TM 55-1930-209-14&P-1
j.
Prime brine tank as follows:
(1)
Open cap on Y-connection on top of holding tank and using hose previously attached to bib, fill to low level
mark (90 gallons).
(2)
Use manual salinity tester (Total Dissolved Solids Tester) according to TM 5-6630-215-12 to test seawater
salt concentration. if test indicates seawater is about a 4 percent brine solution (40 per 1000 ppm), no
additional salt is needed in the holding tank However, if tests indicate additional salt is necessary, refer to
chart below for amount of salt to add to holding tank
Salt concentration of
seawater per 1000 ppm:
1
10
20
30
40
Salt required in Ibs:
28
20
15
7
0
(3)
If necessary, add proper amount of salt to agree with salt concentration as determined by salinity tester.
Then replace cap on Y-connection of holding tank
(4)
Generate and circulate chlorine according to paragraph 9-14.
9-14 Chlorine generation and recirculation
a.
Make sure holding tank has been primed according to paragraph 9-13.
b.
Position CU valves as indicated below.
o = open
x = closed
A = position A
B = position B
C = position C
CU VALVE NO
2
2A
3
4
5
6
6A
7
8
9
10
POSITION
o
o
C
A
C
o
o
C
x
x
x
c.
Close chlorination unit makeup water and cooling water flowmeter valves (Figure 9-5). Make sure brine pump
switch inside control cabinet (Figure 9-10) is OFF.
d.
Turn alarm switch on control cabinet (Figure 9-9) to OFF.
e.
Turn function switch on control cabinet (Figure 9-9) to AUTO.
NOTE
Chlorination system now makes chlorine solution of a proper concentration in
approximately 4 hours. When DC ammeter (Figure 9-9) is reading 950 to 1000
amps (0.95 to 1.0 kilo amps), holding tank solution is at proper level of
concentration. Add salt or water to holding tank as necessary.
f.
For an alternate method of producing chlorine solution to eliminate initial build-up time, add 10 gallons of
commercial hypochlorite solution (Clorox or other liquid chlorine bleach) to holding tank as follows:
(1)
Open cap on Y-connection on top of holding tank.
(2)
Add 1 gallon of commercial hypochlorite solution (bleach) for every 9 gallons of water in holding tank.
(3)
Close cap on Y-connection of holding tank (4) Turn function switch on control cabinet (Figure 9-9) to
OFF/RESET to stop recirculation of holding tank solution.
9-24
