ML19257B629
| ML19257B629 | |
| Person / Time | |
|---|---|
| Site: | 05000516, 05000517 |
| Issue date: | 12/26/1979 |
| From: | Grimes B Office of Nuclear Reactor Regulation |
| To: | AFFILIATION NOT ASSIGNED |
| Shared Package | |
| ML19257B627 | List: |
| References | |
| FOIA-80-360 NUDOCS 8001180011 | |
| Download: ML19257B629 (4) | |
Text
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'g NUCLEAR REGULATORY COMMISSION 3
.E WASHINGTON, D. C. 20555
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December 26, 1979 APPLICANTS FOR CONSTRUCTION PERMITS AND LICENSEES OF PLANTS UNDER CONSTRUCTION Gentlemen:
SUBJECT:
REQUEST FOR INFORMATION REGARDING EVACUATION TIMES This letter is being sent to all applicants for construction permits, and licensees of plants under construction. The purpose of the letter is a request for information regarding estimates for evacuation of various areas around future nuclear power plants. The requested information is in addition to that requested by the November 21, 1979, letter to all applicants for an operating license and licensees of plants under construction from Domenic B. Vassallo, Acting Director, Division of Project Management, Office of Nuclear Reactor Regulation.
Although evacuation time estimates are expected to be prepared in the course of the upgrading of the state of emergency preparedness as previously specified submission of these estimates to the NRC is being requested on an accelerated time scale so that the NRC can identify those instances in which unusual evacuation constraints exist and special planning measures should be considered.
In some cases of extreme difficulty where a large population is at risk, special facility modifications may also be appropriate. The information requested in the enclosure should be submitted no later than March 31, 1980.
Previous correspondence indicated that efforts to develop a model plan were continuing.
It now appears that the model plan will not be completed on a schedule which will be of use in developing upgraded plans in the near term.
The upgraded plan development should therefore proceed on a site-specific basis.
Sincerely,
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Brian K. Grimes, Director Emergency Preparedness Task Group Office of Nuclear Reactor Regulation
Enclosure:
Request for Evacuation Time Estimates 7% 075 cc w/ enclosure:
Service Lists 8001180 0//
Enclosure l
REQUEST FOR l
EVACUATION TIME ESTIMATES (AFTER NOTIFICATION)
FOR AREAS NEAR NUCLEAR POWER PLANTS l
Background
Prior to recent NRC requests that means for prompt notification to the public be installed around each nuclear power plant site, a significant component of evacuation time estimates was the time required to notify the public of a need for evacuation.
Studies of actual evacuations that have taken place generally do not distinguish between the time required for notification, the that an evacuation has taken place.gtion, and the time required to confim time required to implement the evac The estimates for time required for j
evacuations now requested relate primarily to the time to implement an evacuation as opposed to the time required for notification.
These estimates i
may be based on previous local experiences (e.g., enemical spills or floods) 3 or may be based on studies related to population censity, local geography and road capacities. No standard method for making such estimates is identified for use at this time.
The basis for the method chosen should be described in the response. As a check on the evacuation time estimates, coments on the time estimates made should be obtained from the principal local officials responsible for carrying out such evacuaticns.
Such coments should be l
included in the submittal.
The format given below is appropriate for reporting to the NRC estimates of the time required to implement evacuation of areas near nuclear power plants.
These estimates, are to be made for the primary purpose of making available, to those officials who would make evacuation decisions in an emergency situation, knowledge of the time required to complete one of the protective action options (evacuation) available for a particular potentially affected segment of the population.
A second purpose of these estimates is to identify to all concerned those instances in which unusual evacuation constraints exist ano that special planning measures should oe consioereo.
In some cases of extreme difficulty where a large population is at risk, special f acility modifications may also be considered.
Given a decision to evacuate rather than shelter in an actual event, fewer or more sectors or different distances than given in the reporting format might be evacuated should this be the chosen protective action.
For example, three 22-1/2* sectors might be initially evacuateo in a downwind direction (the sector containing the plume and an adjacent sector on each side), followed Dy the evacuation of other sectors as a precautionary measure.
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-1/Hans, J. M., Jr., and T. C. Sell,1974 Evacuation Ri sks - An Evaluation, U. S. Environmental Protection Agency, llational Environmental Research Center, Las Vegas, EPA-:520/6-74-002.
. Format for Reporting Information The areas for which evacuation estimates are required must encom; ass the entire area within a circle of about 10 miles radius, and nave outer boundaries corresponding to the plume exposure EPZ. These areas are as follows:
Distance Area 2 miles two 180* sectors 5 miles four 90* sectors about 10 miles four 90* sectors Estimates for the outer sectors should assume that the inner adjacent sectors are being evacuated simultaneously. To the exent practical, tne sector boundaries should not divide densely populated areas.
Knere a direction corresponding to the edges of areas for which estimates nave been mace is thought not to be adequately represented by the time estimates fcr acjacent areas, an additional area should be defined and a separate estimate made for this casa. The format for submittal should incluce Doth a table and a figure (overlaid on a map) which each give the information requested in items 1 and 2 below. Aoditional material may be provided in associa:ec text.
Reouired Information 1.
Two estimates are requested in each of the areas cefined in item 1 for a general evacuation of the population (not includir.g special facilities).
A best estimate is required and an aaverse weatner estimate is required for movement of the population.
2.
The total time required to evacuate special f acilities (e.g., hospitals) within each area must be specified (best estimate and aaverse weather).
3.
The time required for confirmation of evacuation shculd ce ir.dicated.
Confirmation times may consider special instructions to the cublic (e.g.,
tying a hankerchief to a door or gate to indicate the occupa..t has lef t the premises).
4.
Where plans and prompt notification systems have not teen put in place for areas out to auout 10 miles, estimates of tne times requireo to evacuate until sucn measures are in place for the plume exoosure emer;ency planning zone (EPZ) should also be given.
Notification times greater tnan 15 minutes should be includeo in the evacuation times and footr.otec to inaicate the notification time.
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a 5.
Where special evacuation problems are identified (e.g., in high population density areas), specify alternative protective actions, such as sheltering, which would reduce exposures and the effectiveness of these measures.
6.
A short background document should be submitted giving the methods used to make the estimates and the assumptions made including the routes and methods of transportation used.
This document should also note the comments of principal ' local officials regarding these ast1 mates.
e 17168 078