|
Component
|
Preventive maintenance
|
Maintenance interval
|
| Flue gas
isolating valves
|
Operate the
valve
|
Before
start-up and one week
|
|
|
Cleaning
with compressed air or steam
|
Before
operating valve
|
|
|
Dismantling
for inspection and cleaning
|
Boiler
shutdown
|
| Flue gas
scrubber
|
Water
flush
|
After
use
|
|
|
Cleaning of
demister
|
Three
months
|
|
|
Dismantling
of level regulators and temperature probes for inspection
|
Six
months
|
|
|
Opening for
full internal inspection
|
Dry-docking
|
| Overboard
pipes and valve from flue gas scrubber
|
Flushing
with scrubber water pump for about one hour
|
After
use
|
|
|
Dismantling
of the valve for overhaul, inspection of pipeline and overboard end
|
Dry-docking/repair period
|
| Blowers
|
Vibration
check
|
While
running
|
|
|
Flushing
|
After
use
|
|
|
Internal
inspection through hatches
|
After
flushing and six months
|
|
|
Dismantling
for full overhaul of bearings, shaft tightenings and other necessary
work
|
Two years or
more frequently if required/dry- docking
|
| Deck water
seal
|
Dismantling
of level regulators/float valves for inspection
|
Six
months
|
|
|
Opening for
total internal inspection
|
One
year
|
|
|
Overhaul of
auto-valves
|
One
year
|
| Deck
mechanical nonreturn valve
|
Moving and
lubricating the valve is necessary
|
One week and
before start
|
|
|
Opening for
internal inspection
|
One year/18
months
|
| Pressure/vacuum valves
|
Operating
and lubricating the valves
|
Six
months
|
|
|
Opening for
full overhaul and inspection
|
One
year
|
| Deck
isolating valve
|
Opening for
overhaul
|
One
year
|
| Gas
pressure regulating system
|
Removal of
condensation in instrument, air supply
|
Before
start
|
|
|
Opening of
gas pressure regulating valves for overhaul
|
As
appropriate
|
| Liquid-filled pressure/vacuum breaker
|
Check liquid
level when system is at atmospheric pressure
|
When
opportunity permits and every six months
|