WorksheetsFungsi 8
Total questions: 95
Worksheet time: 48mins
As a general rule, what is the minimum flash point of an oil used as a liquid fuel on board?
60ºC
30ºC
There is no limit
10ºC
Besides certain other factors, a BOILOVER takes place:
When the container also contains water
When the container is nearly full
When the product is a combustible liquid
If the tank has a floating roof
In which one of the following an oil, the flash point of which only needs to be over 43°C, may be used?
In emergency generators
In inert gas generators
In the main engine
In the kitchen
What are the main components of the atmospherical air?
O2: 21% N2: 78% H2O: traces CO2: traces, Rare gases: traces
O2: 50% N2: 50% H2O: traces CO2: traces Rare gases: traces
O2: 21% N2: 72% H2O: 5% CO2: 2% Rare gases: traces
O2: 75% N2: 10% H2O: 5% CO2: 5%, Rare gases: traces
What is the factor that makes the difference between a deflagrating and a detonating explosion?
The speed of the shock wave created by the initial combustion
The material which is at the origin of the explosion (powder or gas)
The confinement of the place where the explosion occurs (inside or outside)
The initial pressure, temperature and moisture content
A class "D" fire involves what type of material?
Metals
Gases
Liquids
Wood or other carbonaceous material
According to European standards (E.N.) fire can be classified…
A,B,C,D
A,B,C
A,B
A,B,C,D,E
According to their physical state, extinguishing agents may be classified in to:
Solid, liquid and gases
Synthetic, proteinic, gases and liquid
Proteinic and synthetic
Solid, proteinic and gases
Among the additives used to improve the effectiveness of water in the fight against fire there are the moisturing ones. What is the task they perform?
They reduce the surface tension of water
They protect the fuel with a thin covering that holds up the ignition
They increase the viscosity of water
They protect the fuel with a thin covering that holds up the ignition and they increase the viscosity of water
Fire provokes:
Gases, flames, smoke and heat
Radiation and smoke
Vapours, radiation, gases and flames
Vapours, smoke and flames
For which of the following groups of substances or materials is the use of water as an extinguishing agent dangerous?
Sodium hydrosulphite , potassium hydroxide, magnesium
Wood, rubber, oil
Gas-oil, oily rags, synthetic textiles
Alcohol, paraffin
How does low expansion foam act as an extinguishing agent when dealing with oil fires?
By smothering and also by providing some cooling
By cooling only
By smothering only
The heat from the fire causes the foam to produce an inert gas which gradually extinguishes the fire
Hydrocarbon gas encountered in oil tankers cannot burn in an atmosphere containing less than approximately what percentage of oxygen (by volume)?
11%
13%
15%
17%
If a fire starts in the fuel tanks of a vessel, the fire will be ?
A class B fire
A class A fire
A class D fire
A class E fire
In general, what is the best extinguishing agent to put out a class A fire?
Water
Carbon dioxide (CO2)
Dry chemical powder
Foam
In which ways is heat transmitted?
Conduction, convection and radiation
Delay, conduction, radiation
Gasification, conduction and convection
Radiation and gasification
The extinguishing agent which can be applied on any fires of class A, B, or C is:
Multipurpose powder
Sprayed water
Halon
CO2
The fire point is
The minimum temperature at which a combustible gives off vapours that may burn in contact with oxygen in air, and at which combustion persists once the source of ignition has been removed
The minimum temperature at which a combustible gives off vapours that may burn when they are in contact with oxygen in air, when there is a presence of activation energy; but with no capacity of maintaining combustion.
A process of chemical decomposition by oxidation-reduction at unusually high temperature, in areas with slight ventilation.
