ML20211B475

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Rev 2 to Offsite Emergency Plan Prompt Alert & Notification Sys Addendum for Cooper Nuclear Station
ML20211B475
Person / Time
Site: Cooper Entergy icon.png
Issue date: 06/30/1986
From:
NEBRASKA PUBLIC POWER DISTRICT
To:
Shared Package
ML20211B451 List:
References
PROC-860630, NUDOCS 8610170246
Download: ML20211B475 (31)


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AN OFF-SITE EMERGENCY PLAN PROMPT ALERT AND NOTIFICATON SYSTEM ADDENOUM FOR THE COOPER NUCLEAR STATION Prepared in Response to FEMA-43 Documentation Criteria Requirements Dated September, 1983 i

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Submitted by:

Nebraska Public Power District 1414 15th Street Columbus, NE 68601 t

Original Submittal: March, 1985 Revision 1: May, 1986 Revision 2: June, 1986 i /

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, 9610170246 861010-PCR ADOCM 05000299 E - PDetL i

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CNS 05/86 l TABLE OF CONTENTS FEMA-43 Page No. Reference

1.0 INTRODUCTION

. . . . . . . . . . . . . . . . 1-1 2-1 E

2.0 NOTIFICATION METHODS AND PROCEDURES ....

2.1 Public Information Dissemination System ................ 2-1 E.5 2.2 Administrative Means of Notification .. 2-3 E.6.1 2.3 Physical Means of Notification (Alerting Systems Utilized) . . . . . . 2-4 E.6.2 2.4 Sirens ................ 2-7 E.6.2.1 2.4.1 Siren Coverage . . . . . . . . . 2-7 E.6.2.1 2.4.2 Sound Level Contour Calculation Methodology .......... 2-8 E.6.2.1 2.4.3 Siren Sound Level Output . . , . 2-11 E.6.2.1 2.4.4 Ambient Sound Levels . . . . . . 2-12 E.6.2.1 2.4.5 Siren Testing and Mai.itenance Program ...... 2-13 E.6.2.1 2.5 Mobile Siren Vehicles (Not Applicable). 2-15 E.6.2.2 2.6 Tone Activated Radios . . . . . . . . . 2-16 E.6.2.3 2.6.1 Tone Activated Radio Coverage 2-16 E.6.2.3

( 2.6.2 Tone Activated Radio Location and Registration Program . . . . 2-16 E.6.2.3 2.6.3 Tone Activated Radio Testing and Maintenance Program .... 2-17 E.6.2.3 2.7 Special Alerting ........... 2-18 E.6.2.4 2.7.1 Mobile Alert and Notification Network ............ 2-18 E.6.2.4 2.7.2 Alerting Method Rationale ... 2-18 E.6.2.4 2.7.3 Participating Organizations .. 2-19 E.6.2.4 2.7.4 Equipment Testing and Mainten-ance Program . . . . . . . . . . 2-20 E.6.2.4 3.0 EMERGENCY COMMUNICATIONS . . . . . . . . . . 3-1 F 3.1 Capability for 24-Hour Operation ... 3-1 F 3.2 System Designation .......... 3-2 F 4.0 EXERCISES AND DRILLS . . . . . . . . . . . . 4-1 N 4.1 Alert and Notification System Exercises 4-1 N.1 4.2 Alert and Notification System Drills . 4-3 N.2 4.3 Alert and Notification System Exercise Scenario Development . . ... 4-4 N.3 4.4 Review of Comments on Exercises and Drills .............. 4-5 N.5 11

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CNS 05/86

( LIST OF TABLES AND FIGURES Figure 2.3.1 Cooper Nuclear Station Population Figures Table 2.3.1 Communities Located Within 10 Miles of the CNS LIST OF APPENDICES A. Letters of Conditional 44 CFR 350 Approval B. Design Rationale for Radio-controlled Outdoor Siren Alerting System for CNS C. Topographic Map (CNS Alert and Notification System)

D. Siren Testing and Maintenance Program E. Anechoic Chamber Test Results for Federal Signal Thunderbolt F. Tone Activated Radio Description G. Tone Activated Radio Registration Data H. Special Alerting Routes and Procedures iii

CNS 03/85

( 1. 0 INTRODUCTION This addendum was prepared to assist the Federal Emergency Manegement Agency (FEMA) in evaluating the " Alert and Notification System" require-ments of 44 CFR 350. This report is part of an ongoing process by which FEMA evaluates and approves both state and local emergency plans and preparations to deal with a radiological emergency at Nebraska Public Power District's Cooper Nuclear Station (CNS).

