Dangerous, Hazardous and Harmful Cargoes Flashcards
You have been carrying a liquid with flammable limits of 1% to 7% mixture with air. If your instructions say than men shall not enter the tank if the vapor concentration is over 15% of the LEL, what is the maximum allowable percentage of vapors for men
0.15%
What is the maximum oxygen content below which flaming combustion will no longer occur?
15%
Ambient air, which you normally breathe, contains what percent of oxygen?
21%
You are tending the lifeline of a person who has entered a compartment wearing a breathing apparatus. How many tugs of the lifeline mean “Are you all right”?
1
You are tending the lifeline of a man who entered a compartment using a Breathing apparatus. How many tugs on the lifeline indicate the man should advance?
2
How many grades of petroleum products are combustible/
2
You are in a tank wearing a breathing apparatus and you desire to return topside. How many tugs of the lifeline mean “Take up slack”?
3
You are tending the lifeline of a man who entered a tank using a breathing apparatus. How many tugs on the lifeline indicate that the man should come out immediately?
4
Dangerous goods are divided into _____ classification?
9
The angle of heel due to the shift of grain shall not be greater than ____degrees except that an administration giving authorization in accordance with Regulation 10 of SOLAS 1992 require a lesser angle of heel if it considers that experience shows this to be necessary.
12
The problem involved in the carriage of bulk cargoes was recognized by the delegates of the _____ International Conference for the Safety of Life at Sea (SOLAS).
1960
A vessel’s light displacement is 12,000 tons. It’s heavy displacement is 28,000 tons. When fully loaded it carries 200 tons of fuel and 100 tons of water and stores. What is the cargo carrying capacity in tons?
15700
A tank hold 130 tonnes when full of fresh water. Find how many tonnes of oil of relative density 0.75 it will hold, allowing 5% of the volume of the tank for expansion in the oil.
92.6 tonnes
Oil of relative density 0.75 is run into a tank measuring 6m x 4m x 8 m until the ullage is 2 meters. Calculate the number of tonnes of oil tank then contains.
108 tonnes
A tank measuring 9m X 5m X 4m is being filled with oil of relative density 0.95. Find how many tonnes of oil in the tank when the ullage is 2 meters.
85.5 tonnes
A tank when full will hold 120 tonnes of salt water. Find how many tonnes of oil relative density 0.80 it will hold, allowing 4% of the volume of the tank for expansion.
89.9 tonnes
A tank holds 120 tonnes when full of fresh water. Find how many tonnes of oil of relative density 0.84 it will hold.
100.8 tonnes
Oil of relative density 0.85 is run itno a tank measuring 8m x 5m x 8m until the ullage is 3 meters. Calculate the number of tonnes of oil the tanks then contains.
170 tonnes
A tank when full will hold 110 tonnes of salt water. Find how many tonnes of oil relative density 0.75 it will hold, allowing 5% of the volume of the tank for expansion.
76.5 tonnes
A tank holds 120 tonnes when full of fresh water. Find how many tonne of oil of relative density 0.84 it will hold, allowing 2% of the volume of the tank for expnsion in the oil.
98.8 tonnes
In the segregation of packages containing incompatible dangerous goods and stowed in the conventional way, what is meant by the single subsidiary risk label “1”?
“away from”
In the segregation of packages containing incompatible dangerous goods and stowed in the conventional way, what is meant by the single subsidiary risk label “2”?
“separated from”
The flash point of vinyl chloride is ____.
-108°F
A tank when full will hold 130 tonnes of salt water. Find how many tonnes of oil relative density 0.909 it will hold, allowing 1% of the volume of the tank for expansion.
114.1 tonnes
A tank measuring 8m X 6m X 7m is being filled with oil of relative density 0.9. Find how many tonnes of oil in the tank when the ullage is 3 meters.
172.8 tonnes
A tank when full will hold 100 tonnes of salt water. Find how many tonnes of oil relative density 0.85 it will hold, allowing 3% of the volume of the tank for expansion.
80.4 tonnes
Combustible liquid is defined as any liquid having a flash point above _______.
80°F
Oil of relative density 0.80 is run into a tank measuring 6m x 4m x 7m until the ullage is 2 meters. Calculate the number of tonnes of oil the tank then contains.
96 tonnes
Oil of relative density 0.75 is run into a tank measuring 6m x 4m x 8m until the ullage is 2.5 meters. Calculate the number of tonnes of oil the tank then contains.
99 tonnes
In the segregation of packages containing incompatible dangerous goods and stowed in the conventional way, what is meant by segregation “separated longitudinally by an intervening complete compartment or hold from”?
