Which of the
following will result in automatic stopping of IG blower (Asked in Sept 2014 and Feb 2015 in MMD Kochi,Kolkata and Chennai)
A) low water level in deck seal
B) Oxygen content above 8%
C) Scrubber tower low water level
D) scrubber tower high water level
A) low water level in deck seal
B) Oxygen content above 8%
C) Scrubber tower low water level
D) scrubber tower high water level
Ans – D
In IG
system there always the alarm for Opion A,B & C because these all are not
that much critical but Option D is very critical related to the operation of
IGG plant because if scrubber tower high water level alarm came it means may be
your ovb valve is not fully open because it contain two valves in the ovb line
one is hydraulic and one is normal butterfly valve and manufacture gives the
shutdown for this alarm because if water level keeps on increasing then sea
water goes all through the line and from there it will go to the tanks and
contaminate the cargo which may degrade the quality of the cargo which is one
of the worst scenario.
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