Lockheed C-5M, Техническое руководство

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Table 1-12. Tools and Test Equipment Required - Continued
Figure and In-
dex No.
Nomenclature An Type Designation or
Part No.
Alternate Use and Application
Radio Set NSN 5820-00-034-7403 Used for communication between
crew members of the truck-
mounted spraying unit
1.4.1 Safety Precautions.
The following safety precautions and precautionary measures (Table 1-13) are for the protec-
tion of personnel and the airplane during the anti-icing and deicing procedures.
•
Anti-icing and deicing defrosting
À
uid, Speci
¿
cation SAE AMS 1424, is mildly toxic and contact with skin or
eyes should be avoided. Prolonged exposure to concentrations exceeding 1,000 parts per million parts of air
should be avoided. The
À
uid may possibly
À
ash at temperatures above 200 °F and proper precautions should be
taken to ensure that the
À
uid is kept away from all sparks,
¿
re, and oxidizing agents. Operators should stay on
the windward side during spray or brush application. Adequate eye protective equipment should be worn by all
personnel engaged in the application of these
À
uids.
•
Prior to Liquid Oxygen (LOX) servicing, the
À
uid will be removed from areas adjacent to the LOX
¿
lter and
over
À
ow tubes by
À
ushing or wiping methods. Contact of
À
uid with LOX, a powerful oxidizing agent, could
result in a
¿
re or explosion. Although the
À
uid’s
À
ash point is above 93 °C (200 °F), the
À
uid should be used
with care when sprayed around heater or engine exhausts. Special care shall be exercised to prevent the
excessive use of
À
uid around cabin heater and/or ventilating air intake ducts. This precaution is essential to
minimize the possibility of toxic fumes entering the cabin or cockpit during taxi prior to takeoff.
•
Extreme caution must be exercised in the use of glycol-water solutions (including SAE AMS 1424 anti-icing/
deicing/defrosting
À
uid) in and around airplane having silver or silver-coated electrical/electronic circuitry.
Rapid oxidation and
¿
re can occur when glycol-water solutions come in contact with and short across bare or
defectively insulated silver or silver-coated electrical circuits such as wiring, switches, circuit breakers, etc.,
which are carrying positive Direct Current (DC).
•
Be careful to avoid contact with power lines when operating spraying equipment.
•
During deicing operations, do not spray glycol solution in the immediate area of an operating Auxiliary Power
Unit (APU). Resulting smoke from glycol entering the APU exhaust can enter the APU air inlet. This precau-
tion is essential to minimize the possibility of toxic fumes entering the cabin, cargo compartment, or cockpit.
•
Deicing
À
uids containing ethylene glycol have been found to cause severe spalling of portland cement concrete
pavements. This damage may be prevented or minimized by treating such pavements prior to exposure with
light seal coats of emulsi
¿
ed linseed oil. Asphalt pavements do not require protective coatings and linseed oil
will not be applied to these pavements.
•
The linseed oil treatment described should not be used on surfaces where LOX spills are likely to occur.
Emulsi
¿
ed linseed oil consists of raw linseed oil (48 percent by volume) dispersed in water (in alkaline
solution). It can be procured through local paint manufacturers. Equipment for dispensing the linseed oil in
water is not normally available at Air Force bases. Pavement surfaces should be above 60 °F. The amount of
application is approximately 15 to 20 square yards per gallon. The emulsi
¿
ed linseed oil should be applied
thickly enough to
¿
ll the pores in the pavement but not thickly enough to leave a visible coating after a 10- to
20-minute soak time. Better penetration will be obtained if the liquid is heated to and applied at a temperature
of 100 °F to 140 °F.
a. Boom rotation and direction changes must be accomplished slowly and smoothly.
TO 1C-5M-2-1
1-30