Working with High Voltage
Test results
Your result: 88%
Right answers:
1
What are the three phases of risk evaluation?
Your answer is correct:
Preliminary phase, planning phase and execution phase.2
Can the “Dead working” method be applied if there is a danger of coming into contact with live parts?
Your answer is correct:
Yes, but only if the live parts can be de-energised and protected against accidental re-energising or shrouded.3
Live working presents little risk if undertaken by a person with the correct competence.
Your answer is correct:
False.4
The Regulations require that everyone working on, or in the vicinity of, electrical installations, undertakes safety training.
Your answer is correct:
True.5
Who is responsible for removing safety measures on high voltage installations?
Your answer is correct:
The crew member who carried out the work.6
What is the purpose of a single-line diagram?
Your answer is correct:
To provide necessary information about the installation’s lay-out.7
What must you do if there is anything that you are unsure about before starting the work?
Your answer is correct:
Obtain clarification.8
A barrier can reduce the probability of an undesirable event occurring or its consequences.
Your answer is correct:
True.9
Which of the following items is considered personal protective equipment?
Your answer is correct:
Insulated gloves.10
When working on electrical installations, it is important that hearing protection has a metal head-band.
Your answer is correct:
False.11
Which of the following is the correct definition of the term “high voltage”?
Your answer is correct:
Voltage which normally exceeds 1 000 V alternating current (AC) or 1 500 V direct current (DC).12
What is the purpose of the Regulations?
Your answer is correct:
To maintain a high level of safety during operation and work on, or in the vicinity of, electrical installations by requiring that all activities are adequately planned and the necessary safety precautions are put in place.13
The definition below describes which of the following terms? “Equipment that gives protection against direct contact from any usual approach or access point”.
Your answer is correct:
Shrouding.14
Is work on “partly de-energised” installations within the framework of the Regulations?
Your answer is correct:
Yes.15
Which of the following statements about portable earthing devices is true?
Correct answer:
The earth connection must be established before it is connected to the installation.Your Answer:
You must connect the device to the installation that is to be earthed before establishing the connection to earth.16
Which of the following safety barriers are required for “live working”?
Your answer is correct:
l) Installation protection; ll) Protection against accidental re-energising.17
Why is it so dangerous for an electronic current to pass from hand to hand or hand to foot?
Your answer is correct:
Because much of the current will pass through the heart.18
What is the first thing you should do if you find a person trapped in a live installation?
Your answer is correct:
Call 113.19
What do the different categories of insulated gloves determine?
Correct answer:
The voltages they may be used with.Your Answer:
Which external influences (such as acid or low temperature for example) they may be used.20
In which of the following circumstances does the two-person requirement apply?
Your answer is correct:
When working on or in the vicinity of high voltage installations.; When working on or in the vicinity of low voltage installations with a high degree of risk.21
Live working is more dangerous than dead working.
Your answer is correct:
True.22
Voltage testing must be performed in such a manner that it never entails danger to the life or health of the person performing the check.
Your answer is correct:
True.23
What is temporary earthing for work?
Your answer is correct:
Earthing and short-circuiting of installation parts with a less than fully dimensioned earthing device on or in close proximity to the work location.24
Which of the following working methods requires control measurements be taken to ensure that the installation is de-energised?
Your answer is correct:
Dead working.25
Do crew members require training in the use of live working equipment to perform live work on low voltage installations?
Your answer is correct:
Yes.26
Which of the following safety barriers are required when working in the vicinity of live parts on a high-voltage installation?
Correct answer:
l) Distances; ll) Personal protective equipment.Your Answer:
l) Personal protective equipment; ll) Installation protection.27
What is the first thing you must do when removing safety measures?
Your answer is correct:
Notify the work team that the job has been completed and no further work is allowed.28
Who is responsible for reporting accidents involving personal injury caused by electricity?
Your answer is correct:
The Master or the Shipowner.29
Are risk evaluations and the choice of working method integral parts of planning a job?
Your answer is correct:
Yes.30
Which of the following statements about earthing sticks is true?
Your answer is correct:
An earthing stick is an insulated rod that can be used to attach phase clamps to the part of the installation that is to be earthed and short-circuited.31
Which of the following statements about insulated tools is true?
Your answer is correct:
Hand-insulated tools only have protection on the handle/grip while the ‘business-end’ is not insulated.32
During maintenance, is deviation from the two-barrier requirement ever allowed?
Correct answer:
No, never.Your Answer:
Yes, but only if the requirement cannot be fulfilled in practice and there is a procedure that helps ensure personal safety.33
Installations which are not protected from direct contact must be locked and the keys only made available to which of the following?
Your answer is correct:
Access-permit holders.34
Before using an electrically insulated helmet, you should always examine it for damage.
Your answer is correct:
True.35
Who usually performs the risk evaluation before work in a high voltage installation?
Correct answer:
The Chief Engineer.Your Answer:
The Master.36
Which of the following safety barriers are required when using the “dead working” method?
Your answer is correct:
I) De-energising and voltage testing; ll) Protection against accidental re-energising.37
What does the class of an electrically insulated helmet determine?
Your answer is correct:
The test voltage that the helmet tolerates and the nominal voltage at which it can be used.38
The degree to which tools must be insulated and the necessary extent of the use of protective shielding must be evaluated in combination with the personal protective equipment used for each job.
Your answer is correct:
True.39
When disconnecting an electrical installation using isolation switches – why must the switches have visible isolation points or a reliable indicator.
Your answer is correct:
So that it is simple to carry out a reliable check of the disconnection.40