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STEP 1
The Deep Anode System is being uncovered in the regulator station. Time is 8:15 A.M. June 20, 2000. Digging is done by gas company employees.
STEP 2
Crew and work truck arrive at the regulator station. Time is 8:30 A.M.
STEP 3
Fence is taken down in order for work truck and hoist trailer to be positioned over the replaceable deep anode system.
STEP 4
The hoist trailer is positioned over the replaceable deep system.
STEP 5
The replaceable deep system is exposed prior to surface extensions.
STEP 6
Tanks are positioned behind the deep system. The tanks will serve as fluid reservoirs in which the water/carbon mixture can settle during the fluidization process.
STEP 7
A surface extension is placed on the deep system. Note the horizontal diverter pipe used to direct the flow of water/carbon forced to the surface by fluidization. Also note the anode lead extending out the top of the pipe extension.
STEP 8
After the tanks and extensions are in place, the derrick is raised. The derrick will be used to lower wash pipes. Water will be pumped down the wash pipes to fluidize the carbon within the casing.
STEP 9
Wash pipe is lowered until the surface of the carbon is reached. This picture shows the first pipe being lowered.
STEP 10
After the first wash pipe is lowered, the next length of pipe is attached and lowered into the casing. The wash pipe is made up of 21 ft. lengths of 3/4 in. steel.
STEP 11
The second length of wash pipe is then connected. This sequence is continued until the surface of the Loresco is reached.
STEP 12
Once the Loresco is reached, the wash pipe is attached to a 1 in. reinforced hose connected to a pump that generates an approximate flow of 15 gpm @ 75 psi. The wash pipe will then be lowered further into the casing. Water will be pumped down the pipe to fluidize the Loresco.
STEP 13
The tanks are then filled with fresh water which is pumped down the wash pipe being lowered. Note the carbon-free water being returned to the tank from the casing.
STEP 14
The Loresco surface was reached at a depth of 95 ft. The first 100 ft. of wash pipe has now been lowered into the replaceable deep system. Time is 10:25 A.M.
STEP 15
The first granules of Loresco mixed with water are being forced to the surface through the diverter pipe. Note the change of the water's color from clear to black.
STEP 16
The next length of wash pipe is then attached to the flow hose. Note that the pipe may be lowered while fluid is being pumped.
STEP 17
The next length of pipe is attached and lowered into the Loresco. The pipe will be lowered until its depth exceeds that of the bottom of the anode.
STEP 18
This picture shows the flow of the water/Loresco mixture into the tanks during fluidization. The Loresco settles to the bottom of the tanks and the water above it is recirculated.
STEP 19
This shovel contains Loresco which has been fluidized and settled into the tank. Note that the Loresco is free of debris. Since the RDA is a totally non-metallic cased system, the backfill tends to remain pure.
STEP 20
This crew member shows the current depth of Loresco which has settled to the bottom of the tank during fluidization.
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