Heim Online-Tests CES Gas tanker Deck Support Test online CES 5.1 for Deck department, Support level, Gas tanker vessel

Online-Test: Test online CES 5.1 for Deck department, Support level, Gas tanker vessel

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Frage 1 aus 90

A polarisation of a radio wave is determined by:

Length of the aerial

Condition of the aerial

Height of the aerial

Position of the aerial

When a satellite receives a “distress alert” from a Cospas-Sarsat EPIRB, the relay of the “distress alert” can be delayed because the satellite cannot immediately contact a:

LES before the satellite is actually seen by this ground station

Don't know

LUT before the satellite is actually seen by this ground station

NCS before the satellite is actually seen by this ground station

What should be applicable to tank cleaning operations by means of circulation products with low flash products (below 60° C) ?

It can be done without problems.

It can be done on stainless steel tanks only and if the tank cleaning hoses are grounded.

It can be done if the tankcleaning hoses are grounded.

It should be avoided, unless the tank atmosphere is inerted.

You are on a vessel 10 nautical miles off the coast of Algerie, in the Mediterranean Sea. Are you allowed to dump food waste overboard?

Yes, all kind of food waste can be dumped overboard

Yes, the food waste can be dumped if it is ground so that the resulting particles can pass through a screen with 50 mm openings

No, food waste can not be dumped overboard

Yes, the food waste can be dumped if it is ground so that the resulting particles can pass through a screen with 25 mm openings

Rule 12 of the International Collision Regulations prescribes the action to be taken by a sailing vessel when meeting another sailing vessel. This depends on the direction of the wind relative to each vessel. In the situation shown here, which sailing vessel (A or B) must keep out of the way of the other?

Sailing vessel B must keep out of the way of sailing vessel A.

Sailing vessel A must keep out of the way of sailing vessel B.

The upwind sailing vessel must keep out of the way of the downwind sailing vessel.

Both sailing vessels are required to take avoiding action.

Which of the alternative methods of using a tug when escorting your ship through narrow waters do you think is the most effective if you lose steering power?

The tug-s bow against my stern, made fast with lines. By moving the tug to either side of my stern, this will help to steer the ship (figure 4).

Running free alongside, ready to be made fast (figure 2)

Made fast forward on either shoulder, ready to push (figure 3)

Made fast in a line at the bow (figure 1)

What do you understand by the term ‘Terminal Representative’?

A cargo facility terminal agent

A person appointed by a cargo terminal for matters related to crew welfare under the International Labour Convention

A person appointed by a cargo terminal for operations conducted by that terminal with regard to a ship

A bulk cargo terminal agent

Indicate the correct name for the tool on the sketch:

Grinding machine

Flat file

Chisel

Pliers

To conform with "best practise", can you drive a crane and stand-by for a colleague who has entered a cargo tank at the same time?

Yes.

Normally no, but if we are in a hurry to get lots of jobs done before entering port and the Chief Mate know about it, then it is alright to do so.

No.

Yes, if I have radio contact with the man inside the tank.

If a vessel is rolling heavily in a seaway and has negative GM and a small Angle of Loll, describe how the vessel will roll.

Roll unevenly flopping over between the Angle of Loll on each side.

Roll evenly either side of the upright position.

Roll evenly each side of the Angle of Loll.

Roll between the Angle of Loll on each side.

A bulk cargo is loaded and the cargo stow has been left with an excessive peak height; what could be the result of this situation?

Excessive stresses on transverse bulkheads

Excessive stresses on tank top

Excessive cargo sweat

Damage to hatch covers

In discussing the characteristics of an oil cargo, what is the "cloud point"?

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 depth within a cargo above which no waxy solids are entrained.

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 surface pressure at which vapours from an oil cargo overcome gravity and friction and are expelled from the containing compartment.

What does the Chief Officer want the 1st Engineer to do?

The Chief Officer wants to speak to the 1st Engineer

The Chief Officer wants the 1st Engineer to empty side tank No. 2

The Chief Officer wants the 1st Engineer to put the hydraulic hand pump in bilge No. 5

The Chief Officer wants the 1st Engineer to empty the starboard bilge in hold No. 5

How should the initial draught survey report form be signed?

