Refrigeration CSCS Mock Test

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Specialists Test

HVACR - Refrigeration and Air Conditioning

1 / 46

What must you ensure before using a ladder?

That an apprentice or workmate is standing by in case you slip and fall

That no-one else has booked the ladder for their work

That it is secured to prevent it from moving sideways or sliding outwards

That the weather forecast is for a bright, clear day

2 / 46

When planning a lifting operation how should the sequence of operations to enable a safe lift be confirmed?

Via a notice in the canteen

In a method statement

By verbal instruction

In a radio telephone message

3 / 46

What should you do if you need additional temporary wiring for your power tools whilst working on site?

Disconnect a longer cable serving somewhere else and reconnect it to where you need it

Stop work until an authorised supply has been installed

Speak to an electrician and ask them to do the temporary wiring

Find some cable and extend the wiring yourself

4 / 46

If you have to drill through a wall panel that you suspect contains an asbestos material, what should you do?

Stop work and report it

Put on a dust mask

Put on safety goggles

Ignore it and carry on

5 / 46

How should you position the exhaust of an engine-driven generator that has to be run inside a building?

Outside the building

In a riser

In another room

In a stairwell

6 / 46

What should you ensure when pressure testing with nitrogen?

That the nitrogen bottle is laid down to avoid it falling over

That the temperature of the bottle is at room temperature to avoid a temperature pressure difference

That the nitrogen gauge can take the pressure required and that the bottle is secured upright

That purge brazing has taken place during the installation

7 / 46

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

Overhead service cables

False ceilings

Water pipes

Cable trays

8 / 46

How should extension leads in use on site be positioned?

They should be coiled on a drum or cable tidy

They should be located so as to prevent a tripping hazard

They should be laid out in the shortest, most convenient route

They should be raised on bricks

9 / 46

If refrigerant gases are released into a closed room in a building, what would they do?

Rise to the ceiling

Sink to the floor

Stay at the same level

Disperse safely within the room

10 / 46

What is the recommended maximum height for a free-standing mobile tower?

2 m

The height recommended by the manufacturer

There is no restriction

12 m

11 / 46

What is edge protection designed to do?

Prevent the fall of people and materials

Prevent rainwater running off the roof onto workers below

Secure tools and materials close to the edge

Make access to the roof easier

12 / 46

When using a van to transport a refrigerant bottle, how should it be carried?

In the passenger footwell of the van

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

In the back of the van

In the van with all the windows open

13 / 46

You have been asked to install a number of ceiling-mounted air-conditioning units in a large, open-plan area, which has a good floor. What is the best way to access the work area?

From scaffold boards and floor stands

From a stepladder

By standing on packing cases

From a mobile tower

14 / 46

Which of these statements is true in relation to the safe working load (SWL) of lifting equipment?

It is the absolute maximum safe working load

It may be exceeded by no more than 25%

It is never marked on the equipment but kept with the test certificates

It is provided for guidance only

15 / 46

When working in a riser, how should access be controlled?

By a permit to work system

By those who are working in it

By a site security operative

By the main contractor

16 / 46

When working on refrigeration systems containing hydrocarbon (HC) gases, what particular danger needs to be considered?

Special personal protective equipment (PPE) should be worn to prevent injuries caused by the cold

There should be no sources of ignition

The work cannot be carried out when the weather is hot

Extra lighting is needed to prevent trips

17 / 46

Who is permitted to install, service or maintain systems that contain or are designed to contain refrigerant gases?

The person whose plant contains the gas

A competent, trained person who works for an F-Gas registered company

A fully qualified electrician

A Gas Safe registered engineer

18 / 46

When a refrigerant leak is reported in a closed area, what should you do first before entering the area?

Get a torch

Establish that it is safe to enter

Wear safety footwear

Ventilate the area

19 / 46

What safety devices should be fitted between the pipes and the gauges of oxyacetylene brazing equipment?

On-off taps

Flashback arresters

Non-return valves

Flame retardant tape

20 / 46

Which item of electrical equipment does not require portable appliance testing?

240-volt charger for battery-powered tools

Battery-powered rechargeable power tool

110-volt electrical power tool

240-volt electrical power tool

21 / 46

When repairing an electrically driven compressor, what is the minimum safe method of isolation?

Pressing the stop button

Turning off the local isolator

Pressing the emergency stop button

Locking off and tagging out the local isolator

22 / 46

What should you do when it is necessary to cut into an existing refrigerant pipe?

Work on the pipework with the refrigerant gas still in it

Not carry out the work at all, because of the risks

Vent the gas in the pipework to atmosphere

Recover the refrigerant gas and make a record of it, then do the work

23 / 46

Where is the safest place to store refrigerant cylinders when they are not in use?

