MIL-PRF-44156E (GL)
3.7
4.3.5
ENVIRONMENTAL REQUIREMENTS
Corrosion resistance
3.7.1
4.3.5.1
4.3.2 Operating requirements verification.
4.3.2.1 Heater tank, tray pack, size and configuration inspection. Inspect the heater tank and
verify that there is a visual mark on the inside and demonstrate that the visual mark is at the 20-
gallon level, and that the addition of 20 tray packs (reference figure 2) is within the capacity of
the tank. Measure and verify the height of the tank assembly. Demonstrate that a Modern Burner
Unit(MBU) will fit into the heater tank assembly. Inspect the tank assembly and verify that there
are two fold-down handles on each end with upward motion limited to 90 degrees and covers on
the top, hinged on each side, with latches to secure the covers in the closed position. Inspect the
tank assembly and verify that there is a drain, a drain ball valve and a drain pipe with a hose
adapter.
4.3.2.2 Heater tank, tray pack, heating demonstration. Demonstrate tank heating capability
by filling the tank with 20 gallons of water. The temperature of the water shall be 600F + 50F.
The ambient temperature during testing shall be 700F + 100F and wind velocity shall be no more
than 2 mph. Verify that the tank water is heated to 2120F in not more than 1 hour. Verify that the
tank does not have damage caused by burner heat, such as distortion or pitting.
4.3.2.3 Heater tank, tray pack, drainage demonstration. Demonstrate the drainage capability
of the heater tank by filling the tank with 20 gallons of water, and opening the drain valve
completely. Verify that the water drains from the tank to a level less than 3/4 inch deep in not
more than 6 minutes.
4.3.2.4 Heater, tank, tray pack, leakage inspection. Visually inspect the heater tank during
and subsequent to the heating and drainage demonstrations. Verify that leakage has not occurred.
4.3.2.5 Heater tank, tray pack, warning plates inspection. Inspect the warning plates. Verify
the warning plate text and location.
4.3.2.6 Heater tank, tray pack, operating instructions plate inspection. Inspect the operating
instruction plate. Verify the text and location.
4.3.2.7 Griddle, size and configuration inspection. Measure and verify the length, width, and
height of the griddle top and the width and height of the handle openings.
4.3.2.8 Griddle, flatness demonstration. Verify that the griddle cooking surface flatness is
within 1/8 inch, when measured from a straightedge placed across each set of diagonal corners,
after six cycles of heating to not less than 3750F and cooling to room ambient temperature.
10
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