Adjacent to the column for the final draught survey

Adjacent to the initial draught survey figure remarked ‘for initial draught survey only'

Between the two columns for the initial and final draught surveys remarked ‘for initial draught survey only'

Adjacent to the initial draught survey figure

What is the safe time for operating the crankcase door when oil mist alarm is activated and the engine has been stopped?

After 20 minutes

After 1 minute

After 10 minutes

After 5 minutes

Where is the acceptable location to smoke while on duty, or working in a cargo deck stowed with containers?

The designated smoking area inside the accommodation or on deck?

Smoke close to an entrance to the cargo deck?

Carefully smoke outside the container stowage area?

There is no smoking allowed while on duty?

When work must be done on High Voltage equipment, it is vital that the equipment is earthed (grounded) after isolation procedures have been carried out. Why is this?

To provide a reference point, and so ensure accuracy of any test results.

To ensure that the equipment does not overheat due to currents circulating through earth (ground).

To ensure that no energy remains in the system and that it cannot be recharged by external influences.

To ensure that it is dead, even if there was a flaw in the isolation procedure.

What is the purpose of refractory linings in an oil fired steam boiler furnace?

To support the steam drum.

To ignite the burner during automatic operation.

To prevent excessive furnace heat losses and protect tubes and other fittings from overheating.

To give added strength to the furnace.

After washing cargo holds why are cargo residues often found on the tank top when hatches are opened at the load port?

Because the washing of cargo holds was not thorough

Because of poor drainage into the bilges

Because of cargo residues falling down due to ship’s vibrations during the ballast passage

Due to failure of the bilge eductors

How many rescue boats should be provided on ro-ro passenger ships of 500 gross tons and above?

Two Fast Rescue Boats, one on each side of the ship

Two, and at least one of the rescue boats shall be a Fast Rescue Boat

None providing the ship has lifeboats

One Fast Rescue Boat

This circuit consists of two resistances, R1 = 6 ohm and R2 = 12 ohm , connected in series. Calculate the equivalent resistance R(S) .

R(S) =18 ohm

R(S) =1,5 ohm

R(S) = 72 ohm

R(S) = 4 ohm

Which of the following is a requirement on an oil tanker before entering any enclosded area containing inert gas generating equipment?

The oxygen level should be checked with an explosimeter

The atmosphere should be gas free and contain 20.9% oxygen

The atmosphere should contain at least 5% oxygen

The atmosphere should contain not more than 5% by volume of explosive and poisonous gases

An engine room rating notices that the guard on a running pump is hanging loose due to a missing bolt on the support bracket and it is catching the shaft coupling. What is the best action to take as a repair method?

Place a sheet of metal in front of the guard to deflect any parts that may fly off as a temporary repair.

Inform the watchkeeper so that the pump can be stopped and a new bolt can be fitted to permanently fix the guard in place.

Try and fit a new bolt while the pump is running to permanently fix the guard in place.

Fasten the guard back in place with a piece of rope with the pump running as a temporary repair.

When describing equipment used in oil tanker operations, what does the abbreviation "VECS" stand for?

Vapour Emission Control System.

Vapour Emission Calibration System.

Vapour Ejection Control System.

Vapour Emission Control Standard.

Is there any requirements regarding crew’s language skills?

All crew working directly with passengers must be able to communicate on the language spoken by the majority of the passenger.

Yes, all crew must be able to communicate on the language spoken by the majority of the passengers, or demands set by the company.

All crew working directly with passengers must be able to communicate on the language spoken by the majority of the passenger and english.

All crew must be able to speak english

When securing a non-standardized portable tank on a RoRo vessel, what is a favourable securing angle that will prevent it from transverse sliding?

15 to 18 degrees

18 to 23 degrees

30 to 33 degrees

23 to 30 degrees

In a closed loop control system the error signal is derived from which of the following?

The tolerance of the feedback sensor

The process and the feeedback sensor

The demand and the feedback signal

The process and the demand

What is the relationship between absolute and gauge pressure?

Absolute pressure = gauge pressure + barometric pressure.

Gauge pressure = barometric pressure / atmospheric pressure

Absolute pressure = gauge pressure x 0.947 barometric pressure.

Gauge pressure = absolute pressure + barometric pressure.

You are alongside, loading several grades of chemicals, some with an explosion and flammability hazard. It is late evening. Whilst moving some equipment with the manifold crane, you accidently hit one of the deck flood-lights, smashing the glass cover and the light bulb inside. What will you do?

