CSCS Services Mock Test

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Specialists Test

HVACR - Services and Facilities Maintenance

1 / 46

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

The safety officer

The noticeboard

The health and safety file for the building

The local Health and Safety Executive (HSE) office

2 / 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 a respirator

Follow a job-specific risk assessment and method statement

Wear appropriate overalls

3 / 46

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

Check the pressure relief valve

Check for flueing, ventilation, gas rate and safe functioning

Check for water leaks

Check the thermostat setting

4 / 46

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

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

Switch off and cut through the supply with insulated pliers

Switch off and remove the fuses

5 / 46

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

Battery-powered drill

Any mains voltage drill with a power breaker

Drill with 24-volt power supply

Drill with 110-volt power supply

6 / 46

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

The operation and maintenance manual for the equipment

The manufacturer's data plate

The machine brochure

The store person

7 / 46

What is the ideal temperature for legionella to breed?

Between 20°C and 45°C

Between 75°C and 100°C

Between 45°C and 75°C

Below 20°C

8 / 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?

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

Go into the service duct and continue to trace the pipework

Stop work until a risk assessment has been carried out

Ask someone in the building to act as your second person

9 / 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

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

Check for overhead power lines

Check that the brakes are locked on

10 / 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?

Spread it about to lessen the depth

Keep people out of the area and inform your supervisor

Warn other people as they tread through it

Do nothing, as it will eventually soak into the floor

11 / 46

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

Wear safety footwear

Turn off the light

Establish whether or not it is safe to enter

Ventilate the area and phone the gas emergency service

12 / 46

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

Circuit breaker

Step-down generator

Residual current device (RCD)

Transformer

13 / 46

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

Cable trays

False ceilings

Overhead service cables

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

Wearing the correct goggles

The hoses may not be long enough

The burner will be hard to light

Unburnt oxygen may cause an oxygen-enriched atmosphere

15 / 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

Forced mechanical ventilation

An opening at the bottom of the confined space

Natural ventilation

16 / 46

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

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

Wrap the defective cable with approved electrical insulation tape

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

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

17 / 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

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

Trace the leak and try to make a temporary repair

18 / 46

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

At a fall height of 1 m

When there is a potential risk of anyone falling into it

At a fall height of 3 m

At a fall height of 2.5 m

19 / 46

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

The supervisor must be present

It must be done in daylight

The area must be well ventilated

The area must be enclosed

20 / 46

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

That a sign is posted

That a person is posted to prevent access

That the access door is locked

That the power supply is isolated

21 / 46

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

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

In the van with all the windows open

In the back of the van

In the passenger footwell of the van

22 / 46

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

Whether sufficient resource has been allocated

Whether the correct tools have been arranged

Whether the job has been priced properly

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

23 / 46

Which two of the following are classed as pressure systems?

Cold water systems

Office tea urns

Steam systems

Domestic heating systems

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

24 / 46

Who should be informed if a legionella outbreak is suspected?

The Health and Safety Executive (HSE)

The police

The nearest hospital

A coroner

25 / 46

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

A hammer and chisel

A multimeter

A neon screwdriver

A cable tracer

26 / 46

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

For all high-risk work activities

At the beginning of each shift

When there is enough time to complete the paperwork

For all equipment isolations

27 / 46

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

Modify one of the tools you have

Use the best tool available in the toolkit

Wait until you have the appropriate tool for the task

Borrow a tool from the building caretaker

28 / 46

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

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

It has a tool tray towards the top of the steps

Your supervisor has positioned and erected the steps

The restraint mechanism is spread to its full extent

29 / 46

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

It should be chilled

It should be replaced annually

It should be drinking water

It should be chemically treated

30 / 46

How should access to a riser be controlled?

By a permit to work system

By a site security operative

By those who are working in it

By the main contractor

31 / 46

How is legionella transmitted?

Through human contact

By breathing contaminated airborne water droplets

Via rat urine

Through contact with dirty clothes

32 / 46

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

20°C

35°C

50°C

10°C

33 / 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

Remember where you got in

Each operative should carry a torch

34 / 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

Contact the person in control of the premises

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

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

35 / 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 receptionist

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

The building's logbook

The building’s caretaker

36 / 46

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

A written scheme of examination

Regular visits by the Local Authority Environmental Health officer

A formal logbook

Inspections by the water supplier

37 / 46

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

Switch off and cut through the electric cable with insulated pliers

Switch off and test the circuit

Switch off and disconnect the supply to the immersion heater

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

38 / 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 50°C

At least 15°C

At least 35°C

At least 100°C

39 / 46

What is required before a pressure system can be operated?

A hot-work permit

A minimum of two competent persons to operate the system

A written scheme of examination

Operative certification

40 / 46

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

In hot water taps above 50°C

In a river

In infrequently used shower heads

In drinking water

41 / 46

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

Raise the system to working temperature

Bleed the heat emitters

Check for leaks on the system

Read the COSHH assessment for the product

42 / 46

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

The site supervisor

Anyone working on the system

The senior engineer

Only the person who fitted the lock-out guard

43 / 46

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

Yellow

Black

Blue

Red

44 / 46

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

Carry on working but do not use electrical equipment

Carry on working until the end of the shift

Evacuate the duct

No action, as it is not harmful

45 / 46

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

To maintain the live supply to the electrical circuit

To prevent any chance of blowing a fuse

To provide a continuous earth for the pipework installation

To prevent any chance of corrosion to the pipework

46 / 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

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