ML18046B240
| ML18046B240 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 01/25/1982 |
| From: | Johnson B CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| NUDOCS 8202020123 | |
| Download: ML18046B240 (28) | |
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consumers Power company General Offices: 212 West Michigan Avenue, Jackson, Ml 49201 * (517) 788-0550 January 25, 1982 J G Keppler, Administrator Region III US Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 DOCKEI' 50-255 - LICENSE DPR
- PAGISADES PLANT -
PROMPT NOTIFICATION SYSTEM ADDITIONAL INFORMATION HRC letter dated December 7, 1981 requested additional information oh the Palisades Prompt Notification System.
These requests are as follows:
- 1.
How many sirens to be installed and the rating?
- 2.
Maps of siren locations.
- 3.
Percent of population that will be notified in 15 minutes.
- 4.
How people, who do not hear the initial signal will be notified.
In response to these requests, Consumers Power Company is providing the attached description of the Palisades Public Warning System.
This description provides all the requested information plus details regarding system control and activation. Please note that the referenced appendices are not included but are available upon request if needed for your information.
Brian D Johnson Senior Licensing Er_igineer CC Director, Office of Nuclear Reactor Regulation Director, Office of Inspection and Enforcement NRC Resident Inspector - Palisades ATTACHMEi'il"TS a20202012a-a2012s --- - --
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1 I.
INTRODUCTION REQUIREMENT The Nuclear Regulatory Commission requires all functional, nuclear-powered electric generating plants to implement a Public Warning System capable of alerting the public within the nuclear plant's Emergency Planning Zone.
System capabilities as outlined in NUREG-0654 require that the following criteria be met prior to Nuclear Regulatory Commission approval:
- The Public Warning System must be capable of providing a warning signal and instructional message.to the population on an area wide basis throughout the ten-mile radius Emergency Planning Zone within 15 minutes.
- The initial notification must insure direct coverage of essentially 100 percent of the population within five miles of the plant.
100 percent of the population within the ten-mile radius Emergency Planning Zone must receive notification within 45 minutes.
The Public Warning System design should consider the demography and topography of the Emergency Planning Zone.
The system design criteria should have a sound level target of 10 dB above the average daytime ambient noise level in the Emergency Planning Zone.
The Public Warning System should include the capacity for local and state agencies to provide information over television and radio stations at the time a system alert is given.
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2 PURPOSE The Palisades Public Warning System provides a means to alert the public in a geographic region inland from the Palisades Nuclear Power Plant as specified by the Nuclear Regulatory Commission and outlined in Section 1.1 of this report.
The system is capable of alerting 100 percent of the public within a 200° section to the east of the Palisades Nuclear Power Plant.
Each of the siren/PA units is controlled by a radio signal activated by control centers located in Covert Township, the City of South Haven, and the Sher~ff's Department in Paw Paw, Michigan.
SYSTEM CAPABILITIES The Palisades Public Warning System is capable of providing an alert signal and instructional message to the population throughout the ten-mile radius Emergency Planning Zone within 15 minutes.
Backup power insures normal operation in the event of a power outage.
Specific population groups are alerted by the selective activation of all siren units, geographically related siren units or individual sirens.
The system is controlled by three separate control points:
- South Haven Police Department (encoder, transmitter and status map) rp0981-0609b-22-46
- Covert Fire Department (encoder, transmitter and status map)
- Paw Paw Sheriff's Department (encoder, status map and dedicated control line to Covert transmitter)
Each siren/PA unit is capable of four different modes of operation:
- Public Warning Signal
- Local Alert Signal
- National Attack Signal
- Public Address The system is capable of automatic operation through the use of pre-recorded activation tapes.
- Public warning receivers are employed in facilities where high ambient noise levels preclude notification by the siren system.
The public warning receivers are activated by the system control points and are capable of visual signaling as well as instructional messages.
rp0981-0609b-22-46
4 II.
DEFINITIONS Activating Agency - The agency that activates the system (in whole or in part).
Ambient Noise Level - Average noise level surrounding a specific area.
Decibel (dB) - A unit used to express a relative difference in power, usually one-tenth the common logarithm of the ratio of the two levels.
Encoder - An electronic device capable of generating audio signals for the purpose of activating siren/PA units.
EPZ (Emergency Planning Zone) - The region within a given radius immediately surrounding a nuclear power plant.
Section 1/2° pie-shaped portion of a circle.
Segment - Annulus within a section.
Siren/PA - An electronic device capable of generating a siren sound and reproducing voice message information.
