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UNCLAS //N08272//ACTION ADDEES OF AIG 11225 TAKE FOR INFO ONLY//
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SUBJ/CG 47 CLASS ADVISORY NR. 04-97, HERP-HERO GUIDANCE//
REF/A/RMG/AEGIS PROG MGR/211139ZJUN94//
REF/B/DOC/DOD/-//
REF/C/RMG/AEGIS PROG MGR/271409ZMAR92//
REF/D/DOC/NAVSEA/-//
REF/E/RMG/PEO SC-AP/171753ZJUN97//
NARR/REF A IS CG 47 CLASS ADVISORY NR. 07-94. REF B IS DODINST
6055.11. REF C IS CG 47 CLASS ADVISORY NR. C001-92. REF D IS OP
3565, VOL II, PART 1, SIXTH REVISION. REF E IS CG 47 CLASS
ADVISORY NR. C001-97.//
RMKS/1. THE PURPOSE OF THIS CLASS ADVISORY IS TO MODIFY THE GUIDANCE
CONTAINED IN REF A REGARDING HAZARDS OF ELECTROMAGNETIC RADIATION TO
PERSONNEL (HERP) AND HAZARDS OF ELECTROMAGNETIC RADIATION TO ORDNANCE
(HERO) DURING CG 47 CLASS SHIP OPERATIONS AND MAINTENANCE. THIS
ADVISORY SUPERSEDES AND CANCELS REF A. IT INCORPORATES THE FOLLOWING
CHANGES TO REF A:
A. REF B HAS BEEN REVISED TO CHANGE THE PERMISSIBLE EXPOSURE
LIMIT (PEL) FOR CERTAIN RADAR FREQUENCIES, AND TO REDEFINE RF
ENVIRONMENTS AS CONTROLLED AND UNCONTROLLED INSTEAD OF UNRESTRICTED
AND RESTRICTED. NSWCDD HAS RECALCULATED THE HERP SAFE DISTANCES FOR
RADARS BASED ON THE REVISED PELS AND THE MOST CURRENT INFORMATION ON
RADAR CHARACTERISTICS. THESE RECALCULATED HERP SAFE DISTANCES HAVE
BEEN SUBMITTED FOR INCLUSION IN AN UPDATE TO OP 3565 VOLUME 1. THIS
ADVISORY REFLECTS THOSE CHANGES BY CHANGING THE HERP SAFE DISTANCES
FOR SOME RADARS, AND BY DELETING REFERENCES IN PARA 2 AND 3.B.(1) TO
UNRESTRICTED AND RESTRICTED SAFE SEPARATION DISTANCES.
B. A HERP SAFE DISTANCE FOR THE SPY BURNTHROUGH MODE IS ADDED.
C. THE GUIDANCE ON SPY RADIATION IN PORT IS CLARIFIED.
(1) IT HAS BEEN DETERMINED THAT IT IS NOT NECESSARY TO HAVE
TRANSMITTER QUADRATURE ALIGNMENT WITHIN PMS LIMITS IN ORDER TO SAFELY
RADIATE TOWARD ZENITH. THAT REQUIREMENT HAS BEEN DELETED.
(2) NEW SPY COMPUTER PROGRAM INPORT RADIATION PATCHES
(UYK-7) AND PATCH SETS (UYK-43) ARE BEING PROVIDED WITH NEW COMPUTER
PROGRAM DELIVERIES. THESE PATCHES CLAMP RADIATION AT 75 DEGREES
ELEVATION. FOR AN/SPY-1A ONLY, A PATCH WILL ALLOW LOW POWER
RADIATION WHILE IN ACTS TRAINING MODE. SPY HIGH POWER REMOTE
OPERATION INPORT IS ALLOWED WHEN THE NEW HIGH POWER PATCH IS USED.
CHECK YOUR COMPUTER PROGRAM DESCRIPTION DOCUMENT TO DETERMINE IF YOU
HAVE THE NEW INPORT RADIATION PATCHES AND THE NAMES OF THESE PATCHES.
(3) A CAUTION TO CHECK WITH PORT AUTHORITIES BEFORE SPY LOW
POWER RADIATION IN PORT (WITHOUT USING THE NEW LOW POWER PATCH) IS
ADDED.
D. THE REF B REVISION ALSO INVOKED LIMITS FOR INDUCED AND
CONTACT CURRENTS THAT FLOW THROUGH THE BODY WHEN A PERSON IS IN A
RADIATION FIELD. A RADHAZ SURVEY CONDUCTED ON USS ANTIETAM
IDENTIFIED CONTACT CURRENT HAZARDS ON THE BRIDGE WINGS, AND THESE
ARE INCORPORATED IN PARA 3.A.
E. HERP INFORMATION ON THE CEC TRANSMITTING ANTENNA HAS BEEN
ADDED.
F. HERO GUIDANCE HAS BEEN REVISED AS A RESULT OF RECENT HERO
SURVEYS ON CG 47 CLASS CRUISERS. GUIDANCE IS ADDED FOR THE HARPOON
MISSILE AND IS DELETED FOR THE ASROC MISSILE. THE HERO-SUSCEPTIBLE
VERSION OF ASROC IS NO LONGER IN THE FLEET.
