USE OF nitro gen
Click in the boxes next to mediums commonly used in drying cargo tanks
Denatured air >
 <txt crct="8">Nitrogen.</txt>
 <txt crct="45">De-humidified air.</txt>
 <txt crct="57">Deodorized air.</txt>
What should be reached before commencing any operation involving nitrogen
Agreement on completion time.</txt>
Agreement on who will operate the shore valves.</txt>
Joint calculation of the minimum nitrogen quantity required.</txt>
The full agreement on, and understanding of all aspects of the operation by all parties involved
Oil tankers use an inert atmosphere specifically to prevent
Click on the boxes next to the two main reasons behind the use of nitrogen on chemical tankers
What colour identification strip is commonly used to mark nitrogen lines?
Allowing for regional variations) regular nitrogen cylinders are commonly
The storage temperature of liquid nitrogen is approximately
Click on the boxes to indicate the two types of shipboard nitrogen generator
What additional process can be applied to de-humidified air to make it more efficient in drying tanks
Inert gas drawn from an in-line unit in the main or auxiliary boiler exhaust, cannot normally be used in chemical tanker operations because
Chemicals tankers operating predominantly in which of the following trades routinely use oil-fired inert gas (assuming they are fitted with the appropriate generating equipment
Which regulations detail the requirements for the control of tank atmospheres in compartments containing chemicals
What size of cargo tank would cause special inerting requirements (as listed under the 2000 Amendments to the SOLAS 1974 Protocol) to be implemented on a chemical tanker carrying low-flash products
Which International Chamber of Shipping publication contains specific details on the use of nitrogen on chemical tankers
Inert gases create which of the following
Unconsciousness resulting from entering into an inerted space without breathing apparatus can occur earliest in which of the following times?
The term “Asphyxiates” is applied to
The exhaust gas from a nitrogen generator exhaust outlet can typically contain which of the following oxygen levels
Under normal circumstances, gas moves through a pipeline more easily than liquid. True or false
Approximately how long will it take to deliver 5000 cubic meters of nitrogen gas through a 100mm (4”) pipeline at 5.2 bar (75 psi)
When purging a cargo tank with nitrogen, the critical relationship is
What is “dew point”
If a ship enters a channel, where the water is relatively cold and still, what may occur in the cargo tanks
Which of the following statements is an accepted definition of purging
If an amount of nitrogen equivalent to 3.5 times the volume of a cargo tank was injected into that space (by dilution), what level of oxygen might it be reasonable to expect at that time?
Which method of atmosphere replacement is generally practised on chemical tankers
Which of the following cargoes is an example of one loaded in a tank where the surrounding empty voids and ballast tanks will also be inerted
Two of the terms below indicate methods by which a pipeline may be cleared to a ship. Which are they
You have just completed loading 450 tonnes of Caustic Soda to two tanks on your vessel and will be trading to NW Europe with an ETA Rotterdam of December 6th. What would be a prudent operational measure to carry out?
You are the officer on watch and are about to undertake a line clearing operation from shore. What must you ensure is available in the required tank?
Why is a hose cleared prior to disconnection? Click on the boxes next to the relevant reasons
You have just loaded a cargo of Toluene. What particular hazard must you be aware of in terms of line clearing
The maintenance of a nitrogen pad is also sometimes referred to as
Putrefaction is a term applied to which of the following terms
You are to receive cargo from rail cars. Which of the following risks should you be specifically aware of?
You are discharging vegetable oils to rail cars on shore. What additional precautions is it prudent to adopt
Click on the boxes to indicate the possible purposes of additives
Which of the following is a true statement?
