TM 5-4220-226-14&P
4-35. Cleaning Method - Trisodium Phosphate (TSP) - continued.
Table 4-3. TSP Cleaning Solution Volume
PIPE/TUBE
SIZE (inches)
VOLUME
OF 1 FOOT (0.3 m) LENGTH
1/4 (0.6 cm)
0.6 cu in. (9.8 cm3)
3/8 (0.9 cm)
1.4 cu in. (22.9 cm3)
1/2 (1.2 cm)
2.4 cu in. (39.3 cm3)
3/4 (1.9 cm)
5.4 cu in. (88.4 cm3)
1 (2.5 cm)
9.5 cu in. (1.5 m3)
1-1/2 (3.8 cm)
21.2 cu in. (3.4 m3)
2 (5.2 cm)
37.7 cu in. (6.1 m3)
(2) Prepare a solution at a ratio of 2 lb (0.9 kg) of TSP, 0.5 oz (14.7 ml) nonionic detergent for each 80
gallons (302.8 I) of distilled or deionized water as determined.
(3) Heat solution to 165F (74C), 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.
Table 4-4. Cleaning Solution Flow Rate
TUBE SIZE
(inches)
GPM
PIPE SIZE
(inches)
GPM
1/4 (.6 cm)
1/2
1/4 (.6 cm)
2
3/8 (0.9 cm)
2
3/8 (.9 cm)
3
1/2 (1.2 cm)
3 3/4
1/2 (1.2cm)
5 1/2
3/4 (1.9 cm)
6 3/4
3/4 (1.9 cm)
9 1/2
1 (2.5 cm)
12 1/2
1 (2.5 cm)
15 1/2
1 1/4 (3.1 cm)
23
1 1/2 (3.8 cm)
35
2 (5.2 cm)
50
(5) Pump hot distilled or deionized water through the system to rinse until all visible traces of cleaning
solution are removed.
4-40
