CSCS Services Mock Test

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Specialists Test

HVACR - Services and Facilities Maintenance

1 / 46

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

In drinking water

In infrequently used shower heads

In a river

In hot water taps above 50°C

2 / 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?

Do nothing, as it will eventually soak into the floor

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

3 / 46

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

Wear safety footwear

Establish whether or not it is safe to enter

Turn off the light

Ventilate the area and phone the gas emergency service

4 / 46

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

Unburnt oxygen may cause an oxygen-enriched atmosphere

The hoses may not be long enough

The risk of a flammable gas leak

Wearing the correct goggles

The burner will be hard to light

5 / 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

Ensure their timesheet is accurate and countersigned

Notify the site manager of the details of the work

6 / 46

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

Borrow a tool from the building caretaker

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

7 / 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 a sign is posted

That the power supply is isolated

That the access door is locked

8 / 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

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

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

9 / 46

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

Check for water leaks

Check the thermostat setting

Check for flueing, ventilation, gas rate and safe functioning

Check the pressure relief valve

10 / 46

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

The area must be well ventilated

The supervisor must be present

The area must be enclosed

It must be done in daylight

11 / 46

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

Blue

Yellow

Red

Black

12 / 46

Who should be informed if a legionella outbreak is suspected?

A coroner

The Health and Safety Executive (HSE)

The police

The nearest hospital

13 / 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 store person

The manufacturer's data plate

The machine brochure

14 / 46

What is required before a pressure system can be operated?

Operative certification

A minimum of two competent persons to operate the system

A hot-work permit

A written scheme of examination

15 / 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

Remember where you got in

Each operative should carry a torch

Ensure it is daylight when you do the work

16 / 46

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

Follow a job-specific risk assessment and method statement

Wear a respirator

Wear appropriate overalls

Put the old filters in a dustbin

17 / 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 100°C

At least 15°C

At least 35°C

At least 50°C

18 / 46

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

For all equipment isolations

For all high-risk work activities

When there is enough time to complete the paperwork

At the beginning of each shift

19 / 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?

Ask someone in the building to act as your second person

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

20 / 46

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

Only the person who fitted the lock-out guard

The senior engineer

Anyone working on the system

The site supervisor

21 / 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 maintain the live supply to the electrical circuit

To prevent any chance of corrosion to the pipework

To provide a continuous earth for the pipework installation

22 / 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

The restraint mechanism is spread to its full extent

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

Your supervisor has positioned and erected the steps

23 / 46

How should access to a riser be controlled?

By a site security operative

By a permit to work system

By the main contractor

By those who are working in it

24 / 46

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

It should be drinking water

It should be chemically treated

It should be chilled

It should be replaced annually

25 / 46

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

Bleed the heat emitters

Raise the system to working temperature

Read the COSHH assessment for the product

Check for leaks on the system

26 / 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

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

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

27 / 46

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

The noticeboard

The health and safety file for the building

The local Health and Safety Executive (HSE) office

The safety officer

28 / 46

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

No action, as it is not harmful

Evacuate the duct

Carry on working but do not use electrical equipment

Carry on working until the end of the shift

29 / 46

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

Drill with 24-volt power supply

Any mains voltage drill with a power breaker

Drill with 110-volt power supply

Battery-powered drill

30 / 46

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

Cable trays

Overhead service cables

False ceilings

Water pipes

31 / 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 at the bottom of the confined space

Natural ventilation

An opening in the top of the confined space

Forced mechanical ventilation

32 / 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

When there is a potential risk of anyone falling into it

At a fall height of 2.5 m

33 / 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 for overhead power lines

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

Check that the brakes are locked on

34 / 46

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

50°C

10°C

20°C

35°C

35 / 46

Which two of the following are classed as pressure systems?

Domestic heating systems

Steam systems

Cold water systems

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

Office tea urns

36 / 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 building’s caretaker

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

The building's logbook

37 / 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

38 / 46

How is legionella transmitted?

By breathing contaminated airborne water droplets

Via rat urine

Through contact with dirty clothes

Through human contact

39 / 46

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

A formal logbook

Regular visits by the Local Authority Environmental Health officer

A written scheme of examination

Inspections by the water supplier

40 / 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

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 test the circuit

41 / 46

What is the ideal temperature for legionella to breed?

Below 20°C

Between 45°C and 75°C

Between 20°C and 45°C

Between 75°C and 100°C

42 / 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

43 / 46

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

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

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

No action is required, as refrigerant gas is completely harmless

44 / 46

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

Transformer

Circuit breaker

Step-down generator

Residual current device (RCD)

45 / 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

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

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

46 / 46

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

Whether the correct tools have been arranged

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

Whether sufficient resource has been allocated

Whether the job has been priced properly

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