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Головна Онлайн-тести CES Oil tanker Handling and Stowage Test for seamans about Cargo Handling and Stowage on Oil Tanker (CES v6.0)
Онлайн-тестування: Test for seamans about Cargo Handling and Stowage on Oil Tanker (CES v6.0)
Виберіть режим роботи з тестом:
Навчання
Онлайн-тест
Опис
Відгуки
Тест складається із 80 випадкових питань.
Усього питань на цю тему: 119
Усього питань на цю тему: 119
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As per MARPOL, Oil Record Book Part II, Cargo/Ballast Operations, must be carried and completed on oil tankers of:
150 gross tonnes and above.
I don’t know.
20 gross tonnes and above.
50 gross tonnes and above.
When cargo discharge reaches stripping levels on an oil tanker, it is necessary to reduce the inert gas pressure so as to:
Comply with the requirement of MARPOL Annex VI.
Avoid over-capacity in the IG generator.
Avoid locking the cargo pump impeller.
Minimise blowback.
The Reid Vapour Pressure (RVP) test is commonly used for measuring:
The absolute vapour pressure of the liquid at 37,8 °C.
The absolute vapour pressure of the liquid at 15,6 °C.
The absolute vapour pressure of the liquid at 38,7 °C.
The absolute vapour pressure of the liquid at 59 °C.
The reporting of incidents involving harmful substances and/or marine pollutants is regulated under:
Annex II to SOLAS 1974.
Protocol I of MARPOL.
The UN Convention on the Reporting of Accidents and Incidents which Present a Hazard to the Marine Environment 2004.
Appendix B of the Supplement to the IMDG Code
The recommended guideline for avoiding the risk of electrostatic potential in a mist produced by using oil and water during Crude Oil Washing operations is that:
Crude Oil Washing, where the oil source is stored in a slop tank or other tank that has previously contained slops, should be avoided.
I don’t know.
Before washing begins, any tank that is to be used as a source of oil for Crude Oil Washing should be partly discharged to remove any water that has settled out during the voyage. The discharge of a layer of at least 1 metre is necessary for this purpose.
If a slop tank is to be used to supply oil to drive a Crude Oil Washing operation in a cargo tank, then that slop tank must not have contained slops with a water content of more than 2 %.
An oil tanker with a defective Oil Discharge Monitoring Equipment may be allowed by a Port State Authority to trade for:
One ballast voyage before proceeding to a repair port.
I don’t know.
The vessel will be detained until ODME is rectified.
Two ballast voyage before proceeding to a repair port.
The purpose of permanent continuous coamings fitted from side to side across the decks near the accommodation of an oil tanker is:
To keep deck spills away from the accommodation and service areas.
To reduce the effects of racking stresses.
To push the sea water shipped onto the deck over the sides of the ship.
To increase the strength of the deck structure.
Crude oils may be considered to consist:
A natural mixture of carbon and sulphur isomers.
A refined blend of hydrocarbon compounds and sulphur extracts.
A mixture of carbon extracts and naturally occurring wax.
A natural mixture of simple and complex hydrocarbon compounds.
At which of the following concentrations of Hydrogen Sulphide might a person experience dizziness, fatigue and memory loss?
40 ppm.
20 ppm.
10 ppm.
I don’t know.
The maximum oxygen content by volume permitted in the cargo tanks throughout the crude oil washing operation is:
10 %.
5 %.
3 %.
8 %.
The purpose of the “mud box” fitted on a tanker is to:
Collect ships waste and water mud when ballasting and de-ballasting.
Catch the mud from the anchors and cables and deposit these at the windlass.
Restrict any particles and solids entering the pipeline system.
Catch spills when connecting the discharge or loading hose.
During tank washing, besides maintaining the tank oxygen content below 8 % by volume, it should also be ensured:
That the tank is maintained at atmospheric pressure level.
That a negative pressure is maintained in the tank.
That a positive pressure is maintained in the tank.
That a minimum of 2,4 bar inert gas inlet pressure is maintained in the tank.
Which of the following best describes what the wax content of crude oil is?
The percentage of wax, expressed as a percentage, remaining in an oil product after distillation.
The percentage, by weight, of paraffinic wax found in a representative sample of the crude oil.
I don’t know.
The observed volume percentage of waxy deposit found in a cargo tank after discharge in relation to the total volume of cargo previously carried.