There are sixteen planning standards identified in 44 CFR 350.5 which are to be used in evaluating, assessing, reviewing, and approving state emergency plans. Of these sixteen planning standards, three apply to alert and notification:

Section E, Notification Methods and Procedures Section F, Emergency Communications, and Section N, Exercises and Drills.

i Currently, the Nebraska Radiological Emergency Response Plan (NE RERP)

and the Missouri Nuclear Accident Plan (MO NAP) for the CNS have received Conditional 44 CFR 350 Approval. This report represents a com-prehensive addendum to the previously approved sections of the NE RERP and M0 NAP. It is anticipated that once the information presented in this report has been reviewed and approved by FEMA, all the Planning Standards from NUREG-0654/ FEMA-REP 1, Rev. I will have been satisfactor-ily addressed; and, therefore, Final 350 Approval will be issued.

This report has been structured to provide all of the necessary and pertinent information related to the three primary planning standards (E, F, and N) for alert and notification systems requested by FEMA in the " Standard Guide for the Evaluation of Alert and Notification Systems for Nuclear Power Plants," FEMA-43, dated September,1983. In addition, this addendum report utilizes the " Recommended Format for Submittals Describing Alert and Notification Systems," FEMA-43, Appendix 1.

1-1

. CNS 05/86 The CNS Prompt Alert and Notification System uses a combination of fixed sirens and tone activated radios for alert and notification of personnel in the CNS 10-mile EPZ. Special alerting of state parks and wild life areas is achieved through mobile sirens and P.A. systems.

It should be noted that one section in FEMA-43 is not applicable to this submittal. Section E.6.2.2 (Mobile Siren Vehicles) is not addressed since this notification method is not utilized as a primary means of notification in the Prompt Alert and Notification System (PANS) for the CNS.

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CNS

, 05/86 I 2.5 Mobile Siren Vehicle (FEMA-43 Ref. E.6.2.2) (Not Applicable)

It should be noted that the use of Mobile Siren Vehicles (as described in FEMA-43, Section E.6.2.2) has not been employed as a primary element of the CNS Prompt Alert and Notification System. Therefore, this section of FEMA-43 is not applicable for this submittal.

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CNS 03/85 2.6 Tone Activated Radios (FEMA-43 Ref. E.6.2.3) 2.6.1 Tone Activated Radio Coverage All areas of the EPZ except those populated areas covered by sirens are alerted by tone activated radios. The map presented in. Appendix C shows those areas of the Cooper Nuclear Station EPZ where tone activated radios are not distributed except upon request. (This map also presents the siren contours described in Section 2.4.1 of this document. ) The map is a composite of individual U.S. Geological Survey quadrangle maps with latitude and longitude indicators and reproduced to a scale of 1:31680.

2.6.2 Tone Activated Radio Description The - tone activated radios utilized in the CNS PANS are Redi-Alert emergency warning monitors. Each is housed in a durable case and designed for unattended attention. The radios operate on 110V A.C. with battery backup. The radios are permanently tuned to the appropriate EBS station (KFAB-AM [1110 kHz] for Nebraska residents cnd KFEQ-AM [680 kHz]

for Missouri residents). Each receiver is activated by the EBS Atten-tion Tone and broadcasts the subsequent message about the particular emergency.

2.6.3 Tone Activated Radio Location and Distribution The distribution of the over 700 tone activated radios in the CNS EPZ is based primarily on the siren coverage. The sirens are located in or near the various population centers. Due to the rural character of the EPZ (very low average population density of 17.9 persons per square mile) tone activated radios have been hand-distributed to those homes and businesses throughout the EPZ that are not adequately covered by ,

sirens. (Initial operating instructions have been given in both oral and written form.) Appendix G includes a register documenting the distribution of tone activated radios in the CNS EPZ.

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CNS 03/85

( 2.6.4 Tone Activated Radio Testing and Maintenance Program Tone Activated Radio Testing Once per week the primary EBS stations (KFAB-1110 kHz and KFEQ-680 kHZ) test their EBS system which activates the tone activated ~ radios and proceeds with the message. Thus individuals with EBS tone activated radios will have their radios automatically tested once per week. A test button is provided on each radio to verify operability. In addi-tion, the tene activated radios have a battery test button and indicator light to check the battery backup power source.

