CSCS Services Mock Test

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Specialists Test

HVACR - Services and Facilities Maintenance

1 / 46

Which of the following should you not do when replacing the filters in an air-conditioning system?

Put the old filters in a dustbin

Wear appropriate overalls

Wear a respirator

Follow a job-specific risk assessment and method statement

2 / 46

When removing some panelling, you see a section of cabling with the wires showing. What should you do?

Wrap the defective cable with approved electrical insulation tape

Carry on with your work, trying your best to avoid the cables

Touch the cables to see if they are live, and if so refuse to carry out the work

Only work when the cable has been isolated or repaired by a competent person

3 / 46

Before working on electrically powered equipment, what is the procedure to make sure that the supply is dead before work starts?

Switch off and remove the fuses

Switch off and cut through the supply with insulated pliers

Test the circuit, switch off and isolate the supply at the mains board

Switch off, isolate the supply at the mains board, lock out and tag

4 / 46

Who should be informed if a legionella outbreak is suspected?

The Health and Safety Executive (HSE)

A coroner

The nearest hospital

The police

5 / 46

What is required before a pressure system can be operated?

A written scheme of examination

Operative certification

A hot-work permit

A minimum of two competent persons to operate the system

6 / 46

If you spill some oil on the floor and you do not have any absorbent material to clean the area, what should you do?

Keep people out of the area and inform your supervisor

Warn other people as they tread through it

Spread it about to lessen the depth

Do nothing, as it will eventually soak into the floor

7 / 46

While working on your own and tracing pipework in a building, you notice that the pipes enter a service duct. What should you do?

Go into the service duct and continue to trace the pipework

Ask someone in the building to act as your second person

Put on your personal protective equipment (PPE) and carry on with the job

Stop work until a risk assessment has been carried out

8 / 46

When should the use of a permit to work be considered?

At the beginning of each shift

For all high-risk work activities

For all equipment isolations

When there is enough time to complete the paperwork

9 / 46

When positioning and erecting a stepladder, which of the following is essential for its safe use?

It has a tool tray towards the top of the steps

You will be able to reach the job by standing on the top step

The restraint mechanism is spread to its full extent

Your supervisor has positioned and erected the steps

10 / 46

Which of the following is the most likely place to find legionella?

In drinking water

In infrequently used shower heads

In hot water taps above 50°C

In a river

11 / 46

Which two of the following should a person who is going to work alone carry out to ensure their safety?

Only work outside of normal working hours

Make sure that somebody regularly checks that they are OK

Notify the site manager of the details of the work

Ensure their timesheet is accurate and countersigned

12 / 46

What colour power outlet on a portable generator would supply 230-volts?

Black

Red

Blue

Yellow

13 / 46

When assembling a mobile access tower what major hazard must you be aware of?

Cable trays

Overhead service cables

False ceilings

Water pipes

14 / 46

What are the two main safety considerations when using oxyacetylene equipment in a confined space?

The risk of a flammable gas leak

The hoses may not be long enough

The burner will be hard to light

Wearing the correct goggles

Unburnt oxygen may cause an oxygen-enriched atmosphere

15 / 46

What would you use to find out whether a wall into which you are about to drill contains an electric supply?

A multimeter

A neon screwdriver

A hammer and chisel

A cable tracer

16 / 46

What is the first thing you should do after getting on to the platform of a correctly erected mobile tower?

Make sure that the tower does not rock or wobble

Check that the brakes are locked on

Check for overhead power lines

Close the access hatch to prevent falls of personnel, tools or equipment

17 / 46

What should you do if, when carrying out a particular task, the correct tool is not available?

Use the best tool available in the toolkit

Modify one of the tools you have

Wait until you have the appropriate tool for the task

Borrow a tool from the building caretaker

18 / 46

After servicing a gas boiler, what checks must you make by law?

Check for flueing, ventilation, gas rate and safe functioning

Check the pressure relief valve

Check for water leaks

Check the thermostat setting

19 / 46

What is required if there is a cooling tower on site?

Inspections by the water supplier

Regular visits by the Local Authority Environmental Health officer

A written scheme of examination

A formal logbook

20 / 46

What must you ensure to prevent unauthorised access to an unoccupied plant or switchgear room?

That a person is posted to prevent access

That the access door is locked

That the power supply is isolated

That a sign is posted

21 / 46

Which of the following actions should you take if a refrigerant leak is reported in a closed area?

No action is required, as refrigerant gas is completely harmless

Leave the system running until all of the gas has leaked out and then make a repair

Trace the leak and try to make a temporary repair

Switch off the system, ventilate the area and test to establish if it is safe to enter

22 / 46

If you arrive on site and find the mains isolator for a component is switched off, what should you do?