The one particular hazard to be taken care against, when using portable steam driven blowers for ventilating oil cargo tanks is:
That plastic extension tubes should not be used, in case the top collar overheats and melts, causing the tube to drop into the tank.
That prolonged use may cause the core material of the fan to heat up to a point where it may become a source of ignition.
That the steam outlet must point vertically upwards to avoid possibly burning the legs of passing personnel.
That the exhaust does not vent into the cargo tank, in order to prevent possible build-up of static electricity.
According to ISGOTT, in which of the following situations, when measuring vapour space oxygen content of a cargo tank, can a electrochemical sensors in gas measuring instruments become damaged or poisoned?
When the sample containing hydrocarbon/inert gas has a hydrogen sulphide content greater than 2 %.
When the sample containing hydrocarbon/inert gas has a hydrogen sulphide content greater than 1 %.
When the sample containing hydrocarbon/inert gas has a hydrogen sulphide content greater than 3 %.
I don’t know.
When describing the characteristics of oil cargoes or oil/water slops, a “mercaptan” is:
A colourless, odorous gas, with a smell similar to rotting cabbage and which is generated naturally by the degredation of natural organisms, as may be found where water has remained under oil for a long time.
I don’t know.
A chemical additive blended with crude oil to inhibit the natural “rotten egg” smell associated with certain grades.
The component of hydrocarbon-based cargoes which is formed from Merolion Carbonized Tannin.
After efficient scrubbing of inert flue gas what would be the concentration of sulphur dioxide be:
25 ppm.
100 ppm.
50 ppm.
10 ppm.
As per international regulations, the minimum inert gas pressure required to be maintained in slop tanks if slops are retained on board is:
10 mm/water gauge.
750 mm/water gauge.
1 000 mm/water gauge.
100 mm/water gauge.
Oil tankers built and delivered after 6th July 1986 may have wing ballast tanks that extend throughout the cargo tank length. In this case the design feature against pollution in the event of the bottom being breached is that:
Additional level sensors and alarms must be fitted to give early warning of oil outflow.
Steel thickness in the bottom area must be a minimum of 1,36 times that otherwise required by construction regulations to minimise the extent of any breach.
The cargo tank levels must be set so that hydrostatic pressure will stop oil outflow.
The pressure vacuum valves must be capable of complete sealing, and the integral strength of the tank such that a total vacuum is capable of being maintained in the breached compartment, thereby preventing outflow of oil.
For a vessel proceeding enroute, located more than 50 nm from nearest land outside a special area and having in operation its ODME, the maximum instantaneous rate of an oily water mixture is:
30 litres per nautical mile.
300 litres per nautical mile.
60 litres per nautical mile.
I don’t know.
On a traditional crude oil carrier, it is possible to arrange the valves in the bottom of a pumproom so that cargo flows from one bottom line to another. When more than one grade of cargo is carried, what is the operational safeguard requirement regarding these valves?
There is no so special requirement.
That two valves must be closed on each line or a “spacer” removed to ensure no direct connection between tanks.
That one valve segregation is maintained at all times.
That there is two valve segregation.
With reference to oil cargo characteristics, “cloud point” is:
I don’t know.
The temperature at which an oil product begins to emit vapours which can be observed in a spectroscope due to the volume of solid particles extracted during evaporation.
The depth within a cargo above which no waxy solids are entrained.
The temperature at which a liquid hydrocarbon begins to congeal and take on a cloudy appearance, due to the bonding of constituent paraffin compounds.
The compensation payment by the charterer that is due when a vessel is unable to load/discharge her cargo within the allowed and contracted time is referred to as:
Demurrage.
Contractual penalty discount.
Deferment.
Discretion.
The chemical characteristics of effluent water from an inert gas scrubber and the condensate which collects in the deck mains would be:
Acidic in nature.
Demineralised in nature.
Alkaline in nature.
Neutral in nature.
As per the IMDG Code, an “article” is referred to as:
A device that contains a dangerous substance or mixture of substances.
A device that is responsible for initiating a dangerous reaction.
A form that contains important information about a hazardous substance.
Something that is packed within a freight container.
What is the purpose of girders in the tank?
They support the stiffeners.
They transfer all sea forces acting on the plating.
They transfer all the cargo forces acting on the plating.
