Home' Navy News : March 31st 2011 Contents 3/11 ISSUE 75
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Seaworthy is produced by the Directorate of Navy Safety Systems in the interests of promoting
safety in the Navy. The contents do not necessarily reflect Service policy and, unless stated
otherwise, should not be construed as orders, instructions or directives – KEEP NAVY SAFE.
March 31, 2011
ADIATION Hazard (RAD-
HAZ) is the hazard posed to
personnel due to the absorp-
tion of electromagnetic ra-
diation or the hazard from fuels and
explosive ordnance through exposure
to excessive levels of non-ionising ra-
The RAN has a number of strate-
gies in place to reduce the hazards of
electromagnetic radiation to personnel
(HERP) to as low as reasonably practi-
cable (ALARP). These include:
➤ Ongoing RADHAZ education of
➤ Use of RADHAZ markings (red
lines) painted on the deck to warn of
➤ Use of RADHAZ warning signs
(yellow and black) to advise of a
RADHAZ, or potential danger, in
➤ Strict control of RADHAZ keys
by use of ship class specific SOPs
and ship customised RADHAZ key-
boards. Each RADHAZ keyboard
must have an associated RADHAZ/
Man Aloft Log (form AE036),
used for keeping track of personnel
working within potential RADHAZ
➤ Restrictions on the use of radio
transmitting equipment during evo-
lutions such as ammunitioning and
refuelling. This includes the use of
portable transmitting equipment.
The instructions for use of form
AE036–RADHAZ and Working at
Height Log (NSN 7530-66 -158-6461)
➤ Once the form is completed, the
RADHAZ/Man Aloft log must be
signed and placed on the RADHAZ
➤ On completion of work aloft, the
form must be removed from the
RADHAZ keyboard and put into the
RADHAZ/Man Aloft log.
Responsibility for the management
of RADHAZ lies with the OOD/OOW.
The OOD/OOW must ensure that:
➤ No personnel go into areas where
excessive radio-frequency energy is
present without first checking the
RADHAZ keyboard of the ship and,
if necessary, adjacent ships.
➤ RADHAZ keys are not issued
which will introduce RADHAZ to
personnel approved to be Man Aloft
on board or on adjacent ships, struc-
tures or buildings.
➤ All personnel proceeding into
a RADHAZ Zone are briefed on
where they are approved to go and
where they are not authorised.
All personnel are reminded to be
aware of the dangers of exposure.
Radiofrequency energy is odourless,
invisible and silent, yet it exists in
abundance in our ships. The require-
ments of Defence personnel are to:
➤ Follow the RF radiation safety prac-
tices and procedures specified for
➤ Comply with the instructions of
their supervisor or Radio Frequency
Radiation Safety officer.
➤ Participate in RADHAZ training as
➤ Make proper use of the training they
have received to ensure workplace
All incidents of RF overexposure are
notifiable IAW the OHS Act. Navy
reporting requirements are detailed in
ABR 2924, chapter 7, revision 1.
For more information on class spe-
cific RADHAZ SOP, visit: http://
RADHAZ – everyone’s
STAY SAFE: All personnel are reminded to be aware of the dan-
gers of exposure. Radiofrequency energy is odourless, invisible and
silent, yet it exists in abundance in our ships.
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