Replace the light bulb with one taken from another area. Temporarily tape back the pieces of the cover, making as good a seal as possible, without losing too much of the light. Inform the Duty Officer at the end of the watch.

Say nothing. Inform the Electrician in the morning.

Report the accident to the Duty Officer immediately. Switch off the power to the light concerned. Place an isolation notice over the switch to prevent anyone else operating the switch. Advise your relief at the end of the watch.

Go and find a portable light with a cable. Rig and secure it as close as possible to the damaged flood-light. Inform the Electrician when you next see him.

When refitting the bolts into a flange on a steam line how should the bolts be prepared so that they can be easily removed next time maintenance is required?

Coat the threads in graphite based grease.

Fit the bolts dry with a spring washer.

Apply thread tape to the bolt threads.

Coat the threads in general purpose grease.

This circuit consists of a voltage source V, a change-over switch S, a resistor R and an inductor L. The voltage/time figures 1 to 4 show possible changes in the voltage V(L) in case the switch S is suddenly shifted from position 1 to 2 at time t = 0. Only one of the diagrams is correct. Which?

Figure 4

Figure 2

Figure 3

Figure 1

Where would you look for a summary of the important safety and handling information on a particular chemical cargo loaded on your ship?

The IBC Code.

The Master's Standing Orders.

The Company Cargo Handling Manual.

The Material Safety Data Sheet.

Every oil tanker of 5,000 tonnes deadweight and above delivered on or after 1 February 2002 shall comply with intact stability. What is the minimum GM (metacentric height) when the vessel is in port?

Not less than 0.015 m

Not less than 0.25 m

Not less than 0.10 m

Not less than 0.15 m

What claims could arise against the vessel at the discharge port for steel reinforcing rods loaded in open-top containers?

Container damages

Physical damages to the cargo

Cargo shortage

Cargo staining by rust, hydraulic oil or grease

What name is given to the short, intial wash given to tanks that have just contained certain particularly hazxardous cargoes before the ship leaves the unloading port and where the washings are landed to shore or to a slop barge?

A mandatory customer post discharge wash.

A confirmation cycle.

A SOLAS pre-flush.

A MARPOL pre-wash.

For what can a vessel be held responsible by a port authority?

The gangway resting on a damaged jetty

Damage to cargo during loading

Painting overside

Soot emissions

With two alternators running in parallel, you wish to disconnect one. The first step is to:

Make sure the load is evenly shared

Trip the main circuit breaker

Remove the load from the alternator to be stopped

Increase the frequency on the switchboard

You are proceeding along a coastal route when you hear this signal. The visibility is severely restricted. What does the signal mean?

There is a vessel at anchor in the vicinity. She is more than 100 metres in length. She is sounding an additional warning signal to approaching vessels, directing them to "keep clear".

There is a vessel at anchor in the vicinity. She is less than 100 metres in length. She is sounding an additional warning to approaching vessels that they are "running into danger".

There is a vessel aground in the vicinity. She is more than 100 metres in length. She is sounding an additional warning to approaching vessels that they are "running into danger".

There is a vessel aground in the vicinity. She is less than 100 metres in length. She is sounding an additional warning to approaching vessels to "navigate with extreme caution".

Under international regulations where must entries be made with regard to the disposal of bulk cargo residues into the sea?

In the Garbage record book

In the Official log book

In the Deck log book

In the Cargo record book

What is another term for ‘Cargo Sweepings’?

Cargo hold debris

Waste

Marine Pollutants

Dry cargo residues

What do you understand by: Let go the port anchor?

Let go the port anchor means: slacken the port anchor cable

Let go the port anchor means: put the port windlass brake in gear

Let go the port anchor means: open the port windlass brake

Let go the port anchor means: put the port windlass brake in gear and lower the anchor

With reference to non-VIT diesel engine high pressure fuel pumps that have helix control, how is the timing of fuel injection normally adjusted?

By raising or lowering the pump plunger relative to the pump barrel.

By rotating the pump plunger relative to the pump barrel.

By changing the governor output signal.

By changing the opening pressure setting for the fuel injection valves.

What are the disadvantages of large double bottom tanks on a double hull oil tanker?

The effect of free surface and reduction in the transverse metacentric height.

Suddenly developing a severe trim.