A minimum horizontal separation of 24 meters when stowed on deck
In the segregation of packages containing incompatible dangerous goods and stowed in the conventional way, what is meant by segregation “away from”?
A minimum horizontal separation of 3 meters projected vertically is obtained
Barium cyanide solid is classed as “poison B” and cannot be stowed near:
Acids
Another name for anhydrous ammonia is ____.
Ammonia gas
Flammable liquid having a Reid vapor pressure of 8 ½ pounds or less and a flash point of 80°F or below is grade ____.
C
What entry on a dangerous cargo manifest concerning the classification of a cargo is correct?
Class 8
The chemical formula for hydrogen sulphide is ___.
H2S
A group of organic compounds consisting exclusively of the elements carbon and hydrogen is:
Hydrocarbons
Which of the following is the highest hydrocarbon gas?
Methane
In LNG carriage, RGB means:
return gas blower
A vehicle with wheels and fitted with a tank or tanks intended for the transport of gasses, liquids or solids by both road or sea modes.
road tank vehicle
You are arriving in Edinburgh to load 1000 cases of Scotch whiskey. The cases are packed with 12 bottles of one liter each to a case. The flash point of the scotch is 220°F. Which of the following is TRUE?
The Scotch is not required to be shipped under the requirements of the hazardous materials regulations
In the segregation of packages containing incompatible dangerous goods and stowed in the conventional way, what is meant by the single subsidiary risk label “3”?
“separated by a complete compartment or hold”
In the segregation of packages containing incompatible dangerous goods and stowed in the conventional way, what is meant by the single subsidiary risk label “4”?
“separated longitudinally by an intervening complete compartment or hold from”
At the start of loading operations, drafts fwd = 6.30 mtrs, aft = 6.70 mtrs. After loading, a mean draft of 7.25 mtrs was observed. If TPC is 22, how much cargo was loaded?
1,650 tons
The displacement of your ship is 6,400 tons when floating at density 1025. Your ship has to proceed to an anchorage where the density of water is 1008. Find how much weight of cargo to be discharged if your vessel is to remain at salt water draft.
106 tons
A tank when full will hold 130 tonnes of salt water. Find how many tonnes of oil relative density 0.909 it will hold.
115.3 tonnes
A tank holds 150 tonnes when full of fresh water. Find how many tonnes of oil of relative density 0.80 it will hold, allowing 3% of the volume of the tank for expansion in the oil.
116.4 tonnes
What is the quick freezing temperature of non-living organic cargoes?
-20 degs C
At the commencement of loading at 0800H, draft fwd was 4.30 mtrs, aft 4.50 mtrs. The stevedores worked continuously till 1800H, at which time drafts were read as follows: fwd 4.65 mtrs at 4.75 mtrs. If the TPC at this draft is 25, what is the rate of load
75 tons per hour
In the segregation of packages containing incompatible dangerous goods and stowed in the conventional way, what is meant by segregation “separated by a complete compartment or hold from”?
a minimum horizontal separation of 12 meters when stowed on deck
In the segregation of packages containing incompatible dangerous goods and stowed in the conventional way, what is meant by segregation “separated from”?
a minimum horizontal separation of 6 meters when stowed on deck
What produces the most dangerous vapors?
Anhydrous ammonia
Which of the following produces the MOST dangerous vapors?
Anhydrous ammonia
Another name for coal naphtha that would appear on a dangerous cargo manifest is:
benzene
The chemical formula for methane is:
CH4
A petroleum liquid has a flash point of 135°F. This liquid is classed as a grade ____.
D flammable liquid
What is the meaning of ERS system on board liquefied gas carriers?
emergency release system
The designations A,B,C,D, and E grades of cargo refer to the _____.
Flash point range and Reid vapor pressure index of petroleum products
What is the proper first aid for the LPG in the eyes?
flash the eye with plenty of water
The only cargo whose vapour may be utilized as fuel is _____.
Methane
The simplest hydrocarbons which is the main constituent of natural is:
methane
Combustible liquids are divided into how many classes?
Two
A “Heterogeneous cargo” refer to: I.A bulk carrier loaded with steel II. A bulk carrier loaded with heavy ore
Both I and II
The label required on cases of common fireworks should read:
“explosive C”
In the segregation of packages containing incompatible dangerous goods and stowed in the conventional way, what is meant by the single subsidiary risk label “X”?
“no segregation required”
The residual area between the righting arm curve and heeling arm curve shall not be less than _____.