NOTE: THIS IS INTENDED TO BE THE LAST ISSUE OF THIS CLASS
ADVISORY IN ITS CURRENT FORM. THE INFORMATION IN THIS CLASS ADVISORY
WILL BE INCORPORATED INTO THE CSOSS MASTER PROCEDURE, MP6/CS "MASTER
RADHAZ MANAGEMENT CHECKLIST", WHOSE FORMAT ALLOWS THIS INFORMATION TO
BE PRESENTED IN A MORE UNDERSTANDABLE MANNER. FUTURE ISSUES OF THIS
CLASS ADVISORY WILL CONTAIN ONLY NEW OR UPDATED INFORMATION WHICH IS
NOT IN THE CURRENT ISSUE OF CSOSS ISSUED TO EVERY SHIP OF THE CLASS.
2. BACKGROUND. CG 47 CLASS SHIPS HAVE SEVERAL RADAR SYSTEMS CAPABLE
OF GENERATING HIGH LEVELS OF RF ENERGY. REF B SPECIFIES PERMISSIBLE
EXPOSURE LIMITS (PELS) FOR PERSONNEL EXPOSURE TO RF RADIATION FOR
CONTROLLED AND UNCONTROLLED ENVIRONMENTS. THE WEATHER DECK AREA OF
THE SHIP IS CONSIDERED A CONTROLLED ENVIRONMENT. INPORT, THE AREA
BEYOND THE WEATHER DECK IS CONSIDERED AN UNCONTROLLED ENVIRONMENT.
PELS FOR CONTROLLED ENVIRONMENTS ARE THE BASIS FOR THE HERP GUIDANCE
AND SAFE SEPARATION DISTANCES USED IN THIS ADVISORY, EXCEPT FOR THOSE
RADARS WHOSE SAFE SEPARATION DISTANCES EXTEND BEYOND THE BOUNDARIES
OF THE SHIP. FOR THOSE RADARS THE PELS FOR UNCONTROLLED ENVIRONMENTS
ARE THE BASIS FOR INPORT SAFE SEPARATION DISTANCES. SOME ELEMENTS OF
ORDNANCE USED IN CG 47 CLASS SHIPS ARE SUSCEPTIBLE TO RF ENERGY.
THROUGH A COMBINATION OF PERSONNEL ACCESS CONSTRAINTS, RADIATION ZONE
CONTROL, OUTPUT POWER CONTROL AND MAINTENANCE OF SAFE SEPARATION
DISTANCES, HERP AND HERO PROBLEMS CAN BE PREVENTED. CONTROL FEATURES
INHERENT IN THE VARIOUS RADAR SYSTEM DESIGNS, WITH STRICT PROCEDURE
IMPLEMENTATION, CAN PROVIDE EFFECTIVE RF SAFETY WITH MINIMAL
OPERATIONAL IMPACT.
3. ACTION. THE PROCEDURES CONTAINED HEREIN MUST BE ADHERED TO IN
ORDER TO PROVIDE PROPER SAFETY MARGINS FOR PERSONNEL AND ORDNANCE
MATERIALS.
A. HERP PRECAUTIONS IN PORT:
(1) AN/SPY-1A/B/B(V). HIGH POWER RADIATION IN PORT IS
PERMITTED ONLY TOWARD THE ZENITH. HIGH POWER RADIATION IN PORT MAY BE
PERFORMED ONLY WHEN THE TRANSMITTER IS IN MAINTENANCE MODE UNDER
LOCAL CONTROL, OR WHEN IN REMOTE CONTROL AND THE NEW HIGH POWER PATCH
IS USED TO CLAMP RADIATION AT 75 DEGREES IN ELEVATION. ADDITIONALLY,
SHIPS WHICH DO NOT HAVE THE NEW INPORT RADIATION PATCHES MAY PERFORM
HIGH POWER RADIATION IN PORT FOR THE FOLLOWING TESTS USING THE
PROCEDURES SPECIFIED BELOW:
(A) AN/SPY-1A/B/B(V): MIP 4560/501, MRC FKFQ (2D-1)
(EII 1.12.X.7.9Y, X EQUALS 1-4, Y EQUALS 0-9) TRANSMITTER PHASE
AND POWER TESTS OF THE FOUR ARRAYS.
(B) AN/SPY-1A: EII 1.12.Y.7.22, OPERATIONAL PERFORMANCE
TEST MTI WAVEFORM PHASE STABILITY TEST (Y EQUALS 1,3).
AN/SPY-1B/B(V): EII 1.12.5.2.Y, MTI TRANSMITTER
STABILITY TEST (Y EQUALS 1,4).
(C) AN/SPY-1A: EII 1.12.1.7.3Z AND 1.12.3.7.3Z, MISSILE
UPLINK MONITOR TESTS (Z EQUALS 1,3,5,7,9).
AN/SPY-1B/B(V): EII 1.12.5.3.3Z AND 1.12.5.4.3Z,
MISSILE UPLINK TEST (Z EQUALS 0-9).
