ML20148N673
| ML20148N673 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 04/01/1988 |
| From: | George Thomas PUBLIC SERVICE CO. OF NEW HAMPSHIRE |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| NYN-88042, NUDOCS 8804070221 | |
| Download: ML20148N673 (24) | |
Text
--.
~go s
0 George S. Thomas Vic.e President Nuclear Production NYN-88042 Pubuc Service of New e
April 1, 1988 Ntw Hampshire Yankee Division United States Nuclear Regulatory Commission Washington, DC 20555 Attention:
Document Control Desk
References:
(a)
Facility Operating License NPF-56, Construction Permit CPPR-136, Docket Hos. 50-443 and 50-444 (b)
PSNH Letter (NYN-88025) dated February 26, 1988,
'Seabrook Plan for Massachusetts Communities (SPMC);
Request for Additional Information," G. S. Thomas to USNRC (c) USNRC Letter, dated March 18, 1988, "Request for Additional Information - Seabrook Emergency Plan," Victor Nerses to R. J. Harrison
Subject:
Response to Request for Additional Information on the Public Alert and Notification System Gentlemen:
New Hampshire Yankee (NHY) submitted a description of the Public Alert and Notification System for the Massachusetts portion of the Emergency Plaaning Zone (EPZ) on February 26, 1988 [ Reference (b)). Since that time, work has continued on the design and implementation of the system.
On March 18, 1988, the Nuclear Regulatory Commission (NRC) informed New Hampshire Yankee that additional information and further revision to the Seabrook Station Radiological Emergency Plan (REP) would be required before concluding that the guidelines of NUREG-0654 Revision 1 are satisfied (Reference (c)).
The enclosure to Refersace (c) contained two general requests and nine specific requests regarding the REP. to this letter contains the responses to the two general requests. contains the responses to the nine specific requests.
Further, the NRC recommended that the Seabrook Station REP be revised to include the information contained in the Vehicular Alert and Notification System (VANS) design report.
NHY is c.trrently modifying the design report and will include this information in Appendix E to the Seabrook Station REP.
In reviewing Section 11 of the Seabrook Plan, it was determined that no changes to that section are needed. A revision to ti? REP will be issued by April 30, 1988, and will include the changes to Appendix E as well as revisions to incorporate the NHY-OR0. As indicated in Reference (b), NHY will also submit the FEMA REP-10 design report prior to the upcoming graded exercise.
f
'h g' 2 6 e
8804070221 880401
"). Seabrook. NH 03874. Telephone (603) 474 -9574 PDR ADOCK 05000443 fF FGTQ
m;*.
.s_
.l United States Nuclear Regulatory Commission April 1, 1988 Attention:' Document Control Desk Page 2 l
3 NHY agrees that it would be beneficial to have a comprehensive discussion of the VANS. NHY is presently scheduling a test of the prototype VANS system by the end of April 1988. We propose that the NRC staff observe the test. We l
are prepared to discuss the VANS concept with the NRC staff at their convenience.
In accordance with previous NRC direction, one copy of the enclosed document will be sent to the FEMA /RAC Chairman for the SPMC.
Should you require any additional information, please contact Mr. Callendrello at (603) 474-9574, extension 2751.
Very truly yours, w,SM George S. Thomas Enclosures cc:
Atomic Safety and Licensing Board Service List Mr. Victor Nerses, Project Manager Project Directorate I-3 Division of Renctor Projects United States Nuclear Regulatory Commission Washington, DC 20555 Mr. William T. Russell Regional Administrator Region I U. S. Nuclear Regulatory Commission 425 Allendale Road King of Prussia, PA 19406 Mr. A, C. Cerne NRC Senior Resident Inspector Seabrook Station Seabrook, NH 03874
1, ASLB SERVICE LIST Alan S. Rosenthal, Chairman Robert A. Backus, Esquire Atomic Safety and Licensing Appeal Panel Backus, Heyer & Solomon U.S. Nuclear Regulatory Commission 116 Lowell Street Washington, DC 20555 P.O. Box 516 Manchester, NH 03105 Howard A. Wilber Atomic Safety-and Licensing Appeal Panel Philip Ahrens, Esquire U.S. Nuclear Regulatory Commission.
