25 October 2004
MK-48 Afterbody Teardown Hood. Workers uncouple the fuel section
and the engine section of the torpedo in the teardown operations. During these
operations, Otto Fuel II remains in the lines and the components of the engine section,
and in the fuel tank. The residual fuel releases vapor into the air. Design the afterbody
teardown hood as shown in Figure 4-7 to capture Otto Fuel II vapor. Design the hood
using the following criteria.
Install baffles on the top and side of the hood forming a booth.
b. Install a 7-mm (3-in) airfoil on the outer edge of the hood. The airfoil,
bent inward from the baffle, must provide an airfoil effect and prevent
turbulence and backflow.
c. Install lighting that is vented and flush mounted in the overhead baffle
as shown on Figure 4-7.
d. Bolt the hood to the floor, using a continuous natural rubber gasket on
hood bottom to create a seal between the hood and the floor.