THESE TESTS MAY BE CONDUCTED IN PORT USING THE FOLLOWING PROCEDURES
TO PLACE THE BEAM AT THE ZENITH. (NOTE: THESE PROCEDURES MUST BE
FOLLOWED REGARDLESS OF WHETHER AT-SEA OR INPORT DISK SETS ARE USED)
PRIOR TO INITIALIZATION AT THE OPERATIONAL READINESS TEST SYSTEM
(ORTS) CONSOLE PERFORM THE FOLLOWING:
(1) AT THE RADAR SYSTEM CONTROLLER (RSC) CONSOLE IN
BASELINE CONTROL:
(A) VERIFY NO SECTORS OR RADIATION CONTROL
REGIONS.
(B) PLACE SEARCH ELEVATION TO ZERO DEGREES.
(C) HORIZON SEARCH OFF.
(D) SEARCH MODE NORMAL.
(2) AT THE AN/SPY-1A/B AN/UYK-7 COMPUTER,
POSITION 7 STOP TO THE UP POSITION ON BOTH BAY 3 AND 4.
(3) AT THE AN/SPY-1B/B(V) AN/UYK-43 COMPUTER:
(A) POWER DOWN MEMORY UNIT 9 FROM THE COMPUTER
DCU.
(B) ON BOTH CPU 0 AND CPU 1 SET THE 6 STOP AND
7 STOP BUTTONS TO ON AT THE COMPUTER DCU.
AN/SPY-1A/B/B(V) OPERATION IN MAINTENANCE MODE UNDER LOCAL CONTROL,
IN REMOTE CONTROL WHEN USING THE NEW HIGH POWER PATCH, OR USING THE
ABOVE PROCEDURE ALLOWS RADIATION ONLY TOWARD THE ZENITH POSITION.
FOR THESE OPERATIONS, THE HAZARDOUS ZONE IS BOUNDED BY THE BOTTOM OF
THE ARRAY, 10 FEET TO EACH SIDE OF THE ARRAY CENTERLINE OUT TO A
DISTANCE IN FRONT OF THE ARRAY OF 45 FEET FOR AN/SPY-1A AND 10 FEET
FOR AN/SPY-1B/B(V), AND 530 FEET ABOVE THE ARRAY FOR AN/SPY-1A AND
350 FEET ABOVE THE ARRAY FOR AN/SPY-1B/B(V). THE HAZARDOUS ZONE
BOUNDARIES ARE THE SAME WHEN RADIATING TO ZENITH IN LOW POWER, EXCEPT
THAT THE HAZARDOUS ZONE EXTENDS TO ONLY 10 FEET ABOVE THE ARRAY.
PERSONNEL IN CRANES AND OTHER SHIPYARD EQUIPMENT SHOULD NOT WORK
DIRECTLY ABOVE THE ARRAYS WHEN THEY ARE RADIATING. PERSONNEL MUST BE
WARNED NOT TO LEAN OVER RAILS ABOVE THE ARRAY FACES.
FOR PMS TESTING REQUIRING RADIATION FROM THE STARBOARD AND/OR
PORT ARRAY, NESTED SHIPS SHOULD BE ADVISED TO KEEP PERSONNEL OUTSIDE
THE HAZARDOUS ZONE OR INSIDE THE SKIN OF THE SHIP. MOST PMS TESTING
CAN BE CONDUCTED USING THE FORWARD AND AFT ARRAYS, THEREBY MINIMIZING
THE TIME PERIOD FOR RESTRICTED ZONES ON THE ADJACENT SHIP.
THE HELICOPTER LIGHTING SERVICE PLATFORM ALLOWS PERSONNEL ACCESS
TO A HERP ZONE DIRECTLY IN FRONT OF THE AFT ARRAY FACE. THE ACCESS
IS NORMALLY BARRICADED, BUT STRINGENT PROCEDURES MUST BE IMPLEMENTED
TO PREVENT PERSONNEL FROM UNKNOWINGLY ACCESSING THE AREA WHEN THE
RADAR IS ACTIVE.
LOW POWER RADIATION IN PORT IS PERMITTED WHEN USING THE NEW LOW
POWER PATCHES TO CLAMP RADIATION AT 75 DEGREES ELEVATION. IF LOW
POWER RADIATION IN PORT IS PLANNED WITHOUT USING THE NEW INPORT
RADIATION PATCHES, RADIATION MUST BE RESTRICTED TO CLEAR SECTORS AND
AUTHORIZATION FROM THE LOCAL AREA AUTHORITY AND FREQUENCY COORDINATOR
IS REQUIRED. DURING SEARCH AND TRACK OPERATIONS IN LOW POWER IN
PORT, THE MINIMUM SAFE SEPARATION BETWEEN THE AN/SPY-1A/B/B(V) ARRAYS
AND PERSONNEL IS 238 FEET. (NOTE: REGARDLESS OF THE SEARCH SECTOR
POWER CONTROL, AN/SPY-1A/B/B(V) MAY AUTOMATICALLY EMIT HIGH POWER
TRACK DWELLS. IN ORDER TO PREVENT THE EMISSION OF HIGH POWER TRACK
DWELLS WHILE IN LOW POWER, SHIPS CAN USE LOW-POWER RADIATION CONTROL
REGIONS. SHIPS WITH BASELINES 1.4, 2.9 OR 2.10 COMPUTER PROGRAMS CAN
USE THE DECKHOUSE POWER CONTROL INSTEAD. AS AN ADDED PRECAUTION THE
FINAL POWER AMPLIFIERS (FPA) CAN BE TURNED OFF (TO PREVENT HIGH POWER
OPERATIONS) BY PLACING ALL FPA CABINETS IN LOCAL STANDBY CONTROL
MODE.)
