CSCS Tunnelling Mock Test

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Specialists Test

Tunnelling

1 / 44

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

Signing-in-book

Visitor Book

Tally system

Clocking-on machine

2 / 44

Why is it important to clean grouting pipelines after use?

It prevents the atmosphere from becoming explosive

It helps prevent the pipes from becoming weakened

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

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

3 / 44

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

Telephone

Tannoy system

Text message

Two-way radio

4 / 44

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

Mud

Grease

Air

Paint

5 / 44

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

19%

18%

20%

21%

6 / 44

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

15 minutes

60 minutes

45 minutes

30 minutes

7 / 44

What is the colour of a 400-volt plug?

Yellow

Black

Blue

Red

8 / 44

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

Evacuate the tunnel

Try to repair it

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

Report it to your supervisor

9 / 44

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

A supply of running water

An eyewash station

A first aider

Sterile bandages

10 / 44

How should communication equipment be powered?

Independent of the main tunnel power supply

Battery-powered

Linked to the 33 kVA power supply

Linked to the main tunnel power supply

11 / 44

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

15 m

5 m

10 m

20 m

12 / 44

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

1.8 m

0.9 m

1.2 m

1.5 m

13 / 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 respiratory paralysis, stopping you from breathing

It can cause a mist making it difficult to see

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

14 / 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?

Use a signaller

Get one of the gang to build

Alternative control point

Mirrors at shoulder or crane level

15 / 44

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

It is odourless

It causes skin irritation

A smell of rotten eggs

It causes a yellow haze

16 / 44

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

It must be within two minutes' walking distance

It must be immediately available

It must be within one minute's walking distance

It must be within three minutes' walking distance

17 / 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

18 / 44

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

25 m

50 m

100 m

75 m

19 / 44

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

Inhalation of dust

Arc eye

Hand-arm vibration syndrome

Cement burns

20 / 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 calibrated gas detector

They both have a distinctive bad egg smell

With a dosimeter

21 / 44

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

Clean out section by section

Locate the blockage

Split the line

Release the pressure in the pipeline

22 / 44

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

Crash

Crush

Noise

Asphyxiation

23 / 44

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

Water leak

Overheating

Power loss

Oil spillage

Overloading

24 / 44

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

It causes skin irritation

It can cause temporary blindness

It is toxic

It reduces oxygen in the atmosphere

It is explosive

25 / 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

Immediately

When you have identified the direction of travel

Only when everyone else starts to move

26 / 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

27 / 44

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

Working as the belt-person on a TBM

Landing concrete jacking-pipes in the pit bottom

Building rings from a platform within a shaft

Working as the signaller at the pit top

28 / 44

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

Radio

Shouting

Traffic lights

Hand signals

29 / 44

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

Decompression, combustion incident

Dizzy, confused, induced state

Decompression illness

Decompression incident

30 / 44

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

Four

Three

Two

One

31 / 44

How would you know if the ventilation system stops working?

You would be informed as part of your induction

Your supervisor would inform you

An audible alarm would sound

You would be told at the daily start of shift briefing

32 / 44

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

Eye protection

Respiratory protective equipment (RPE)

Disposable overalls

Safety harness

33 / 44

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

Hand-arm vibration

Shrinking grout hose

Blowout at injection point

Falls from height

34 / 44

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

Have a portable breathing set nearby

Provide ventilation systems

Avoid exposure

Provide air monitoring

35 / 44

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

Signal or traffic lights

Klaxon bell

Telephone

Siren

CCTV in the cab

36 / 44

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

Vibrating hand tools

Sprayed concrete rebound

Noise

Falling mined material

37 / 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 prevent personnel leaning out or falling out

To prevent derailment of the personnel carrying car

To minimise injury in the event of a derailment

To stop personnel sitting close together

To allow personnel to talk while being transported

38 / 44

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

The crane operator

Environmental Health

The rescue services

The Health and Safety Executive (HSE)

39 / 44

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

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

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

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

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

40 / 44

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

60 m on straights; 30 m on curves

50 m on straights; 25 m on curves

80 m on straights; 20 m on curves

70 m on straights; 25 m on curves

41 / 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 can fit into it

As defined by the Health and Safety Executive (HSE)

As many as is stated on the personnel carrier

As many as is stated by the supervisor

42 / 44

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

It can be corrected by surgery

It can be prevented if gloves are worn

It can be partially cured with medication

It causes irreversible damage

43 / 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

44 / 44

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

Emergency lighting

Hazard lighting

Seat belt

Emergency pull cord or stop button

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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.