CSCS Tunnelling Mock Test

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Specialists Test

Tunnelling

1 / 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

Get one of the gang to build

Mirrors at shoulder or crane level

2 / 44

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

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

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

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

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

3 / 44

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

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

With a dosimeter

With a calibrated gas detector

They both have a distinctive bad egg smell

4 / 44

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

Building rings from a platform within a shaft

Landing concrete jacking-pipes in the pit bottom

Working as the signaller at the pit top

Working as the belt-person on a TBM

5 / 44

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

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

Evacuate the tunnel

Try to repair it

Report it to your supervisor

6 / 44

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

Grease

Paint

Mud

Air

7 / 44

How should communication equipment be powered?

Linked to the main tunnel power supply

Independent of the main tunnel power supply

Battery-powered

Linked to the 33 kVA power supply

8 / 44

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

Vibrating hand tools

Falling mined material

Noise

Sprayed concrete rebound

9 / 44

How would you know if the ventilation system stops working?

An audible alarm would sound

Your supervisor would inform you

You would be told at the daily start of shift briefing

You would be informed as part of your induction

10 / 44

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

It can be prevented if gloves are worn

It can be corrected by surgery

It causes irreversible damage

It can be partially cured with medication

11 / 44

How could hydrogen sulphide affect those working in a tunnel?

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

It can cause respiratory paralysis, stopping you from breathing

It can leave a yellow dust which can irritate the skin

It can cause a mist making it difficult to see

12 / 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

13 / 44

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

Safety harness

Disposable overalls

Respiratory protective equipment (RPE)

Eye protection

14 / 44

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

Shouting

Radio

Hand signals

Traffic lights

15 / 44

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

It is odourless

It causes skin irritation

It causes a yellow haze

A smell of rotten eggs

16 / 44

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

19%

20%

21%

18%

17 / 44

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

It is toxic

It causes skin irritation

It reduces oxygen in the atmosphere

It can cause temporary blindness

It is explosive

18 / 44

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

Locate the blockage

Release the pressure in the pipeline

Clean out section by section

Split the line

19 / 44

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

When vehicles are passing

For services such as cables

For storage of materials and equipment

When installing ventilation cassettes

20 / 44

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

45 minutes

15 minutes

30 minutes

60 minutes

21 / 44

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

Hazard lighting

Emergency lighting

Emergency pull cord or stop button

Seat belt

22 / 44

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

It must be within one minute's walking distance

It must be within three minutes' walking distance

It must be within two minutes' walking distance

It must be immediately available

23 / 44

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

70 m on straights; 25 m on curves

50 m on straights; 25 m on curves

60 m on straights; 30 m on curves

80 m on straights; 20 m on curves

24 / 44

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

Klaxon bell

CCTV in the cab

Signal or traffic lights

Telephone

Siren

25 / 44

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

Visitor Book

Clocking-on machine

Tally system

Signing-in-book

26 / 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

27 / 44

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

A supply of running water

A first aider

Sterile bandages

An eyewash station

28 / 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 by the supervisor

As defined by the Health and Safety Executive (HSE)

As many as is stated on the personnel carrier

As many as can fit into it

29 / 44

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

75 m

100 m

50 m

25 m

30 / 44

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

Hand-arm vibration syndrome

Arc eye

Inhalation of dust

Cement burns

31 / 44

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

15 m

20 m

5 m

10 m

32 / 44

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

Asphyxiation

Crash

Crush

Noise

33 / 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?

20 m

10 m

15 m

5 m

34 / 44

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

Two

Three

One

Four

35 / 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?

Immediately

When you have identified the direction of travel

Only when everyone else starts to move

Only when you can see it

36 / 44

What is the colour of a 400-volt plug?

Yellow

Red

Blue

Black

37 / 44

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

Decompression, combustion incident

Dizzy, confused, induced state

Decompression incident

Decompression illness

38 / 44

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

Overloading

Water leak

Power loss

Oil spillage

Overheating

39 / 44

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

Diesel-powered equipment

Tunnel-boring machines (TBMs)

Rail-mounted plant

Electro-hydraulic spray pumps

40 / 44

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

Text message

Tannoy system

Telephone

Two-way radio

41 / 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 allow personnel to talk while being transported

To stop personnel sitting close together

To prevent derailment of the personnel carrying car

To minimise injury in the event of a derailment

To prevent personnel leaning out or falling out

42 / 44

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

Blowout at injection point

Hand-arm vibration

Falls from height

Shrinking grout hose

43 / 44

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

Provide ventilation systems

Have a portable breathing set nearby

Provide air monitoring

Avoid exposure

44 / 44

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

The crane operator

The rescue services

Environmental Health

The Health and Safety Executive (HSE)

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CSCS Tunnelling Mock Test – Be Prepared for Safe Underground Work

What is the CSCS Tunnelling Test?

The CSCS Tunnelling Specialist Test is a Health, Safety and Environment (HS&E) test designed specifically for those working in tunnelling or underground construction environments. It focuses on the unique risks associated with confined and subterranean spaces, helping workers stay safe below ground.