TM 5-4220-227-14
(8) Blow dry components with clean air, nitrogen or helium.
(9) Reassemble components using an approved lubricant.
(10) Bag and seal or tape closed all components and ends of pipe or hoses with plastic until ready for reinstallation.
b. For cleaning pipe or tubing the following procedures should be followed:
(1) Determine the volume of cleaning solution estimating the length of pipe or hose to be cleaned and the size of the
pipe to be cleaned. Look up the appropriate pipe/tube size and then the corresponding volume (in cubic inches)
per one foot length in table 4-3. Multiply that volume by the estimated length to be cleaned. After the total
volume is calculated, multiply the answer in cubic inches by .00433. After the total volume is calculated, multiply
the answer in cubic inches by 00433 to obtain the number of gallons to fill the system. Determine applicable flow
rate from table 4-4 and multiply flow rate by thirty (30) to compute number of gallons required to pump through
the system. Add volume required to fill system and the volume required to pump through the system for the total
volume of cleaning solution required.
Table 4-3. TSP Cleaning Solution Volume.
Pipe/Tube Size
in (cm)
Volume of 1 Foot (30 cm) Length
1/4 (0.6 cm)
0.6 cubic inches (9.7 cm3)
3/8 (1.0 cm)
1.3 cubic inches (21.7 cm3)
1/2 (1.3 cm)
2.4 cubic inches (38.6 cm3)
3/4 (1.9 cm)
5.3 cubic inches (86.9 cm3)
1 (2.5 cm)
9.4 cubic inches (154.5 cm3)
1-1/2 (3.8 cm)
21.2 cubic inches (347.6 cm3)
2 (5.1 cm)
37.7 cubic inches (617.9 cm3)
(2) Prepare a solution at a ratio of 2 pounds (0.9 kg) of TSP, 0.5 ounces (14.7 mL) non-ionic detergent for each 80
gallons (302.8 L) of distilled or deionized water as determined.
(3) Heat solution to 165 degrees F (74 degrees C) mixing occasionally during the heating.
(4) Pump the cleaning solution through the pipe/tubing for 30 minutes at a rate listed in table 4-4 using the solution
pump, and maintain constant temperature at all times. It may be necessary with some piping configurations to
cap or plug some openings and alternate with others to maintain even flow of cleaning solution to all segments of
the pipe. If you run out of cleaning solution prior to the 30 minutes listed, prepare another volume of cleaning
solution.
4-90