Outside in a special locked storage compound

In the immediate work area, ready for use the next day

Inside the building in a locked cupboard

In a company vehicle

24 / 46

How should cylinders (full or empty) that contain liquefied petroleum gas (LPG) or acetylene be stored on site?

As close to the point of use as possible

In a locked cage at least 3 m from any oxygen cylinders

In a locked cellar with clear warning signs

Covered by a tarpaulin to shield the compressed cylinder from sunlight

25 / 46

If you are carrying out hot works with a blowtorch, when should you stop using it?

At least four hours before you leave the site

Just before you leave the site

At least one hour before you leave the site

At least two hours before you leave the site

26 / 46

Why must you never use oxygen when pressure testing?

When oxygen meets oil in a compressor it could explode and cause serious injury or death

The molecules of the gas are too small

The pressure required would not be reached

There is too much temperature pressure difference and a true record will not be given

27 / 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

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

28 / 46

What is the first thing that should be done when a new refrigeration system has been installed?

It should be left open to the air

It should be turned off at the electrical switch

It should be filled with refrigerant

It should be pressure and leak tested

29 / 46

What should you establish before entering a cold room?

Whether the exit door is fitted with an internal handle

The temperature of the cold room

Whether there are lights and power in the cold room

The size of the cold room

30 / 46

Where should liquefied petroleum gas (LPG) cylinders be positioned when supplying an appliance in a site cabin?

Inside the cabin next to the appliance

Outside the cabin

Under the cabin

Inside the cabin in a locked cupboard

31 / 46

How should you position the bottles when using oxyacetylene brazing equipment?

Stood upright and secured

Angled at 45°

Laid on their side and secured

Stood upside down

32 / 46

You have to carry out a job, over a few days, on the flat roof of a two-storey building, about 1 m from the edge of the roof, which has a low parapet. How should you reduce your risk of falling?

Ask for double guard-rails and toe-boards to be installed to prevent you falling

Use a full body harness, lanyard and anchor while doing the job

Carry on with the job, provided you don't get dizzy with heights

Get your mate to do the work, while you hold on to them

33 / 46

Which of these statements is true of the water in water-cooled systems?

It should be replaced annually

It should be chemically treated

It should be properly filtered

It should be drinking water

34 / 46

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

Check for overhead power lines

Make sure that the tower does not rock or wobble

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

Check that the brakes are locked on

35 / 46

Which of these items of personal protective equipment (PPE) is designed to protect against infrared radiation damage to the eyes during flame cutting or welding?

Respiratory protective equipment (RPE)

Clear goggles

Dust mask

Eye protection with a tinted filter lens

36 / 46

What should be done before a mobile tower is moved?

Arrangements must be made with the forklift truck driver

A permit to work must be issued

The principal contractor must give their approval

All people and equipment must be removed from the platform

37 / 46

What must be done first before any roof work is carried out?

Permits to work must be issued only to those allowed to work on the roof

A weather forecast must be obtained

The operatives working on the roof must be trained in the use of safety harnesses

A risk assessment must be carried out

38 / 46

When handling refrigerant gases, what personal protective equipment (PPE) should you wear as a minimum?

Eye protection, overalls, thermal-resistant gloves and safety boots

Overalls, thermal-resistant gloves, helmet and safety boots

Eye protection, overalls, harness and safety boots

Eye protection, overalls, thermal-resistant gloves and helmet

39 / 46

When a new piece of plant has been installed but has not been commissioned, how should it be left?

With all valves and switches locked off

With all valves and switches turned on and ready to use

With all valves and switches turned off

With all valves and switches clearly labelled

40 / 46

When using a blowtorch or brazing equipment to joint copper tube and fittings in a property, how should a fire extinguisher be made available?

It should be available in the immediate work area

It should be held over the joint while you are using the blowtorch

It should be available only if a property is occupied

It should be used to cool the fitting

41 / 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

42 / 46

Which two of the following are essential safety checks that need to be carried out before using oxyacetylene equipment?

That the cylinders are full

That the trolley wheels are the right size

That the area is well ventilated and clear of any obstructions

That the cylinders, hoses and flashback arresters are in good condition

That the cylinders are the right weight

43 / 46

If you are working where welding is being carried out, what should be provided to protect you from welding flash?

Warning notices

A fire extinguisher

Screens

A hi-vis vest

44 / 46

What must be clearly marked on all lifting equipment?

The name of the manufacturer

The next test date

The specification of material from which it is made

The safe working load

45 / 46

Why is it essential to take great care when handling oxygen cylinders?

They contain highly flammable liquid gas

They contain highly flammable compressed gas

They are filled to extremely high pressures

They contain poisonous gas

46 / 46

If you find a coloured wire sticking out of an electrical plug what is the correct action to take?

Pull the wire clear of the plug and report it to your supervisor

Push it back into the plug and carry on working

Take the plug apart and carry out a repair

Mark the item as defective and follow your company procedure for defective items

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