Maintenance Should the EBS activated radio fail any of the above tests, malfunction, or need maintenance or repair, a telephone number is posted on the radio for the individual to call to initiate corrective actions. Notices to check batteries are issued quarterly through local newspaper and radio media. Appendix F contains the brochure issued with each unit which

(. describes the use of the unit and what to do in the unlikely event it should fail to operate.

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CNS 05/86 1

2.7 Special Alerting (FEMA-43 Ref. E.6.2.4) .

I 2.7.1 Mobile Alert and Notification Network The special alerting components of the CNS Prompt Alert and Notification System are used for those areas of the CNS Emergency Planning Zone not covered by fixed sirens or tone alert radios. These areas consist of the . Indian Cave State Park in ' Nebraska and the Brickyard Hill State Wildlife Area in Missouri. Appendix C delineates those areas of the CNS Emergency Planning Zone which are to be covered by mobile routes.

Resources, manpower, and vehicles for the CNS PANS will be supplied from existing resources and will be supplemented by mutual aid agreements that are on record for the appropriate state, county, and local government emergency response organizations. Appendix H of this report presents maps of 'the. Mobile Alert and Notification Routes and the route activation procedures applicable for each park.

2.7.2 Alerting Method Rationale .

As indicated in Appendix 3 of NUREG-0654/ FEMA-REP-1 (Rev.1), it may be .

more cost effective in sparsely populated areas to use special alerting methods other than sirens. FEMA-43 also indicates that seasonal and diurnal population variations may also be a factor in selecting alternative means of notification. It is most cost effective for the States of Missouri and Nebraska to make optimum use of existing available resources. Therefore, the respective M0 NAP and NE RERP plans for special alerting of the Brickyard Hill State Wildlife Area and the

. Indian Cave State Park via Mobile Alert and Notification Routes include the use of onsite Department of Conservation and Park Ranger vehicles with sirens and public address systems. Route dispatching will be accomplished in Missouri by the Conservation Department and in Nebraska by the Nemaha County Sheriff.

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s CNS 06/86

'l The primary purpose of the Mobile Alert and Notification System is to direct the individuals in the parks indoors. The public will be alerted by the broadcasting of either a steady siren blast or a simple message over the mobile public address systems. LSigns are posted' at park entrances info'rming visitors what to do if they hear an alert signal.

This message will inform the~ park visitors of an incident, and will advise them to tune their radios to KFEQ-AM and KFAB-AM, in Missouri-and Nebraska respectively, for further instructions.

2.7.3 Participating Organizations The primary and backup responders for each area requiring mobile alert and notification are shown below.

Primary Backup Brickyard Hill Atchison County Atchison County Sheriff Conservation Agent Cox Aviation Other pilots (3) b Indian Cave Park Ranger Assistant Park Ranger It should be noted that in both park areas the Conservation Agent and Park Ranger are on the premises. They can commence notification as soon as they are notified. Additionally, the Cox Aviation aircraft used at Brickyard Hill' are located approximately 10 miles from the park. Also, another aircraf t is located 1 mile west of Weston, about 5 miles from the park. (The use of Cox Aviation aircraf t is documented in a Letter of Agreement with the SEMA.) An analysis of the equipment and routes is presented in Appendix H.

2.7.4 , Equipment Testing and Maintenance Program The CNS Prompt Alert and Notification System design basis requires that special alerting in both parks shall be by park vehicles, and also by aircraft in Brickyard Hill. Routine use of these vehicles, independent of their utilization as a part of the CNS Prompt Alert and Notification System, demonstrates those capabilities required for their performance as a part of the Alert and Notification System. Many tests are accom-plished through daily usage.

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. CNS 06/86 '

Mechanical Tests -

Standard procedure for vehicle maintenance is usually based upon manu- -

facturer specifications. Most governmental departments and agencies have additional requirements for their vehicles and thus- schedule service on all vehicles to ensure optimum reliability. Additionally, aviation companies must perform regular maintenance to ensure the aircraft operability.

Electronic Tests Routine use of the radio communications attests to their reliability.

The siren and public address systems are tested at least monthly as a part of the monthly siren activation. This establishes that they are adequately tested and maintained.