Which of the following items are required to be indicated on a Certificate of Inhibitor
Which of the following chemicals has an inhibitor added for marine transportation
Which of the following items must a vessel legally have on board prior to loading a cargo of Styrene Monomer
Which of the following items have to be entered on an enclosed space entry permit? (Select all applicable
What term is applied to the discharge of rail cars by the application of nitrogen
By injecting nitrogen into the shore pipeline during the loading process, which of the following advantages may be obtained
The traditional manual dew point meter employs which of the following substances
If, during loading of liquid nitrogen, drops of the liquid are allowed to contact the steel deck, which of the following risks is created
Symptoms of skin damage resulting from contact with liquid nitrogen may resemble which of the following conditions
Nitrogen from cylinders will need to pass through which of the following for safe use on deck
The two parts of the rotating bed in a de-humidifier unit are referred to as
Approximately how much nitrogen is there in the air we breathe
When maintaining a nitrogen pad on passage, a daily application will involve:
Indicate two types of liquid pad which may be encountered in the carriage of certain specific liquid chemicals
#169 Oil Tanker Adv
What is the main quencher for an oil tanker
What is the meaning of the abbreviation ABC due to first aid
Air, Breathing, Circulation
What do you call the method used for bone-soft part injures
ICE
What does VLCC means
Very Large Crude Carrier
What does OBO means
Ore Bulk Oil
What kind of cargo can be carried with an O/O ship?
Ore and Oil simultaneously
From where on board can you find out the different types of protection equipment regarding where placed, how much, how many ans
Ship safety plan
Before any portable gas indicators are brought to the measuring spot, what is very important to do with these analysers first
Full calibr
What kind of extinguishing-remedy would you choose to put out electrical fire
Dry extuinguishing remedy
The fire control draft on board is called the «safety plan» and shall be posted onboard. In port, a copy of this plan shall in addition be available from somewhere else. Where shall this copy be available
At the gangway
What is the meaning of LEL
Lover explosive limit
When re-inerting a cargo tank before commence air venting, what is the maximum oxygen content in the supplied inert gas
5%
What is the common expression for all chemical compounds that includes carbon and hydrogen
Hydrocarbones
You are going to enter a tank to lift out some sediments. What kind of permits are needed to be issued before entering
ESE and CW permit
You find the element carbon in only two different natural conditions. Which
Graphit and diamont
What is the maximum oil content allowed in the arrival ballast water
15ppm
What is the maximum oil content in the ballast/washing water allowed to be pumped over board during a voyage
30l p Nm
What is the proper name of CH4
Methane
What is the name of the device used for supervising all the ballast water to be pumped over board
ODME
In which Annex of MARPOL do we find regulation for the prevention of pollution by oil
Annex I
You are discovering a small leak of oil at the manifold during discharging. What is you first action
Call immediately the person in charge
Near by the access to shore a certain plan is to be kept in case of a emergency situation. What kind of plan
EM PL
What is it called when it is possible to ignite the vapour above the oil
FP
What is the total quantity of the particular cargo you can discharge into the sea from a new tanker
1/30 000
In which Annex of MARPOL do we find regulation for the prevention of pollution by garbage from ships\
Annex V
What does the abbreviation TLV means
Treshold limit value
For what purpose do we use inert gas onboard oil carriers
We used inert gas to replace the oxygen…
What is the meaning of LOT
Load on Top
What is the maximum volume percent oxygen allowed in the tank during COW
Not excesd 8%
Which oxygen content shall we measure before entering a tank or space after venting
21%
In which way may intake of poisoning material occur
all
What kind of fixed extinguishing plant is installed in an oil tankers engine room and pump room
CO2
What is the meaning of UEL
Upper explosive limit
When did the revised schedule for phasing out oil tankers and the new regulation banning the carriage of heavy grade oil in single-hull oil tankers enter into force
On 5 april 2005
What is the Permissible Exposure Limit (PEL) of hydrogen sulphide expressed as a Time Weighted Average (TWA
10ppm
What is the flammable area for Propane
2.0-9.8
Any discharge into the sea of oil or oily mixtures from the cargo area of an oil tanker shall be prohibited except when
50Nm
What is the normal clearance of the main suction (bellmouth) from the tank bottom to the stripping suction in the cargo tank
10cm
Where do we find regulation regarding venting system on tankers
ISGOT marpol
Where venting is by high-velocity discharge valves, what is the minimum distance above the cargo tank deck
2m
What is the usual activation point for high level alarms in cargo tanks
95%
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 10% LFL
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 RWP
What is the requirement to capacity of the inert gas plant
125%
What is the requirement to capacity of stripping system during bottom COW of the cargo tanks
1,25
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
1m
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
60 centi..
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 programme
10o C
What is the requirement to number of drive units where the drive unit is not integral with the cleaning machine
1time