Electrical Equipment Safety in Aviation
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Electrical Equipment Safety in Aviation

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@ModestModernism

Questions and Answers

What should you do if you do not have the authority to correct an unsafe condition?

  • Report the hazard or potential hazard to your supervisor (correct)
  • Ignore the condition and hope it goes away
  • Take temporary precautions and wait for the authority to correct it
  • Try to correct the condition anyway
  • Why is it important to find the source of an unsafe condition?

  • To correct the problem at the source and prevent future occurrences (correct)
  • To prepare a report for upper management
  • To blame someone for the condition
  • To take temporary precautions
  • What should you do if you cannot correct an unsafe condition due to a shortage of funds, personnel, or equipment?

  • Try to correct the condition with the available resources
  • Take temporary precautions to protect yourself and your co-workers (correct)
  • Report the condition to your supervisor and do nothing else
  • Stop work immediately and wait for the resources to become available
  • Why is it important to have up-to-date processes in place?

    <p>To prevent accidents and ensure safety</p> Signup and view all the answers

    What is the main reason for accidents in the workplace?

    <p>Poor attitude and motivation</p> Signup and view all the answers

    What should you do in an emergency situation?

    <p>Take corrective action immediately</p> Signup and view all the answers

    What is the primary reason for storing hazardous materials properly in workshops?

    <p>To prevent health risks from dusts and fumes</p> Signup and view all the answers

    What should you do if you are unsure about the suitability of a tool for an operation?

    <p>Ask technical staff for guidance</p> Signup and view all the answers

    Why is it important to clean up clutter in the workplace?

    <p>To reduce the risk of accidents and emergencies</p> Signup and view all the answers

    What should you do before bringing new materials or solutions into the laboratory or workshop?

    <p>Show the materials to technical staff to assess potential risks</p> Signup and view all the answers

    What is the primary purpose of fume extraction hoods?

    <p>To minimize exposure to hazardous fumes</p> Signup and view all the answers

    What is a characteristic of advanced composite materials?

    <p>They are stronger than individual component materials</p> Signup and view all the answers

    What is a common cause of accidents in the workplace?

    <p>Acting in a hurry or doing silly things</p> Signup and view all the answers

    Why is it important to stop and think before acting in the workshop?

    <p>To reduce the risk of accidents and emergencies</p> Signup and view all the answers

    What is the primary purpose of a Safety Data Sheet (SDS)?

    <p>To identify the hazards of a chemical and provide guidance on safe handling, storage, and disposal</p> Signup and view all the answers

    When working in the sun, what is the minimum recommended protection level for sunscreen?

    <p>15+</p> Signup and view all the answers

    What should you do if you notice a hazard in the workplace and your supervisor does not take action?

    <p>Fill out a Hazard Report Form and submit it to your supervisor and other relevant authorities</p> Signup and view all the answers

    What is the recommended time period to avoid working unprotected in the sun?

    <p>Between 11:00am – 3:00pm</p> Signup and view all the answers

    What type of information is NOT typically found on a Safety Data Sheet (SDS)?

    <p>Benefits of using the chemical</p> Signup and view all the answers

    What is the purpose of the Report of Injury, Illness or Dangerous Event Form?

    <p>To record work injuries, work-caused illnesses, and dangerous events</p> Signup and view all the answers

    What is the recommended attire for working in the sun?

    <p>Long-sleeved, close-weave shirts and trousers</p> Signup and view all the answers

    How can Safety Data Sheets (SDS) be accessed in the workplace?

    <p>Either hard copy or electronic versions like ChemAlert</p> Signup and view all the answers

    What is a common cause of fire in electrical equipment?

    <p>Poor electrical contacts, overloaded circuits, and chafed connecting cable insulation</p> Signup and view all the answers

    What is a potential hazard associated with contamination on a component in an oxygen system?

    <p>Fire or explosion</p> Signup and view all the answers

    What is permissible when aircraft fuel tanks are being serviced?

    <p>Using an approved explosion-proof lamp or torch</p> Signup and view all the answers

    Why is it important to open an oxygen valve slowly?

    <p>To reduce frictional heat</p> Signup and view all the answers

    Why are personal electrical equipment hazards a concern?

