CSCS Tunnelling Mock Test

0 votes, 0 avg

Specialists Test

Tunnelling

1 / 44

Which of the following characteristics is associated with hydrogen sulphide gas?

It causes a yellow haze

It is odourless

It causes skin irritation

A smell of rotten eggs

2 / 44

In the event of an emergency who will use the information displayed on a tally board?

Environmental Health

The crane operator

The Health and Safety Executive (HSE)

The rescue services

3 / 44

Inclined conveyors are fitted with anti-rollback devices to prevent the belt running backwards due to which two potential failures?

Overloading

Power loss

Water leak

Overheating

Oil spillage

4 / 44

How would you know if the ventilation system stops working?

Your supervisor would inform you

You would be informed as part of your induction

You would be told at the daily start of shift briefing

An audible alarm would sound

5 / 44

Which of the following is a common traffic light system used underground to control plant movement?

Red = stop, Amber = out bye, Green = in bye

Red = stop, Amber = in bye, Green = out bye

Red = in bye, Amber = stop, Green = out bye

Red = out bye, Amber = in bye, Green = stop

6 / 44

If oxygen levels are dropping, at what point would the atmosphere be classed as oxygen deficient?

21%

20%

19%

18%

7 / 44

Which one of the following is not a health risk associated with sprayed concrete linings?

Hand-arm vibration syndrome

Inhalation of dust

Cement burns

Arc eye

8 / 44

Exposure to nitrogen oxide (NO₂) gas can cause breathing problems. Which of the following should be the first control measure?

Avoid exposure

Provide ventilation systems

Have a portable breathing set nearby

Provide air monitoring

9 / 44

Oxygen cylinders should not be allowed to come into contact with which of the following substances?

Grease

Paint

Mud

Air

10 / 44

The tunnel-boring machine operator has restricted vision during the building process. Which of the following is the most effective way of overcoming this?

Alternative control point

Use a signaller

Mirrors at shoulder or crane level

Get one of the gang to build

11 / 44

Which of the following is a reliable way to detect carbon monoxide and methane gas?

They both have a distinctive bad egg smell

With a calibrated gas detector

With a dosimeter

With your eyes, as you can see the gases in the mist

12 / 44

What is the maximum recommended distance between emergency lighting in a tunnel?

100 m

50 m

75 m

25 m

13 / 44

If a personnel carrying cage is used to transport workers into and out of a shaft, how many people can be transported at any one time?

As many as is stated on the personnel carrier

As many as can fit into it

As many as is stated by the supervisor

As defined by the Health and Safety Executive (HSE)

14 / 44

For tunnelling operations what is the minimum number of escape routes or methods that must be maintained from a working shaft?

Four

Two

One

Three

15 / 44

Hot work activities are not permitted within what distance of a diesel-fuelling point?

10 m

20 m

5 m

15 m

16 / 44

A locomotive is entering the rear of the tunnel-boring machine. Which two electronic systems are recommended to assist in controlling its movements?

CCTV in the cab

Siren

Klaxon bell

Signal or traffic lights

Telephone

17 / 44

Which of the following statements is correct regarding hand-arm vibration syndrome (HAVS)?

It can be partially cured with medication

It can be corrected by surgery

It causes irreversible damage

It can be prevented if gloves are worn

18 / 44

How should communication equipment be powered?

Battery-powered

Linked to the main tunnel power supply

Linked to the 33 kVA power supply

Independent of the main tunnel power supply

19 / 44

Which of the following situations would require using a safety harness?

Landing concrete jacking-pipes in the pit bottom

Working as the signaller at the pit top

Building rings from a platform within a shaft

Working as the belt-person on a TBM

20 / 44

Which of the following must be fitted as a conveyor system safety device?

Hazard lighting

Emergency pull cord or stop button

Emergency lighting

Seat belt

21 / 44

Why is it important to clean grouting pipelines after use?

It prevents the atmosphere from becoming explosive

It keeps the dust level below the point at which respiratory protective equipment (RPE) is needed

It helps prevent the pipes from becoming weakened

It helps prevent blockages, which could cause the hose to burst

22 / 44

Which of the following personal protective equipment (PPE) is not normally required for robotic-sprayed concrete lining operations in tunnelling?

Safety harness

Respiratory protective equipment (RPE)

Disposable overalls

Eye protection

23 / 44

What term is used for the access and egress control system to tunnels?

