ENGINEMAN 1 & C
Figure 8-7.Aeration subsystem.
pump stops, open the tank washdown supply
valve and wash the tank for 30 minutes. Close the
tank washdown supply valve.
The comminutor and aeration system should
be operated continuously in the in-port mode.
During extended in-port transfer operations, the
CHT tank must be washed a minimum of 30
min/wk. While discharging waste through
transfer hoses, check periodically for leakage,
kinking, and snagging.
In the event of a high level alarm, the operator
should recognize that a problem exists with the
pumps, the discharge piping, or both. If the tank
completely fills while the system malfunction is
being investigated, the waste will overflow over-
board and through any heads or fixtures located
below the overflow discharge lines. Drain lines
from these fixtures incorporate both a check valve
and an isolation, or cutoff, valve. These fixtures
must be identified prior to initial system use.
Whenever a high level alarm sounds, immediate