Start-up procedures should be as follows:
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.1 Ensure boiler is producing flue gas with an
oxygen content of 5% by volume or less (for existing ships 8% by volume
or, wherever practicable, less).
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.2 Ensure that power is available for all control,
alarm and automatic shutdown operations.
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.3 Ensure that the quantity of water required
by the scrubber and deck water seal is being maintained satisfactorily
by the pumps selected for this duty.
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.4 Test operation of the alarm and shutdown features
of the system dependent upon the throughput of water in the scrubber
and deck seal.
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.5 Check that the gas-freeing fresh air inlet
valves, where fitted, are shut and the blanks in position are secure.
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.6 Shut off the air to any air sealing arrangements
for the flue gas isolating valve.
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.7 Open the flue gas isolating valve.
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.8 Open the selected blower suction valve. Ensure
that the other blower suction and discharge valves are shut unless
it is intended to use both blowers simultaneously.
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.9 Start the blower.
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.10 Test blower “failure” alarm.
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.11 Open the blower discharge valve.
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.12 Open the recirculating valve to enable plant
to stabilize.
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.13 Open the flue gas regulating valve.
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.14 Check that oxygen content is 5% by volume
or less, (for existing ships 8% by volume or, wherever practicable,
less) then close the vent to atmosphere between the gas pressure regulating
valve and the deck isolating valve.
Note: Some oxygen analysers require as much as
two hours to stabilize before accurate readings can be obtained.
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.15 The inert gas system is now ready to deliver
gas to the cargo tanks.