Stations - Siren/PA site locations.
Status Map Board - Displays status of each siren/PA unit and control center.
Trisection - Three adjacent sections.
Trisegment - Three adjacent segments.
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III.
OPERATIONAL AUTHORIZATION AND COMPLIANCE AUTHORIZATION The authority to operate the Palisades Public Warning System is de-scribed in Annex B (Warning) to Michigan Emergency Preparedness Plan with Appendix 1 (Nuclear Facilities Procedures), which is included in this document as Appendix F.
System Control 5
The Palisades Public Warning System is under the administrative control of the Van Buren County Emergency Preparedness Coordinator with direct control at the three system control points.
He is responsible for the dissemination of public information preceding all system tests.
Such tests will be monitored and documented as described in 6.1.1.
The following officials possess the authority to order the emergency activation of the Palisades Public Warning System:
Van Buren County Emergency Preparedness Coordinator Van Buren County Sheriff The Covert Township Supervisor and Chief of the Fire Department The South Haven Emergency Preparedness Director, the City Manager and the Chief of Police The Commander of the South Haven State Police Post rp0981-0609d-22-46
The Emergency Preparedness Coordinators for Allegan and Berrien Counties, or the respective Chairman of the Board of County Commissioners, or their designated representatives may request activation of that portion of the system which lies within their county.
The request would be directed to the Van Buren County Sheriff's Department in Paw Paw.
Local governments within Allegan and Berrien Counties may request activation of their local portion of the system by contacting their County Sheriff Department.
Activation The system may be activated only by properly trained personnel.
THE SYSTEM MAY BE ACTIVATED FOR THE PURPOSE OF WARNING AND NOTIFYING THE PUBLIC OF AN EMERGENCY CONDITION AFFECTING THE PUBLIC HEALTH AND SAFETY AND SCHEDULED TESTS ONLY.
rp0981-0609d-22-46 UNAUTHORIZED OPERATION OF THE PUBLIC WARNING SYSTEM WILL RESULT IN PROSECUTION TO THE FULLEST EXTENT OF THE LAW 6
COMPLIANCE The operation of the Public Warning System is in compliance with established Federal, State and local acts and statutes.
Nuclear Regulatory Commission/Federal Emergency Management Administration The system design is in compliance with the following NRC and FEMA requirements:
- Nuclear Regulation 0654 as amended
- Federal Emergency Management Administration - REP-1 Federal Communications Commission 7
The operation of the radio control system for the Public Warning System is in compliance with FCC Rules and Regulations Part 90 governing the use of secondary signaling in the public safety radio band.
Local Regulations The Public Warning System is in compliance with all known local regulations for public warning systems and noise levels.
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8
'IV.
EQUIPMENT FUNCTIONS AND CAPABILITIES SIREN/PA UNITS The Palisades Public Warning System consists of 84 pole-mounted speaker assemblies'* 43 of which are omnidirectional and 41 of which are rotating.
The omnidirectional units have 16 speakers arranged in 4 columns of 4 speakers, each column being separated by 90 degrees to provide the desired 360-degree coverage.
The rotating units have a single column of 16 drivers mounted on a rotating platform.
A radio receiver, tone generator, audio amplifier and continuous-duty power supply are contained in an equipment cabinet mounted near the base of each pole.
Each siren/PA unit is a completely solid-state device deriving its power from self-contained lead-acid storage batteries which are
- continuously charged from a 120 V ac line source.
This assures normal operation of the unit for up to 30 minutes during power outages.
The control cabinet houses the following items:
Power Amplifier Module:
Eight units supply high-level audio signals to the speaker array.
Each unit delivers 200 watts rms in PA mode and 250 watts rms in siren mode.
In the siren mode, this produces a 115 dB(A) sound level at 100 ft for the omnidirectional units and 124 dB(A) at 100 ft for the rotating units.
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9 Tone Generator Module:
Produces tones used in the warning system:
wail, hi-low, and alert.
Also shuts down siren/PA unit automatically after approximately 3-1/2 minutes.
Radio Receiver and Tone Decoder:
Receives radio signals broadcast from system control centers.
Checks for proper frequencies and codes.
Instructs tone generator to activate proper (requested) function.
Batteries and Battery Charger:
Recharges the batteries after system activation, trickle charges the batteries during standby modes, and supplies power to siren/PA unit during operation.
Rotor Control Module (WS-3000s only):
Receives input from the decoder and tone generator and controls the siren's rotation (oscillation, direction commands and braking).