REF C PROVIDES GUIDANCE FOR OPERATION OF AN/SPY-1A/B/B(V) TO
PRECLUDE OFFSHIP AN/SLQ-32 COMPONENT DAMAGE.
(2) FIRE CONTROL SYSTEM MK 99. EXTERNAL CW ILLUMINATOR
RADIATION MUST ALWAYS BE UNDER CONTROL OF C&D/WCS (E.G., SIMULATED
ENGAGEMENT). THE BEAM MUST NOT BE DIRECTED TOWARD ANY BUILDING, SHIP
STRUCTURE, OR MANNED AREA (I.E., CRANES, BUILDINGS, TOWERS AND
ADJOINING SUPERSTRUCTURES). BY SELECTIVE TARGET DESIGNATION IN CLEAR
AREAS AUTHORIZED BY THE COGNIZANT PORT AUTHORITY, LIMITED ILLUMINATOR
OPERATION CAN BE ACCOMPLISHED. THE ILLUMINATOR MAIN BEAM HERP SAFE
DISTANCE IS 1415 FEET.
(3) EW SYSTEM AN/SLQ-32(V)3. IN PORT, AN/SLQ-32(V)3 SHALL
BE ALLOWED TO RADIATE ONLY TO CLEAR AREAS AS AUTHORIZED BY THE
COGNIZANT PORT AUTHORITY. THE MINIMUM SAFE SEPARATION DISTANCE IS
150 FEET.
(4) RADAR SYSTEM AN/SPS-49. SPS-49, WHILE ROTATING, DOES
NOT CREATE ANY HERP AREAS, BUT EMI EFFECTS TO COMMERCIAL TV, RADIO
RECEIVERS, AND WEATHER OR AIR TRAFFIC CONTROL RADARS MAY LIMIT ITS
USE IN PORT. CONTACT THE COGNIZANT PORT AUTHORITY PRIOR TO
OPERATION. IF SPS-49 IS RADIATING WITH THE ANTENNA STATIONARY,
THE MAIN BEAM HERP SAFE DISTANCE IS 995 FEET.
(5) RADAR SYSTEM AN/SPQ-9A. DURING NORMAL OPERATION WITH
THE ANTENNA ROTATING SPQ-9A DOES NOT CREATE A RADIATION HAZARD. IF
SPQ-9A IS RADIATING WITH THE ANTENNA STATIONARY, THE MAIN BEAM HERP
SAFE DISTANCE IS 40 FEET. IN THIS MODE THE ANTENNA SHALL BE DIRECTED
ONLY TO CLEAR AREAS AS AUTHORIZED BY THE COGNIZANT PORT AUTHORITY.
(6) PHALANX WEAPON SYSTEM. IN PORT, PHALANX SHALL BE
ALLOWED TO RADIATE ONLY TO CLEAR AREAS AS AUTHORIZED BY THE COGNIZANT
PORT AUTHORITY. THE MAIN BEAM HERP SAFE DISTANCE IS 125 FEET.
(7) RADAR SYSTEM AN/SPS-55. DURING NORMAL OPERATION WITH
THE ANTENNA ROTATING SPS-55 DOES NOT CREATE A RADIATION HAZARD.
IF SPS-55 IS RADIATING WITH THE ANTENNA STATIONARY, THE MAIN BEAM
HERP SAFE DISTANCE IS 30 FEET.
(8) AN/WSC-3 SATCOM. THESE ANTENNAS ARE IN A RADHAZ AREA
AND WILL NOT PRODUCE RF LEVELS EXCEEDING THE PEL IN ANY NORMALLY
OCCUPIABLE AREA. THE MAIN BEAM SAFE SEPARATION DISTANCE IS 23 FEET.
(9) RADAR SET AN/SPS-64, DURING NORMAL OPERATION WITH THE
ANTENNA ROTATING SPS-64 DOES NOT CREATE A RADIATING HAZARD. IF
SPS-64 IS RADIATING WITH THE ANTENNA STATIONARY, THE MAIN BEAM HERP
SAFE DISTANCE IS THREE FEET.
(10) AN/USC-38 EHF SATCOM. EHF SATCOM SHALL BE ALLOWED TO
RADIATE ONLY TO CLEAR AREAS. THE TRANSMIT BEAM MUST NOT BE DIRECTED
TOWARD NESTED SHIP SUPERSTRUCTURES, BUILDINGS OR MANNED AREAS (I.E.,
CRANES AND TOWERS). THE MAIN BEAM HERP SAFE DISTANCE IS 305 FEET.
EHF SATCOM WILL NOT CREATE RF LEVELS EXCEEDING THE PEL IN ANY
NORMALLY OCCUPIED AREA, INCLUDING THE BRIDGE WINGS AND SIGNAL
PLATFORM.
