曝光台 注意防骗
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in an approved container and SE notified for pickup.
(6) MARKING. Jet engines shipped with the source
installed will be marked for radioactive material and
shipped IAW applicable technical orders and federal regulations
(10 and 49 CFR).
d. RADIUM. Is used to mark signs, warning placards,
circuit breakers, and instruments for emergency use in
case of electrical failure. Radium impregnated lacquers
and paints may be found on a variety of aircraft and support
equipment components. Radium provides a luminescent
characteristic mixed with paints. It is a radioactive
metal which emits alpha particles and energetic
gamma radiation and causes the radium to be visible in
darkness. While the radium particles are held together
with paint, there is no health hazard. The health problems
arise when the paint begins to chip and spill off which
releases radium dust into the environment.
(1) POTENTIAL HEALTH HAZARDS. Radium presents
a twofold hazard, chemical and radiation.
TO 00-105E-9
3-16
(a) The chemical properties of radium present a
health hazard only after entry into.the body; by inhalation,
ingestion, or through an open wound. Inhalation is
the most significant mode of entry. Radium deposits in
bone as much as calcium.
(b) Radium provides both an internal and external
ra- diation hazard. When taken into the body, the intense
ionization produced by the alpha particles may
cause se-vere localized damage to cells. Externally, the
beta radia-tion causes skin exposure, the gamma radiation
causes deep exposure. Given the limits, radium can
constitute a serious external radiation hazard. The beta
radiation exposure to the extremities can be reduced up
50% by wearing leather gloves. A few feet away, there is
little radiation exposure.
(2) FIRE HAZARDS. If material is on fire or involved
infire: contact the local, state, or department of energy
radiological response team. Extinguish fire using agent
suitable for type of surrounding fire. The material itself
does not burn or burns with difficulty. Fizzles as radioactive
material.
(3) HANDLING PROCEDURES.
(a) Skin contact should be avoided. Heavy gloves
should be worn if handling is required. Radium components
which are deteriorated should be wrapped and
sealed in plastic bags or wrapping material. Bags should
be marked for contents and radiation status. Lead can
also be used to shield against the gamma radiation.
(b) Industrial eye protection and approved respirators
should be worn when removing or handling damaged
or corroded radium components.
(c) Materials used in handling deteriorated radium
components ( such as gloves or plastic wrap) will be
placed in radioactive waste container for subsequent disposal
IAW applicable guidance.
(d) Personnel handling deteriorated radium should
wash hands thoroughly with soap and water immediately
after removal of gloves, before eating, drinking, smoking
and at the end of the shift.
(e) At no time will an attempt be made to removethe
radium from a component with out specific approval from
the USAF Radioisotope Committee, USAF OMS/ SGPR,
Brooks AFB, TX.
e. STRONTIUM-90. A radioactive material used in aircraft
construction. Typically used in anti-ice detectors
and blade integrity indicators for helicopters.
(1) POTENTIAL HEALTH HAZARDS. Strontium-90 is a
a high energy beta material. Highly toxic radioactive poison.
Therefore, the hazard is both an internal and external
radiation hazard. When taken into the body, the ionization
produced by the beta particles may cause severe
localized damage to cells. Attacks bone marrow with
possibly fatal results. Externally, the beta radiation is classified
as a skin exposure hazard only. Beta radiation
exposure to the extremities can be reduced up to 10%
by wearing leather gloves. At a distance of 30 feet, there
is little radiation exposure.
(2) FIRE HAZARDS. Fire or explosion: Flammable/
combustible material. May ignite on contact with air or
moist air. May burn rapidly with flare-burning effect. Some
react vigorously or explosively on contact with water.
Some may decompose explosively when heated or involved
in a fire. May re-ignite after fire is extinguished.
Runoff may create fire or explosion hazard.
(3) HANDLING INSTRUCTIONS.
(a) No drilling, filing, machining, sanding, or other
abrasive procedures are permitted.
(b) Where prolonged body contact is possible or
where abrasive operations are likely to affect the strontium
alloy,the component should be removed and stored
in a secure area.
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