ENCODER Addressing The Palisades Public Warning System encoder is an electronic device capable of addressing up to 10,000 individual siren/PA units in addi-tion to the selection of up to 10 functions at each location.
The encoded signal is comprised of a series of six digits of which the first four are the address code of the selected remote stations.
Each siren/PA station must receive its preassigned address code in the proper sequence.
For example, if the decoder address code is 2503, the rp0981-0609e-22-46
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10 first digit, the number two, must be received first, then the five, the zero, and then the three.
If the address code is sent out of order, the decoder will reject it. The fifth digit is-a preprogrammed control digit designed to permit special addressing functions; ie, selective status board activation.
If the fifth digit is incorr~ct, the address will be rejected.
The sixth digit is the command function which controls the operational mode of the equipment; ie, Public Warning Siren or PA.
Up to 10 different operational modes may be selected by momentary push-button _switches.
To make the encoder more flexible, an all-call number can be substi-tuted for each digit in the address.
The address is selected by means of four thumb-wheel switches on the encoder.
Each switch has 11 positions, 0 to 11.
Position 11 is used as the all-call number.
If all four switches were placed in.!l-11-11-11, all stations would respond to this address.
If the switches were set up for ~-~-Q-.!l, all those stations that have an address with the first three numbers of 250 would respond.
If the switches were set up for ~-11-Q-11, all stations that have a 2 for the first digit and a 0 for the third digit of the address would respond.
The rest of the stations would not respond be-cause of an invalid address.
By using the substitute number, the stations can be selected, by group, or may be selected by transmitting a single command.
Various combinations can be used depending upon the size and geographical layout of the system.
Figures lA through lD illustrates different address combinations that permit the selection of different siren/PA unit combinations.
rp0981-0609e-22
33 RADIUS 10
' 32 JI FIG. IA SEGMENTS ALL STATIONS IN A SEGMENT ADDRESS CODE 2-2-7-11 SECTIONS T, r RADIUS SECTIONS 0
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/SECTIONS 12 SINGLE SECTION ADDRESS CODE l-J-11-11 SECTION----T T
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STATIONS 'AL~.....----...1 21 TRI SECTION ADD~ESS CODE 3-11-11-11 SECTION I 4 f SECTION ~Alt I
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FIG.18
11 (Fig lA) above shows a system that is divided into 16 sections, each being 22-1/2 degrees.
Each section is divided into 10 segments.
The first and second digits of the address are assigned to the 16 different sections.
The third digit of the address is assigned to the segments or radial distance from the center.
The fourth digit of the address code is assigned to a station located in a segment.
There can be up to 10 remote stations in any segment.
(Fig lA) shows the address code to access a single station. Station Number 3 located in Segment 8 of Section 13 is identified.
The first two. address switches are set for 13, the section desired.
The third address switch is set for 8, the segment desired.
The fourth address switch is set for 3, the station desired.
The address switches on the encoder should now read 1-3-8-3.
This will access only that station.
If a whole segment is desired, the last number is substituted with a Number 11 on the address switch.
Also shown in (Fig lA) is the selection of one segment.
The fourth segment in Section 22 is desired and all stations assigned to that segment.
The encoder address switches are set to read 2-2-7-11.
The first two digits are the section desired.
The third digit is the segment desired.
The fourth digit is an 11, so all stations in that segment will be accessed.
(Fig lB) illustrates the selection of a section and a trisection of the system.
In selecting a section (ie, 13), the first two digits of the address code are set for 1-3.
The third and fourth digit numbers are rp0981-0609e-22
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'1ADIUS ALL SECTIONS AOORESS CODE 11-11-11-11 SECTION "ALL
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12 substituted with the Number 11.
Thus, the address code to select all stations in Section 13 is l-1-11-11.
In selecting a trisection of the system (ie, 2), the first digit of the address is set for 3, the third trisection.
The remaining three digits of the address are set with the Number 11 or all call.
The address now reads 3-11-11-11.
All stations in the second trisection will now be accessed.
The system can also be accessed in a 16-segment (annulus) of a 3-segment basis.
(Fig lC) illustrates this selection.
All stations in a system may be accessed by substituting the Number 11 for all address numbers.
By programming the address code switches with the numbers 11~11-11-11, all stations will be accessed (Fig lD).
The WS-3000 rotating siren units in the 5-to 10-mile zone can be addressed separately from the WS-2000 units in the 0- to 5-mile zone by substi-tuting a 6 for the third address digit.