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APPENDIX H SPECIAL ALERTING ROUTES AND PROCEDURES AND

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OF PROCEDURES

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05/86 APPENDIX H

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SPECIAL ALERTING ROUTES AND PROCEDURE SUMMARIES The special alerting components of the CNS Alert and Notification System are used for those areas of the CNS Emergency Planning Zone not covered by fixed sirens or tone alert radios. These areas consist of' the Brickyard Hill State Wildlife Area in Missouri and the Indian Cave State Park in Nebraska. Appendix C delineates these areas of the CNS Emergency Planning Zone which are to be covered by mobile routes.

Resources, manpower, and vehicles for the CNS Alert and Notification System will be supplied from existing resources and will be supplemented by mutual aid agreements that are on record for appropriate state, county, and local government emergency response organizatons.

This appendix presents maps of the two alerting routes and summaries of the procedures to be used to activate these routes. The route maps and procedure summaries for Brickyard Hill and Indian Cave are included as Attachments H.1 and H.2, respectively.

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.CNS 06/86 l ATTACHMENT'H.1 4

'This attachment . to Appendix H contains the mobile notification route map, aerial notification flight pattern map, and corresponding procedure summary for the Brickyard Hill State Wildlife Area. An analysis of the equipment and routes is also presented in this attachment.

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BRICKYARD HILL WILDLIFE AREA

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, CNS 05/86 1 Brickyard Hill Special Alerting Procedure Summary In the event of an emergency at CNS where notification of visitors to the Brickyard Hill State Wildlife Area is deemed necessary, the following alerting procedures will be followed:

Primary:

1. State Emergency Management Agency (SEMA) will contact the Conservation Department.
2. Conservation Department will notify the Atchison County Conservation Agent.
3. The Conservation Agent will drive through the park with his siren on a steady blast. Signs at all parking areas and all access and egress points inform visitors what to 4

do when this signal is given.

4. SEMA will notify Cox Aviation of Tarkio to fly over Brickyard Hill using the siren on a steady blast.

Secondary:

5. The Conservation Agent and the pilot will maintain communications on the Sheriff's frequency.
6. The Conservation Agent and the pilot will have public address' capability to notify transients of evacuation information.

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CNS 06/86 i Special Alerting Analysis An analysis of the notification equipment and time frames for both vehicle and airacraft is presented below. Note that the route is for one vehicle and the flight lines are for one aircraft.

Vehicle Siren model: Trippe ES-4 Rating at 100 ft: 87 dB(C) (based on the unit size of 25 watts)

Fundamental frequency: no data available Range to 70 dB(C): 330 ft Vehicle velocity and observer distance from road to ensure a 70 dB(C) signal is heard for 15 seconds: 18.5 mph, 260 ft Route length: 13.5 miles Time to traverse route: 44 minutes The total elapsed time to perform the vehicle notification is 45 minutes, since the conservation agent and vehicle are on the park premises.

Aircraft Siren model: Whelen 370 (2 sirens)

Amplifier: WS-295 Rating at 100 ft: 112 dB(C) (manuf acturer's rating)

Range to 70 dB(C): 1890 ft Flight altitude: 500 ft Flight Speed: 70 mph Effective 70 dB(C) signal duratioc. time: 35 sec Length of flight lines over park: '.5 mi Time to cover flight lines: - 6.4 minutes Pilot notification time: 2-5 minutes Pilot transit time to aircraf t: 5-15 minutes 2-5 minutes Aircraft preparation time:

Aircraft takeoff time: 2-5 minutes Flight time to Brickyard Hill: 5 minutes l -

Total elapsed notification time: 22.4-41.4 minutes l

l (Note, all aircraft pilots can respond within these time frames. Also, a faster flight speed is possible, but with a reduction in effective signal duration length.

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This attachment to Appendix H' contains the route map and . corresponding procedure summary for the Indian Cave State Park in Nebraska. An analysis of the mobile. routes is also presented in this attachment.

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'S Procedure Summary In the event of an emergency at CNS where notification of visitors to the Indian Cave State Park is deemed necessary, the following procedures will be followed:

1. Nemaha' County Sheriff will contact Park Rangers by telephone 'or radio to inform them of the emergency situation.
2. Park Rangers will drive through the park with mobile sirens and use their PA systems to ' instruct visitors to take appropriate emergency actions.
3. Park Rangers will confirm completion of notification and status of. emergency actions by radio to the Nemaha County Sheriff.