They support the stiffeners and also take up some of the sea forces.
If W = Displacement, L = length, B = Breadth, D = depth of vessel, Cb = Block Coefficient, Cw = Coefficient of Waterplane, RD = Relative Density, then:
W = L · B · D · Cb / RD.
W = L · B · D · Cb.
I don’t know.
W = L · B · d · Cw.
A VLCC is to anchor in a depth of 80 meters in open water with moderate swell running. How many shackles of anchor chain should be used to ensure safely anchored?
8 shackles.
11 shackles.
6 shackles.
3 shackles.
For security purposes, the IMDG Code should be read in conjunction with the:
Chapter XI-2 of SOLAS and Part A of the ISPS Code.
Part B of the ISPS Code and Chapter II of the Maritime Transport and Offshore Facilities Act.
I don’t know.
IMO NVIC 24 and 46 CFR 2.05.
With reference to oil tanker equipment, the abbreviation VECS stands for:
Vapour Ejection Control System.
Vapour Emission Calibration System.
Vapour Emission Control System.
Vapour Emission Control Standard.
Your vessel is in an area of restricted visibility. You hear this sound signal. What does it mean?
That there is a vessel in distress nearby.
That there is a vessel engaged in underwater operations in the vicinity. She has divers down.
That there is a vessel at anchor in the vicinity.
That there is a vessel aground in the vicinity.
What is a VPR (OPA-90)?
Vessel Response Plan.
Vessel Report Plan.
Vessel Response Procurement.
I don’t know.
The purpose of the demister unit within the Inert Gas System is:
To remove water from the IGS stream.
To remove sulphur oxides.
To cool the inert gas.
To prevent overheating.
When conducting a risk assessment for a shipboard work activity, the two elements to be considered are:
The chance of an incident re-occuring and the potential effects of an loss.
The available manpower and their experience in this type of work.
The potential severity of harm and the likelihood that harm will occur.
I don’t know.
The approximate Upper Flammable Limit of Crude Oil when measured as a percentage volume in air is:
12,6 %.
15 %.
2,2 %.
9,5 %.
After the last entry being made, the retention period of an oil record book on board must be:
Not less than 5 years after the date of the last entry.
I don’t know.
Not less than 3 years after the date of the last entry.
1 year.
When in-service testing a hose used for cargo transfer on an oil tanker (and for which the elongation of the hose assembly when new was greater than 2,5 %), the maximum permitted elongation before the hose must be withdrawn from service should be:
Not more than 1,5 times the temporary elongation measured at the previous in-service test, as documented in the ship’s annual test record.
Not more than 1,25 times the temporary elongation measured when the hose assembly was last tested, as documented in the appropriate certificate.
Not more than 1,5 times the temporary elongation measured when the hose assembly was last tested, as documented in the appropriate certificate.
Not more than 1,5 times the temporary elongation measured when the hose assembly was new, as documented in the manufacturer’s certificate.
Prior to discharging cargo from an oil tanker, “line displacement” is usually conducted to:
To balance a rigid cargo arm.
I don’t know.
The calibration of the ship’s flow meter.
Verify the pipeline contents with previous grade have been replaced.
The approximate API gravity of Arabian Light Crude is:
30°.
40°.
27°.
33°.
The examples of Aromatic Hydrocarbons will include:
Benzene, Toluene and Xylene.
Carbon Dioxide and Hydrogen Peroxide.
Propane, Butane and Pentane.
Hydrogen Sulphide and Carbon Monoxide.
Oil tankers are subject to cyclical bending moments throughout their life as a result classification society rules require a specific minimum reduction in steel thickness to be maintained within “x” length amidships, where “x” is:
0,4 length.
I don’t know.
0,2 length.
0,3 length.
According to 33 CFR 156.170, for oil tankers trading in US waters, the minimum requirement for testing of cargo transfer hoses and associated piping system are:
That no leakage occurs under dynamic fluid pressure of less than 1,5 times the maximum allowable working pressure.
That no leakage occurs at the nominal anticipated working pressure.
That no leakage occurs under static liquid pressure of at least 1,5 times the maximum allowable working pressure.
I don’t know.
When in-service testing a hose used for cargo transfer on an oil tanker (and for which the elongation of the hose assembly when new was greater than 2,5 %), the maximum permitted elongation before the hose must be withdrawn from service should be:
I don’t know.
