Levelcom 100 - Special Installation Cases

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Page 22

Special Cases

There are cases where the liquid contains a

large amount of suspended solids and there

will have to be provisions for cleaning out the

bubbler pipe. Some examples from actual

LevelCom 100 installations follow.

Drill Mud

LevelCom 100s can be used to gauge drill

mud for oil drilling operations. Drill mud is a

thick liquid full of finely ground clay and

emulsifiers to keep the clay suspended in the

liquid. Solids will build up at any liquid air

interface including the end of the bubbler

pipe. The bubbler pipe needs some provision

for routine cleaning to prevent plugging over

time. Figure 9 shows an example of this kind

of installation. The bubbler pipes are

installed through the sides of the tanks at a

45 degree angle. The angled bubbler pipe is

fitted with a large ball valve which can be

opened to allow a clean out rod to be pushed

through to remove mud solids buildup from

the inside of the bubbler pipe. This operation

would be done only when the tank is empty.

Slurries and Viscous Liquids

LevelCom 100s have been used to gauge

mix tanks for hot asphalt and calcium

carbonate primarily to measure the specific

gravity of the mix. The mixtures will build up

on the bubbler pipes, so the pipes were mounted to a plate that could be removed from the

system for cleaning. This operation was part of the regular scheduled daily or weekly system

maintenance.

Figure 9 Drill Mud Tank Cleanout Example

CLEAN-OUT

LevelCom

CLEAN-OUT