(3) Fire Extinguisher -- three dry-chemical or carbon-dioxide fire extinguishers are a necessity for the
safe conduct of aircraft refueling operations.
HEMTT Tanker Aviation Refueling System.
The HTAR System is designed as a light-weight, rapidly assembled four-point aircraft hot refueling system to be
used with the M970 HEMTT tanker. All connections in the HTAR system are unisex, dry-beak couplings. The
couplings are designed to prevent fuel from flowing if the connections are not made properly. The system
consists of one 3-inch by 50-feet and ten 2-inch by 50-feet discharge hoses. It also includes four nozzles. It has
four CCRs, four D-1s, and four overwing and recirculation nozzles.
Petroleum Tank Vehicles.
a. Tank Trucks. They are used for fuel servicing. The fuel handling equipment and the carrier are one
piece of equipment or permanently fixed to the carrier chassis, except the tank and pump unit.
(1) Tank and Pump Unit. The TPU is designed to be mounted on a 5-ton cargo truck for retail
operations. TPUs can be found in units that have large numbers of vehicles. The TPU consists of the following
major pieces of equipment:
(a) Two 600-gallon welded aluminum tanks and a pump A-frame which houses the 50-GPM
centrifugal pump electrically driven by the vehicle's 24-volt battery system. The frame also houses a 50-GPM
filter/separator and two 40-foot by 1/2 inch dispensing assemblies mounted on hose reels.
(b) A ground reel for grounding the pump and filter/separator assemblies, and a metering kit
which has to be ordered separately.
(2) The TPU can only store and issue one type of fuel. A second type of fuel can be carried on a
trailer-mounted 600-gallon tank, but the fuel from this tank must be gravity fed or issued through another pump
b. M978 HEMTT Tanker.
The Heavy Expanded Mobility Tactical Truck (HEMTT) tanker is a 2,500 gallon capacity tank truck found in
combat units to provide transportation and distribution of petroleum. The vehicle can operate both on- and off-
road and has a highway range of 300 miles. The vehicle weighs 10 tons and has a 445 horsepower diesel engine.
(1) The tank is a 2,500-gallon stainless steel shell with baffles and a man-hole cover.
transporting capacity, both highway and cross-country, is 2,500 gallons.