TM 5-4220-231-14&P
(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 3-3.
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 3-4 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 3-3.
TSP Cleaning
Solution
Volume
PIPE/TUBE
SIZE
VOLUME
in (cm)
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 3-4 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.
(5) Pump
hot distilled or deionized
water through
the system
to rinse until all visible traces
of cleaning
solution
are removed.
(6) Draw 10 mL sample.
Agitate to observe
for soap
bubbles.
If any soap
bubbles
are present,
repeat
step (5) until no bubbles
are observed.
(7) Blow dry parts or components
with clean,
dry, oil-free nitrogen
(preferably
heated
to 200 degrees
F
(93.3 degrees
C)) until all visible signs of water are absent.
Maintain process
for 1 to 2 hours after initial purge.
(8) Double
bag and seal or tape closed
all components
and ends of pipe or hoses
with plastic until ready
for reinstallation.
c.
Hoses
shall be cleaned
as specified
in paragraph
3-27.
3-45