Potential hazards relating to damage to internal structure and pipelines.

Increased longitudinal bending moments.

What is the purpose of an automatic trip system onboard, and how does this function?

Automatic trip is to avoid tanks being cooled too much, the trip function is often initialised by a float switch or a temperature switch.

Automatic trip is to avoid vacuum to be generated in cargo tanks.

Automatic trip is to avoid over pressurising in cargo tanks and other pressurised vessels, the trip function is often initialised by a float switch.

Automatic trip is to avoid tanks and pressurised vessels becoming overloaded, the trip function is often initialised by a float switch.

The instrument air system is suffering from excess water carry over to the instrument air lines. The air intake to the compressor has very high humidity. Which of the actions given in the options will most likely result in reducing this problem?

Use an additional coalescer filter in the inlet to the instrument air filter system.

Shorten the time between automatic receiver drain blow downs.

Reduce the superheat setting on the instrument air refrigeration/dryer unit.

Increase the cooling water flow through the compressor intercooler and aftercooler.

Why are pure RoRo car carriers considered as being high risk design vessels where their stability is concerned.

Because they have few internal bulkheads

Because of the relatively small clearance between waterline and stern ramp sill when fully loaded

Because they can easily capsize if there is ingress of water or ballast operations are not handled correctly

What would indicate wastage to the main shaft of a ‘D’ ring?

Corrosion around the welded seam to the deck

Corrosion of the welded seam to the deck

Corrosion of its retaining sleeve

Pitting of the ‘D’ ring

What danger is associated with damaged expanded metal gratings on loading ramps?

Vehicles’ windscreens may be damaged during cargo operations

The front and/or rear ends of vehicles may be damaged during cargo operations

Vehicles’ tyres may be damaged during cargo operations

The load density of the ramp will be affected

When you are calibrating an instrument what is the most common first step in the procedure (consult the manual)

Adjustment of Zero-point and span

Adjustment of span

Adjustment of range

Adjustment of linearity

Conventional reefer vessels are usually designed with fine lines and large flared bows. Consequently, in adverse weather conditions, especially from forward of the beam, the navigating officers need to be mainly aware of which of the given options?

This type of vessel is prone to large hull deflections which may result in structural damage.

That the main engine governor may not be effective when the vessel pitches heavily.

That the bow is ideal for keeping the forward decks dry and clear of water.

That the vessel design means that high speeds can be maintained and the perishable cargo can be delivered in good condition.

Fluid flow is measured using a pneumatic differential pressure transmitter and is indicated on a direct reading instrument. The indicator is reading zero even though fluid is flowing through the system. When the flow rate changes the indicator initially registers a reading but then gradually returns to zero. From the options given select the probable cause of this condition.

The connection to the differential pressure transmitter low pressure bellows is blocked.

Diaphragm in the differential pressure transmitter is perforated.

The I/P converter is faulted.

The connection to the differential pressure transmitter high pressure bellows is blocked.

Medium and high speed diesel engines used for marine propulsion normally require a reduction gearbox to be fitted in order to achieve suitable output speeds for the propeller. What device is normally required in the drive arrangement in order to avoid damage to the gearing due the torque variations of the diesel engine output?

A flywheel.

A moment compensator.

A flexible coupling.

A mechanical friction clutch.

What name is given to the process on an oil tanker, when inert gas is being blown into a cargo tank, to reduce the level of oxygen it contains?

Blowing.

Purging.

Venting.

Gas-freeing.

What is an IED?

An explosive

A homemade bomb

A type of gun

An incendiary device

You are going to inspect a fresh water tank together with one of the Engineers. Is it safe enough to open the manhole and enter the tank (it is only fresh water) or do you have to take extra precautions before entering?

Make sure that the tank/ enclosed space is gas free, ventilated and the oxygen content is measured. O2 content shall be 21% before entering the tank/ enclosed space

Bring a flashlight and put on safety shoes

Use a breathing apparatus if the oxygen level is below 21%

Remember to have a colleague standing by to assist you if any problems

Many conventional reefer vessels are built with wooden gratings that support the cargo above the steel deck of the vessel. These gratings are typically carried on 50mm x 100mm wooden bearers. From the options given, select the most important consideration in relation to these wooden bearers.

The bearers must all be placed running in the same direction in the hatch.

Only wood of the quality of the existing bearers should be used.