Not more than 1,5 times the temporary elongation measured at the previous in-service test, as documented in the ship’s annual test record.
Not more than 1,5 times the temporary elongation measured when the hose assembly was new, as documented in the manufacturer’s certificate.
Not more than 1,25 times the temporary elongation measured when the hose assembly was last tested, as documented in the appropriate certificate.
When describing the characteristics of oil cargoes or oil/water slops, a “mercaptan” is:
A device fitted to a cargo pump which automatically alerts the operator once traces of water start to be detected during discharge.
A chemical additive blended with crude oil to inhibit the natural “rotten egg” smell associated with certain grades.
The component of hydrocarbon-based cargoes which is formed from Merolion Carbonized Tannin.
A colourless, odorous gas, with a smell similar to rotting cabbage and which is generated naturally by the degredation of natural organisms, as may be found where water has remained under oil for a long time.
The purpose of the decanting line between two slop tanks, where fitted, is:
To enable most of the recovered oil to be retained in the primary slop tank, while the cleaner part of the water will flow into the secondary slop tank, where it can be re-used as wash-water.
To avoid a build-up of static electricity during water washing, caused by air being drawn in as the primary slop tank empties.
To enable the filling of the secondary slop tank via the primary slop tank.
To enable both the primary and secondary slop tank to be filled without using the main cargo lines.
Master of every ship must provide:
Facilities to conduct training whenever required by the training officer.
A link between the shipboard training officer and the company training officer ashore.
The training during crews working hours only.
Proper rest to the crew after each training programme.
How much liferaft capacity should be provided on a conventional cargo ship of more than 85 metres in length?
25 % of the complement on each side of the ship.
100 % of the complement if it can be readily launched on either side of the ship. If it cannot be readily launched on either side, 100 % must be provided on each side.
75 % of the complement on each side of the ship.
50 % of the complement on each side of the ship.
A tanker in ballast, having recently left the discharge port is involved in a collision. The two vessels are still interlocked after the collision and a survey of the ships gives all crew members are safe and the damage is focussed to the vicinity of the impact. What should be the greatest concern at this time?
When the two vessels separate one (or both) of the vessels will have insufficient stability to remain afloat.
The vessels moving together will create even greater damage to their structures.
The possibility of pollution.
The ships moving together in the swell/seaway will cause a spark and consequently an explosion.
On board a crude oil tanker, guidance on the washing system and equipment along with the applicable operating procedures, can be found in:
The Oil Record Book – ship particulars page.
The Operating and Equipment (COW) Manual.
The ODME Operating Manual – manufacturer’s instruction section.
MARPOL – Annex I.
Special Areas as per MARPOL are:
Specific geographical sea areas in which special mandatory measures for the prevention of sea pollution by oil are required.
Specific geographical sea areas, designated as Marine Conservation Areas by the United Nations, in which any discharge from the cargo area of an oil tanker is strictly controlled.
All sea areas within 50 miles from the nearest land, where that coastal state is a signatory to MARPOL.
Limited ocean and sea areas, listed under the OPA-90 Act, inside which the discharge of oil is prohibited and the penalty for doing so is an unlimited fine and jail sentence.
Every oil tanker of 5 000 tonnes deadweight and above delivered on or after 1 February 2002 shall comply with intact stability whereby it must have a minimum GM (metacentric height) in port of:
Not less than 0,10 m.
Not less than 0,25 m.
I don’t know.
Not less than 0,15 m.
What are the three volumes of the IAMSAR Manual?
A – Command and Control; B – Communications; C – Rescue Procedures.
I – Planning and Preparation; II – Rescue Control; III – Reference.
I – Organization; II – Communications; III – Rescue Procedures.
I – Organization and Management; II – Mission Co-ordination; III – Mobile Facilities.
The DoS addresses the responsibility for the security of the water around the ship and the verification of increased threat levels.
True.
False.
With reference to ship stability, the letters “TPC” stand for:
Tonnes per Centimetre Immersion.
Tonnes per Centimetre.
Tipping Perimeter Centre.
Trim per Centimetre.
Why is it important to have good relationship on-board a vessel?
It encourages crew to extend their contract.
It will prevent accidents from happening.
It leads to better work performance and positive atmosphere among the crew.