Command Functions Ten momentary push-button switches on the encoder control the operational mode of the system.
These switches alter the sixth digit of the encoded signal and are designated as follows:
TAPE - Sends a "clear" signal to all siren units addressed, initiates the tape player and places cassette player in control of entire system.
(Only used with prerecorded activation tapes.)
PA - (Public Address)
Places all siren units addressed into the Public Address mode and activates all public warning receivers.
rp0981-0609e-22-42
LOC ALT - (Local Alert)
Places all siren units addressed into the Local Alert Siren mode but does not affect the public warning receivers.
The sirens will produce a "Hi-Lo" siren sound and the WS-3000 units will oscillate.
13 PUB WRN - (Public Warning)
Places all siren units addressed into the Public Warning Siren mode but does not affect the public warning receivers.
The sirens will produce a steady siren sound and the WS-3000 units will oscillate.
NAT ATK - (National Attack)
Places all siren units addressed into the National Attack Siren mode but does not affect the public warning receivers.
The sirens will produce a wailing siren sound and the WS-3000 units will oscillate.
HOME STAT - (Home/Control Center Status)
A two-function switch which either:
(1) commands the addressed WS-3000 units to home position* and clears addressed WS-2000 units, or (2) actuates control center indicator light (System Status Display on Status Map Board) when correct control center address is entered.
90° - Commands all WS-3000 siren units addressed to rotate to the 90° position (90° clockwise from the Home position), clears addressed WS-2000 units.
Does not affect public warning receivers.
180° Commands all WS-3000 siren units addressed to rotate to the 180° position (180° clockwise from the Home position).
Clears addressed WS-2000 units.
Does not affect public war~ing receivers.
rp0981-0609e-22-42
14 270° - Commands all WS-3000 siren units addressed to rotate to the 270° position (270° clockwise from the Home position).
Clears addressed WS-2000 units.
Does not affect public warning receivers.
CLR - (Clear)
Places all siren units addressed in the Standby mode and clears all previous commands to addressed siren units.
Does not affect public warning receivers.
- HOME position is defined as 90° clockwise from a line pointing away from the nuclear power plant and passing through the siren site in question.
Home position is not the same for all units nor is it geographic north (see Appendix E).
Each of the above ten command functions supersedes any prior commands.
If "PUB WRN" is sent to a siren unit followed by "270°," the siren unit will enter the Public Warning mode, clear and rotate to the 270° position and shut down.
CASSETI'E PLAYER The cassette player is used in conjunction with the activation tapes.
Once an activation tape has been properly loaded into the player (see Section 4.3.1) and the cassette player "PLAY" button is depressed, the cassette player is controlled by the encoder.
(NOTE:
The cassette player will not start until "TAPE" and double "SEND" or "PRE-CHK" is entered into the encoder.)
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15 NOTES:
The "PAUSE," "RECORD," "REVIEW" and "CUE" controls have been locked and are not functional.
The cassette player volume control should be adjusted to a normal listening level.
This control does not affect the actual siren/PA levels.
The cassette player door should be closed when not in use to prevent dust and dirt from entering the player's mechanism.
Do not store activation tapes in the cassette player.
Activation tapes must*be placed in their correct cases and stored in the correct cassette tray slot when not in use.
- Cassette player maintenance will be performed by Consumers Power Company.
Do not attempt to clean the player.
The cassette player is designed for use with the Public Warning Sys-tem only.
It will not function as a normal cassette player. It will not record activation tapes, nor can it erase tapes.
Activation Tapes Each Public Warning System Control Center is equipped with prerecorded activation tapes.
Each tape is programmed for a certain siren function:
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16
- System Demonstration (White)
Presents system capabilities and functions through the status map board and instructional audio track.
The demonstration is performed in the precheck mode.
- Monthly Test (Black)
Used for monthly tests of the Public Warning System.
Activates all sirens and public warning receivers in system and includes "Public Warning" signal and "PA" function tests (see 6.1).
- Tornado Warning (Yellow)
Used for notifying the public of a tornado warning (funnel cloud or tornado actually sighted).
Activates all sirens and public warning receivers in the system.
- Severe Weather Warning (Blue)
Used for notifying the public of a severe weather warning (severe weather imminent).
Activates all sirens and public warning receivers in the system.
- Local Alert (Green)
For use in the event of a local emergency (train derailment, gas leaks, fires, etc).
Only sirens surrounding the initiating stations will generally be activated (Covert and South Haven only).