0.075 meter-radian
The intact stability requirement of any ship carrying bulk grain should be such that the initial GM, after correction for free surface of liquids in tanks, shall not be less than _____.
0m 18s
The initial metacentric height (GM), after correction for the free surface effects of liquid in tanks, shall be not less than _______.
0m 18s
Using a safety factor of five, determine what is the safe working load for 3-1/2 inch manila line with a breaking stress of 4.9 tons.
0.98 tons
Using a safety factor of 6, determine the safe working load of manila line with a breaking stress of 8 tons.
1.33 tons
If the height of the timber deck cargo exceeds 4 meters, the spacing of the lashings should be:
1m 30s
On a cargo ship within a seasonal winter zone in winter, the height of the deck cargo above the weather deck shall not exceed _____ of the extreme breadth of the ship:
Jan 3, 2015
In a partly filled compartment, a division, if fitted, shall extend from ______ of the maximum breadth of the compartment above the level of the grain surface and to the same distance below the grain surface.
Jan 8, 2015
Spontaneous heating of coal rapidly accelerates at the approximate minimum temperature of:
100° F
The stability requirements of vessels loaded with bulk grain should be such that any angle of heel due to grain shift shall not exceed _____.
12 degrees
The angle of heel due to the shift of grain shall not be greater than what angle?
12°
In union purchase, the angle between the two runners must not exceed:
120 degrees
A tank when full will hold 150 tonnes of salt water. Find how many tonnes of oil relative density 0.89 it will hold, allowing 2% of the volume of the tank for expansion.
127.6 tonnes
Grade D combustible liquids have a maximum flash point of:
149 F
On a tanker loading maximum range:
-15 C to 46 C
The approx. rolling period of a dry cargo vessel with GM 3.0 ft, beam 60 ft is:
15 seconds
Grade E combustible liquids have a flash point of ____.
150°F or above
Your tanker is loading a hazardous cargo. The allowance for expansion is based on ambient temperatures of what maximum range?
-18° C to 46° C
The package stowed at the upper outboard edge of the stow of the timber deck cargo should be secured by at least how many lashings?
2 each
What is the maximum length of timber shoring when securing a container?
2 meters
A nylon line is rated at 12,000 lbs. breaking strain. Using a safety factor of 5, what is the safe working load (SWL)?
2,400 lbs
Timber shoring containerization cargo should not exceed what length?
2m 30s
The Port Authority will normally require notification at least _____ in advance of the transport or handling of dangerous substances, including those which are not discharged at that port.
24 hours
Ten triangular piles of piping on the pier are to be loaded - each pile has a 20 foot base, is 15 feet high and 30 feet long. If the breadth of the hold is 60 feet and the piping is to be stowed fore and aft in a 30 foot space, how high will it stow?
25 feet
A normal safe working load for used nylon rope in good condition is __________.
25% of its breaking strain
Uprights must be spaced at intervals not exceeding:
3m
A nylon line is rated at 15,000 kgs. Breaking strain. Using a safety factor of 5, what is the safe working load (SWL)?
3,000 kgs
All ships require regular survey carried out by a surveyor of a classification society, this should preferably take place in a drydock, the period between in-dock survey can be extended up to:
30 months
Usng a safety factor of five, determine the safe working load of a line with a breaking strain of 20,000 kgs.
4,000 kgs.
The wire rope used for cargo handling on board your vessel has a safe working load of eight tons. It shall be able to withstand a breaking test load of __________.
40 tons
What is the equivalent of a “Barrel” as a unit of liquid measurement?
42 U.S. gallons at 60 deg. Fahrenheit
The “Barrel” as a unit of liquid measurement is equivalent to:
42 US gallons at 60 deg fahrenheit
Using a safety factor of 6, determine the safe working load of a line with a breaking strain of 30,000 pounds.
5,000 lbs.
Specific requirement of the IMO Grain Code require that shifting boards shall have thickness of not less than _____, be grain tight and where necessary, supported by uprights.
50 mm
When goods in different compatibility groups are transported on deck, they should not be stowed less than ____.
6 meters apart
The pre-wash procedure for ships carrying non-solidifying substances which have a viscosity equal to or greater than 25 mPa at 20 degrees Celsius in hot water wash of at least _______.
60 deg C
The maximum unsupported span, with reference to the requirements of the International Grain Code, for shifting boards of 3.0 meters shall have a thickness of:
60 mm
You are loading a cargo of canned goods with a stowage factor of 65. If you allow 15% for broken stowage, how many tons can be loaded in a space of 55,000 cubic feet?
