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问题 1 从 48
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- 48
A system for continuous monitoring of the concentration of hydrocarbon gases in the cargo pump-rooms shall be fitted. What is the max pre-set level?
No higher than 5 % LFL.
No higher than 3 % LFL.
No higher than 8 % LFL.
No higher than 10 % LFL.
Any discharge into the sea of oil or oily mixtures from the cargo area of an oil tanker shall be prohibited except when:
The tanker is more than 100 nautical miles from nearest land.
The tanker is more than 20 nautical miles from nearest land.
The tanker is more than 30 nautical miles from nearest land.
The tanker is more than 50 nautical miles from nearest land.
As a general guidance to the suitability of an oil for crude oil washing the following criteria should be used. For aromatic crude oils whose kinematic viscosity is the temperature controlling characteristic, the kinematic viscosity of the oil used for COW should not exceed ___ centistokes at the oil wash medium temperature.
40 centistokes.
50 centistokes.
60 centistokes.
65 centistokes.
As a general guidance to the suitability of an oil for crude oil washing the following criteria should be used. For paraffinic crude oils whose pour point temperature is the controlling characteristic, the temperature of the cargo to be used for COW should exceed its cloud point temperature by at least ___ if excessive sludging is present and should only be used once in a “closed cycle” washing program.
15 °C.
5 °C.
10 °C.
20 °C.
Before any portable gas indicators are brought to the measuring spot, what is very important to do with these analysers first?
To do a full calibration.
Just renew the batteries.
Zero adjust them.
Just check the filters.
Cargo hoses in service should have a documented inspection at least annually to confirm their suitability for continued use. What is the normal testing pressure to check for leakage?
1,5 times the Rated Working Pressure (RWP).
1,0 times the Rated Working Pressure (RWP).
2,5 times the Rated Working Pressure (RWP).
2,0 times the Rated Working Pressure (RWP).
For what purpose do we use inert gas on board oil carriers?
We use inert gas to held pressure in the cargo tanks when we are discharging.
We use inert gas to replace the oxygen in the cargo tanks to maintain a neutral atmosphere.
We use inert gas to clean cargo lines after discharging.
We use inert gas for tank stripping when discharging.
From where on board can you find out the different types of protection equipment regarding where placed, how much, how many?
The ship’s safety plan.
Stated in your cabin.
In cargo control room.
On the bridge.
In order to avoid excessive electrostatic generation in the washing process during COW how many meters do you have to discharge from a cargo tank before you can use the content as source of washing fluid?
2 m.
1 m.
0,5 m.
1,5 m.
In which Annex of MARPOL do we find regulation for the prevention of pollution by garbage from ships?
In Annex VI.
In Annex IV.
In Annex V.
In Annex III.
In which Annex of MARPOL do we find regulation for the prevention of pollution by oil?
In Annex II.
In Annex I.
In Annex III.
In Annex V.
In which way may intake of poisoning material occur?
By inhaling.
Skin penetrating and skin absorbing.
Swallowing.
回答
Near by the access to shore a certain plan is to be kept in case of an emergency situation. What kind of plan?
Discharging plan.
Emergency plan.
Safety plan.
Loading plan.
The fire control draft on board is called the “safety plan” and shall be posted on board. In port, a copy of this plan shall in addition be available from somewhere else. Where shall this copy be available?
At the gangway.
In the engine control room.
On the terminal.
Handed over to the surveyors.
What do you call the method used for bone-soft part injures?
ABC-method.
ICE-method.
REHAB-method.
First Aid-method.
What does OBO means?
Oil Bulk Oil.
Only Bulk Oil.
Ore Bulk Oil.
Only Basic Oil.
What does VLCC means?
Very large crude carrier.
Very large combination carrier.
Very large common carrier.
Very large crude combination carrier.
What does the abbreviation TLV means?
Total limit value.
Total level value.
Time limitation value.
Threshold limit value.
What is it called when it is possible to ignite the vapour above the oil?
Flash point.
Boiling pointy.
Ignition point.
Pour point.
What is the Permissible Exposure Limit (PEL) of hydrogen sulphide expressed as a Time Weighted Average (TWA)?
20 ppm.
30 ppm.
10 ppm.
5 ppm.
What is the common expression for all chemical compounds that includes carbon and hydrogen?
Alkanes.
Hydrocarbons.
Alkenes.
Arenes.
What is the flammable range (%) for Propane?
0,2-0,9.
8,5-1,9.
7,8-1,5.
2,2-9,5.
What is the main quencher for an oil tanker?
Foam.
Water.
Powder.
Carbonic acid.
What is the maximum oil content allowed in the arrival ballast water?
15 ppm.
10 ppm.
5 ppm.
0 ppm.
