HERO-unsafe ordnance should NEVER be
exposed to a RF environment. However, the
requirement for assembly, disassembly, handling,
loading, and unloading exposes ordnance to some
degree. If exposure cannot be avoided, ordnance should
be exposed only in essentially RF-free designated
regions, such as below deck or in RF-shielded
The commanding officer is responsible for making
sure that HERO-unsafe ordnance is not handled in RF
environments. Sometimes operational commitments
require HERO-unsafe ordnance to be exposed to RF
environments, such as the flight deck, hangar deck, or
weather decks. A degree of relief from HERO RF
restrictions is obtained by following the command
HERO EMCON bill.
The HERO EMCON bill depends upon two
factors(1) the amount and type of ordnance that is
involved, and (2) a knowledge of the RF environment at
locations where presence, handling, and loading occur.
The HERO EMCON bill contains a list of all
items on board and their allowable RF environmental
levels. It also includes a list of all transmitter-antenna
combinations on board and their output power.
Reducing or securing certain transmitter-antenna
Normally, to ensure that proper conditions are met
in a given ordnance-handling situation, two actions are
All onboard transmitters are listed.
The action each operator is to take when a
given HERO EMCON condition is set.
For example, in HERO condition 1, a transmitter
operator may switch the transmitter to STANDBY. In
HERO condition 2, the same operator may restrict
transmission to 100 watts, or perhaps there is no
transmission restriction at all.
The AO is the most important factor in avoiding a
HERO-unsafe situation. You determine if an ordnance
item is HERO safe, HERO susceptible, or HERO
unsafe. Before moving a HERO-unsafe item from a
RF-free environment, you must request, through strike
operations or ordnance control, the proper HERO
condition. You make sure that the ordnance item
remains in a RF-free environment until the word has
been passed that the proper HERO condition has been
For detailed information concerning all aspects of
Electromagnetic Radiation Hazards, NAVSEA OP
3565/NAVAIR 16-1-529, volumes I and II.
REVIEW NUMBER 5
List the three HERO ordnance classifications.
Ordnance is HERO safe if it meets what
Name the environment to which HERO-
susceptible and HERO-unsafe ordnance
should not be exposed.
What is the HERO EMCON bill?
What information can you find in the local
HERO EMCON bill?
working with ordnance.
Preplanning, ordnance training, and carefully
explosives. The phrase "The life you save may be your
own" is a good one, especially when you handle
ordnance. It is your responsibility to make sure those
safe, approved practices and procedures are used when
you handle ordnance.
REVIEW NUMBER 5 ANSWERS
The three HERO ordnance classifications are
HERO safe, HERO susceptible, and HERO
HERO-safe ordnance must be percussion
initiated and shielded enough so that EDDs
are safe when used in RF environments.
ordnance should not be exposed to RF
The HERO EMCON Bill contains a degree of
relief from HERO RF restrictions.
The HERO EMCON Bill contains a list of all
ordnance items on board the command.