Assistant Attorney General Washington, DC 20555 Department of the Attorney General Augusta, ME 04333 Thomas S. Moore Atomic Safety and Licensing Appeal Panel Mrs. Sandra Gavutis, Chairman U.S. Nuclear Regulatory Commission Board of Selectmen Washington, DC 20555 RFD 1, Box 1154 Kensington, NH 03827 Administrative Judge Sheldon J. Wolfe, Esq., Chairman Carol S. Sneider, Esquire Atomic Safety and Licensing Board Panel Assistant Attorney General U.S. Nuclear Regulatory Commission Department of the Attorney General Washington, DC 20555 One Ashburton Place, 19th Floor Boston, MA 02108 Judge Entath A. Luebke Atomic Safety and Licensing Board Panel Senator Gordon J. Humphrey 5500 Friendship Boulevard United States Senate Apartment 1923N Washington, DC 20510 Chevy Chase, MD 20815 Attention:
Tom Burack Dr. Jerry Harbour Richard A. Hampe, Esquire Atomic Safety and Licensing Board Panel Hampe and McNicholas U.S. Nuclear Regulatory Commission 35 Pleasant Street Washington, DC 20555 Concord, NH 03301 Sherwin E. Turk, Esquire Thomas F. Powers, III Office of General Counsel Town Manager U.S. Nuclear Regulatory Commission Town of Exeter Washington, DC 20555 10 Front Street Exeter, NH 03833 Adjudicatory File
- Atomic Safety and Licensing Board Brentwood Board of Selectmen Panel Docket RFD Dalton Road U.S. Nuclear Regulatory Commission Brentwood, NH 03833 Washington, DC 20555 Gary W. Holmes, Esquire Diane Curran, Esquire Holmes & Ells Andrea C. Ferster, Esquire 47 Winnacunnet Road Harmon & Weiss Hampton, NH 03842 I
Suite 430 2001 S Street, NW Washington, DC 20009 l
l
{
i
(
e.
ASLB SERVICE LIST (continued)
Mr. Edward A. Thomas H. Joseph Flynn, Esquire FEHA, Region.I Office of General Counsel 442 John W. McCormack Post Federal Emergency Management Agency Office and Courthouse 500 C Street, SW Post Office Square Washington, DC 20472 Boston, MA 02109 l
Paul McEachern, Esquire Peter S. Mathews, Mayor Matthew T. Brock, Esquire City Hall Shaines-& McEachern Newburyport, MA 01950 25 Maplewood Avenue P.O. Box 360 Judith H. Mizner Portsmouth, NH 03801 Silvergate, Gertner, Baker, I
Fine, Good & Mizner Robert Carrigg, Chairman 88 Broad Street Board of Selectmen Boston, MA 02110 Town Office Atlantic Avenue Calvin A. Canney North Hampton, NH 03862 City Manager l
City Hall Charles P. Graham, Esquire l
126 Daniel Street McKay, Morphy and Graham l
Portsmouth, NH 03801 100 Main Street Amesbury, MA 01913 Stephen E. Merrill, Esquire Attorney General Gustave A. Linenberger George Dana Bisbee, Esquire Atomic Safety and Licensing Board Panel Assistant Attorney General U.S. Nuclear Regulatory Commission Office of the Attorney General East West Tower Building 25 Capitol Street 4350 East Vest Highway Concord, NH 03301-6397 Bethesda, MD 20814 Mr. J. P. Nadeau Ivan W. Smith, Chairman Selectmen's Office Atomic Safety and Licensing Board Panel 10 Central Road U.S. Nuclear Regulatory Commission Rye, NH 03870 East West Tower Building 4350 East West Highway Mr. Angie Machiros, Chairman Bethesda, MD 20814 Board of Selectmen Town of Newbury Atomic Safety and Licensing Appeal Newbury, MA 01950 Panel U.S. Nuclear Regulatory Commission Mr. William S. Lord Washington, D.C.
20555 Board of Selectmen Town Hall - Friend Street Atomic Safety and Licensing Board Panel Amesbury, MA 01913 U.S. Nuclear Regulatory Commission f
Washington, D.C.