The maximum pressure that will be reached when a given combustible burns into an enclosed space
The lowest temperature at which a liquid will give off sufficient vapors to form a flammable mixture with air is known as the:
Flash point
Fire point
Lower explosive limit
Threshold limit value
The method of extinction by smothering is based on this basis;
The fire is extinguished by avoiding the contact between the fuel vapours and the oxygen
The fire is extinguished by eliminating the heat so as to obtain a temperature at which the fuel doesn't give off enough vapour
The fire is extinguished by interrupting the chain reaction, as it stops the transmission of heat by means of the action of chemical agents
The fire is extinguished by avoiding the contact between the fuel vapours and the hot surface
The necessary elements to create fire are
combustible, oxygen, heat and chain reaction
combustible, oxygen, flames and chain reaction
combustible, air, flames and gas
heat and chain reaction
To maintain a fire, three conditions need to be met: Oxygen, combustible material and sufficient temperature for combustion. What subject must be removed to extinguish the fire?
Either of the mentioned alternatives
Heat, Oxygen and combustible material
Oxygen
Combustible material
Water is the extinguishing agent which is the most widely employed and its action as an extinguishing agent is due to a combination of the following phenomena:
Cooling, smothering and dispersion
Cooling, inhibition and dispersion
Smothering and dispersion
Smothering and inhibition
What are the characteristics of CO2?
All the mentioned alternatives.
It displaces oxygen.
It is heavier than oxygen.
It is in itself not dangerous (not poisonous)
What class of fire involves gas?
Class C fire
Class A fire
Class B fire
Class D fire
What class of fire involves liquids?
Class B fire
Class A fire
Class C fire
Class D fire
What class of fire is a smoldering fire of wood, textiles, paper and other carbonaceous materials?
Class A
Class B
Class C
Class D
What is a polar (liquid)?
A liquid that mixes with water
A liquid that doesn't mix with water
A liquid that emits flammable vapour
A liquid that conducts electricity
What is flashpoint of an oil or liquefied gas?
The flash point for an oil or liquefied gas is the temperature at which it is possible to ignite the vapour above the liquid
The flashpoint is the mixture of oxygen and hydro carbons needed to have an oil or liquefied gas to burn
The flashpoint is the temperature the oil or liquefied gas need for self ignition
The flashpoint is the temperature needed to have a oil or liquefied gas pumpable
What is the minimum necessary condition for the start and permanence of an oil fuel fire?
The temperature is equal to or over the flash point
The temperature is below the flash point
The temperature is above 250°C
The temperature is below 100°C
What is the name given to a devastating explosion that may occur when a rigid container containing a liquefied gas is exposed to a very high *temperature?
BLEVE
SLOP-OVER
FLASH-OVER
BOIL-OVER
What kind of fuel will originate a class A fire?
a solid (cardboard or wood…)
a liquid (gasoline or petrol…)
a gas, not under pressure
a gas, under pressure
What kind of process is a fire?
All the mentioned alternatives
It is a chemical process
It is a process characterised by an emission of heat, light and smoke
It is a physical process
Which element must be removed to extinguish a fire?
All alternatives. It is enough that one of the mentioned elements are removed.
Heat
Oxygen
Chain reaction
Which of the following is a combustion reaction?
All the answers are good
Smouldering fire
Open fire
Explosion
Which one of the following appliances is allowed to burn an oil fuel, the flash point of which may be a little bit lower than the one used for the main *engine?
The emergency generators
The inert gas generators
The incinerators
All the answers are wrong
Which one of the listed fire-extinguishing medium is most effective against an open oil fire?
Foam
Water
Powder
Gas
Could a lift be considered as an escape route from the engine room ?
NO
YES
Yes, if it is constructed with class A materials
It depends on the distance of the escape route
Generally speaking, what is the value commonly recognised as the maximum concentration of CO allowed in the breathing air of a breathing apparatus?
20ppm
40ppm
80ppm
100ppm
Generally speaking, what is the value commonly recognised as the maximum concentration of oil vapours allowed in the breathing air of a breathing apparatus?
5mg/m3
50mg/m3
500mg/m3
10mg/m3
Monoammonium phosphate used as a dry powder can be effective on which of the following type of fire?
Solid, liquids, and gases
liquid and gases
Metals
Solid, liquid, gases and metals
What is the minimum capacity of the portable tank of a portable foam applicator ?
1 litres
5 litres
10 litres
20 litres
What is the minimum volume of air contained in the cylinders of a SOLAS compliant self-contained compressed-air operated breathing apparatus (SCABA)?