    <p>They can interfere with aircraft communication systems</p> Signup and view all the answers

    What is a characteristic of perfluoropolyethers (PFPEs) that makes them suitable for use in oxygen systems?

    <p>Non-oxidizing nature</p> Signup and view all the answers

    What is the primary reason for not using oil or grease on oxygen components?

    <p>They can explode when subject to low-pressure oxygen</p> Signup and view all the answers

    What type of fire hazard do fine particles of metal or filings pose?

    <p>Metal fire hazard</p> Signup and view all the answers

    Why is smoking not permitted in certain areas?

    <p>To prevent fires from igniting</p> Signup and view all the answers

    What is the typical pressure of commercial aircraft oxygen storage cylinders?

    <p>1850 psi</p> Signup and view all the answers

    What type of casting is typically involved in an aircraft metal fire?

    <p>Magnesium or aluminium casting</p> Signup and view all the answers

    What is a potential hazard associated with rapid opening of a cylinder valve in an oxygen system?

    <p>Fire or explosion</p> Signup and view all the answers

    What is the purpose of checking bag labels when using components in an oxygen system?

    <p>To ensure the component is oxygen-clean</p> Signup and view all the answers

    What is a benefit of using perfluoropolyethers (PFPEs) in oxygen systems?

    <p>Reduced friction and wear</p> Signup and view all the answers

    What is the primary purpose of painting door and emergency slide arming levers yellow?

    <p>To distinguish them from normal door-operating handles</p> Signup and view all the answers

    What type of hazard does a material pose when it meets the definition of hazardous material?

    <p>Substantial hazard to human health or the environment</p> Signup and view all the answers

    What is the purpose of a ground point on an aircraft?

    <p>To enable fueling operations and provide a ground connection in a hangar</p> Signup and view all the answers

    What is typically indicated by an anchor symbol on an aircraft structure?

    <p>A mooring or tie-down point</p> Signup and view all the answers

    What is the purpose of a clearly marked container for biological hazards?

    <p>To transport human specimens, viruses, bacteria, and human organs</p> Signup and view all the answers

    What is indicated by a specific symbol painted on an aircraft structure adjacent to the lifting attachment location?

    <p>A lifting point</p> Signup and view all the answers

    What type of material is typically discarded and meets the definition of hazardous material?

    <p>Hazardous waste</p> Signup and view all the answers

    What is the primary purpose of promoting safe and healthy working conditions when using hazardous materials and waste?

    <p>To prevent accidents and injuries</p> Signup and view all the answers

    What is the primary purpose of the gas detector in a fuel tank?

    <p>To register an alarm when the concentration of combustible vapors reaches an explosion hazard level</p> Signup and view all the answers

    What is the minimum number of team members required for a fuel tank entry task?

    <p>Three</p> Signup and view all the answers

    What is the purpose of the breathing equipment in a fuel tank entry task?

    <p>To sustain life in a toxic environment</p> Signup and view all the answers

    What is the responsibility of the Standby Person in a fuel tank entry task?

    <p>To ensure the safety of the Confined Space Entrant</p> Signup and view all the answers

    What should the Standby Person do if the primary air supply pressure falls below 85 psi?

    <p>Switch to emergency air and recall the Confined Space Entrant</p> Signup and view all the answers

    What is the purpose of the two filtered air supplies in a fuel tank entry task?

    <p>One for the Primary Rig and one for the Standby Rig</p> Signup and view all the answers

    What is the responsibility of the Confined Space Entrant in a fuel tank entry task?

    <p>To perform maintenance inside the fuel tank</p> Signup and view all the answers

    What is the purpose of the face mask respirator in a fuel tank entry task?

    <p>To filter the air supply for the Confined Space Entrant</p> Signup and view all the answers

    What is the primary hazard associated with excessive exposure to ultraviolet radiation?

    <p>Degenerative changes in cells, fibrous tissue, and blood vessels of skin</p> Signup and view all the answers

    What is the primary purpose of radium paint on aircraft instruments made prior to 1970?

    <p>To make components glow in the dark</p> Signup and view all the answers

    What is the primary danger of radium in the body?

    <p>It can cause bone degeneration and cancer</p> Signup and view all the answers

    What is the difference between internal and external radiation?

    <p>Internal radiation results from radioactive particles being absorbed into the body, while external radiation comes from being next to the source of radiation</p> Signup and view all the answers

    What is the purpose of aviation radar?

