ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
0002 00
DESCRIPTION AND THEORY OF OPERATION
EQUIPMENT DESCRIPTION AND DATA
Ocean Intake Structure System (OISS) Kit (see Figure 37)
The OISS is used for seawater intake from beach locations when surf conditions or tide extremes make it
difficult or impossible to use the floating inlet strainer. The OISS draws raw water from under the sand. It
is provided as standard issue with the A-TWPS and as an extended capability module for the MC-TWPS.
The OISS includes the following major components:
Four well points. The well points are slotted and screened to keep sand out of the well points
and risers.
Four 60-in. and four 24-in. riser pipes.
Two end well point 90-degree elbow assemblies with gaskets for the female fittings.
Two middle well point top 2-in. straight tee assemblies with gaskets for the female fittings.
Six two-in., 10-ft. long yellow-banded suction hoses with gaskets for the female fittings.
One middle 3-in. tee assembly with a gasket for the female fitting.
2-IN. STRAIGHT TEE
3-IN. TEE
YELLOW-BANDED
GASKET
2 X 10 SUCTION HOSE
90 DEGREE ELBOW
60-IN. OR
24-IN. RISER PIPE
WELLPOINT
Figure 37. Major Components of the Ocean Intake Structure System (OISS) Kit.
0002 00-33