20555 f
Senator Gordon J. Humphrey One Eagle Square, Suite 507 Concord, NH 03301 Attention:
Herb Boynton
- Two copies
e '*
gd.
e 9
g ENCLOSURE I TO NYN-88042 RESPONSE TO
GENERAL COMMENT
S I
l l
l I
t I
l t
1 I
I i
t i
i
ENCLOSURE 1 RESPONSE TO
GENERAL COMMENT
S COMMENT The Seabrook Station Radiological Emergency Plan (Seabrook Plan) should be reviewed to identify the New Hampshire Yankee Offsite Response Organization (NHY-ORO) as part of the overall response organization for the Seabrook emergency planning zone.
RESPONSE
The Seabrook Station Radiological Emergency Plan is presently being revised to reflect the existence and operations of the NHY-ORO.
These plan revisions will be issued on or before April 30, 1988.
COMMENT In addition, in November 1987, the Seabrook plan was revised to reflect that tone alert radios would be distributed prior to full power station operation.
However, since certain radios are an integral part of the primary Seabrook alert and notification system for specific isolated or hearing-impaired residents, as described in Appendix E to the Sea-brook plan, it is required that these be distributed prior to issuance of a low power license. The Seabrook plan should be revised accordingly.
RESPONSE
Notification of the public in the plume exposure pathway Emergency Planning Zone (EPZ) is conducted primarily through the use of sirens where:
"The expected siren sound pressure level generally exceeds 70 dBC where the population density exceeds 2,000 persons per square mile and 60 dBC in other inhabited areas, or.
e
.~
the expected siren sound pressure level generally exceeds the average measured summer daytime ambient sound pressure levels by 10 dB (geographical areas with less than 2,000 persons per square mile)".
(Reference 1)
If thi., criteria cannot be achieved, tone alert radios (or other nott-fication means) will be utilized for those specific geographical areas not covered by sirens. These provisions will assure that "...the prompt public notification system shall have the capability to essentially complete the initial notification of the public within the plume exposure pathway EPZ..." (Reference 2).
Tone alert radios used as part of the primary Public Alert and Notification System will be offered prior to issuance of the low power licease.
Tone alert radios for institutions and the hearing-impaired residents which form part of the supplemental alerting system (Reference 3) will be distributed to support the issuance of the full power license.
The Plan will be revised accordingly to correctly reflect the FEMA requirements.
REFERENCES 1.
FEHA-REP-10, November 1985, Section E.6.2.2 2.
10CFR50, Appendix E, Section D.3 3.
FEMA-REP-10, November 1985, Section E.6.2.4.2 7_.
s *.
t t
ENCLOSURE 2 TO h1N-88042 RESPONSES TO SPECIFIC COMMENTS
' s
+
EP! CLOSURE 2 RESPONSES TO SPECIFIC COMMENTS QUESTION NO. 1 Specific organizations or individuals, by title, who will be responsible for notifying response organizations and the af fected population, and specific decision chains for rapid implementation of alerting and notification decisions.
RESPONSE TO NO. 1 In the event that Seabrook Station declares an immediate Site Area 4
Emergency or General Emergency with a recommendation for sheltering or evacuation, the following actions will be taken:
The Seabrook Station Short-Term Emergency Director (STED) will notify the NHY Offsite Response EOC Contact and establish con-tact with of ficials of the Commonwealth of Massachusetts through the Massachusetts State Police with the recommendation and request for authorization to activate the Public Alert and Notification System.
The NHY Offsite Response E0C Contact will direct the dispatch of VANS and operators through communi ation with each VANS staging area.
Upon receiving authorization, the STED w *.11 activare the Massachusetts portion of the public ;1ert and notification system through communication with and direction to the NHY Offsite Response EOC Contact.
Q.1-1
m-
.. +
The NHY Offsite Response EOC Contact will contact the lead EBS radio sta; ion and provide the authentication code.
He will ex-plain that there is an immediate Site Area Emergency (or General Emergency) and instruct the radio station operator on the appro-priate EBS meosage to commence broadcast based on direction pro-vided by the Sesbrook Station Short Term Emergency Director.
The NHY Offsite Rasponse EOC Contact will remotely activate the VANS sirens concurrent with the EBS message broadcast.
In the case of an escalating emergency, after the NHY Offsite Response Organization is activated the NHY Offsite Response Director will assume Public Alert and Notification System reaponsibility, including EBS acti-vation, from the Seabrook Station Emergency Response Organization (ERO).
Upon authorization of the officials of the Commonwealth of Massachusetts (as described in Implementing Procedure 2.14, Emergency Response Assessment),
he will direct public notifications to be made using the Public Alert and Notification System.