719 tons
The proportion of nitrogen in inert gas is approximately:
77% by volume
A vessel’s hold has a bale capacity of 13,901.6 cubic meters and grain capacity of 15,446.3 cubic meters and, a cargo of barley in bag is to be loaded with stowage factor of 1.67 cubic meters per ton. What is the amount of cargo that can be loaded in the said hold?
8,324.3 metric tons
A tank is loaded with 8,500 barrels of gasoline. The temperature of the product is 70°F (21°C), and it has a coefficient of expansion of .0008. The net amount of cargo loaded is __________.
8,432 barrels
A tank is loaded with 9,000 barrels of gasoline. The temperature of the product is 80°F (27°C), and it has a coefficient of expansion of .0008. The net amount of cargo loaded is __________.
8,856 barrels
Flammable liquid means any liquid which gives off flammable:
80°F
Flammable liquid means any liquid which gives off flammable vapors at or below _______.
80°F (26.7°C)
A tank is loaded with 9,800 barrels of gasoline. The temperature of the product is 75°F (24°C), and it has a coefficient of expansion of .0008. The net amount of cargo loaded is __________.
9,682 barrels
Which vessel is to be loaded full but not down?
a break-bulk vessel loaded with palletized cargoes
The supplement to the IOPP Certificates contains what type of data?
A checklist of the equipment installed for controlling the discharge of oil
What is the best instrument for establishing a safe working area before welding in a confined space?
A combination combustible gas and oxygen indicator
Which of the following instruments is suitable for determining the presence of explosive concentrations of fuel oil vapors in tanks?
A combustible gas indicator
Progressive flooding may be indicated by:
a continual worsening of list or trim
Protective clothing must be worn while sampling hazardous cargo on a tankship, and as a minimum includes __________.
a face mask and/or goggles
Reid vapor pressure is __________.
a measurement of the amount of flammable vapors given off by a liquid at a certain temperature
On a multiple-product chemical tanker you are to load DIETHYLAMINE. Which is not a requirement for transporting this product?
A person taking samples must wear protective clothing
Petroleum cargo tanks should not be topped off at deck level when loading on a cold day because:
a subsequent temperature rise will cause the cargo to overflow
Cargo transfer operations on a tank vessel need not be discontinued when:
A tug comes alongside while the tanker is loading grade D and E cargoes
A petroleum liquid is said to be grade D combustible liquid flash point is:
above 80 deg F but below 150 deg F
All the ferrous components of a ship will sustain strong corrosive action in the presence of:
acid waters
During loading of dangerous goods a package is dropped. Despite damaging the packaging the product can be clearly seen and is not damaged. What should be done?
Advise the Master
When is a tank considered to be gas-free?
After satisfactory testing with an oxygen analyzer
Electric cargo winches have an overload safety device which normally cuts the current to the winch motor __________.
after torque causes line pull to exceed the rated capacity of the winch
Each ship carrying dangerous goods in packaged form shall have which of the following?
all choices
The publication Merchant Shipping (Dangerous Goods) Regulations and IMDG Code are on board in connection with what cargoes?
all choices
The following cargo pumps capacity depends upon:
all of the above
Which of the following is/are advantage/s of “crude oil washing” (COW):
all of the above are correct
What are the risks associated with enclosed or confined spaces?
All of these
What precautions should be taken before entering a suspect space?
All of these
What procedures should be agreed on before entry into an enclosed cargo space?
All of these
Refrigerated cargo space should be provided adequate dunnage in order to:
all of these
Ship officers should check every cargo hold after it is filled with bulk grain to ensure:
All void spaces are filled
Ship’s officers should check every cargo compartment after it is filled with bulk grain to ensure _____.
all void spaces are filled
When stowing bagged cargo, you wish to maintain a vertical wall or bulkhead as the stowage progresses. The bulkhead extends from one side of the vessel to the other and exceeds one section forward of the square, from the lower holds up to the tween decks. Stability of the bulkhead will be maintained by _____.
Alternating the stow with one fore and aft and the next tier athwartship.