    <p>To measure the range and bearing of objects</p> Signup and view all the answers

    What is the recommended approach to maintenance in accordance with radiation and radar hazards?

    <p>Completing maintenance in accordance with AMM or OEM approved documentation</p> Signup and view all the answers

    What is the primary concern regarding radium sources on aircraft?

    <p>They can cause bone degeneration and cancer if ingested or inhaled</p> Signup and view all the answers

    What is the characteristic of old radium dials on aircraft instruments?

    <p>They are still radioactive but no longer glow</p> Signup and view all the answers

    What is the primary purpose of a fire risk assessment in the workplace?

    <p>To identify potential hazards and evaluate risks</p> Signup and view all the answers

    What are the two main groups of combustible fuels that can be identified in a fire hazard assessment?

    <p>Combustible fuels and highly combustible fuels</p> Signup and view all the answers

    What is the purpose of maintaining clear escape routes and exit doors in the workplace?

    <p>To provide a safe means of escape in case of an emergency</p> Signup and view all the answers

    What is the role of fire marshals in fire safety management?

    <p>To manage fire risks and take necessary actions</p> Signup and view all the answers

    What is the purpose of recording findings and actions taken in a fire risk assessment?

    <p>To keep the assessment under review and revise as necessary</p> Signup and view all the answers

    What is the purpose of providing information and training to employees on fire safety?

    <p>To ensure employees know how to prevent fires and respond in case of an emergency</p> Signup and view all the answers

    What is the primary reason for identifying sources of heat in a fire hazard assessment?

    <p>To prevent fires by keeping sources of heat and fuel apart</p> Signup and view all the answers

    What is the purpose of developing emergency procedures and drills in fire safety management?

    <p>To ensure employees know how to respond in case of a fire</p> Signup and view all the answers

    What is the correct technique for using a fire extinguisher on a liquid fire?

    <p>Point the jet at the inside edge of the container or on a nearby surface above the burning liquid</p> Signup and view all the answers

    What type of foam is required for fires involving alcohol and acetone?

    <p>Special foam (AFFF) containing water</p> Signup and view all the answers

    What is the primary purpose of wet chemical extinguishers?

    <p>To extinguish fires involving cooking oils and fats</p> Signup and view all the answers

    What is the color of the band on a vaporizing liquid extinguisher (Halotron)?

    <p>Red and yellow</p> Signup and view all the answers

    What is a major advantage of Halotron over dry powder extinguishers?

    <p>It leaves no residue</p> Signup and view all the answers

    What is the purpose of fire blankets?

    <p>To smother fires and block oxygen access</p> Signup and view all the answers

    What type of fires are wet chemical extinguishers suitable for?

    <p>Class A and F fires</p> Signup and view all the answers

    What is a characteristic of Halotron?

    <p>It is electrically nonconductive</p> Signup and view all the answers

    Study Notes

    Safety Precautions in Workshops

    • Stop and think before acting, and ask technical staff before starting an unfamiliar process
    • Ensure the right tool is used for the job, and ask for advice if uncertain
    • Keep work areas clean and tidy to prevent accidents and emergencies
    • Ensure materials and obstacles do not block walkways and emergency evacuation routes

    Hazards and Safety Precautions

    • Be aware of materials, solutions, and solvents that are unsafe when mixed or in contact with other substances
    • Use well-ventilated areas and fume extraction hoods when working with hazardous materials
    • Report any hazards or potential hazards to supervisors and take temporary precautions to protect yourself and others until the issue can be corrected

    Advanced Composite Materials Hazards and Safety Precautions

    • Report conditions to higher authority if you do not have the authority to correct an unsafe condition
    • Correct the problem at the source, rather than just correcting the unsafe condition
    • Hold on stop training if needed, and take temporary precautions to protect yourself and others

    Working in the Sun

    • Take precautions to avoid dehydration, headaches, sunstroke, and skin cancer when working in the sun
    • Drink water, wear protective clothing, and apply sunscreen with a minimum 15+ protection
    • Avoid working unprotected for long periods between 11:00am – 3:00pm

    Safety Data Sheets

    • SDS provide information about the dangers of using chemicals and substances, precautions for use, health effects, and relevant first aid procedures
    • Information must be available in hard copy or electronic versions like ChemAlert