The Public Notification Coordinator will communicate with the Statt of New Hampshire and the Commonwealth of Massachusetts to coordinate EBS messages and timing of the Massachusetts siren system with that of New Hampshire.
The lead EBS radio station will be provided with the approved EBS message (s) and instructed to commence broadcast.
Con-current with broadcast of the EBS message, the Commanication Coordinator will activate the siren system which consists of a Vehicular Alert and Notification System (VANS) using the siren activation encoder in the NHY Offsite Response EOC.
The VANS vahicles will be dispatched at the Alert or higher emergency classification.
Additional backup methods will he available for public alerting, including activation of backup VANS, Q.1-2 L
.if
.1 and an airborne alert system which consists of a helicopter-mounted siren /public address system.
The NHY Offsite Response Director will verify the State of New Hampshire's initial notification to the U.S. Coast Guard and the Federal Aviation Administration.
The U.S. Coast Guard is responsible for notification of transients in waters under their jurisdiction, and the FAA is responsible for notifying and restricting air traffic in the area.
The NHY Offsite Response Organization also maintains the capability, as part of the supplemental alerting system, to notify public and private schools, day care centers, nursing homes, hospitals, medical f acilities, and other special facilities, along with Route Guide door-to-door notification of the hearing-impaired population as coordinated by the Special Population Coordinator, and the School Coordinator as described in Seabrook Plan For Massachusetts Communities (SPMC) Implementing Procedure 2.1 (Notification of Emergency Response Personnel and Support Organizations), Implementing Procedure 2.7 (Special Population Coordinator / Special Population Liaisons),
and Implementing Procedure 1.9 (School Coordinator / School Liaisons).
Additional information regarding public notification is provided in SPMC Section 3.7, Implementing Procedure 2.12 (Public Information - News Releases and Rumor Control), Implementing Procedure 2.13 (Public Alert 4
P' e
Q.1-3
-~
-+s
-v-
.i
_rA.
and Notification System including EBS Activation), Implementing Procedure 2.14 (Emergency Response Assessment), Implementing Procedure 2.15 (Airborne Alert Activation), Implementing Procedure 2.16 (Vehicular Alert and Noti-fication System).
This procedure assures rapid implementation of alerting and notification decisions and will be included as part of the FEMA-REP-10 submittal.
4 l
l l
l l
l l
t Q.1-4 I
QUESTION NO. 2 Capability for 24 hour-per-day alerting and notification, including the locations of VANS staging areas.
RESPONSE TO NO. 2 The VANS vehicles are dispatched at the Alert or higher emergency classi-fication.
The Seabrook Station Short-Term Emergency Director (STED) notifies the NHY Offsite Response EOC Contact, who in turn will dispatch the VANS by notifying the VANS operators at the staging areas.
The NHY Offsite Response EOC and the VANS staging areas are each continuously staffed for 24-hour-per-day operations.
Each VANS staging area will be staffed with suf ficient VANS operators to deploy the VANS vehicles.
Once an operator assumes the responsibility of a VANS vehicle, routine surveillance checks will be performed, by procedure, to ensure the oper-ability of the vehicle, siren, lif t mechanism, and other supporting equipment (e.g., radios, etc. ).
VANS vehicles will be rotated to Seabrook Station every thirty days for surveillance, maintenance, and operability testing.
Since NHY will maintain reserve vehicles, the quantity of VANS vehicles required for public alert and notification will not be diminished during these surveillance and maintenance periods.
Preliminary selection has been made of the VANS staging areas.
The VANS staging area location and layout will enable prompt dispatch of each vehicle to its predesignated acoustical location.
Specific locations in or near the Massachusetts portion of the EPZ will be provided in the FEHA REP-10 Report.
Q.2-1
QUESTION NO. 3 Provisions for a coordinated activation of the New Hampshire siren system and the VANS.
This description should include the methods that will be used to ensure that the sirens in New Hampshire that are relied
' upon for partial acoustical coverage in the Massachusetts EPZ are sounded in concert with the VANS to those same relative locations.
RESPONSE TO NO. 3 The current concept of operation utilizes sirens activated under the SPMC. While there is an inherent acoustical overlap on the MA/NH border, each state utilizes a system for alerting that does not rely on the other's system. -Also, see the response to Question No. I for a descrip-tion of the provisions for a coordinated activation of the New Hampshire sf ren system and the Massachusetts siren system.