1200 litres
1000 litres
1800 litres
2500 litres
What is the only reliable way of checking that the CO2 cartridge in a dry powder extinguisher is full?
Remove the cartridge and weigh it to check that it has the full weight stamped on it
Check if the seal on the extinguisher release handle is intact
Weigh the extinguisher and check that it complies with the weight marked on it
All of the alternatives are reliable methods
Which of the following hose lengths corresponds best to the most common ones found onboard?
20 m
30 m
10 m
5 m
Which of these series of sizes corresponds to the international standard for nozzles
12 mm, 16 mm and 19 mm
5 mm, 10 mm and 20mm
10mm, 20 mm and 30 mm
10 mm and 20 mm
Apart from red, what other colour is frequently used for a CO2 extinguisher?
Black
Light blue
Green
Yellow
Apart from red, what other colour is frequently used for a dry powder extinguisher?
Blue
Black
Green
Yellow
As a general rule, where would you expect to find a portable fire extinguisher in any space?
Near to the entrance to the space
There is no such standard practice.
Near the middle of the space
Under a porthole or window
Breathing apparatuses is an important piece of equipment for being able to fight a fire onboard a vessel. What routine precautions to be observed with regard to use and maintenance of such equipment?
All the mentioned alternatives.
That the equipment always to be kept cleaned,checked and bottles are recharged immediately upon use, and frequently inspected.
That personnel that are appointed as smoke divers, primarily are given a shore based proper basic education and training.
That personnel having a beard are not selected as smoke divers.
How do the extinguishing agents act?
by cooling, smothering, combustible suppression, inhibition
by cooling, smothering, dilution with water and/or ventilation
by inhibition
by ignition suppression
In general what is the proportion of concentrate to water to produce foam?
Between 3% and 6%
Between 50 and 100%
This operation is done automatically and in relation to the foam
over 100%
Proteinic foams have the feature of being?
Of low expansion, viscous and solid, easily contaminated by hydrocarbons
Of high expansion, made of tense-active compounds
Of high expansion, not easily contaminated by hydrocarbons
Of low expansion, not easily contaminated by hydrocarbons
The basic components of the self-contained breathing apparatus are…
Mask, bottle, frame, medium pressure valve and low pressure valve
Mask, bottle, frame
Mask, bottle, frame , safety valve
Mask, bottle, frame; low pressure valve
The effectiveness of CO2 as an extinguishing agent is based on:
Combustion suppression
Inhibition and combustion suppression
Cooling and inhibition
Dilution, cooling and inhibition
The effectiveness of foam is based on:
Smothering and cooling
Smothering and dispersion
Inhibition
Dilution
What are the components of the personal equipment of the fireman's outfit..
All the items mentioned
Protective clothing to protect the skin from heat, burns and scalding
Boots and gloves of rubber
A rigid helmet, an electric safety lamp and an axe
What are the main basic components of a portable extinguisher?
The container, the extinguishing agent, the impulsion system
The shooting nozzle, the seal, the safety valve
The seal, the pressure gauge, the extinguishing agent, the safety pin
The container, the hose, the safety pin
What are the three diameters of fire hoses most commonly found on ships?
25, 45, or 70 mm
10, 50 or 85 mm
17, 43 or 74 mm
50, 74 or 100 mm
What is the "international shore connection" used for?
To connect the ship fire main to the shore lines
To connect the cargo hoses to the shore
To connect the bunker hoses to the shore
To connect the ship fresh water hoses to the shore
What is the main advantage of a positive pressure breathing apparatus?
If the face mask has a leak toxic fumes/smoke would still not enter the mask
The positive pressure makes it easier to breathe when working hard
It ensures a constant supply of air
It is less complicated and cheaper than a breathing apparatus of the demand type
What is the main criterion generally taken into account to classify portable extinguishers:
The extinguishing agent
The way they can be moved
Their capacity of charge
Their pressurisation system
What is the most common fixed fire fighting extinguishing system fitted in an engine room?
A carbon dioxide (CO2) system
A chemical powder system
An halogenated hydrocarbon system
A pressure water-spraying system
What type of nozzles for fire hoses can be provided aboard ships?