What is the maximum oil content in the ballast/washing water allowed to be pumped over board during a voyage?
20 litres pr. nautical mile.
30 litres pr. nautical mile.
40 litres pr. nautical mile.
60 litres pr. nautical mile.
What is the maximum volume percent oxygen allowed in the tank during COW?
Maximum volume percent oxygen shall be the same as LEL for actual cargo.
Maximum volume percent oxygen shall not exceed 8 %.
Maximum volume percent oxygen shall not exceed 10,8 %.
Maximum volume percent oxygen shall not exceed 1 %.
What is the meaning of LEL?
Limited explosive level.
Lower explosive level.
Lower explosive limit.
Lower exposure level.
What is the meaning of LOT?
Load on Top.
Loss of Tugs.
Load over Top.
Loaded oil Total.
What is the meaning of UEL?
Upper exposure level.
Upper explosion level.
Upper explosive limit.
Upper evaporation level.
What is the meaning of the abbreviation ABC due to first aid?
Air, Burning, Critic.
Air, Breathing, Circulation.
Abandon, Balance, Circulation.
Air, Breath, Concentration.
What is the name of the device used for supervising all the ballast water to be pumped over board?
Ballast Monitor (BM).
Oil Detection Monitoring Equipment (ODME).
Ballast Handling Monitor (BHM).
Ballast Supervising Monitor (BSM).
What is the normal clearance of the main suction (bellmouth) from the tank bottom to the stripping suction in the cargo tank?
15 cm.
20 cm.
10 cm.
5 cm.
What is the proper name of CH4?
Propane.
Ethane.
Pentane.
Methane.
What is the requirement to capacity of stripping system during bottom COW of the cargo tanks?
1,50 times the total through-put of all tank cleaning machines.
1,35 times the total through-put of all tank cleaning machines.
1,15 times the total through-put of all tank cleaning machines.
1,25 times the total through-put of all tank cleaning machines.
What is the requirement to capacity of the inert gas plant?
At least 125 % of the maximum discharge capacity.
At least 150 % of the maximum discharge capacity.
At least 110 % of the maximum discharge capacity.
At least 115 % of the maximum discharge capacity.
What is the requirement to number of drive units where the drive unit is not integral with the cleaning machine?
No drive unit need to be moved more than twice from its original position.
No drive unit need to be moved more than 3 times from its original position.
No drive unit need to be moved more than 1 time from its original position.
No drive unit need to be moved more than 2 times from its original position.
What is the total quantity of the particular cargo you can discharge into the sea from a new tanker?
1/45 000 of the total quantity of the particular cargo.
1/15 000 of the total quantity of the particular cargo.
1/30 000 of the total quantity of the particular cargo.
1/20 000 of the total quantity of the particular cargo.
What is the usual activation point for high level alarms in cargo tanks?
92 % of tank capacity.
95 % of tank capacity.
90 % of tank capacity.
98 % of tank capacity.
What kind of cargo can be carried with an O/O ship?
Only Oil.
Only Ore.
Either Ore or Oil.
Ore and Oil simultaneously.
What kind of extinguishing-remedy would you choose to put out electrical fire?
Water.
Dry extinguishing remedy.
Foam.
Combination of powder and water.
What kind of fixed extinguishing plant is installed in an oil tankers engine room and pump room?
Powder plant.
Foam plant.
CO2 plant.
Water spray plant.
When re-inerting a cargo tank before commence air venting, what is the maximum oxygen content in the supplied inert gas?
8 % by volume.
5 % by volume.
10 % by volume.
6 % by volume.
Where do we find regulation regarding venting system on tankers?
ISGOTT.
MARPOL.
SOLAS.
OILPOL.
Where venting is by high-velocity discharge valves, what is the minimum distance above the cargo tank deck?
2 m.
5 m.
3 m.
10 m.
Which oxygen content shall we measure before entering a tank or space after venting?
The oxygen content shall be measured to 19 % by volume.
The oxygen content shall be measured to 21 % by volume.
The oxygen content shall be measured to 10,8 % by volume.
We don’t need to measure the oxygen content.
You are discovering a small leak of oil at the manifold during discharging. What is your first action?
Try to stop the leak.
Call immediately the person in charge.
Call the terminal.
Do not bother.
You are going to enter a tank to lift out some sediments. What kind of permits are needed to be issued before entering?
Enclosed Space Entry Permit and Cold Work Permit.
Enclosed Space Entry Permit and Hot Work Permit.
Hot Work Permit and Cold Work Permit.
Enclosed Space Entry Permit only.
You find the element carbon in only two different natural conditions. Which?
Graphite and diamond.
Diamond and titanium.
Graphite and vanadium.
Vanadium and silver.
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