Cargo work, Mid term exam, Mar 2011
Manish S
International Maritime Institute
MID TERM EXAM -- CARGO WORK
Total marks= 100, passing = 50%
Correct answer
Section A
Multiple choice questions:
(each objective question is of four marks. You get full marks on all correct answers, and pro-rata for partially correct answers) . Total 4 marks x 18 questions = 72 marks
With reference to Bulk Carriers,
1) The contents of BC Code are related to
A) Dangers associated with the shipment of bulk cargoes
B) To give guidance on procedures to be adopted
C) To describe test procedures to determine various characteristics of bulk cargoes
D) Special Bulk Cargoes being shipped
Which of the above statements are incorrect??
2) The height of the peak upto which high density bulk cargo can be loaded in a cargo hold, when the cargo is untrimmed or partially trimmed, should not exceed the results as obtained by formula:
a) 0.9 x L x B x D
b) 20% increase over (0.9 x L x B x D)
c) Hold wise distribution should not exceed appreciably
d) 1.1 x D x SF , in metres
3) In the cargoes with Angle of Repose > 35 Deg, which statement are correct
a) Tween deck has no cargo in it
b) Load lines are not contravened
c) Tank top is stressed
d) Peak height can be exceeded
4) Horizontal shift of GM is what nature of hazard on a bulk carrier
a) Structural Hazard
b) Stability Hazard
c) Chemical Hazard
d) Load Density related Hazard
5) The contents of BLU code are related to :
a) Agreement between Ship and Shipper for loading/unloading of cargo and ballast
b) The checklist for safe loading/unloading of bulk cargo
6) Medical related emergencies , when loading dangerous cargoes , is dealt with in what book:
a) Ship Captain’s Medical Guide
b) International medical guide for merchant ships
c) MFAG
d) Material Safety data Sheet (MSDS)
With reference to Oil Tanker vessels
7) In an Inert Gas System, the purpose of PV Valve is:
a) To ventilate out the tank during loading operation
b) To breath-in fresh air into the tank during discharging of cargo
c) To vent out , to breath-in small amount of air, during changes in volume of cargo with the change in temperatures
d) To prevent back flow of cargo vapors into the Engine room space during an event of high pressure in the cargo tank
8) In the Flammability Diagram, the flammable range for HC and Oxygen is given by the following combination
a) HC above 2%, and Inert Gas oxygen more than 8%
b) HC above 1% LEL , and Oxygen less tan 16.5%
c) HC above 1% Vol and Oxygen less than 19% Vol.
d) HC between 1% and 10% and Oxygen between 21% and 11.5%
9) Which of the gas detection equipment works on the principle of wheatstone bridge balancing:
a) a Drager Gas Detection Tube
b) Explosivemeter, Tankscope, and Oxygen meter
c) An extension tube for gas detection equipment
d) An H2S Detector
10 ) Which instrument is correct to use for detection of HC Gas in an non-inerted Enclosed Space
a) A Tankscope
b) an explosivemeter
c) an oxygen meter
d) a h2s detector
11) During Crude Oil washing, which of the following methods is used for simultaneously strip out the tank when the cargo is also being discharged ashore:
a) Stripper Pump (a reciprocating pump)
b) An eductor system
c) A centrifugal cargo pump
d) A screw pump
12) Which of the following device is used for freely venting out inert gas when cargo is being loaded in a cargo tank:
a) A deck seal
b) a PV Valve
c) a PV Breaker
d) a Mast riser
With reference to Container vessels:
13) The advantage of Containers is that:
a) It is Multi-modal
b) It prevents Pilferage
c) It save time, by quick handling of large quantities
d) It can carry oil cargo in barrels.
14) The marking of the container represent
a) its stowage location as given in the Bay Plan
b) the unique ID of the container, and its size and type code
c) The category of dangerous good , if any, stored inside the container
d) the date of manufacture, stack weight, rake stress test limit, --All given on the CSC Plate.
15) Lashings of a container , in a Stack Securing, is done by
a) Wires, bulldog grips, penguin hooks
b) Twist Lock, Bridge Fittings, Lashing Bars, Stacking Cones
c) Cell Guides
d) By putting a Locking Seal on the doors of the container
16) Hazards associated with the Container ship include,
a) quick change in the GM of the Vessel as the container cargo is fast handled
b) Listing/Heeling of vessel , as the containers are loaded or discharged with high speed of operation
c) Flammability as the containers are laible to burn
b) Loss of containers if improperly lashed, as the containers are buoyant and therefore affected by sea wash in bad weather.
17) The size and testing requirements for containers is given in which set of regulations
a) The BLU Code
b) IBC Code
c) CSC Code
d) Gas carrier Code
18) In Refrigerated /Heated containers, the likely methods for maintaining the temperatures is
a) In –built Internal Fuel Engine on container
b) The CONAIR container
c) The electrical power supply to onboard cooling machinery of the container
d) Ventilation by Air pipes as in Cargo Holds.
Section B
Numerical Question == carries 28 Marks
Question ) A tank of volume 6000 cu m is 12 m deep. T is being loaded with oil of RD 0.762. The tank has an ullage pipe extending 0.7 m above the tank-top. The shore pipeline is 8km long and 40 cm in diameter, if the entire oil in the pipeline is also to be loaded, and an allowance of 2% of the volume of the tank is to be leaft for expansion, find
i) the ullage at which the order to shut the refinery valve should be given
ii) the ullage on completion of loading, and
iii) the mass of oil loaded. (take pi= 3.14159)
--
Manish.