Visitor Book

Clocking-on machine

Signing-in-book

Tally system

24 / 44

When charging lead-acid batteries, they produce an explosive gas. Smoking and other naked flames are not permitted within what distance of a battery-charging area?

10 m

5 m

15 m

20 m

25 / 44

A grout gun inserted into a segment grout hole may present which of the following hazards?

Falls from height

Hand-arm vibration

Shrinking grout hose

Blowout at injection point

26 / 44

Crash cages and side bars or sliding doors should be fitted to all personnel carrying cars used in the tunnel. Select two reasons why they are needed.

To stop personnel sitting close together

To minimise injury in the event of a derailment

To prevent derailment of the personnel carrying car

To prevent personnel leaning out or falling out

To allow personnel to talk while being transported

27 / 44

How could hydrogen sulphide affect those working in a tunnel?

It can leave a yellow dust which can irritate the skin

It can cause a mist making it difficult to see

It can cause respiratory paralysis, stopping you from breathing

It can make it noisier and therefore harder for you to hear

28 / 44

Methane gas does not have an odour. In what two ways can it be dangerous?

It is toxic

It reduces oxygen in the atmosphere

It is explosive

It can cause temporary blindness

It causes skin irritation

29 / 44

While walking through the tunnel you see a tear in the ventilation ducting. What should you do?

Try to repair it

Evacuate the tunnel

Check if it has got any bigger at the end of the shift

Report it to your supervisor

30 / 44

How often should safe refuge (hop-ups) be located along a tunnel?

70 m on straights; 25 m on curves

80 m on straights; 20 m on curves

60 m on straights; 30 m on curves

50 m on straights; 25 m on curves

31 / 44

As a minimum, how long must a fire watch be maintained after hot works have been completed?

15 minutes

30 minutes

60 minutes

45 minutes

32 / 44

What does the term DCI refer to in compressed air tunnelling?

Decompression incident

Decompression illness

Decompression, combustion incident

Dizzy, confused, induced state

33 / 44

Nitrogen oxide (NO₂₎gas can be present in tunnels. Which of these plant items causes the most nitrogen oxide to be generated?

Rail-mounted plant

Diesel-powered equipment

Electro-hydraulic spray pumps

Tunnel-boring machines (TBMs)

34 / 44

What must be available at batching plants to deal with cement or concrete splashes?

A first aider

Sterile bandages

An eyewash station

A supply of running water

35 / 44

What is the colour of a 400-volt plug?

Red

Blue

Black

Yellow

36 / 44

What is the minimum recommended height of a secure barrier used to prevent falls around an open shaft?

1.5 m

1.2 m

1.8 m

0.9 m

37 / 44

What is the likely hazard from moving plant or locomotives in a tunnel?

Crush

Crash

Noise

Asphyxiation

38 / 44

Which two methods are commonly used for communication between the tunnelling face and the surface?

Text message

Two-way radio

Tannoy system

Telephone

39 / 44

Which of the following is not a hazard associated with hand mining?

Sprayed concrete rebound

Vibrating hand tools

Falling mined material

Noise

40 / 44

When working underground how quickly should you be able to get to your self-rescue set?

It must be within three minutes' walking distance

It must be within two minutes' walking distance

It must be within one minute's walking distance

It must be immediately available

41 / 44

Which one of the following is the least effective method of controlling locomotive movements in the pit bottom?

Traffic lights

Shouting

Hand signals

Radio

42 / 44

If a locomotive or vehicle is approaching you in the tunnel, when should you make your way to a hop-up or safe refuge?

Only when you can see it

Only when everyone else starts to move

When you have identified the direction of travel

Immediately

43 / 44

What is the first action to be taken if there is a blockage in the grouting pipe?

Locate the blockage

Split the line

Release the pressure in the pipeline

Clean out section by section

44 / 44

When should a hop-up or refuge in the tunnel be used?

For storage of materials and equipment

When installing ventilation cassettes

For services such as cables

When vehicles are passing

Your score is

The average score is 83%

Exit

How was the test? Please Submit your Rating and give us a feedback!

Thank you for taking the time to complete a mock test on our website. We appreciate your effort and dedication.

We wish you the best of luck in your preparation and future exams. If you have any feedback or suggestions, please let us know.

Leave a Reply Cancel reply