The bearers should, as far as practicable, be placed clear of the vent holes in the gratings.

Only knot free, straight wood should be used.

In order to speak clearly and effectively you should:

gesture with your arms

stand tall with shoulders squared

never open your mouth too wide

open your mouth, pronounce your consonants, and shape your sounds well

Hydrogen sulphide is a component associated with crude oil cargoes. At which of the following concentrations will dizziness, headache, nausea, etc occur within 15 minutes, followed by loss of consciousness and possibly death, after 30-60 minutes exposure?

50-70 ppm.

1,000 - 2,000 ppm.

200-300 ppm.

500-700 ppm.

With reference to diesel engine ancillary system operation, which one of the given statements is true?

The normal jacket water temperature before the jacket water cooler is approximately 80 to 90 C.

The normal temperature of the lubricating oil before the lub oil cooler is approximately 80 to 90 C.

The normal scavenge air temperature after the charge air cooler is approximately 80 to 90 C.

The normal temperature of heavy fuel oil after the fuel oil heater is approximately 80 to 90 C.

When should the Second Officer call the Master?

The Second Officer should call the Master whenever he sights more than three ships

The Second Officer should call the Master just before breakfast

The Second Officer should call the Master thirty minutes prior to the vessel's arrival at the pilot station

The Second Officer should call the Master whenever anything unusual happens during his watch or whever he is in doubt, regarding the COLREGs

A new joint is required for a sea water pipe flange and there are no ready made spares. What is the best method for making a new joint from a sheet of rubber insertion?

Use the old joint as a template to mark out the new joint on the sheet of rubber insertion and cut out the joint with scissors.

Cut a piece of rubber insertion with a hole in the middle roughly to size and fit it between the flanges. Hammer the bolts through to get the bolt holes in the correct position.

Measure the flange diameter, PCD and bore using a ruler and callipers and then use jointing scissors and hole punches to form the new joint.

Cut a piece of rubber insertion from the sheet and use a hammer to knock out the holes for the bolts and the bore against the flange.

When starting up an aerobic type sewage unit for the first time, or after manual cleaning, how should the bacterial process be initiated?

By shutting off the air flow.

By bypassing the grey water inflow and operating only with black water.

By filling the unit with sewage and bubbling air through it for 48 hours prior to starting the discharge pump.

By adding an activating agent to the inflowing sewage.

During the cycle of a four stroke diesel engine there is a load reversal on the bottom end bearing when the load transfers from the upper part of the bearing to the lower part. What is the main cause of this load reversal on a modern, turbocharged, medium speed diesel engine?

The light alloy materials used for the piston skirt.

The lack of gas load to oppose the inertial forces generated during the exhaust stroke.

The inertial forces generated during the upward strokes of the piston (compression and exhaust strokes).

The suction effect on the piston during the air intake (induction) stroke.

What is the typical size of a LNG carrier?

12,000 - 50,000

200,000 - 250,000

75,000 - 80,000

125,000 - 145,000 cbm.

Why should all bulk cargoes be trimmed and levelled on completion of loading?

To assist in the discharge

To prevent flammable gasses being generated

To reduce the possibilities of the cargo shifting at sea

To reduce the risk of cargo damage on passage

What is most important for visual search purposes?

Use of standard search pattern

Design of special search pattern

Start a search immediately

Design of individual search pattern

What makes a container vessel's cargo holds effective in containing under-deck fires?

Intact cell guides

A fixed fire-fighting system

Intact hatch and ventilator seals

An effective bilge pumping systems

What does this flag mean?

My vessel is stopped and making no way through the water.

Yes (affirmative).

I wish to communicate with you.

I have a diver down; keep well clear at slow speed.

Chemical boiling out is one method that is used for cleaning the waterside of a steam boiler. Select from the given options the likely circumstances under which this procedure would be considered necessary?

Contamination of the boiler water by oil.

Excess chloride levels in the boiler water.

Excessive sludge build up in the water drum.

Oxygen pitting in the steam drum.

Why is grain bundled?

To prevent it from wetting

To prevent bulk grain from shifting

To aid stability

To compact the cargo

The fire integrity of any bulkhead shall be maintained

At the openings and penetrations

Only at the continuous/solid part of the bulkhead

Don't know

Up to 5 meters above the deck level

What are safety cones used for on a RoRo vessel,?

