ARMY TM 10-4610-309-14
MARINE CORPS TM10802A-14/1
0008 00
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
PREPARATION FOR USE AND INSTALLATION INSTRUCTIONS
OCEAN INTAKE STRUCTURE SYSTEM (OISS) SET-UP OPERATION
UNDER UNUSUAL CONDITIONS
JETTING THE SECOND WELLPOINT
1. Disconnect the 2 in x 50 ft., green-banded discharge hose from the 2 in. x 10 ft., yellow-banded
OISS suction hose.
2. Connect the discharge hose to another 2 in x 10 ft., yellow-banded OISS suction hose that is
connected to the 2 in. tee of a second wellpoint/riser assembly. Cap the unused port of the tee.
3. Increase the diesel engine speed to establish flow for jetting the wellpoint.
4. Connect a second 2 in. x10 ft., yellow-banded OISS suction hose to the first hose on the jetted
wellpoint to determine where to jet the second wellpoint.
5. Jet the second wellpoint into the sand using the same procedures that were followed to jet the
first wellpoint. Observe the warning.
6. After flushing the second well point for five minutes, slow the diesel engine to idle speed.
7. Remove the discharge hose from the 2 in. x 10 ft., yellow-banded OISS suction hose.
8. Connect the two 10 ft., yellow-banded suction hoses from the first wellpoint to the 2nd wellpoint.
JETTING THE THIRD WELLPOINT
1. If the floating inlet strainer is used as the water source for jetting the wellpoints, repeat the
procedures that were followed for the first two wellpoints to jet the third and fourth wellpoints into
the sand. Use the yellow-banded OISS suction hoses as a guide to determine the location of the
wellpoints. Insert the 2x2x3 tee adapter between the second and third wellpoints.
2. If two submerged wellpoints are used as the water source, use the two jetted wellpoints as the
source of water for jetting the third and fourth wellpoints as follows:
a. Remove the submerged wellpoint assembly from the water.
b. Connect one 10 ft., yellow-banded OISS suction hose to the 2 in. tee of the second
wellpoint.
c. Connect the 2x2x3 in. tee adapter to the other end of the hose.
d. Cap the other 2 in. end of the tee assembly.
e. Connect the 2 in. discharge hose from the raw water pump to another 10 ft., yellow-
banded OISS suction hose that is connected to the 2 in. tee of the third wellpoint/riser
assembly. Remove the hose from the other end of the tee and cap the tee.
f. Increase the diesel engine speed to establish flow for jetting the wellpoint.
g. Using the 10 ft. suction hose on the third wellpoint as a guide, determine the location of
the third wellpoint from the 2x2x3 tee adapter.
h. Jet the third wellpoint into the sand using the same procedures that were followed to jet
the first and second wellpoints. Observe the warning.
i. After flushing the third well point for five minutes, slow the diesel engine to idle speed.
j. Remove the discharge hose from the 10 ft. suction hose.
k. Connect the suction hose to the 2x2x3 tee adapter.
l. Connect a 10 ft. suction hose from the tee of the jetted third wellpoint and cap the other
end of the hose.
0008 00-5