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, 05/86 l Special Alerting Route Analysis Route: Paved Road. A B Length (miles): 16.5 5 6.5 Average speeda (mph): 25 8.6 10.4 Notification time (minutes): 40 35 37 Activation time (minutes): '

5 5 5 Elapsed time (minutes): 45 40 42 a

Average speed on paved road based on posted speed limit. Average speed on the ATV routes (A & B) based on preliminary route. testing.

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7 Federal Emergency Management Agency Region VII 911 Walnut Street Kansas City, Missouri 64106 g

JUN 9 1986 Y

MEMORANDUM FOR: R.D. Ross, Director s ,

FROM: nk .a , - Chief satural & Technological Hazards Division

SUBJECT:

ANS Submission - Brickyard Hill Deficiency Wa received the facsimile transmission of the above referenced material on Friday, June 6, 1986.

A' thorough reviev yields the following conclusions:

1.

The State and local plan changes are acceptable and capable of being tested in a remedial exercise. .

2. The Design Report Amendments appear to support the plan changes.

However, full acceptance. is contingent upon approval by FMA Headquarters. The amendments vill be forwarded in: mediately.

'3 Removal of the deficiency at Brickyard Hill incurred at the exercise of October 16, 1985, can be accomplished through a successful l demonstration of timely alert and notification at a remedial j exercise. This exercise is currently planned to begin at 11:00 a.m. on June 16, 1986. FEA vill have two evaluators at Brickyard Hill (one to ride in the vehicle with the park ranger), one evaluator at the Atchison County EOC, and one evaluator at the airfield at Tarkio, Missouri.

For this exercise, there should be no prepcsitioning of the pilot, nor any prior installment of the sound systens on the aircraft.

Any questions should be directed to Dick Su=pter at (FTS) 758-2161 or (816) 37h-2161.

ec: copy faxed to addressee on above date Fran Laden, NE CDA l Charles Hackney, NRC IV Megs Hepler, FEMA HQ Ken Green, FEMA HQ Michelle Buteau, IEAL l

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Federal Emergency Management Agency Region VII 911 Walnut Street K'ansas City, Missouri 64106 JUS I i 1996 MEMORANDUM FOR: Megs Hepler, Energency Management Specialist - m' Field Operations Branch, SL-NT-TH-F0 26,'i FROM: Dick Sumpter, E=ergency Management Specialist '

Natural & Technological Hazards Division..

SUBJECT:

Amendments to Cooper ANS (FEMA-h3)

To satisfy a deficiency from the last exercise, NPPD has the attached g;ntirated amendments to the ANS.

Please attach these pages to the document, currently under review by your office.

P102se note that we are particularly interested in your evaluation of the d;ta on page H.1-5 regarding the capability of the equipment described to generate an adequate alert signal.

Wa vill test 'the audibility of the equipment at a remedial exercise on June 16, 1986.

Attachment l

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N&TH: Sump er/csv 6/11/86 rro 1 Leonard Be y Sumpter I

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MEMORANDUM FOR: Samuel Speck, Associate Director State & Local Programs & Support Directorate ha i ATI'ENTION: Ro' ert erson, Chief Technological Hazards Division, SL-NT-TH 27.

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John P Cole =an, Acting Regional Director, FEMA Region VII s

FROM: .

SUBJECT:

Cooper Nuclear Station Deficiency - Brickyard Hill Attached is a report of the Remedial Exercise of June 16, 1986, conducted to remedy the deficiency involving Alert and Notification capability at tha Brickyard Hill State Wildlife Area in Atchison County, Missouri.

As you can see the amendments to the State and local plan and the ANS vere successfully exercised, and demonstrated the capability to accomplish timely nisrting of transients in the Brickyard Hill State Wildlife Area.

Tha deficiency is therefore satisfied.

Attachment ec: Charles Hackney, NRC IV Clem Morgan, NPPD R.D. Ross, M0 S &A Fran Laden, NE CD Ken Green, FEMA HQ Craig Wingo, FEMA HQ W

M

O REMEDIAL E2ERCISE 0F THE PRIMARY ALERT SYSTIO(

FOR BRICKIARD HILL STATE M M g

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Brovnv111e, Nebraska 27' w

June 16, 1986 t

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At the exercise held October 16, 1986 at the Cooper Nuclear Station, tha following deficiency was cited for the Missouri portion of the -

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"Neither the State nor Atchison County Plan provide for alert and notification of the transients within i the Brickyard Hill State Wildlife area. Plans must '

be revised to reflact the applicable provisions of NUREG-0654 and -[ FEMA] REP-10." g On June 16, 1986 the above cited plan revisions and' an amended 'ANS N dssign report for primary alerting were tested in a remedial exercise.