Dual purpose (jet/spray) type incorporating a shutoff
Jet type only, incorporating a shutoff
Spray type only, incorporating a shutoff
All of the above types can be provided
What types of fire extinguishers shall be used in the engine room?
Fire extinguishers equipped for powder or CO2 only.
Fire extinguishers of the handy-size types only.
Fire extinguishers filled with fresh water only.
Any fire extinguisher with a weight of less than 100 lbs.
Where is the International Shore Connection to be stored?
Easy accessible by the gangway
In the engine room
In the accommodation
Together with the cargohoses
Which one of the following is a limitation on the use of chemical powders?
All the below mentioned alternatives
In some cases they may cause a violent reaction on combustible metals such as sodium
They may put an insulating deposit on electronic equipment
Some of them may give off NH3
Which one of the listed fire-extinguishing medium is most effective against an open oil fire?
Foam.
Water.
Powder.
Gas.
You are carrying out a search in a smoke filled compartment wearing a breathing apparatus. At what stage should you start to make your way out of the compartment?
Regularly check your pressure gauge and note how much air you used to reach your work area. Start to return when you have this amount left plus a reasonable reserve
Wait until the breathing apparatus warning whistle sounds.
15 minutes after starting to use the set as this leaves you with five minutes air left
Wait for the appropriate signal on your safety line as the personnel outside will be keeping a track of the time you have spent inside
A drip tray containing oil is on fire. The only fire fighting equipment available is water hose with spray jet/spray nozzle. How, if at all, should you attempt to put out this fire using water?
The water can be applied in a fine spray starting from the front in a sweeping motion.
Water should not be used on any type of oil fire.
Water should be applied to the oil in a single jet only.
Water should be applied in a jet to the back of the fire.
As a fire fighter, what should you always consider when fighting a fire in a confined space?
The confined space always has six sides
The confined space has only four sides
The confined space can be considered to have one side only as heat always rises
The confined space has only five sides
Before extinction of an electric fire we need
To disconnect the power source
To confine the area involved in the fire
To put out the fire without taking any special measures
To know the voltage and wear rubber gloves
Fuel oil from a leaking fuel pipe has been collected in a drip tray under the boiler furnace.The oil is suddenly ignited by a backflash from the boiler burner.The boiler room is manned and the person present has the choice of various extinguishers. The fire is purely a surface fire. What would be the preferable extinguisher?
Powder
CO2
Water
Any of the mentioned alternatives
If circumstances permit, how should low expansion foam be applied to oil burning near a bulkhead of the engine room?
The foam should be aimed at the bulkhead behind the fire and allowed to spread out slowly over the fire.
The applicator should be used in a sweeping motion to spread the foam over the surface.
The foam should be applied to the centre of the fire.
The foam should be aimed at about 45 degrees upwards so that it can drop onto the fire
In a liquid fire the surface of which is about 100m²...
Flames are usually higher than the diameter of the fire
the radiated heat can spread to exposures placed 100m away
the radiated heat can spread to exposures placed 200m away
the radiated heat is lower than the conducted heat
In a smoke filled alleyway where will the cleanest air be found, and how should you proceed out?
Near to the deck, crawl out keeping your face as near to the deck as possible.
It will be the same in all parts, therefore I would just leave as quickly as possible.
Sit and wait for the rescue party.
Towards the upper part, stand as tall as possible and walk out.
In case of a fire inside the Acetylene-line in the ac/ox gas welding equipment, what action is deemed necessary?
Close the valves on both the Acetylene and the Oxygen bottles.
Close valves on Acetylene bottle(s).
Close Acetylene valve in the workshop.
Close Oxygen valve.
In case of a fire on the line of an oxyacetylene gas-welding equipment, what action should be taken?
Close the valves on both bottles, first the acetylene and then the oxygen bottle
Close the valve(s) on the acetylene bottle only
Do not close any valve and attack the fire, preferably with powder
Close the valve(s) on the oxygen bottle only
In case of fire in the switch board, what kind of extinguisant to be preferred?
