considerations.
This assessment *compliments the Preliminary E.'vacuation *rime Study and conform:; to the background, methodology and asswrptions used in it.
Assu11ptions
- The basic 1rethociologies used for this adverse weather evacuation assessment are as discussed in. Appendix A to. the original study.
'I'he adverse weather assessment uses the same evacuatio11
- sectors and evactiation routes as well as the sane number of vehicles to be evacuated as used in the origii1al study.
For this assessment,. the evacuation travel. times associated with the fair weather best estimate evacuation tiires for the general pof?ulation were rrocii.tied to retlect a 30% decrease in roadway capacity due to inclement
. weather
- circumstances.
- The evacuation travel times
- tor special facilities in the original stUciy were 1rodified to reflect a. 30% decrease in:* evacuation* travel speeds due to *inclerrent Weather circumstances.
Thes~ assumptions ha've *the advantage of being able to represent a range of different adver~ weather conditions* -
snow, fog, ice, etc. -
rather
- than just a single Weather scenario.
Results The estimated times for the evacuatibn of the general population dur ihg adverse weather within the 10-mile EPZ around Zion Station are presented in Table C-l.
The. notification and roblization times are tne same as those - used in the
- original *study.
The evacuation travel times were developed assuming a
30%
decrease in *.the traffic* capacity. of the evacuation routes due to adverse weather circumstances.
The estimated evacuation. travel *times for evacuating the special facilities, during adverse* weather, wi.thin the 10-mile EPZ around Zion
- .. Station* are presented in Table* C-2.. The evacuation travel times were
- developed assuming a 30% decrease in the evacuatfon speed used in the original study due to adverse weather circumstances.
C-l
TABLE C-1 ZION_ STATION F.STIMATEo EVACUA'UON TIME OF THE GENERAL FOPULATION DURI-00 ADVERSE WEA'YdER WiTHIN 10 MILES OF 'fiIB ZION STA'rION Estimated Adverse Weather Evacuation Ti.Ire Estimated E.stimated Evacuation.
- Total Estimated Travel Evacuation*
1980..
. Estimated Notification.*
Estimated *
. Ti.Ire.. Adverse
. Ti.Ire Adverse.* *
.. Evacuation*
. Tirre* In Excess.Of...
M::>bilization Weather
\\~ather
... zone/Sector Population 15 Minutes (Minutes)_*
. Tilre: (Minutes)*.-.
- (Hours)
(liours) **.*
~----,.----"-~~----~~~-**--------~~~~----~-"---
0-2 Miles Sector I 0-5 Miles
- Sectors I,_r I Sectors I, I'II 0-10 Miles*
.Sectors I, II~ IV Sectors I, II, V 29,135.
39,015 55,240 145,865 189,090
- See Table 3-1 in original study. _
Rounded.to the nearest hour.
15
- . 15.
. 30 30 45*
20
. 20 *.
20 20 20 6.6
. 6.8 '
7.6 27.9 9.7 This could be reduced to 22 hours2.546296e-4 days <br />0.00611 hours <br />3.637566e-5 weeks <br />8.371e-6 months <br /> by using additional evacuation routes in Wisconsin as discussed in the original study.
7 8
9 29***'
11 e
- zone/Sector
- 0-2 Miles
- . Sector I*
0-5 Miles*
Sectors I,II Sector I,III 0-10 Miles Sectors I, II, IV Sectors I,II,V
. TABLE C-2
- ZIOO STATION SP:OCIAL i'"'ACILITIES -
ESTIMATED EVACUATION 'fRAVEL* 'rIMES DURI~ ADVERSE. WEA1'HER Estimated Evacuation Tirre* (Hours)
Sem.or SChools... Hospitals Day Care Nursing.*
Citizens
.. 0.85..
0.30
. 0.30
- o. 50 0.70
. u.20
.. 0 *. 35.
0.35 0.70
.0.70.
.. 0.15 o *. 3o *
. 0.15
.0.50 0.70 o *. 15 *.
0.15.
0.30.
0.35.
0.70 0.15 0.:30 0.35.
a.so 0~70 Recreation 0.70 0.20 0.20 0.70 0.70
~..
- Vehicle speeds are asslllred to be 14 rrph
- Refer to Table A-3 in original study.