Ullages on tankers are measured from __________.
an above-deck datum such as the top of the ullage pipe
Threshold Limit Value (TLV) is the maximum concentration of a substance that should be present in:
an atmospheric sample
All handling and stowage of packaged hazardous materials on board a domestic vessel engaged in foreign trade shall be done under the supervision of __________.
an officer assigned to the vessel
Deficient oxygen content inside a chain locker can be detected with:
an oxygen indicator
It is the angle of heel for which the openings in the hull, superstructure or deck houses, which can not be closed weather tight is immersed.
angle of flooding
The angle of heel at which openings in the hull, superstructures or deckhouses, which cannot be closed weather tight is immersed, is called:
Angle of Flooding
The angle of heel for which the openings in the hull, superstructure or deck houses, which can not be closed weather tight is immersed, is called:
Angle of flooding
This is defined by the International Grain Code as an angle of heel at which the openings in the superstructure or deckhouses which cannot be closed weathertight is immerse.
angle of flooding
It is the angle between a horizontal plane and the cone slope of non-cohesive granular material.
angle of repose
What do you call the maximum angle at which grain, coal or other products loaded in bulk will retain their form or remain in a heap?
angle of repose
The maximum angle at which grain, coal or other products loaded in bulk will retain their form or remain in a heap is called:
angle of repose
The maximum angle at which grain, coal or other products loaded in bulk will retain their form or remain in a heap is called:
angle of repose
The maximum angle at which grain, coal or other products loaded in the bulk will retain their form or remain in a heap is called:
angle of response
Static electricity may be built up by the:
Any of the above
A limit on the range of residual dynamic stability which can be considered effective is defined by which of the following:
any of the above whichever is least
When using the oxygen indicator, how long should you wait after the sample is drawn into the instrument before reading the meter?
at least 10 seconds
The minimum temperature required to ignite gas or vapor without a spark or flame being present is called __________.
autoignition temperature
The standard unit of liquid volume used in the petroleum industry, as well as the tanker industry, is a __________.
Barrels
The code for safe practice for solid bulk cargoes are most commonly known as __________.
BC code
The absence of smell of petroleum gas should never be taken to indicate the absence of a toxic gas. Why?
because toxic gas may dull the sense of smell
Volatile petroleum oil has a flash point:
below 60°C
Another name coal naptha that would appear on a dangerous cargo manifest is:
Benzene
Your containership has a container displaying a hazardous cargo placard. The placard has the number 2224 on it. This indicates that it is carrying what cargo?
Benzonitrile
An “eductor” uses what principle?
bernoulli principle
A relief valve for a cargo pump is generally installed _____.
Between the pump and discharge valve
What colored label should corrosive liquids and acids should have?
black and white
Corrosives are labeled with a _____ placard.
black and white
Which begins when the tank is almost empty?
bottom wash
Cargoes that might leak from containers are called:
bulk cargoes
What is the principle behind producing inert gas on board ship?
by the combustion of fuel oil to produce exhaust gases with an oxygen content of less than 5%
How is cooling / cleaning water supplied to the inert gas scrubber tower?
By the scrubber sea water pump
Your ship is carrying hazardous cargo. During a daily inspection, you notice that some of the cargo has shifted and several cases are broken. You should FIRST ___________.
call out the deck gang to jettison the cargo
The word “toxic” is used to describe a petroleum liquid when it:
can harm you if it touches a sensitive part of the body
Different types of cargoes require different methods of slinging, what would be the best type of sling for barrels and drums?
Can hooks
it means a log which is “slab-cut” or ripped lenghtwise so that the resulting thick pieces have two opposing, parallel flat sides.
Cant
A hygroscopic cargo is defined as a cargo _______.
capable of absorbing moisture in the form of a gas
You have orders to load cargoes of carbon disulfide, disopropylamine and pyridine on your multi product tanks. Which statement is TRUE?
Carbon disulfide must be carried in nos. 1 and 2 center tanks and disopropylamine in nos. 1 and 2 wing tanks.
Which toxic gas is a product of incomplete combustion, and is often present when a fire burns in a closed compartment?
carbon monoxide
Materials which at least contain some fine particles and some moisture, usually water, although they need not be visibly wet in appearance are called:
Cargoes which may liquefy
What is the title of Section 8 in the Code of safe practices for solid bulk cargoes (BC Code)?
cargoes which may liquefy test procedure
The wooden planking that protects the tank top from cargo loading is called __________.
Ceiling
Crewmembers should use goggles and a facial respirator when loading or discharging:
cement in bulk
Which pump must always be primed?
Centrifugal pump
The carriage of dangerous goods are provided for under SOLAS chapter ____.
Chapter VII
Carriage of dangerous cargoes either or in package form is covered under SOLAS ___________?
Chapter VIII
Gases carried in tankers are usually either hydrocarbon or chemical. VCM (Vinyl Chloride Monomer) is a _____ gas.
Chemical
Under the IMDG code, all hazardous cargoes are assigned to a category representing their major hazard. These categories are assigned a number and are called:
class
Explosives, as per International Maritime Dangerous Goods code, are classified as:
Class 1
Under the International Maritime Dangerous Goods code, explosive are classified as:
Class 1
