Chapter 5: Inspection and Testing Onboard Ship Quiz

Make sure that all safety precautions are observed = Ensure compliance with safety protocols Have a clear understanding of the installation, how it is designed and how it has been installed = Understand the design and installation of the system Make sure that the instruments to be used for the tests are to the necessary standards and have been recently recalibrated to ensure their accuracy = Check calibration and standards of testing instruments Check that the test leads to be used are in good order, with no cracked or broken insulation or connectors, and are fused where necessary to comply with the Health and Safety Executive Guidance = Inspect testing leads for damage and proper insulation

Prevent dangers during testing = Ensure safety during testing procedures Arranged to prevent dangers = Organize testing procedures to avoid hazards Prominent notices should be displayed to indicate that no attempt should be made to use the installation whilst testing is in progress = Inform others not to use the installation during testing Be aware of the dangers associated with the use of high voltages for insulation testing = Understand risks related to high voltage insulation testing

Dangers associated with high voltages for insulation testing = Be cautious when dealing with high voltage for insulation tests Cables or capacitors connected in a circuit which has been insulation tested may hold high potential for a significant time = Be mindful of residual charges in circuit components after insulation testing The tester must always be aware of the hazards applying to himself and to others due to his activities = The tester should be conscious of risks to oneself and others during testing activities No attempt should be made to use the installation whilst testing is in progress = Ensure that no one uses the installation during testing

Competent person = Someone who is skilled and experienced in the type of installation being inspected and tested Why inspection and testing is needed = To verify that electrical installations have been designed and installed according to regulations Earth-fault loop impedance = The low impedance that protects installation users against fatal electric shock due to indirect contact Open circuit in a protective conductor = A situation where the whole earthed system could become live during the earth-fault loop test

Tester = The person who carries out the test and inspection and ensures safety of self and others Qualified electrician or electrical engineer = A term defining someone who is 'competent' to carry out inspection and testing Regulations = Control the way in which electrical installations are designed and installed Supply system = Part of the loop that is not connected until work is complete