(11) INMARSAT MX 2400/SATURN 3S.90 INTEGRATED SATCOM
TERMINAL. INMARSAT CAN PRODUCE RF LEVELS EXCEEDING THE PEL OUT TO
NINE FEET FROM THE SURFACE OF THE RADOME. DUE TO THE GENERAL ANTENNA
LOCATION (THERE ARE SOME MINOR VARIANCES BETWEEN INSTALLATIONS), RF
LEVELS EXCEEDING THE PEL WILL NOT EXIST IN ANY MANNED WEATHER DECK
AREA.
(12) ANTENNA 2-1 (TWIN FAN ANTENNA). PELS ARE NOT EXCEEDED
IN NORMALLY OCCUPIED AREAS IN THE VICINITY OF ANTENNA 2-1 DURING
TRANSMISSION BY THIS ANTENNA.
(13) ANTENNA 2-2, NON-HFRG SHIPS (35-FOOT TWIN WHIP ANTENNA,
FRAME 207). PELS FOR POWER DENSITY ARE NOT EXCEEDED IN NORMALLY
OCCUPIED AREAS IN THE VICINITY OF ANTENNA 2-2 DURING TRANSMISSION BY
THIS ANTENNA. RF BURN OR CONTACT CURRENT CONDITIONS CAN EXIST ON THE
RIGID INFLATABLE BOAT (RIB) DAVIT HOOK AND SURROUNDING METALLIC
OBJECTS. BEFORE PERSONNEL ENTER THE RIB, ANTENNA 2-2 TRANSMISSION
SHOULD BE SECURED BETWEEN FREQUENCIES OF 7.5 MHZ AND 9.5 MHZ.
(14) ANTENNA 2-2, HFRG SHIPS (TWIN WHIP ANTENNA, FRAME 154).
CONTACT CURRENT HAZARDS CAN EXIST AT THE PORT AND STARBOARD SIGNAL
LIGHTS AND THE PORT BINOCULARS WHEN TRANSMITTING WITH ANTENNA 2-2.
LIMIT POWER OUTPUT TO 300 WATTS AT FREQUENCIES ABOVE 12 MHZ DURING
OPERATIONS WITH THE SIGNAL LIGHTS OR BINOCULARS.
A RF BURN OR CONTACT CURRENT HAZARD MAY EXIST ON THE FORWARD VLS
STRIKEDOWN CRANE WHEN ANTENNA 2-2 IS TRANSMITTING. DO NOT TRANSMIT
FROM ANTENNA 2-2 DURING FORWARD VLS STRIKEDOWN CRANE OPERATIONS.
(15) ANTENNA 2-3, NON-HFRG SHIPS (18-FOOT TWIN WHIP ANTENNA,
FRAME 154). A CONTACT CURRENT HAZARD CAN EXIST AT THE PORT AND
STARBOARD SIGNAL LIGHTS AND THE PORT BINOCULARS WHEN TRANSMITTING
WITH ANTENNA 2-3. LIMIT POWER OUTPUT TO 300 WATTS AT FREQUENCIES
ABOVE 12 MHZ DURING OPERATIONS WITH THE SIGNAL LIGHTS OR BINOCULARS.
A RF BURN OR CONTACT CURRENT HAZARD MAY EXIST ON THE FORWARD VLS
STRIKEDOWN CRANE WHEN ANTENNA 2-3 IS TRANSMITTING. DO NOT TRANSMIT
FROM ANTENNA 2-3 DURING FORWARD VLS STRIKEDOWN CRANE OPERATIONS.
(16) ANTENNA 2-3, HFRG SHIPS (35-FOOT TWIN WHIP ANTENNA,
FRAME 207). PELS FOR POWER DENSITY ARE NOT EXCEEDED IN NORMALLY
OCCUPIED AREAS IN THE VICINITY OF ANTENNA 2-3 DURING TRANSMISSION BY
THIS ANTENNA. RF BURN OR CONTACT CURRENT CONDITIONS MAY EXIST ON THE
RIB DAVIT HOOK AND SURROUNDING METALLIC OBJECTS. BEFORE PERSONNEL
ENTER THE RIB, ANTENNA 2-3 TRANSMISSION SHOULD BE SECURED BETWEEN
FREQUENCIES OF 7.5 MHZ AND 9.5 MHZ.
(17) ANTENNA 2-4 (35-FOOT TWIN WHIP ANTENNA, FRAME 316).
ANTENNA 2-4 CAN CAUSE HAZARDOUS RADIATION LEVELS OUT TO 10 FEET FROM
THE ANTENNA. TRANSMISSION BY ANTENNA 2-4 CAN RESULT IN RF BURN OR
CONTACT CURRENT HAZARDS ON THE HELICOPTER ON THE FLIGHT DECK, THE AFT
VLS STRIKEDOWN CRANE HOOK, THE MOTOR WHALE BOAT (MWB) AND ITS DAVIT,
AND THE RIB DAVIT HOOK AND SURROUNDING METALLIC OBJECTS. THE
FOLLOWING LIMITATIONS ON TRANSMISSION BY ANTENNA 2-4 APPLY:
(A) DURING HELICOPTER OPERATIONS ON THE FLIGHT DECK
LIMIT POWER OUTPUT TO 250 WATTS.
