TM 10-4510-209-13&P
0007 00
Blackwater System
WARNING
Protective clothing and equipment must be worn. Heavy-duty rubber apron, rubber gloves,
safety splash goggles and/or face shield are required when potential exists for contact with
wastewater or contaminated surfaces. Wastewater and surfaces may be contaminated with
pathogenic microorganisms, bacteria or viruses, which present a risk of serious illness or
death.
NOTE
If CL is not connected to any blackwater system, have contents pumped out by Waste Water
Vacuum Tank/Trailer (WWVT/T), and disregard step 1.
1. Ensure 4-inch valve assembly (1) is open.
2. Flush all commodes (2), urinal (3), and open all faucets for several minutes to hypochlorinate the
system.
3. Set sump pump switch (4) to ON position until contents of tank #1 (5) are emptied into tank #2 (6).
This can be verified by observing the blackwater motion in the #2 tank, or by monitoring the sound of
the sump pump. A sucking sound from the vicinity of the sump pump indicates the #1 tank is empty.
WARNING
Ensure all personnel performing this procedure are equipped with safety goggles or face
shield, rubber apron or suit, rubber gloves, and a respirator. Failure to observe safety
precautions may result in serious illness or death to personnel.
4. Remove the screws retaining each tank access panel (7), and remove the panels. Attach a garden
hose with nozzle to the spigot (8) on the sink stand, open the spigot, and spray the tank interior to
remove any solids retained in the tank. Install access panels and retain with screws immediately after
spraying tank.
5. Close potable water supply branch line gate valve servicing the CLs. Refer to TM 10-5419-206-13
(Force Provider) for information regarding the location and operation of the branch line gate valve.
6. At the service entry panel (9), change input connection from top location (10) to bottom connection
(11), install dust cap at top location.
7. Open the branch line gate valve to flush holding tank #2 (6).
8. Open access panel door and, using a paddle, direct all solids towards drain. Continue until all visible
solids are drained.
9. Clean tools and/or personal protective clothing and individual's equipment using a general purpose
detergent solution, then sanitize using a ten-to-one solution of household bleach in warm water (i.e. 6-
ounces in 2-quarts of water) and allow to air dry.
0007 00-3
