7.1.4 Safe Working Practices Flashcards
What should you never do when handling electrical equipment?
Never handle or operate electrical equipment with wet hands or feet, or in a wet area.
What type of tools should be used when working on aircraft?
Pneumatic tools are preferable whenever they are available.
What should you avoid with electrical wires and cables?
Do not allow electrical wires and cables to dangle over sharp edges.
What should you check for on electrical cables?
Always ensure that electrical cables are not frayed and that they have undamaged insulation.
What should you never do with electrical wires?
Never trail electrical wires through oil, water, or other liquids.
What is required for electrical equipment?
All equipment should have a suitable plug fitted and be either earthed, or where necessary, double insulated.
How often should electrical equipment be checked?
Electrical equipment needs to be checked regularly, and a serviceable label should be attached, with the most recent test date appended.
What type of electrical equipment should be used in hazardous areas?
Only use approved and specially designed explosion proof electrical equipment in hazardous areas, such as fuel tanks.
What are the potential effects of electric shock?
The passage of electric current can cause muscular contractions, respiratory failure, fibrillation of the heart, cardiac arrest, or injury from internal burns.
What factors affect the severity of electric shock injuries?
The nature and severity of injury depends upon the magnitude, duration, and path of the current through the body.
What must be done before working on aircraft electrical systems?
Ensure that external electrical power has been switched off.
What should be done with the aircraft battery before working on electrical systems?
Disconnect the aircraft battery.
What should be placed at external power receptacles of the aircraft?
Place warning signs advising personnel not to apply power.
What should be done with circuit breakers before work?
Pull and tag all relevant circuit breakers prior to work and ensure they are reset afterwards.
What should be checked before applying power to aircraft systems?
Ensure all switches are in the correct position for the system they relate to.
What hazards do compressed gases present?
Compressed gases provide a number of potential dangers to personnel and must always be treated with extreme caution.
What must be done before charging an aircraft system with a compressed gas?
Purge the hose on the gas bottles to discharge contaminants to the atmosphere.
How should pressure be increased when charging aircraft systems?
Increase the pressure in slow increments to ensure that the gas does not become hot.
What should be checked on pressure gauges?
Always check that pressure gauges are within their calibration date.
What is the typical operating pressure for compressed air in workshops?
Compressed air is generally supplied at an operating pressure of approximately 80 psi.
What can happen if compressed air is directed at people?
Foreign objects can be injected and lodged under the skin, or flying particles can cut or bruise the body.
What can happen if compressed air is blown into the eyes?
Foreign particles blown into eyes can cause eye injuries that can lead to a loss of sight.
What can injecting an air bubble into the bloodstream cause?
It can lead to a fatal embolism.
What can happen if air is blown into the mouth?
It can rupture the oesophagus or the lungs.
What should never be done with compressed air tools?
Never point compressed air tools at people.
What personal protective equipment (PPE) should be worn when using compressed air?
Always wear proper PPE, including safety glasses, face shields, and hearing protection.
What must be done with compressed air supplies when not in use?
Always disconnect compressed air supplies when not in use.
What should be done before replacing components on a power tool?
Always disconnect the compressed air supply to a power tool before replacing expendable components.
What is a major hazard associated with oxygen?
Oxygen can cause fire and explosion if misused.
What should be avoided to prevent fire when working with oxygen?
Avoid oxygen coming into contact with oils and greases.
What type of tools should be used on oxygen systems?
Only oxygen-specific tools should be used on oxygen systems.
What should be used for lubricating tools on oxygen systems?
Only approved lubricants, such as Perfluorinated Polyether (PFPE) lubricants, should be used.
What must be done before charging breathing oxygen systems?
The oxygen must be inhaled to ensure it is not contaminated.
What must all oils and chemicals have?
All oils and chemicals are to have MSDS or SDSs that contain information for safe handling.
What does the GHS safety data sheet include?
The GHS safety data sheet is a 16-section document that includes identification, hazard identification, and first-aid measures, among others.
What is a major threat during aircraft fuelling?
The main threat is the risk of fire.
What must be avoided to prevent static discharge during fuelling?
Static discharge in the form of a spark must be avoided at all times.
What defines confined space working?
Any enclosed space with a risk of death or serious injury from hazardous substances or dangerous conditions.
What dangers can arise in confined spaces?
Dangers include lack of oxygen, poisonous gas, fire and explosions, and hot conditions.
What must be done if entry into a confined space cannot be avoided?
Ensure that a safe system is available to work inside the space, and monitor the environment for safety.