(B) DURING AFT VLS STRIKEDOWN OPERATIONS DO NOT TRANSMIT
BETWEEN THE FREQUENCIES OF 3.5 MHZ AND 7 MHZ.
(C) DURING MWB OPERATIONS OR MAINTENANCE DO NOT
TRANSMIT. IF IT IS ABSOLUTELY NECESSARY TO TRANSMIT, LIMIT
TRANSMISSION TO 375 WATTS FOR FREQUENCIES BETWEEN 6 MHZ AND 9 MHZ.
(D) BEFORE PERSONNEL ENTER THE RIB, SECURE TRANSMISSION
BETWEEN FREQUENCIES OF 6.5 MHZ AND 12 MHZ.
(18) CEC. IF CEC IS TRANSMITTING AT HIGH POWER THE BEAM
MUST NOT BE DIRECTED TOWARD NESTED SHIP SUPERSTRUCTURES OR MANNED
AREAS (I.E., CRANES AND TOWERS) WITHIN THE HERP SAFE DISTANCE OF
95 FEET. THE PEL IS NOT EXCEEDED FOR MEDIUM POWER AND LOW POWER
OPERATION. CEC WILL NOT CREATE RF LEVELS EXCEEDING THE PEL IN ANY
MANNED WEATHER DECK AREA, REGARDLESS OF TRANSMITTER POWER LEVEL.
(19) OTHER RADIATION RESTRICTIONS MAY BE SPECIFIED BY THE
PARTICULAR PORT. ADVANCE CONTACT WITH PORT AUTHORITIES SHOULD BE
ESTABLISHED.
B. HERP PRECAUTIONS AT SEA:
(1) HERP SAFE SEPARATION DISTANCES. MAIN BEAM HERP SAFE
SEPARATION DISTANCES SHOWN BELOW MUST BE MAINTAINED IN A MULTIPLE
SHIP ENVIRONMENT. PERSONNEL ON SHIPS OPERATING ALONGSIDE CG 47 CLASS
SHIPS MUST NOT BE RADIATED BY THE MAIN BEAM OF RADARS LISTED BELOW IF
THEY ARE WITHIN THE MINIMUM SAFE DISTANCE. RADIATING ELEMENTS NOT
SHOWN DO NOT CREATE HERP CONDITIONS BEYOND THE SHIP BOUNDARIES IN
THEIR NORMAL OPERATING MODES.
RF SOURCE MINIMUM SAFE SEPARATION DISTANCE
AN/SPY-1A/B (BURNTHROUGH) 540 FEET
AN/SPY-1A/B (HIGH POWER) 360 FEET
AN/SPY-1A/B (LOW POWER) 50 FEET
AN/SPG-62 (FCS MK 99) 1160 FEET
AN/USC-38 EHF SATCOM 305 FEET
AN/SLQ-32(V)3 95 FEET
PHALANX 115 FEET
CEC (HIGH POWER) 55 FEET
(2) RADHAZ AREAS. THE 06 LEVEL AND ABOVE IS A RADHAZ AREA,
AS IS THE SERVICE PLATFORM ON THE 04 LEVEL AFT OF THE AFT AN/SPY-1A/B
ARRAY. FOR SHIPS HAVING HF TRANSMITTING ANTENNA 2-4, THE 04 LEVEL
AND ABOVE, OUTBOARD AND AFT OF THE FORWARD END OF THE AFT STACK, IS A
RADHAZ AREA. WARNING SIGNS AND A CHAIN OR ROPE BARRIER SHOULD BE
USED TO RESTRICT ACCESS TO THIS AREA. PROCEDURES SHALL BE
ESTABLISHED TO INSURE RADAR AND RADIO TRANSMITTERS ARE SECURED WHILE
MEN ARE ALOFT.
(3) WEATHER DECK.
(A) THE 03 LEVEL OUTBOARD OF THE ROPED OFF AREA FORWARD
OF THE AN/SLQ-32 IS HAZARDOUS WHEN THE ACTIVE EMITTERS ARE RADIATING.
PERSONNEL SHOULD BE RESTRICTED FROM THIS AREA WHEN THE AN/SLQ-32 IS
RADIATING OR WHEN ITS AECM FUNCTION IS OPERATING IN THE AUTOMATIC
(AUTO) MODE.
(B) IF THE AN/SPG-62 IS RADIATED IN TEST OR TRAINING
MODE WITH BATTLESHORT ENABLED, ENSURE THAT EITHER EXPOSED WEATHER
DECK AREAS ARE CLEAR OF PERSONNEL OR DIRECTORS ARE NOT DIRECTED INTO
RADIATION CUTOUT ZONES.
(C) FLIGHT DECK. REFER TO THE INPORT HERP PRECAUTIONS
FOR HF ANTENNA 2-4 IN PARA 3.A.(17) ABOVE.
(D) BRIDGE WINGS. REFER TO THE INPORT HERP PRECAUTIONS
FOR HF ANTENNAS 2-2(HFRG SHIPS) AND 2-3(NON-HFRG SHIPS) IN PARAS
3.A.(14) AND (15) ABOVE.
