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TM 10-4930-247-13&P
2-12.
OPERATING PROCEDURES - cont.
f.
Fuel System Diagram. Refer to figure 2-16. Fuel is supplied to the HTARS by the HEMTT tanker. The tanker
pumps fuel through the hoses to the fuel nozzles. Fuel distribution is controlled by valved couplings installed on
the 2-inch fuel hoses and tees and a ball valve installed in the 3-inch fuel hose.
Up to four refueling points can be assembled from the HTARS components. Refueling points are determined by
the location of the fuel nozzles in the system. Each refueling point consists of a nozzle and its connecting hoses.
The four refueling points may be isolated from the system by closing the appropriate upstream valve. Defective
components may be replaced without affecting operating portions of the system by closing the nearest upstream
and downstream valves.
g.
Fuel System Startup.
WARNINGS
Refueling operations are potentially dangerous. Make sure you identify and
eliminate all safety hazards before operating the fuel system. If a fuel spill occurs
during refueling, immediately shut down the system, isolate the defective
component(s) and clean up spilled fuel. Observe the following safety precautions
and warnings to prevent injury to personnel and damage to the equipment.
·
Do not allow smoking within 100 feet of the fuel servicing areas. Fuel vapors
are extremely flammable. Post NO SMOKING signs around refueling area. Do
not operate system or components near open flame or excessive heat. Death
or injury could result from exploding or burning fuel. Suitable and properly
charged fire extinguishers must be available at all times.
·
Wear protective goggles and gloves. Use fuel resistant gloves when handling
system components due to toxic effects of some fuel additives. Avoid contact
with skin, eyes, and clothes. If fuel contacts eyes, immediately flush eyes with
clean fresh water and get medical attention.
·
Avoid getting fuel on your body or clothing. Fuel can cause chemical burns on
unprotected skin. If clothing becomes saturated with fuel, remove clothing
immediately and wash your body with hot soapy water.
·
Do not breathe fuel vapors. Refuel only in well-ventilated area. Vapors are
toxic and can cause serious illness or death. If dizziness occurs, leave area
and get fresh air. Get medical attention. Static discharge could ignite the fuel
or cause an explosion of the fuel vapor. Do not operate the system until
properly grounded. Make sure all grounding rods are installed and grounding
cable are properly connected.
·
Be certain that nozzles are properly bonded to the aircraft or vehicle being
refueled. Make sure the HEMTT tanker is grounded.
·
Radio transmitters can cause an arc at antennas. Do Not ground equipment to
a radio antenna. Do not transmit during refueling operations.
·
Before operation, be certain all system components are securely connected to
avoid fuel spills. If fuel spill occurs, cover the area with dry soil to reduce rate
of vaporization. During operation avoid fuel spills as much as possible. Make
sure a suitable fire extinguisher is charged and readily available in case of fire.
2-38
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