Crew comes to know each others problems.
With reference to the exposure of “vapours” from oil cargoes, “Short Term Exposure Limit” value is determined by:
The airborne concentration of a toxic substance averaged over any 10 minute period, usually expressed in ppm.
The airborne concentration of a toxic substance averaged over any 15 minute period, usually expressed in ppm.
The airborne concentration of a toxic substance averaged over any 25 minute period, usually expressed in ppm.
The airborne concentration of a toxic substance averaged over any 30 minute period, usually expressed in ppm.
When commencing the cargo transfer at the terminal, the decision to commence the transfer is made by:
The mutual agreement of those in charge of cargo operation, both on board and ashore.
The person in charge of cargo operation at the terminal.
The person in charge of the chartering and operation of the vessel.
The person in charge of cargo operation on the vessel.
A “Pellistor” is:
It is the electrical sensor which detects low pressure in an Inert Gas generating control system.
It is a sensor that can be used in a combustible gas indicators to detect and measure flammable gas concentration as a percentage of its lower flammable limit.
I don’t know.
It is the common term applied to the metal, ceramic or other heat-resisting material which can cool even an intense flame below the temperature required for ignition, as utilised in a flame arrester.
What is meant be the term “sour crude”?
Crude oil containing hydrogen sulphide content greater than 0,1 % by volume.
Crude oil containing hydrogen sulphide content greater than 0,3 % by volume.
Crude oil containing hydrogen sulphide content greater than 0,5 % by volume.
I don’t know.
As per IMDG Code, the main criteria for drawing up classes for safe handling of hazardous substancesis on the basis of:
I don’t know.
Selective laboratory tests commissioned by the Committee.
Chronological order in which they have been assessed.
The type of hazard they present.
Any person who can assume overall charge of the ships crude oil washing operation must have:
They must have at least six months experience on tankers, be knowledgeable of the cleaning procedures and equipment applicable on board the vessel and be able to fully demonstrate understanding of the operation of the ODME equipment.
At least 12 months appropriate experience on oil tankers, have participated in at least two COW programmes and be fully knowledgeable of the contents of the Operations and Equipment Manual.
I don’t know.
They must have at least three months experience on tankers, have participated in at least six washing operations and be aware of the procedures associated with the completion of the Oil Record Book.
What statutory certificate is carried onboard to indicate that a tanker is in compliance with Annex 1 of the MARPOL convention?
Oil Record Book.
The International Oil Pollution Prevention (IOPP) Certificate.
I don’t know.
International Safety Guide for Oil Tankers and Terminals (ISGOTT).
When documenting Crude Oil Washing operations in the Oil Record Book, which of the following must be included in the sequence of entries?
The ullage in the tank at the commencement of washing.
The average oil cargo temperature during the washing operation.
The ship’s speed during the washing operation.
The method of establishing that the cargo tanks were dry.
If for some reason a vessel does not comply with a Classification Society’s requirements, what can a surveyor issue to the vessel enabling it to sail to the next port or for a period of time?
A Notification of Deficiency.
A revised Class Notation.
A Condition of Class.
A notification of Detention.
Prior carrying out a Crude Oil Washing operation, the tank from which the crude is to be used for washing is usually partially discharged. This is done so as to:
Ensure that all water settled in the tank is removed prior washing, so as to ensure that the fresh cargo can be loaded on top without fear of contamination.
Ensure that only the required quantity of oil are kept in the tank, so as to reduce the amount of slops retained on the ship.
Ensure that any settled water is removed from the tank and only “dry” crude is used for washing so as to avoid electrostatic hazards during washing.
When internally transferring any oil cargo within the vessel, the correct procedure would be to:
Obtain permission from the receivers and retain all e-mail correspondence for the attention of the cargo surveyors.
Transfer no more than 5 % of the total cargo volume at any one time.
Obtain permission from the charterers and document all operations fully in the Oil Record Book.
It is not necessary to obtain any permissions, provided the Captain makes an entry in the Deck Log Book, documenting his reasons for moving cargo.
“Door to door” shipment is covered under:
A Multi-Phase Bill of Lading.
A Through Bill of Lading.
A Destination Bill of Lading.
An Ocean Bill of Lading.
Oil tankers of 70 000 tons and above, delivered after 31 December 1979 shall be:
No requirement regarding number of slop tanks.
