Figure 2-73. Securing
Be sure to discharge to a properly prepared and marked sump.
(e) Start the ROWPU.
(f) Slowly adjust the system pressure control valve (6) to provide sufficient flow to flush the spent media from the
Too much water flow may result in product pressure over 35 psig (241 kPa) causing
automatic shut down. Watch the pressure as the water flow is increased.
(g) When only water is observed in the discharge, fully open the system pressure control valve (6).
(h) Shut down the ROWPU.
Perform steps (a (3) thru c (3)) as required during NBC operation.
To avoid death or injury:
Tasks (i) through (f) must be performed wearing TAP suit.
Prolonged wearing of TAP suit may lead to heat exhaustion.
(i) Check floor for contamination. If found, decontaminate floor.
(j) Backwash the media filter four times (para. 2-21), but DO NOT add bisulfite to the clean/flush tank.
To proceed with processing NBC contaminated water, repeat steps (a (3) thru c (3)).
f. To return to normal procedure, continue with step f. (1).
(1) Clean inlet strainer (para. 3-7). Transport debris to disposal sump.
2-154 Change 2