ML17193B278
| ML17193B278 | |
| Person / Time | |
|---|---|
| Site: | Dresden, Quad Cities  |
| Issue date: | 03/31/1981 |
| From: | COMMONWEALTH EDISON CO. |
| To: | |
| Shared Package | |
| ML17193B276 | List: |
| References | |
| NUDOCS 8104060756 | |
| Download: ML17193B278 (5) | |
Text
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81~4oso756 APPENDIX C ADvERsE WFATHER E.VACUATION TIME ESTIMATES QUAD CITIES ST~fION March, 1981
.. ~..
Introduction APPENDIX C ADVERSE WEATHER t.VACUATICN
. TIME ESTIMA'IBS This
- appendix supplements the * "Preliffiinary Evacuation Time Study of the 10-Mile Radius Elretgeocy Planning Zone at. the Quad *Cities Station".
Presented in this appenctix is an * ~ssessrrent of tne etf ect on the previously developed evacuatiOn t~ *estimates of adverse weather considerations.
This assessment compliments the* Preliminary Evacuation Tirne Study and conforms to the background,. methodology and asswtptions used in it.
ASSLlllEtions The *.basic methodologies used for this* adverse weather evacuation ass~ssrilent are as discussed
- in Appendix A to. the. original. study.
The adverse weather assessment uses the: same* evacuation
- sectors and evacuation routes as well as the sane number of vehicles to be' evacuated as used in the.original study.
For. this assessment, the evacuation travel *times associated with the fair weather. best estimate evacuation* times *for.the general. population were mxiified to reflect a.30% decrease in roadWay capacity due. to inclement weather circumstances.
The evacuation travel. times for. special facilities in.the original study were IOOC.lified to x:eflect a 30% decrease' in evacuation travel. speeds due. *to
- incle!'rent weather circwilstances.
These assl.Jrnptions have the: advantage of being.. able to represent a range of different adverse weather.conditions -
snow~ fog, ice, etc..:.. rather than jl.lst a single*. weather* see*nario.
Results The estimated times for the evacuation of the general pcipulation during adverse weather within the 10-mile EPZ around Quad Cities StatiOn are presented in Table C-1.
- The notification arid noblization times *are the
- 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. tifnes for> ev~cuating the special
. f ac ili ties, during adverse weather, within the 10-mile EPZ around Quad Cities Station are presented* in Table c-2~
- The evacuation travel times were* developed assuming a 30% decrea5e ** in the evacuation speed used in thE! original study due to adverse weather circumstances.
c-1
TABLE C-1 QUAD cirIES sTATI0N E.5'1'IMATED l!.VACUATION 'rIME OE'. THE GENERAL POPULATION DURING ADVERSE WEATHER WI'l'HIN 10 MILES OF THE QUAD C.ITIES STATIOO Estimated Adverse Weather Evacuation Time
- Estimated Estimated Evacuation Total Estimat~
. Travel Evaeuation 1980 Estimated Notification Estimated Time Adverse Time Adverse Evacuation Time In 'Excess Of
~bilization Weather Weather Zone/Sector Population
- 15 Minutes (Mi11utes)
- Time (Minutes)*
(Hours)
(Hours)**
~~~~~~~~~~~----"--~~~~~~~----"-
0-2 Miles
. SeCtoi. *I.
' '45 Sector II
'. 995 0-:-5 Miles Sectors I,v
.1, 350 Sectors !,VI 3;115 sectors II,iII
- J,560 Sectors II~ IV
- 2,200
- ~
Table 3-1 in original study.
- .. Rounded to the nearest hour~
20 2.3 3
60 5.2 7
90 20 7.3 9
70 20 8.3 10
- 85.
20 8.6 11 100 20 6.5 9
e
'l'ABLE C.;...l (continued)
.QUAD.CITIES.STATION
. L::~*1*11vU\\'I'ED EVACUA'rION 'rIME OF THE GENEf~. PGPUIA'I'ION DURING ADVERSE wEATHER WITHIN 10 i'1ILFS
... OF. THE. QUAD crrrns.S1'ATICN.
Estimated Adverse Weather Evacuation Time 0-10 Niles.
- Estimated 1980 Evacuation Population
. ----=-------.--*.---------'-___.---:-----
Sectors I, V, IX S,310 Sr~r.ors I, VI,X 47,925
- )*::-:::::.Jrs TI, III, VI 2, 3.60 se.:::t*)i:s H,lV,VIII 8~115.
Estimated Notif ica:tion
'i'ime In Excess Of
- 15 Minutes (Minutes)*
100
.95
. 110
. 85
- . See Table 3-1 in *original study.
- ** Rounded.. to the nearest hour.
- Estimated Mobilization*
Ti.rra: (Minutes)*
Estimated
- Evacuation Travel Time Adverse
.Weather (Hours)
Estimated*
Total Evacuation Time Adverse Weather (Hours)**
20 20
- 20 20 9.4 14.3 9.8.
8.9
- 12.
16 12 11
'rAHLE C-2 QUAD crrrn.s 'S'fATION,*'
SPEX:IAL FACILITIES' F.s'rI~rED 'INACUATION *r.RAVEL TIMES DURit-.G ADVERSE WEATHER Maxiinurn Travel Facility Type
. Distance (Miles)
- School 8.5 Day Care*
2.4 Recreation Area
- 5.0 Estineted Travel Tii~* (Hours) 0.60' 0.20 0.35
- Based on an assumed 14 nph. travel speed.:.. Hefer *to Table A-4 in original study.