Q.3-1
-. =. -
QUESTION NO. 4 The times required for notification of vehicle drivers, drivers' re-sponse, preparation of vehicles for dispatch and travel of vehicles from staging areas to predesignated locations.
RESPONSE TO NO. 4 The VANS is designed to accomplish the alert function "within about 15 minutes". To accomplish the alert f unction the VANS vehicles must be dispatched, travel the predetermined route, and be setup in the operable position.
At this point the VANS are fully deployed for remote operation.
The siren activation time meets the guidelines set in fella-REP-1 and FEMA-REP-10.
For VANS design purposes the 15 minute time interval is composed of deployment time and siren activation time.
Each of these is discussed below.
DEPLOYMENT TIME Deployment time is the combination of the time to dispatch the VANS vehicles (dispatch time), travel the predetermined routes (transit time), and raise the siren at the acoustic location (setup time).
A deployment time of twelve minutes or less is used in the VANS design.
The dispatch time is the time required to alert the VANS oper-ators and to dispatch the vehicles.
The dispatch time in the Seabrook Station VANS design will be determined based on training and drills conducted to verify the dispatch time, l
The transit time is the time required for the VANS vehicle to 1
travel the predetermined route from the VANS staging area to the Q.4-1 l
j,.
acoustic location.
The transit time is based on traveling the route within the posted speed limits and observing traffic laws.
Final transit times will be determined using vehicles of the sar.e weight and frame class as the VANS vehicle.
The route 4
transit times will se developed using a Seabrook Station procedure that will require traveling and timing each route at various time periods of the day on weekdays and weekends for a two-week period.
The setup time is the time required to setup the VANS vehicle and siren at the acoustic location. The setup time includes parking the vehicle, deploying the vehicle outriggers, and utilizing the aerial lift to raise the siren to the operable position.
The final setup time will be verified by conducting a verification test on a VANS prototype vehicle.
The setup time qualification will be maintained by operator training and periodic drills and requalification.
i SIREN ACTIVATION TIME The design basis siren activation time is three minutes based on the guidelines in FEMA-REP-1 and FEMA-REP-10.
Preliminary estimates of deployment times and siren activation times are i
included in Table 4-1.
3-1 i
I l
Q.4-2
6 TABLE 4-1 SEABROOK STATION MASSACHUSETTS PUBLIC ALERT & NOTIFICATION SYSTEM PRELIMINARY VANS SIREN LOCATIONS, ACOUSTIC LOCATIONS & ACTIVATION TIMES (ALL TIMES ARE IN MINUTES)
SIREN STAGING ACOUSTIC DEPLOYME NT ACTIVATION TOTAL AREA LOCATION TIME TIME TIME S1 P1 10.5 3.0 13.5 S2 P4 3.0 3.0 6.0 P3 10.2 3.0 13.2 P2 8.0 3.0 11.0 S3 P7 9.5 3.0 12.5 P12 8.3 3.0 11.3 P13 11.0 3.0 14.0 S4 PS 3.0 3.0 6.0 P9 12.0 3.0 15.0 P8 10.3 3.0 13.3 SS P6 6.2 3.0 9.2 86 P10 9.4 3.0 12.4 P11 10.5 3.0 13.5 P14 6.7 3.0 9.7 l
I l
q.4-3
QUESTION No. 5 Methods to be employed to ensure availability of VANS (or backup alerting system) under adverse weather conditions, such as ice storms, heavy snows and floods.
RESPONSE TO NO. 5 The VANS vehicles will be located at outdoor and indoor staging areas.
At indoor VANS staging areas the driveway access and f acility will be maintained in a condition suitable for prompt VANS deployment.
At outdoor VANS staging areas, the vehicles will employ block heaters to maintain the reliability of the vehicles.
A different VANS vehicle has been selected from that descrioed in our February 26, 1988 letter.
The VANS vehicle is a commercially available, truck-mounted telescoping crane, complete with outriggers.
The crane is mounted on a 26,500 lbs. GVW heavy-duty construction r ade truck.
The truck has a high-ground clearance and will be equipped with snow rires suitable for its intended use.