(E) FORWARD VLS STRIKEDOWN CRANE. REFER TO THE INPORT
HERP PRECAUTIONS FOR HF ANTENNAS 2-2(HFRG SHIPS) AND 2-3(NON-HFRG
SHIPS) IN PARAS 3.A.(14) AND (15) ABOVE.
(F) AFT VLS STRIKEDOWN CRANE. REFER TO THE INPORT HERP
PRECAUTIONS FOR HF ANTENNA 2-4 IN PARA 3.A.(17) ABOVE.
(G) RIGID INFLATABLE BOAT (RIB). REFER TO THE INPORT
HERP PRECAUTIONS FOR ANTENNAS 2-2(NON-HFRG SHIPS), 2-3(HFRG SHIPS)
AND 2-4 IN PARAS 3.A.(13), (16), AND (17) ABOVE.
(H) MOTOR WHALE BOAT (MWB). REFER TO THE INPORT HERP
PRECAUTIONS FOR ANTENNA 2-4 IN PARA 3.A.(17) ABOVE.
(I) ALL OTHER MANNED WEATHER DECK AREAS ARE SAFE.
C. HERO PRECAUTIONS: THE FOLLOWING GENERAL GUIDANCE IS
PROVIDED. HOWEVER, SPECIFIC GUIDANCE MAY DIFFER FOR SPECIFIC SHIPS
BASED ON THE RESULTS OF THAT SHIP'S HERO SURVEY. REFER TO SHIP'S
HERO BILL AND REF D FOR SPECIFIC GUIDANCE.
(1) VERTREP OPERATIONS: MAINTAIN A MINIMUM SEPARATION
DISTANCE OF 50 FEET BETWEEN HERO SAFE ORDNANCE AND ANY RADIATING
ANTENNA. VERTREP HERO UNSAFE/HERO UNRELIABLE ORDNANCE IN CLOSED
METAL CONTAINERS. FOR HERO SUSCEPTIBLE ORDNANCE USE METAL CONTAINERS
OR APPLY HERO SEPARATION DISTANCES OF REF D.
(2) CONREP OPERATIONS. CONREP HERO UNSAFE/HERO UNRELIABLE
ORDNANCE IN CLOSED METAL CONTAINERS. FOR HERO SUSCEPTIBLE ORDNANCE
USE METAL CONTAINERS OR APPLY HERO SEPARATION DISTANCES OF REF D.
WHEN PHYSICAL CONTACT BETWEEN SHIPS HAS BEEN MADE USING METAL CABLES,
SILENCE ALL 2-32 MHZ ANTENNAS ON BOTH SHIPS WHEN HERO SUSCEPTIBLE
ORDNANCE IS ON A WEATHER DECK OF EITHER SHIP. SILENCE FIRE CONTROL
RADAR SYSTEMS THAT CAN DIRECTLY ILLUMINATE THESE OPERATIONS ON EITHER
SHIP.
(3) OBSERVE HERO SEPARATION DISTANCES LISTED IN REF D FOR
PORTABLE RADIOS.
(4) IF HERO UNSAFE ORDNANCE IS EXPOSED ON THE WEATHER DECKS
SILENCE THE FOLLOWING TRANSMITTERS:
(A) ALL COMMUNICATIONS TRANSMITTERS EXCEPT
AN/URC-80(V)5, AN/URC-93, AN/GRC-211, AN/USC-38(V), INMARSAT, AND
AN/WSC-3 SATCOM/LOS.
(B) ALL RADAR TRANSMITTERS EXCEPT AN/SPS-64, IFF,
AN/URN-25, AN/SPS-55, AND AN/SRQ-4.
(C) ALL AIRCRAFT TRANSMITTERS.
(5) PHALANX AMMUNITION. DURING HANDLING/LOADING OF LOOSE OR
BARE ROUNDS OR UNLOADING OR CLEARING THE GUN SILENCE HF TRANSMITTERS
2-1 THROUGH 2-4, MARS, AND RADAR SET AN/SPS-49. AN/SPY-1A/B/B(V)
RADIATION RESTRICTIONS ARE NOT REQUIRED DURING PHALANX AMMO HANDLING
BECAUSE OF THE RELATIVE LOCATION OF THE SPY-1A/B/B(V) ARRAYS RELATIVE
TO THE PHALANX MOUNTS AND AMMO HANDLING AREAS. THE HERO SEPARATION
DISTANCE FOR AN/SPY-1A/B/B(V) ILLUMINATION OF OTHER SHIPS, WHEN THEY
ARE HANDLING 20 MM LOOSE OR BARE ROUNDS, OR UNLOADING OR CLEARING THE
GUN, IS 8,170 FEET (HIGH POWER) AND 2,045 FEET (LOW POWER).
(6) SRBOC. INHIBIT AN/SLQ-32 RADIATION WHEN CONDUCTING
SRBOC HANDLING AND LOADING OPERATIONS (ONLY APPLIES TO SHIPS WITH
SRBOC LAUNCHERS ON 03 LEVEL IN VICINITY OF AN/SLQ-32).
(7) 5-INCH, 54 CALIBER GUN MOUNT MK 45 AMMUNITION. THE
MK 15 AND MK 44 ELECTRIC PRIMERS ARE HERO SUSCEPTIBLE ORDNANCE.
