MIL-HDBK-1138
Table 7 (Continued)
Problem
Solution
Use proper flushing after
pumping truck.
Use manhole to directly dump
into plant.
Do not handle septage in
winter.
Drain all lines.
Septage freezing in truck
Pass engine exhaust through
truck tank to prevent
freezing.
Drain truck tank pipings and
valves.
Collected grit freezes
Store dumpsters in heated
building before emptying.
Store truck inside.
Remove no grit in winter.
Icing of grit dewatering
Duct kerosene heater into
equipment
area.
Grit machine freezes
Enclose unit.
Screened rags freeze
Remove regularly by hand.
Spiral lift pumps freeze
Run water on ice to reduce
buildup.
Screw pumps freeze
Install timer to "bump" screw
once per hour.
Valves and hoses freeze
Drain lines.
Keep hoses on.
Automatic sampler freezes
Place sampler inside building
Do not use in severe cold.
Build insulated structure
heated with light bulb.
Insulate suction lines. Purge
lines after sample taken.
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