MIL-HDBK-1164
Table 34
Maintenance Checklist for Aeration Equipment
Inspection
Action
(1), (2)
Waterfall type aerators
Inspect aerator surfaces; remove
D
(cascade)
algae; clean.
Waterfall type aerators (tray) Clean and repair trays; clean coke
SA
or replace.
Waterfall type aerators
Repair or replace surfaces as
A
(cascade)
necessary.
Packed tower aerators
Inspect packing for scale buildup.
W
(strippers)
Packed tower aerators
Clean with acid. (3)
Biweekly or
(strippers)
as required
Diffuser type aerators
Porous ceramic plate or
Check discharge pressure. If
V
tube
clogging is evident, dewater tank
and clean diffusers.
Porous ceramic plate or
Drain aeration tank. Check for
SA
tube
joint leaks, broken diffusers, and
clogging. (4)
Water side of ceramic
Clean with acid in place or remove
SA
diffusers
and soak in acid. (3)
Air side of ceramic diffusers
If plates are clogged with iron
SA
oxide, treat with 30% HCl; if
clogged with dust, soot, oil, etc.,
remove diffusers and burn off
extraneous material in a furnace
following the manufacturer's
instructions.
Porous saran-wound
Inspect and clean as required. (5)
SA
tube diffusers
Injection nozzles
Inspect and clean.
SA
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