HANDLING EXPOSED PRIMERS ON THE WEATHER DECK REQUIRES THE FOLLOWING
EMCON: WHEN HANDLING IN THE VICINITY OF MOUNT 51, SILENCE ALL HF
TRANSMITTERS, AN/SPS-49, AND THE FORWARD AN/SPY-1 ARRAY; WHEN
HANDLING IN THE VICINITY OF MOUNT 52, SILENCE ALL HF TRANSMITTERS,
AN/SPS-49, AND THE AFT AN/SPY-1 ARRAY; SILENCE ALL AIRCRAFT
TRANSMITTERS EXCEPT UHF/VHF COMMUNICATIONS LESS THAN 40 WATTS (E.G.,
AN/ARC-159(V)).
(8) HARPOON. HARPOON VARIANTS NOT LISTED IN REF D ARE
CONSIDERED HERO-SUSCEPTIBLE DURING PMS PROCEDURES AND CONNECTING/
DISCONNECTING CABLES. DURING THESE OPERATIONS CONTROL TRANSMISSION
BY THE FOLLOWING TRANSMITTER/ANTENNA SYSTEMS:
(A) SILENCE HF COMMUNICATIONS ANTENNAS 2-1, 2-2, 2-3,
2-4, AND MARS.
(B) RESTRICT THE AN/SPY-1A/B/B(V) AFT ARRAYS TO LOW
POWER.
(C) SILENCE AN/SPS-49 BELOW ELEVATIONS OF 0 DEGREES.
(D) SILENCE ALL AIRCRAFT TRANSMITTERS EXCEPT UHF/VHF
COMMUNICATIONS LESS THAN 40 WATTS (E.G., AN/ARC-159(V)).
THERE ARE NO EMCON RESTRICTIONS FOR PRESENCE OF THE MISSILE IN
THE LAUNCHER.
(9) AN/ALE-29, -37A, AND -39 CHAFF DISPENSERS. MF29 AND
MF 60 IMPULSE CARTRIDGES USED IN THE CHAFF DISPENSERS ARE HERO
SUSCEPTIBLE. ASSEMBLY OPERATIONS INVOLVING REPLACEMENT OF CARTRIDGES
OR REMOVAL OF THE SQUIB BOARDS SHOULD BE CONDUCTED IN DESIGNATED
SPACES WITHIN THE SHIP. IF THESE OPERATIONS ARE CONDUCTED ON THE
FLIGHT DECK, INHIBIT RADIATION FROM THE AFT AN/SPY-1A/B/B(V) ARRAY,
AND FROM THE AN/SPS-49 RADAR AT ELEVATIONS BELOW 0 DEGREES.
(10) HELICOPTER OPERATIONS. IF OPERATIONS ON THE FLIGHT
DECK INVOLVE HANDLING OR LOADING OF IMPULSE CARTRIDGE MK 23 MOD 0
OR OTHER HERO-SUSCEPTIBLE ELECTRICAL IMPULSE CARTRIDGES, SECURE
TRANSMISSION BY HF COMMUNICATIONS TRANSMITTERS AND AIRCRAFT
TRANSMITTERS, AND PLACE A AN/SPY-1 NON-RADIATE REGION IN THAT
SECTOR.
DO NOT ILLUMINATE HELICOPTERS IN FLIGHT OR DURING TAKEOFF OR
LANDING, WITH THE AN/SPY-1A/B/B(V) RADAR IF WITHIN 2135 FEET OF THE
SHIP WHEN OPERATING AT HIGH POWER OR 525 FEET WHEN OPERATING AT LOW
POWER; OR WITH THE MAIN BEAM OF THE AN/SPG-62 RADARS IF WITHIN 1160
FEET (HERP SAFE DISTANCE) OF THE SHIP.
4. ADDITIONAL HERP, HERO, AND EMI PRECAUTIONS FOR CG 47 CLASS SHIPS
DURING HELICOPTER OPERATIONS ARE ADDRESSED IN REF E.
5. HAZARDS OF ELECTROMAGNETIC RADIATION TO FUEL (HERF). THERE
ARE NO SPECIAL HERF EMCON RESTRICTIONS DURING REFUELING WITH JP-5.
EXISTING HERP, HERO AND EMI RESTRICTIONS APPLY AS APPROPRIATE.
6. FOR COMNAVSURFLANT/COMNAVSURFPAC - RECOMMEND CG 47 CLASS SHIPS
BE TASKED TO ADHERE TO THE PROVISIONS OF PARA 3 ABOVE.
7. THIS INFORMATION WILL BE INCLUDED IN THE AEGIS CSOSS. THIS
ADVISORY HAS NO IMPACT ON EOSS OR PMS. IT WILL REMAIN OPEN UNTIL
SUPERSEDED BY REVISED HERP/HERO GUIDANCE.
8. ORIG POC IS MR. N. S. SMITHSON, PMS 400F51H, DSN 332-5981,
EXT 133 OR COMM (703) 602-5981, EXT 133. TPOC IS MR. M. D. BARE,
NSWCDD, DSN 249-7832 OR COMM (540) 653-7832.//
BT
CG-47