ICC DECOMMISSIONING (U2) 2025 BRAND NEW ACTUAL EXAM WITH ANSWERS.

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ICC DECOMMISSIONING (U2) 2025 BRAND
NEW ACTUAL EXAM WITH ANSWERS.

When using dry ice to inert a tank you should never? - correct
answer-put dry ice in drop tube.




1.5 Ibs of dry ice should be used for? - correct answer-each 100
gallons of tank capacity.




A tank is never safe to remove unless the oxygen reading is? -
correct answer-5% or lower




When using dry ice crush up remove all plugs except vent and
evenly distribute then re install all plugs but leave vent open. -
correct answer-




When inerting a tank with nitrogen. - correct answer-allow gas to
flow into bottom of tank at a slow rate. Bond ground bottle

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When inerting a tank with nitrogen a pressure gauge should be
installed to make sure pressure does not exceed - correct
answer-5psi




When inerting a tank what meter should be used? - correct
answer-oxygen indicator 5% or less oxygen present befor
removal




When purging a tank what meter should be used? - correct
answer-combustible gas indicator (CGI) LEL reading below 10%
before removal




When cleaning a ust it should? - correct answer-remain in the
excavation




Before placing tanks in storage.
Tanks should be? - correct answer-cleaned (all liquids/ residue
and vapor freed
Tank openings tightly plugged/ capped, with one plug having a
1/8" vent hole.
Vent hole should be at highest point on the tank.
Label all tanks.