Switch it on and get on with your work

Ask people around the building and, if no-one responds, switch it on and get on with your work

Contact the person in control of the premises

Switch it on and check the safety circuits to see if there is a fault

23 / 46

When carrying out solvent welding on plastic pipework, what particular safety measure must you apply?

It must be done in daylight

The supervisor must be present

The area must be enclosed

The area must be well ventilated

24 / 46

What should be the maximum temperature for a cold water supply, after it has been run for one minute?

10°C

20°C

50°C

35°C

25 / 46

What precaution should be taken to protect against lighting failure in a confined space?

Secure a rope near the entrance and trail it behind you so that you can trace your way back

Ensure it is daylight when you do the work

Each operative should carry a torch

Remember where you got in

26 / 46

When must a shaft or pit be securely covered or have double guard-rails and toe-boards installed?

At a fall height of 3 m

At a fall height of 1 m

At a fall height of 2.5 m

When there is a potential risk of anyone falling into it

27 / 46

What is the correct action to take if natural gas is detected in an underground service duct?

Carry on working until the end of the shift

No action, as it is not harmful

Evacuate the duct

Carry on working but do not use electrical equipment

28 / 46

What is the ideal temperature for legionella to breed?

Below 20°C

Between 75°C and 100°C

Between 20°C and 45°C

Between 45°C and 75°C

29 / 46

Which of these statements is true in relation to the water used in cooling systems?

It should be replaced annually

It should be chemically treated

It should be chilled

It should be drinking water

30 / 46

How should access to a riser be controlled?

By those who are working in it

By the main contractor

By a site security operative

By a permit to work system

31 / 46

In the normal office environment what should be the hot water temperature at the tap furthest from the boiler, after it has been run for one minute?

At least 35°C

At least 50°C

At least 15°C

At least 100°C

32 / 46

What action should you take if a natural gas leak is reported in a closed area?

Ventilate the area and phone the gas emergency service

Turn off the light

Wear safety footwear

Establish whether or not it is safe to enter

33 / 46

Before starting work on a particular piece of equipment, who or what should you consult?

The manufacturer's data plate

The machine brochure

The operation and maintenance manual for the equipment

The store person

34 / 46

What is the procedure for ensuring that the electrical supply is dead before replacing an electric immersion heater?

Lock off the supply, isolate at the mains board, test the circuit and hang a warning sign

Switch off and disconnect the supply to the immersion heater

Switch off and cut through the electric cable with insulated pliers

Switch off and test the circuit

35 / 46

How is legionella transmitted?

By breathing contaminated airborne water droplets

Via rat urine

Through human contact

Through contact with dirty clothes

36 / 46

Where might you find information on the safe way to maintain the services in a building?

The safety officer

The noticeboard

The local Health and Safety Executive (HSE) office

The health and safety file for the building

37 / 46

Which type of power drill is most suitable for fixing a run of pipework outside in wet weather?

Any mains voltage drill with a power breaker

Drill with 110-volt power supply

Drill with 24-volt power supply

Battery-powered drill

38 / 46

When arriving at an occupied building, who or what should you consult to find out about any asbestos in the premises before starting work?

The building’s caretaker

The building's receptionist

The person responsible for the building, so you can view the asbestos register

The building's logbook

39 / 46

What is used to reduce 230-volts to 110-volts on site?

Residual current device (RCD)

Circuit breaker

Step-down generator

Transformer

40 / 46

How should liquefied petroleum gas (LPG) cylinders be carried to and from premises in a van?

In the back of the van

In the van with all the windows open

In a purpose-built container within the rear of the van, with appropriate signage

In the passenger footwell of the van

41 / 46

How should an adequate supply of breathable fresh air be provided in a confined space when breathing apparatus is not being worn?

An opening in the top of the confined space

An opening at the bottom of the confined space

Natural ventilation

Forced mechanical ventilation

42 / 46

What should you consider first when planning to work in a confined space?

Whether the correct tools have been arranged

Whether the job has been priced properly

Whether sufficient resource has been allocated

Whether the work could be done in another way to avoid the need to enter the confined space

43 / 46

Why is temporary continuity bonding carried out before removing and replacing sections of metallic pipework?

To prevent any chance of blowing a fuse

To provide a continuous earth for the pipework installation

To maintain the live supply to the electrical circuit

To prevent any chance of corrosion to the pipework

44 / 46

Who should fit a padlock and tag to an electrical lock-out guard?

The senior engineer

The site supervisor

Anyone working on the system

Only the person who fitted the lock-out guard

45 / 46

Which two of the following are classed as pressure systems?

Steam systems

Office tea urns

Cold water systems

Domestic heating systems

Medium and high temperature hot water systems at or above 95°C

46 / 46

What must you do before adding inhibitor to a heating system?

Bleed the heat emitters

Raise the system to working temperature

Check for leaks on the system

Read the COSHH assessment for the product

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