CSCS Tunnelling Mock Test

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Specialists Test

Tunnelling

1 / 44

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

Split the line

Clean out section by section

Release the pressure in the pipeline

Locate the blockage

2 / 44

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

Decompression, combustion incident

Dizzy, confused, induced state

Decompression illness

Decompression incident

3 / 44

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

Sterile bandages

A supply of running water

An eyewash station

A first aider

4 / 44

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

It can be corrected by surgery

It can be partially cured with medication

It causes irreversible damage

It can be prevented if gloves are worn

5 / 44

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

The rescue services

The crane operator

The Health and Safety Executive (HSE)

Environmental Health

6 / 44

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

Four

Three

One

Two

7 / 44

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

Arc eye

Cement burns

Inhalation of dust

Hand-arm vibration syndrome

8 / 44

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

Visitor Book

Clocking-on machine

Tally system

Signing-in-book

9 / 44

How would you know if the ventilation system stops working?

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

An audible alarm would sound

10 / 44

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

With a calibrated gas detector

With a dosimeter

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

They both have a distinctive bad egg smell

11 / 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 prevent derailment of the personnel carrying car

To prevent personnel leaning out or falling out

To minimise injury in the event of a derailment

To allow personnel to talk while being transported

12 / 44

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

Emergency pull cord or stop button

Seat belt

Hazard lighting

Emergency lighting

13 / 44

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

10 m

5 m

15 m

20 m

14 / 44

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

Noise

Sprayed concrete rebound

Vibrating hand tools

Falling mined material

15 / 44

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

50 m

75 m

100 m

25 m

16 / 44

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

30 minutes

15 minutes

60 minutes

45 minutes

17 / 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

Telephone

Siren

Signal or traffic lights

CCTV in the cab

18 / 44

What is the colour of a 400-volt plug?

Blue

Black

Red

Yellow

19 / 44

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

Hand-arm vibration

Blowout at injection point

Shrinking grout hose

Falls from height

20 / 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

21 / 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

0.9 m

1.8 m

22 / 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

When you have identified the direction of travel

Immediately

Only when everyone else starts to move

23 / 44

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

Respiratory protective equipment (RPE)

Eye protection

Safety harness

Disposable overalls

24 / 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

Tunnel-boring machines (TBMs)

Electro-hydraulic spray pumps

25 / 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?

Get one of the gang to build

Mirrors at shoulder or crane level

Use a signaller

Alternative control point

26 / 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 belt-person on a TBM

Working as the signaller at the pit top

27 / 44

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

70 m on straights; 25 m on curves

60 m on straights; 30 m on curves

80 m on straights; 20 m on curves

50 m on straights; 25 m on curves

28 / 44

How should communication equipment be powered?

Linked to the main tunnel power supply

Battery-powered

Linked to the 33 kVA power supply

Independent of the main tunnel power supply

29 / 44

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

Power loss

Oil spillage

Overloading

Overheating

Water leak

30 / 44

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

When installing ventilation cassettes

When vehicles are passing

For services such as cables

For storage of materials and equipment

31 / 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 defined by the Health and Safety Executive (HSE)

As many as can fit into it

As many as is stated by the supervisor

As many as is stated on the personnel carrier

32 / 44

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

Mud

Air

Grease

Paint

33 / 44

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

It can cause temporary blindness

It causes skin irritation

It is explosive

It is toxic

It reduces oxygen in the atmosphere

34 / 44

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

18%

21%

20%

19%

35 / 44

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

Tannoy system

Text message

Two-way radio

Telephone

36 / 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 = in bye, Green = out bye

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

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

37 / 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 immediately available

It must be within one minute's walking distance

It must be within two minutes' walking distance

38 / 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 air monitoring

Provide ventilation systems

Avoid exposure

39 / 44

Why is it important to clean grouting pipelines after use?

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

It prevents the atmosphere from becoming explosive

It helps prevent the pipes from becoming weakened

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

40 / 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

41 / 44

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

It causes a yellow haze

It is odourless

A smell of rotten eggs

It causes skin irritation

42 / 44

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

Hand signals

Radio

Traffic lights

Shouting

43 / 44

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

Report it to your supervisor

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

Try to repair it

Evacuate the tunnel

44 / 44

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

Asphyxiation

Noise

Crash

Crush

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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.