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17
- Nuclear Emergency (Orange)
Used in the event of a nuclear-related emergency.
Activates all si-rens and public warning receivers in the system.
- National Attack (Red)
Used in the event of a national attack.
Activates all sirens and warning receivers in the system.
Each tape is recorded on both sides and contains all signalling needed to produce the given warning.
Arrows printed on the tape leader indi-cate the correct loading position.
Arrows must point upward when the activation tape is loaded into the cassette player.
WARNING:
IF TAPES ARE LOADED WITH ARROWS POINTING DOWN, THE PUBLIC WARNING SYSTEM WILL NOT ACTIVATE.
If arrows are not visible, insert a pen into the cassette hub and gently wind tape onto the supply reel (reel with most tape).
Tapes are cut to minimum length so rewinding tapes after use is not required.
CAUTION:
DO NOT EXPOSE THE ACTIVATION TAPES TO HEAT, EXCESSIVE SUN-LIGHT OR MAGNETIC FIELDS.
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18 ALWAYS RETURN THE TAPES TO THEIR CASES AND STORE THEM IN THE CASSETTE TRAY WHEN NOT IN USE.
DO NOT LEAVE ACTIVATION TAPES IN THE CASSETTE PLAYER.
STATUS MAP BOARD The status map board is designed to display the status of each siren/PA unit and Control Center.
Light assemblies to the rear of the Plexiglass sandwiched, mylar map board identify the geographic location of each siren/PA unit and the service status of the Control Centers.
Each of the siren/PA light assemblies consists of four different colored lamps that identify the different siren/PA functions.
White
- Public Address Mode
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Green
- Local Alert Siren Mode
- Orange - Public Warning Siren Mode Red
- National Attack Siren Mode When a specific siren/PA address/function is transmitted, the corresponding map lights on all Control Center status map boards are activated.
This identifies to each Control Center.that specific siren/PA units have been activated in a specific operational mode.
When the operational mode is changed, the status light color will change for each siren/PA location.
At the end of the system activation rp0981-0609e-22-46
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all status lights will extinguish with the transmission of a 11CLR 11 11ALL 11 11 SEND" s igna 1.
The transmission of a precheck signal from an encoder will activate only the lamps on the status board of the initiating Control Center.
This allows a check of encoder operation and provides a visual indication of the entered address.
19 System status is displayed in the upper left of the status mapboard.
Should a Control Center be unable to activate the system, the transmis-sion of the Control Center status code will activate the specific Control Center status light on all status mapboards.
The light will remain activated until cleared by the initiating agency.
Above the Control Center status lights is the "ACTIVATION" light.
This light is on whenever the Control Center transmitter is keyed by the encoder.
THIS LIGHT SHOULD NOT BE ON DURING ROUTINE (NONWARNING SYSTEM) TRAFFIC.
THIS LIGHT SHOULD NOT BE ON DURING PRECHECK.
When the warning system is under the control of an activation tape (in the 11SEND 11 mode, not 11PRECHECK 11 ), the 11ACTIVATION 11 light will remain on until the activation tape is complete and 11RST 11 is pressed.
When the warning system is in the manual mode, the "ACTIVATION" light will remain on only for short periods of time (for data burst transmission and voice messages).
Below the system status display is the "Rotating Siren Position" star.
This star indicates the last position command which was issued to the rp0981-0609e-22-46
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20 WS-3000 units.
The star also displays the WS-3000 oscillation sequence.
The "Rotating Siren Position" star is referenced in degrees, "HOME" position at the top, 180° at the bottom, etc.
PUBLIC WARNING RECEIVERS The Public Warning System incorporates public warning receivers in locations of high ambient noise levels.
Each receiver is activated automatically by the Public Warning System during these activation tapes only:
National Attack Warning (Red)
Nuclear Emergency (Orange)
Tornado Warning (Yellow)
Severe Weather Warning (Blue)
Monthly System Test (Biack)
Several public warning receivers turn on external alerting devices that operate from a 120 V ac power source.
The receivers, however, function normally on built-in battery power during power outages.
The initiating Control Center will broadcast specific geographic infor-mation and radio station identification over the public warning receiv-ers during the period of actual siren operation.
rp0981-0609e-22-46
21 Additional information describing the type of warning will be simulta-neously broadcast over the public* address system and the public warning receivers when the siren/PA units are in the PA mode.
A specific set of operating instructions is included with the warning receivers and is presented in Appendix D along with public warning receiver liability forms and a receiver location list.
rp0981-0609e-22-46