The VANS truck is similar to those i
used for other services under adverse weather conditions.
No significant delays attributable to the VANS vehicle traversinr, their routes under adverse weather conditions are anticipated based on the choice of the vehicles and operator training.
All routes are hard-surfaced roads and consist of at least two lanes that will allow the truck to pass stalled vehicles, if required.
For most acoustic locations (See Table 4-1) there is margin in the total time available for public alert and notification to accommodate additional route transit time due to adverse weather or abnormal route Q.5-1
conditions. The early dispatch of the VANS vehicles at the Alert stage will provide further margin.
In addition, backup VANS will be available at or near Seabrook Station to provide acoustic coverage for a primary VANS vehicle failure.
Helicopter alerting is also available as a backup and is delineated in the response to Question 9.
l l
t q.5-2
QUESTION NO. 6 Comparison of locations of VANS (approximately 22 vehicles) and prior pole mounted strens (approximately 46), showing how the coverage on the two systems matches up.
(Map submitted on 02/26/88 is not sufficiently readable). Alternatively, provide detailed information specified in NUREG-0654, Appendix 3, Section C.3 for VANS with or without field survey, as appropriate.
RESPONSE *
- 10. 6 The original sirens in Massachusetts were various models rated no higher than 123 dBC at 100 feet; the VANS utilizes a dual Whelen Model l
WS-4000 sirew system rated at 134 dBC at 100 feet. The increased siren rating allows substantially greater coverage, thus reducing the number of sirens required.
Fourteen (14) acoustic locations were optimized af ter the Whelen siren system was field-tested by Wyle Laboratories to i
verify siren rating. Wyle Laboratoties utilized the daca from the field test in a computerized sound propagation model to calculate the 70 dBC and 60 dBC contours for the acoustic locations selected.
See Figure 6-1 for the preliminary results.
If some areas require enhanced coverage, an assessment will be made as to the most effective way to provide the needed coverage.
This could include additional sirens or tone alert radios.
Acoustic measurements may be recorded in the areas to determine if ambient backg-ound sound levels are covered by at least 10 dBC dissonant.
e Q.6-1 i
. QUESTION NO. 7 The means for conforming with guidance criteria regarding a siren signal of 3-5 minutes and capable of repetition.
For the beach areas, include description of the capability for a voice message in addition to the tone signal.
RESPONSE TO NO. 7 The VANS design incorporates a dual Whelen Model WS-4000 siren system that is capable of repetitive remote or manual activation for 3-5 minutes.
The sirens are powered by batteries and an onboard generator which will allow the sirens to be capable of repetitive activation as necessary in response to a Station emergency.
The siren system ie capable of remote "voice message" operation.
The scope of voice operation for the beach areas will be consistent with the concept of operatione described in the SPMC.
Q.7-1
QUESTION NO. 8 A siren testing frequency that is consistent with NUREG-0654 and Volume 6 of the New Hampshire Radiological Emergency Response Plan, "Final Design Report on the Seabrook Public ANS".
RESPONSE TO NO. 8 The VANS sirens will be tested at the same interval as the New Hampshire pole-mounted sirens which is consistent with guidelines provided in FEHA-REP-1 (see Reference below).
l REFERENCE NUREG-0654/FEHA-REP-1, Rev. 1. November 1980, Appendix 3, "Critoria for Preparation and Evaluation of Kadiological Emergency Response Plaac and Preparedness in Support of Nuclear Power Stations".
1 l
keb")
I
i QUESTION NO. 9 The conditions and procedures for the use of-the helicopter alerting system as a backup to che VANS.
RESPONSE TO NO. 9 7
The airborne alerting system consists of a helicopter based and staffed 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> a day at Seabrook Station.
This alerting system will be used as a secondary backup to the VANS.
At the Alert emergency classification or higher, the VANS vehicles are dispatched to their acoustical locations and the helicopter is placed on standby.
If any VANS primary vehicle f ails, a backup VANS vehicle will be dis-patched to the acoustic location. However, if a backup VANS vehicle f alls to reach the specific acoustic location, the helicopter will be launched to provide required acoustic coverage for that area.- The SPMC will contain the implementing procedure for activating the helicopter alerting system portion of the VANS.
f I
i l-1 I
I Q.9-1 t
,. ~ - - _ _ -.,. _.. _.,, _,.... ~.
-)