NRC Generic Letter 1980-60
- I A a UNITED STATES?2 XNUCLEAR REGULATORY
COMMISSION , gWASHINGTON.
D. C. 20555 July 2, 1980 ALL APPLICANTS
FOR CONSTRUCTION
PERMITS AND OPERATING
LICENSES 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 informa-tion regarding estimates for evacuation of various areas around proposed nuclear power plants. The information sought is described in our letter of December 26, 1979 (copy enclosed).
The requested submittal date for this information was suspended by our letter of March 11, 1980.We are requesting that you submit evacuation time estimates on an accelerated basis to enable the NRC staff to identify, in a timely manner, those sites where 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 by August 1, 1980. This time is shorter than provided in the December 26, 1979 letter because of the need for timely information and because the content of the information desired has been available to you for some months. Units sharing the same site need not, of course, submit separate time estimates.
This special request for information has been submitted to the General Accounting Office and cleared by GAO as noted in the clearance block below: Approved by GAO B-180225 (S80010)Expires 80-09-30< > Sncerely, zi senw Division of icensing Office of Nuclear Reactor Regulation Enclosure:
December 26, 1979 Letter w/Request for Evacuation Time Estimates cc: Service Lists
-or UNITED STATES NUCLEAR REGULATORY
COMMISSION
tWASHINGTON, D. C. 20555 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, (Brian K. Grimes, Director Emergency Preparedness Task Group Office of Nuclear Reactor Regulation Enclosure:
Request for Evacuation Time Estimates cc w/enclosure:
Service Lists Enclosure REQUEST FOR EVACUATION
TIME ESTIMATES (AFTER NOTIFICATION)
FOR AREAS NEAR NUCLEAR POWER PLANTS 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 time required to implement the evacuation, and the time required to confirm that an evacuation has taken place.- The estimates for time required for evacuations now requested relate primarily to the time to implement an evacuation as opposed to the time required for notification.
These estimates may be based on previous local experiences (e.g., cnemical spills or floods)or may be based on studies related to population density, 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, comments on the time estimates made should be obtained from the principal local officials responsible for carrying out such evacuations.
Such comments should be 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 ana that special planning measures should De considered.
In some cases of extreme difficulty where a large population is at risk, special facility 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 evacuated in a downwind direction (the sector containing the plume and an adjacent sector on each side), followed by the evacuation of other sectors as a precautionary measure.Hans, J. M., Jr., and T. C. Sell, 1974 Evacuation Risks -An Evaluation, U. S. Environmental Protection Agency, National Environmental Research Center, Las Vegas, EPA-620/6-74-UU2.
-2 -Formkt for Reportlng Information The areas for-which evacuation estimates are. required must encompass the entire area within a circle of about 10 miles radius, and have outer boundaries corresponding to the plume exposure EPZ. These areas are as follows: Distance Area 2 miles two 1800 sectors 5 miles: four 900 sectotrs about 10 miles four 90° sectors Estim'ates for' the outer sectors should assume' that the ininei adjacent sectors;are'being evacuated simUltaneously.
To the e'xent practical ,the sectoW'boundaries'should-not divide densely populated areas. Wnere-a directiof corlespondinng to the edges' of areas for which estimates- have ;beten mae# is-thought not to be adequately represented- by the time. estimates fct- adjacent-areas, an additional area should be defined and a separate estimate made;foe this case. The fdrmat for submittal should'include both a table and a-f'igurel(overlaid on a map) which each give the information requested in ltems5 1 and-2 beloWl. Additional matevial may be provided in associated text.R'eq'ured Inftifmation
1. Twd estimates- are reequested irfe-ach of the areas defined'in'item
1 for a general evacuatibn of the population (not' including special facilfties).
A best estimate is. required and itr adverse weather estimate 15 requi red:'for movement of thea-populatidn.
2.- The total time required to evacuate special facilities (e.g., hospitals)
within each area -ikAt be specified.(best estimate and aoverse weather).3. The t~i* requiredJfdr confirmation of evatUation shculd be indicated.
Confiriiaton times may consider"'special instructions to the public (e.g.r-tying a hankerchief to a door or gate to indicate the occupant.has left the premises).
4. Where plans and prompt notification systems have not been put in place-for areas out to about 1U miles, estimates of tne times required to evacuate until such measures -ae in' place for the plume exposure enertency planning.zone- (EPZ) should also be gsven. Noti1fication times greater than l5,minut6s should-be includea in the evacuation times and footrotea to indicate the notification time.
-3-5. 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 estimates.
ll e9n/` e-./Docket No 6'--75/323
50- 311 50- 322 50- 327/328 50- 329/330 50- 339 50- 341 50- 352/353 S0-354/355
50-358 50- 361/362 50- 363 50- 364 50- 367 50- 369/370 50- 373/374 50- 382 50- 387/388 50- 389 50-390/391
50- 395 50-397 50-400/401/402/403
50-404/405
50-410 50-412 50-413/414
50-416/417
50-423 50-424/425
50-437 50-438/439
50-440/441
50-443/444
50-445/446
50-448/449
50-452/453
50-454/455/456/457
50-458/459
50-460/513
50-461/462
50-466 50-471 50-482 50-483/486
50-484 50-485 50-488/489/490
50-491/492/493
50-496/497
50-498/499 S0- 500/501 50- 502 50- 508/509 50- 514/515 Docket No.50-516/517
50-518/519/520/521
50-522/523
50-528/529/530
50- 546/547 50-549 50-553/554 SO- 556/557 50-566/567
50-568/569
50-580/581
50-582/583
50- 592/593 50- 596/597