CO2
Powder
Water
Water spray
In order to extinguish a fire with a portable extinguisher, we must proceed in the following way:
Maintain a safe distance, apply the extinguishing agent to the base of the flames with the wind behind us
Maintain a safe distance, apply the extinguishing agent to the base of the flames facing the wind
Maintain a safe distance, apply the extinguishing agent to the top of the flames with the wind behind us
Maintain a safe distance, apply the extinguishing agent to the top of the flames facing the wind
In order to extinguish a flammable liquid of the same kind as alcohol, we can use:
Anti-alcohol foam
Water
Water and foam
Sprayed water
In the fire fighting of fires of a type C with dry chemical powder extinguishers, the application is performed...
in a continuous way so that the powder spray is in the same direction as the one of the flame
as soon as possible, to any point of the fire and in intermittent manner
across the flame, sweeping it
the chemical powder doesn't extinguish type C fires
The engine room is equipped with regular fire hoses and nozzles. What is important to observe when using water as an extinguisant in the engine room?
All the mentioned alternatives.
Water may short circuit electrical installation and may be a threat to the personnel operating the firehose as well as to electrical equipment itself.
Water has a clear limitation in fighting an oil fire.
To reduce the negative effect of water in an engine room, the spraying function to be used.The spray function will also give the personnel operating the fire hose good shelter against heat.
The main risk for people when using CO2 as an extinguishing agent in a closed space is:
Air suppression
Low temperature at the nozzle
Toxicity
Reduction of visibility
The presence of smoke represents one of the greatest dangers in the fire fighting. Why?
It reduces the visibility, provokes panic, is irritating and may be toxic
It hinders communications, causes burns, and provoke panics
It refrains the equipment from setting out the fire, and is irritating
It only reduces visibility and is very hot
The pressure in a flexible fire hose must be set up ...
After it has been laid down
Before it is being laid down
While it is being laid down
All answers are correct
What class of fire is a smouldering fire of wood, textiles, paper and other carbonaceous materials?
Class A
Class B
Class C
Class D
What is the absolutely main purpose with fighting a fire on board?
Rescuing of life
To put out the fire.
To limit the fire.
Try to put out the fire.
What kind of extinguishing-remedy would you choose to put out an electrical fire?
Dry extinguishing remedy.
Foam.Water
Combination of powder and water.
When fighting fire, why shall you never pour water into hot fat?
The water will explode into steam causing hot fat to be thrown far away thus possibly causing severe burns or fire.
The fat will stiffen immediately and need reheating.
The water will turn into steam and cause the fat to explode.
The fat will not be edible any more.
Which activity will have the greatest fire-fighting effect in case of a fire?
Extinguishing attempt is started immediately
All possible fire-fighting equipment is brought to the scene
All fire-fighting teams are organized as soon as possible
Call the Chief Officer
Which one of the listed fire-extinguishing medium is to be preferred to fight a fire in an electric installation (for example the main switchboard)?
Powder.
Water fog.
Sprinkler.
Foam.
Whilst in the Engine room you hear the CO2 release alarm, what action if any should you take.
Leave the engine room as quickly as possible, closing all doors behind you.
Proceed to the engine control room and call the bridge for further instructions.
Take no action as it is probably someone testing the system, as the fire alarm has not been sounded and the engine room is not on fire.
As CO2 can not kill you, secure present work and proceed out of engine room.
You are carrying out a search in a smoke filled room, wearing a breathing apparatus. How would you conduct this search?
Carry out a right or left hand search and proceed carefully, feeling the area in front with the foot and using the back of the free hand to check the area around..
As soon as you enter carry out a right or left hand search by placing the appropriate hand onto the bulkhead and then follow the bulkhead round as quickly as possible.
Proceed to the approximate centre of the room and then carry out the search on a circular pattern.
Proceed straight ahead to the far bulkhead and then carry out a left or right hand search as appropriate
You are leading a team fighting an interior fire. If you see the colour of the smoke changing from dark black to grey, what is the most probable reason for that change?
the team is applying water and the temperature is decreasing
the temperature inside is increasing
the team has started to ventilate
the percentage of oxygen is getting below 15%
