.
Air Force standard design
The mission requirements
MAJCOM recommendation
Available construction dollars
A pumphouse
A concrete cover
An open-air shed
Nothing, to prevent collapse of the tank
A plastic liner
Leak detection
A concrete bottom
Double-wall construction or a dike
New nuts and bolts
The old gasket if it is in good condition
A new gasket slightly thicker than the old one
A new gasket the same thickness as the old one
Vent or vent piping becomes clogged
Tank has an anti-rotation device
Low-level shut-off fails to work
High-level alarm fails to work
Vertical.
Cone roof.
Floating roof tank.
Cone roof tank with floating pan.
Vertical position, 6 inches above the top of the sump.
Vertical position, 6 inches above the bottom of the sump.
Horizontal position, 6 inches above the top of the sump.
Horizontal position, 6 inches above the bottom of the sump.
1⁄2 inch, 1⁄2 inch from the sump bottom.
1⁄2 inch, 1 inch from the sump bottom.
3⁄4 inch, 1⁄2 inch from the sump bottom.
3⁄4 inch, 1 inch from the sump bottom.
Clock-wise, 45.
Clock-wise, 60.
Counterclockwise, 45.
Counterclockwise, 60.
Just before the high-level shut-off level.
Just after the high-level shut-off level.
Just before the high-high level alarm.
Just after the high-high level alarm.
18 inches.
24 inches.
27 inches.
30 inches.
11⁄2 feet.
3 feet.
41⁄2 feet.
6 feet.
Slot
Open
Bleeder
Overflow
Keep the roof from rotating.
Prevent the collapse of the tank shell.
Provide a vapor recovery area under the roof.
Provide a path to the ground for static electricity.
Keep the roof from rotating.
Prevent the collapse of the tank shell.
Provide a vapor recovery area under the roof.
Provide a path to the ground for static electricity.
Slopes to the center.
Support legs are adjustable.
Has insulating air space between decks.
Water drains easily toward the center.
3 inches.
6 inches.
9 inches.
12 inches.
1⁄2 inch, 6 inches above ground level.
1⁄2 inch, 12 inches above ground level.
3⁄4 inch, 6 inches above ground level.
3⁄4 inch, 12 inches above ground level.
4 years.
6 years.
8 years.
10 years.
4 years
6 years
8 years
10 years
4 years.
6 years.
8 years.
10 years.
4 years.
6 years.
8 years.
By direction of the fuels management office.
Yellow bands with white letters on a black background.
Yellow bands with black letters on a white background.
Black bands with white letters on a yellow background.
Black bands with yellow letters on a white background.
One
Two
Three
Four
160° F.
180° F.
200° F.
220° F.