Health and Safety Quiz 2 – Electrical Safety (CSCS questions)


Hello everyone, below is a Electrotechnical health and safety quiz to test to put your knowledge to the test. Can you get them all right? If you enjoy this quiz please feel free to share this to your friends and colleagues. The questions are inspired by the ECS 2015 health and safety revision guide, so these are the types of questions asked when applying for a CSCS card. Enjoy the quiz!

In accordance with the Electricity at Work regulations, when considering whether to work live a responsible person should do the following:
Carry out a risk assessment
Before working live one should identify and assess the risks involved and the methods of controlling them.
Only work dead
Nope wrong!
Carry out full testing
Close but no cigar.
Which of the following would you use to replace the fuse in a plug if fuses were NOT available?
None of the options listed
A fuse is often the main safety device in an electrical circuit. A blown fuse must only be replaced by a fuse of the correct type and rating.
A bit of wire
Nope wrong!
A nail
No… just no.
To prove a circuit or equipment is dead after isolation what is the FIRST activity in the sequence of events?
Check that the voltage detector is working on a proving device, known live source or inbuilt test feature
This will prove that that the voltage detector  is working.
Check between line and earth
Nope wrong!
Check between line and neutral
The specific effects on the human body of a major electric shock are one of the following:
Burns and cardiac arrest
This is the main effect on the human body
Nope wrong!
Chest pains
Close but no cigar.
From the hierarchy of risk control, which option must be considered first?
Eliminating the hazard
The most effective method of risk control is to completely eliminate the hazard. The hierarchy of risk control is as follows: Eliminate the hazard > Reduce the hazard > Prevent people coming into contact with the hazard > Implement safe systems of work > Personal protective equipment (last line of defence).
Reducing the hazard
Nope wrong!
Preventing people coming into contact with the hazard
Close but no cigar.
In the context of a risk assessment, what do you understand by the term risk?
The combination of the likelihood of a hazardous event occurring and the consequence of the event.
Hazard and risk are not the same. Risk = likelihood x consequence.
An unsafe act or condition
Nope wrong!
Any work activity that can be described as dangerous
Close but no cigar.
The lowest level of electrical current which can harm the human body is normally measured in:
Research has shown that a person is in serious danger of a fatal electric shock at, or above, approximately 30 milliamps.
Nope wrong!
Close but no cigar.
What action should you take if a colleague gets an electric shock?
Cut off the power and call for help
If you can switch the power off, the electric hazard will be removed. First aid assistance will then probably be required. Do not touch someone who is still in contact with live electrical cables as you could also receive an electric shock.
Try to pull them to safety
Nope wrong!
Phone the electricity board immediately
Close but no cigar.
How far must you go to ensure you have done enough to reduce risk?
Reduce risks so far as reasonably practicable
This is the weighing up of the benefits of risk reduction against the time, cost and effort to implement that risk control. If there is a criminal case, the judge will decide whether the risk was reasonably forseeable, possibly using three tests of common knowledge, industry knowledge and expert knowledge to decide on the reasonable practibility of the risk controls used.
All risks must be mitigated
If only it were that easy!
All risks that are cheap enough to resolve
Close but no cigar.
Under the Electricity at Work Regulations, live working is considered:
Only to be allowed in exceptional circumstances
Extra controls must be employed, including training, supervision and use of suitable tools and protective equipment.
Never to be allowed
Nope wrong!
As entirely acceptable
Close but no cigar.
Why is it important to report ’ near miss ’ accidents to your employer?
So lessons can be learned, preventing an accident next time
The HSE advises that ‘near misses’ should be investigated to prevent their recurrence. Some employers provide an incentives for near miss reporting, if you can catch issues before they cause injury you will have a happier, healthier workforce.
It ’ s the law
Nope wrong!
So that someone can be disciplined
This is the opposite of what you want to do as it will stop people reporting.
A residual current device is designed to operate in the event of one of the following:
An earth fault
An RCD is a sensitive safety device that switches off electricity automatically if there is a fault. It provides additional protection against the risk of electric shock.
Lightning strike on the supply
Nope wrong!
Which of the following does the Electricity at Work (EAW) regulations apply to?
All persons engaged for work purposes
The EAW Regulations impose duties on employers, employees and the self employed.
Employers only
Not quite.
Employees only
Incorrect 😦
Which of the following is NOT a suitable means of isolating a circuit?
Putting insulating tape over the circuit breaker
The isolating device should be switched off or the fuse removed. The switch, circuit breaker or enclosure should then be locked and the key removed. A notice or label should also be posted to warn that someone is working on the circuit or apparatus.
Padlocking the isolating switch
Right thing to do but wrong answer.
Fitting a padlocked circuit breaker lockout
This would be the right thing to do but we are looking for what is NOT a suitable means of isolation.
Optical fibre cable remnants should not be left lying around on site because:
They can pierce the skin or eyes  
Fibre fragments can enter the bloodstream and cause infections in the skin or eyes. All fibre waste, particularly small pieces, should be placed in suitable containers.
They can be hot and burn upon contact
Not quite.
They are toxic
Incorrect 😦

I hope you enjoyed this quiz! Did you manage to get 100% right first attempt? Feel free to share this with your colleagues or friends to test their knowledge.

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