Guiding vehicles while parking on board

Guiding vehicles onto and off the loading ramp

All of the alternatives

When will a hatch pontoon’s side cleat need replacement?

When the cleat retainer is rusty

When the rubber washer is compressed and hardened

When the cleat retainer is distorted

When the cleat has sprung open at sea

Which of the listed sensors is suitable for physial displacement?

Pt 500

Thermocouple

Thermistor

Strain gauge

What action should be taken by a rating on watch if steam is heard to be escaping from the area of the bottom water header handhole doors? The boiler is a high pressure boiler generating superheated steam.

Use the hand to have a feel around the area to try and locate the exact position of the leak.

Check the area where it is thought the leak may be using a cloth on the end of a broom handle.

Pass the information that there is a leak to the relief at the end of the watch.

Immediately inform the Officer of the Watch.

Why should cargo residues be removed from bilge wells?

Because corrosion will occur

Because bilge sounding pipes could become blocked

Because moisture levels will increase in the cargo holds

Because other cargoes will be contaminated

Some new maintenance routines are being planned and a risk assessment is necessary so that the required procedures can be entered into the ship's Safety Management manual. Which of the following should be the first step in this risk assessment process?

Identify the safety precautions that may be necessary to prevent injury or harm to personnel carrying out the routines.

Identify who may be harmed or injured in carrying out the maintenance routines.

Identify the hazards that may exist which may affect personnel involved with the maintenance routines.

Identify how much it will cost to implement the necessary precautions to prevent injury to personnel.

Ship Security Plans all look the same.

FALSE

TRUE

For what could a ro-ro vessel be held responsible by a port authority?

Vehicle emissions

Stevedore damages to vehicles

Ramp damage to the jetty

Visitors not wearing appropriate identification

Which plan should be consulted if it is found that two separate tanks are filling when it was intended for only one to be filled?

Lines Plan

Capacity Plan

Pumping plan

General Arrangement Plan

What is the meaning of the abbreviation PCB

Positive Colour Board

Printed Circuit Board

Power Control Bridge

Positive Current Biased

What do we call the heat given to or given up from a substance?

The heat given to or given up from a substance is called heat energy

The heat given to or given up from a substance is called change heat

The heat given to or given up from a substance is called latent heat

The heat given to or given up from a substance is called fusion heat

The oils used for medium and high speed diesel engine lubrication usually have alkaline additives which give the oil a Total Base Number of about 30 to 40 mg KOH/g. Why is it necessary to have such a TBN for these oils?

To counteract the effects of fuel leaking into the crankcase.

To allow operation of the engine on a variety of fuel types.

To increase the load carrying capacity of the oil.

To neutralise the acids formed during combustion.

What can be the result of the combination of free surface and flat tank bottom in partially loaded tank with heavy weathe ballast?

Generation of wave energy.

High metacentric hight.

High vertical shear force.

Longitudial bending moment.

Is it possible to discharge a fully-refrigerated gas carrier if brake down on a discharge pump?

Fully-refrigerated gas carrier can be discharged by condensate the cargo to shore or another cargo tank or let it boil off

We can not discharge any gas carriers without pumps

Fully-refrigerated gas carrier can be discharged by pressurising the cargo tanks

Fully-refrigerated gas carrier can be discharged by using a spare discharge pump lowered down in the cargo tank

If something is broken or missing, what should the First Mate do?

He is to notify the Chief Officer

The First Mate is to get rid of the lifeboat

He is not to do anything

He is to replace or repair whatever is wrong

How do you find out your duties from the alarm instruction?

By entering the alarm instruction with your cabin number

Informed by the chief officer

The ship’s handbook

Given on the spot.

How would you know how many people a lifeboat is supposed to hold?

Ask one of the deck officers

No fixed number as it depends on the people-s size

The number of persons should be clearly stated on the outside of the boats bow.

Fill the boat up until no more space is left.

What kind of safety equipment must be worn during anchoring?

Boiler suit, working gloves.

Safety goggles.

Safety helmet, safety shoes.

All of the mentioned equipment.

Which of the following are frequent causes of fires in accommodation?

Covering of electric fires with blankets

1Smoking in bed. 2 Covering of electric fires with blankets. 3 Overloading electric plugs.

Overloading electric plugs

Smoking in bed

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