CSCS Tunnelling Mock Test

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Specialists Test

Tunnelling

1 / 44

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

Noise

Vibrating hand tools

Falling mined material

Sprayed concrete rebound

2 / 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)

Safety harness

Disposable overalls

Eye protection

3 / 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

Only when you can see it

Only when everyone else starts to move

When you have identified the direction of travel

4 / 44

How should communication equipment be powered?

Battery-powered

Independent of the main tunnel power supply

Linked to the 33 kVA power supply

Linked to the main tunnel power supply

5 / 44

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

50 m

75 m

25 m

100 m

6 / 44

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

Seat belt

Emergency pull cord or stop button

Emergency lighting

Hazard lighting

7 / 44

Why is it important to clean grouting pipelines after use?

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 prevents the atmosphere from becoming explosive

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

8 / 44

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

With a dosimeter

With a calibrated gas detector

They both have a distinctive bad egg smell

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

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 informed as part of your induction

You would be told at the daily start of shift briefing

10 / 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

11 / 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 can be partially cured with medication

It causes irreversible damage

12 / 44

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

50 m on straights; 25 m on curves

60 m on straights; 30 m on curves

80 m on straights; 20 m on curves

70 m on straights; 25 m on curves

13 / 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

Report it to your supervisor

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

14 / 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

15 / 44

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

Telephone

Two-way radio

Tannoy system

Text message

16 / 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

17 / 44

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

Air

Paint

Grease

Mud

18 / 44

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

It reduces oxygen in the atmosphere

It can cause temporary blindness

It causes skin irritation

It is toxic

It is explosive

19 / 44

What is the colour of a 400-volt plug?

Red

Black

Yellow

Blue

20 / 44

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

Landing concrete jacking-pipes in the pit bottom

Working as the belt-person on a TBM

Building rings from a platform within a shaft

Working as the signaller at the pit top

21 / 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?

15 m

5 m

20 m

10 m

22 / 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

23 / 44

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

Shouting

Hand signals

Radio

Traffic lights

24 / 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)

Electro-hydraulic spray pumps

Rail-mounted plant

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

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

1.2 m

1.5 m

0.9 m

1.8 m

27 / 44

How could hydrogen sulphide affect those working in a tunnel?

It can cause a mist making it difficult to see

It can cause respiratory paralysis, stopping you from breathing

It can leave a yellow dust which can irritate the skin

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

28 / 44

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

Overheating

Overloading

Power loss

Oil spillage

Water leak

29 / 44

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

Decompression illness

Dizzy, confused, induced state

Decompression, combustion incident

Decompression incident

30 / 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

Mirrors at shoulder or crane level

Alternative control point

Get one of the gang to build

31 / 44

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

21%

18%

19%

20%

32 / 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

33 / 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 allow personnel to talk while being transported

To minimise injury in the event of a derailment

To prevent derailment of the personnel carrying car

To stop personnel sitting close together

34 / 44

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

Three

Four

Two

One

35 / 44

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

15 m

20 m

10 m

5 m

36 / 44

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

Noise

Crash

Asphyxiation

Crush

37 / 44

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

It causes skin irritation

It causes a yellow haze

A smell of rotten eggs

It is odourless

38 / 44

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

An eyewash station

Sterile bandages

A supply of running water

A first aider

39 / 44

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

Inhalation of dust

Hand-arm vibration syndrome

Cement burns

Arc eye

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 immediately available

It must be within one minute's walking distance

41 / 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)

42 / 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

Split the line

Clean out section by section

43 / 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

44 / 44

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

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

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

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

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

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