Tha objectives of the exercise were twofold: (a) to test the timeliness of the airborne siren alert methodology and the truck mounted route clart siren; (b) to determine the audibility of the siren mounted on th2 aircraft.

Four FINA evaluators were utilized: one was stationed at the Atchison County Sheriff's Office, one at the airfield at Tarkio, Missouri, one in the field at Brickyard Hill and one riding in the -truck for route clarting in Brickyard Hill.

At 11:15 AM the licensee- (CNS) notified the Missouri State Emergency Management Agency (SENA) of the simulated " Alert" status. CNS also notified the Atchison County Sheriff at 11:16. The Sheriff verified tha call and then at 11:17 notified Cox Aviation service to fly the "Altrt" route over Brickyard Hill. SEMA also called Cox Aviation at 11:17:30.

By 11:26 the sound system was installed en the aircraft. The plane was airborne at 11:29 The alerting was accomplished and the plane raturned to the field at 11:h7.

In the meantime, the Sheriff notified the Conservation Agent at Brickyard

] Hill at 11:19 He immediately began the rcute alerting and drove the Eppointed route, finishing at 11:hh.

j The field based evaluator determined that the siren sounded by the aircraft flying at 500 feet above the grcund was audible. Final I detsmination of adequacy is centingent upcn a technical review cf tha amended design report.

i While weather might be a constraining factor in getting the plane aloft, i

th2 truck mounted system affords a degree of redundancy. Weather j minimums at that field are: ceiling - h00 ft. and visibility - 1 mile. -

l L Bastd on the above observations, it can be concluded that both the prsviously stated exercise objectives were successfully demonstrated,

[ thus remedying the deficiency.

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  • GENERAL OFFICE L Nebraska Public Power District P o. Box .99 COLUMBUS. NEBR ASKA 68601-0499 TELEg o~E<.02>s6 ..s6, Augus t 15, 1986 -

Mr. Fran Laden Nebraska Civil Defense Agency 1300 Military Road Lincoln, NE 68508 h-

Dear Mr. Laden:

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Subject:

Transient Notification along the Missouri River agerence: Memorandum from F. Bagley dated June 6, 1986

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W)qda Public Power District has reviewed the Federal Emergency Management Agungy y (FEMA) memorandum dated June 6,1986. In their memo FEMA requested that aMitional information be provided. The additional information requested is provided herein. i

> i The FEMA-43/ REP-10 Design Report addendum, Revision 3, is enclosed. Note it

( is a draft, the final is due from our contractor on August 18, 1986. The revision contains information pertaining to the special alerting as it pertains to the Missouri River. There is also an analysis of two additional fixed sirens.

The draft copy enclosed does not include a map of the contour lines for these sirens, the final version will, however.

The informational signsto be posted along the Missouri River will not be in-stalled in time for the September 24, 1986 Cooper Nuclear Station emergency exercise. These signs will be installed in mid-October. The size of the signs located at the entrance of the 10 mile EPZ are 48" x 48", they have a white background and chocolate brown lettering.

l The size of the signs located at the public access points is 24" x 24", with chocolate brown lettering on a white background.

( The text of these signs is as follows:

ATTENTION IF SIRENS SOUND, TUNE TO 1110 AM OR 680 AM FOR EMERGENCY INFORMATION Nebraska Public Power District is currently negotiating with the property owners to obtain right of wa/ for the sign installation.

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s' Mr. Fran Ledan Augus t 15, 1986

. Page 2 The installation of the two fixed sirens as discussed in the design report, will be installed in mid-October. Reference a telecon from Ed Bussie to Dennis Yates, on July 17, 1986.

The letter of agreement (LOA) between the Nebraska Civil . Air Patrol (CAP),

Nebraska Public Power District (NPPD), and the Nebraska State Civil Defense Agency (NSCDA) is enclosed. The LOA is in draft form pending approval by all parties. The final LOA should be approved soon.

In summary the schedule is:

August 18, 1986 Design Report, Revision 3 final.

Mid-October,1986 Installation of signs.

Mid-October,1986 Installation of two fixed sirens.

ASAP final approval version of Letters of Agreement.

Sincerely, M

J. . Pilant Technical Staff Manager JMP/dkh

</. cc: K. C. Walden K. M. Krumland P. R. Windham C. A. Hackney, NRC Region IV Attachments .

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