Shall be provided with at least 2 slop tanks.
I don’t know.
Shall be provided with slop tank.
Which of the following is a definition of a petroleum product which is “non-flammble”?
Petroleum having a flash point of 80 °C or above, as determined by the closed cup method of test.
Petroleum having a flash point of 60 °C or above, as determined by the closed cup method of test.
I don’t know.
Petroleum having a flash point of 100 °C or above, as determined by the closed cup method of test.
On oil tankers, Cargo tanks can be isolated from machinery spaces by:
All the answers are good.
Pump room.
Cofferdams.
Ballast tanks.
Where would you find the document relating to the “Condition of Freeboard Assignment” onboard?
With the Safety Construction Certificate.
With the Classification Records.
With the Loadline Certificate.
With the Structural Survey File.
To correctly report an oil spill in US waters:
The master of the vessel responsible for the spill must advise the Environmental Protection Agency National Incident Reporting Center (or the appropriate regional office) within 2 hours of the incident being reported to that person.
The person in charge must first report the spill to the National Response Center or, if not practicable, to the Environmental Protection Agency regional office or local US Coast Guard Marine Safety Office. This must be done immediately that person has knowledge of the spill.
The person responsible for the spill must report preliminary details to the appropriate State Police within 30 minutes of the accidental discharge taking place.
I don’t know.
Which of the following type of crude oil requires special consideration in terms of carriage and cleaning?
Reconstituted Crude.
Medium Crude.
Paraffinic Crude.
Sweet Crude.
What is to be considered when deciding the position of the accommodation on an oil tanker?
I don’t know.
A single failure of deck or bulkhead shall not allow fumes into the accommodation spaces.
They must be at the after end of the vessel.
There are no restrictions to the position of the accommodation.
After passing through the scrubbing tower of an inert gas system, the approximate level of carbon dioxide in the inert flue gas should be:
3 %.
21 %.
1 %.
13 %.
The maximum permitted oxygen content in the inert gas supply when inerting a cargo oil tank prior to gas freeing is:
8 % by volume.
12 % by volume.
5 % by volume.
I don’t know.
What is the density of the undiluted vapour that is liberated from crude oil?
1,5 times that of inert gas.
I don’t know.
It doesn’t matter.
2 times that of inert gas.
The purpose of expansion couplings to be fitted on the longitudinal pipelines of oil tankers is:
To allow the pipelines to follow the ships flexing movement when pitching.
To allow the pipeline to expand when loading a hot cargo through the pipeline.
To prevent the pipeline from cracking when the ship suffers from Racking stresses.
I don’t know.
With reference to oil cargo calculations, API refers to:
American Petroleum Institute.
Approved Petroleum Inspector.
Average Petroleum Index.
Aggregate per Inch.
As per IMDG Code, the term “separated from” can be defined as:
I don’t know.
Either in a vertical or horizontal separation: if the intervening decks are not resistant to fire and liquid, then only in a longitudinal separation is acceptable. For “on deck” stowage, this means a distance of at least 12 metres. This distance also applies to one package stowed “on deck” and another in an upper compartment.
In different compartments or holds when stowed “under deck”. Provided an intervening deck is resistant to fire and liquid, a vertical separation may be accepted as equivalent. For “on deck” stowage, this segregation means a distance of at least 6 metres.
With an intervening compartment, being both a vertical and horizontal separation. Provided an intervening deck is resistant to liquid and fire, a vertical separation of 6 metres is acceptable. For “on deck” stowage, this segregation means a distance of at least 12 metres irrespective of compartment divisions.
The «Cargo Handling and Stowage, Management, Oil Tanker» subject provides both theoretical and practical knowledge on safely working with electrical equipment. Mastery of this material is a key indicator of an employee’s competence in their role aboard a vessel. Cargo handling and stowage on an oil tanker involve the processes of loading, unloading, and storing liquid cargo, such as crude oil or petroleum products. These operations require meticulous planning, strict adherence to safety protocols, and compliance with industry regulations to ensure the safe and efficient transportation of liquid cargo.
- Version: 4.1, 5.0, 5.1, 6.0.0, 6.0.8, 6.0.10.
- Test type: STCW.
- Department: Cargo Handling and Stowage.
- Level: Management.
- Vessel type: Oil Tanker.
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