    Reporting Hazards and Accidents in Aircraft Maintenance

    • Report hazards to your supervisor or Health & Safety Officer, and fill out a Hazard Report Form if action is not taken
    • Report of Injury, Illness or Dangerous Event Form is used to record all work injuries, work-caused illnesses, and dangerous events

    Oxygen Safety

    • Operate oxygen valves slowly to avoid raising temperatures to the point of ignition
    • Use oxygen-safe lubricants, such as Perfluoropolyethers (PFPEs), which have been tested for oxygen and other reactive chemical compatibility
    • Avoid using oil or grease on oxygen components that may come into contact with oxygen-enriched air

    Aircraft Oxygen Storage Cylinders

    • Commercial aircraft use gaseous oxygen stored in steel or steel alloy cylinders under high pressure (1850 psi)

    Electrical Equipment Hazards

    • Poor electrical contacts, overloaded circuits, and chafed connecting cable insulation can cause fires in electrical equipment
    • Inspection and maintenance must be thorough, and electrical equipment should be avoided in the vicinity of aircraft

    Naked Lights and Personal Electrical Equipment Hazards

    • Smoking is not permitted in the vicinity of aircraft, hangars, ramp areas, fuel installations, etc.
    • Personal electrical equipment such as mobiles, radios, and portable entertainment devices must not be used in the vicinity of aircraft or live aircraft equipment

    Metal Fire Hazards

    • Most metals will burn, and a typical aircraft metal fire involves magnesium or aluminium castings, such as wheels, overheated by emergency braking
    • Fine particles of metal or filings produced by machining in the hangar or workshop also pose a fire hazard

    Hazardous Materials and Biological Hazards

    • Hazardous materials are substances that pose a substantial hazard to human health or the environment when released or accidentally spilled.
    • Hazardous waste is any discarded material (liquid, solid, or gas) that meets the definition of hazardous material.
    • Biological hazards include human specimens, viruses, bacteria, and human organs, which are packed in clearly marked containers.

    Aircraft Symbols and Safety

    • The anchor symbol indicates a mooring/tie-down point, used to secure a parked aircraft against strong winds.
    • The jacking and shoring point symbol is located under struts of landing gear, wings, etc.
    • The earth point/ground point symbol is used during fueling operations and whenever an aircraft is in the hangar.
    • The lifting point symbol is used for lifting heavy components such as flaps, flight control surfaces, doors, and engine transport stands.

    Exposure Limits and Fuel Tank Safety

    • The Time-Weighted Average (TWA) is the average airborne concentration of a particular substance over a normal 8-hour workday for a 5-day week.
    • Safe exposure to fuel tank atmospheres without safety breathing equipment is time-weighted.
    • Fuel tank entry requires a team of three: the Confined Space Entrant, the Standby Person, and the Alternative Standby Person.
    • Breathing equipment is required if the fuel tank atmosphere contains toxic concentrations and oxygen levels are below safe levels.

    Radiation and Radar Hazards in Aviation

    • Ultraviolet radiation has a high photon energy range and can cause degenerative changes in cells, fibrous tissue, and blood vessels of the skin.
    • Radiation sources on aircraft include radium sources in aircraft instruments made prior to 1970, where radium paint was used to make components glow in the dark.
    • Radiation hazards are divided into internal radiation and external radiation.

    Fire Safety Management

    • Fire Safety Management should include maintenance of security procedures, prevention of combustible material storage, elimination of ignition sources, management of dust extractor systems, and provision of information and training.
    • A fire risk assessment helps determine the chances of fire occurring and the fire dangers posed to people in the workplace.
    • Identify potential hazards, decide who might be in danger, evaluate risks, and carry out necessary improvements.

    Fire Extinguishers

    • Wet Chemical Extinguishers are ideal for fires involving cooking oils and fats, and are also suitable for freely burning materials (Class A).
    • Vaporizing Liquid Extinguishers (Halotron) are used for Class A and E fires, and are safe for the environment.
    • Fire Blankets are designed to extinguish incipient fires and are used on Class F fires.

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    Description

    Learn about the hazards of electrical equipment in aviation, including causes of fires and necessary precautions to take when working near aircraft or servicing fuel tanks.

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