GASCO exit exam questions and answer quiz contain questions Answer
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Methane's boiling point at atmospheric pressure is,
-259 Deg F/ -162 Deg
C
-360 Deg F/-218 Deg C
-159 Deg F/-106 Deg C
The boiling temperature of water is
+ 100°C/212°F
-100° C/- 148° F
+ 250° C/4820 F
The state of gas at the temperature its
critical point is called vapour.
Below
Above
At
How can a gas be
liquefied?
By mixing gases of higher specific density
By the application of
pressure or by cooling
By fusion in a closed chamber
By evaporation in a closed chamber
Zero gas, which is
a calibration gas, is made of pure
hydrogen
nitrogen
oxygen
The composition of inert gas produced in a
typical inert gas generator onboard a LNG carrier will not contain,
84% Nitrogen
15% Carbon-di-oxide
0.5% Oxygen
1% carbon-monoxide
and sulfur dioxides •
After discharging
the liquid from the cargo tank, a small quantity will be remaining and it will
be difficult to pump it out. This small quantity of liquid is called as,
Liquid trap
HEEL
Mole
What is the
designed boil-off rate for a typical membrane type LNG carrier?
0.15% of full cargo
tank capacity / day
0.05% of full cargo tank capacity / day
0.25% of full cargo tank capacity / day
0.5% of full cargo tank capacity / day
How can a gas be liquefied?
By mixing gases of higher specific density
By the application of
pressure or by cooling *
By fusion in a closed chamber
By evaporation in a closed chamber
What is the
process of transfer of thermal energy form a hot body to another at a lower
temperature called?
Heat hop
Heat jump
Heat transfer
Heating up
Which of the following statements is true for an ideal gas according to Gay - Lussac's law if:
Pressure = P Volume=V Temperature = T (is constant)
P = Constant - T
P = Constant + T
P = Constant x T
P = Constant / T
13. What is done with Normal Boil - off (NBO)
vapor?
It is removed to
maintain the cargo temperature and pressure
It is retained in the tanks as it has no effect
It is vented to atmosphere
It is collected and stored in the buffer tank
Exposure
controls/personal protection in MSDS will not include,
OSHA permissible exposure limit (PEL), Threshold Limit Value (TLV), and any other exposure limit used or recommended
Appropriate handling
controls
Appropriate engineering controls
Individual protection measures, such as personal protective equipment.
If icing is not
very effective, the next method to be followed isaround the injured area,
compressing
resting
massaging
Accidental
release measures in MSDS will not include:
Personal precautions, protective equipment, and emergency procedures.
Methods and materials for containment and cleaning up.
Instructions for
informing immediate authorities on accidental release
Identify the correct statement. LNG carriers
are designed and constructed to meet the stringent standards of the,
International Code
for the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk (IGC
Code).
Design and construction of LNG carriers are controlled by the classification society rules
Design and construction of LNG carriers are the responsibility of the Government authorities like the US Coastguard
Onboard an LNG
carrier, what provisions are made for separation between the deck and electric
motors room?
Watertight doors
Airlocks
Air intakes
Weathertight doors
Based on the principles of segregation, what
would you classify cargo containment system as?
Gas dangerous space
Gas dangerous zone
Gas safe zone
Gas safe space
As per IGC Code the "design loads"
for a particular cargo containment cystem, which calculation is a requirement?
Crack load
Sloshing load
Hydrostatic load
Damage load
The carriage of
LNG cargo requires a certificate for trading called as
International
Certificate of Fitness for the Carriage of Liquefied Gases in Bulk
International Pollution Prevention Certificate for the Carriage of Noxious Liquid Substances in Bulk (NLS Certificate)
The International Code of the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk (IGC Code), has been mandatory under OLAS chapter VII
International Certificate of Fitness for the Carriage of Dangerous Chemicals in Bulk
What is required to enable BOG to be burned
in the event of a reliquefaction plant shutdown in an LNG carrier?
Gas Combustion Unit
(GCU)
Steam dump plant
Degasification plant
Steam boiler
What is the gas group classification of an LNG
carrier based on the gas that is likely to be present in the hazardous spaces
onboard?
Group IIC
Group IIB
Group I
Group IIA
What is the use of thermocouples
fitted at the surface of the inner hull?
To monitor
cargo tank temperature
To monitor
hull stresses
To monitor the inner steel temperature
#
To monitor
inner hull paint thickness
When a float gauge is not in use, where should the float be?
Leave It at
whatever level it was
Left down and
allowed floating on the liquid surface
Hang above
the liquid level
The float should be retrieved and
housed
What is the ESDS" abbreviation stand for?
Emergency
shutdown deck system
Emergency
system deck serial
Emergency shutdown system
Emergency
downtime system
Which of the following will not
cause an activation of the ESDS?
Differential
pressure between cargo tank and atmosphere - too low
Differential
pressure between cargo tank and primary insulation space - too low
Differential pressure between primary and secondary insulation space - too low
Manual push
button and fusible elements
Under the pneumatic link system, what will happen when the ship moved
off the jetty exceeds its safe working limits (distances)
Hose - break
Air pressure
- drop
Alarms
sounded and ESD activated
Hose - break, Air pressure - drop,
ESDS - Alarms sounded and ESD activated •
How many suitable and operational
portable gas detection equipment shall be available onboard?
At least two sets
with methane gas detection capability
At least one with methane and one with carbon monoxide gas detection capability
At least one with methane gas and one of Ammonia gas detection capability
At least one with methane gas and one of propane gas detection capability
What is the type of gas detection system
fitted for spaces with air?
Spot metering type
fixed inside the individual insulation spaces •
Infrared type using sequential measurement
Portable gas detection system due to mobility of this method
Catalytic combustion type
