Electrical Equipment Safety in Aviation

Podcast

Play an AI-generated podcast conversation about this lesson

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?

To prevent accidents and ensure safety Signup and view all the answers

What is the main reason for accidents in the workplace?

Poor attitude and motivation Signup and view all the answers

What should you do in an emergency situation?

Take corrective action immediately Signup and view all the answers

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

To prevent health risks from dusts and fumes Signup and view all the answers

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

Ask technical staff for guidance Signup and view all the answers

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

To reduce the risk of accidents and emergencies Signup and view all the answers

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

Show the materials to technical staff to assess potential risks Signup and view all the answers

What is the primary purpose of fume extraction hoods?

To minimize exposure to hazardous fumes Signup and view all the answers

What is a characteristic of advanced composite materials?

They are stronger than individual component materials Signup and view all the answers

What is a common cause of accidents in the workplace?

Acting in a hurry or doing silly things Signup and view all the answers

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

To reduce the risk of accidents and emergencies Signup and view all the answers

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

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

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

15+ 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?

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

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

Between 11:00am – 3:00pm Signup and view all the answers

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

Benefits of using the chemical Signup and view all the answers

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

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

What is the recommended attire for working in the sun?

Long-sleeved, close-weave shirts and trousers Signup and view all the answers

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

Either hard copy or electronic versions like ChemAlert Signup and view all the answers

What is a common cause of fire in electrical equipment?

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

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

Fire or explosion Signup and view all the answers

What is permissible when aircraft fuel tanks are being serviced?

Using an approved explosion-proof lamp or torch Signup and view all the answers

Why is it important to open an oxygen valve slowly?

To reduce frictional heat Signup and view all the answers

Why are personal electrical equipment hazards a concern?

They can interfere with aircraft communication systems Signup and view all the answers

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

Non-oxidizing nature Signup and view all the answers

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

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

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

Metal fire hazard Signup and view all the answers

Why is smoking not permitted in certain areas?

To prevent fires from igniting Signup and view all the answers

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

1850 psi Signup and view all the answers

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

Magnesium or aluminium casting Signup and view all the answers

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

Fire or explosion Signup and view all the answers

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

To ensure the component is oxygen-clean Signup and view all the answers

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

Reduced friction and wear Signup and view all the answers

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

To distinguish them from normal door-operating handles Signup and view all the answers

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

Substantial hazard to human health or the environment Signup and view all the answers

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

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

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

A mooring or tie-down point Signup and view all the answers

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

To transport human specimens, viruses, bacteria, and human organs Signup and view all the answers

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

A lifting point Signup and view all the answers

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

Hazardous waste Signup and view all the answers

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

To prevent accidents and injuries Signup and view all the answers

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

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

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

Three Signup and view all the answers

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

To sustain life in a toxic environment Signup and view all the answers

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

To ensure the safety of the Confined Space Entrant Signup and view all the answers

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

Switch to emergency air and recall the Confined Space Entrant Signup and view all the answers

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

One for the Primary Rig and one for the Standby Rig Signup and view all the answers

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

To perform maintenance inside the fuel tank Signup and view all the answers

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

To filter the air supply for the Confined Space Entrant Signup and view all the answers

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

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

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

To make components glow in the dark Signup and view all the answers

What is the primary danger of radium in the body?

It can cause bone degeneration and cancer Signup and view all the answers

What is the difference between internal and external radiation?

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

What is the purpose of aviation radar?

To measure the range and bearing of objects Signup and view all the answers

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

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

What is the primary concern regarding radium sources on aircraft?

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

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

They are still radioactive but no longer glow Signup and view all the answers

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

To identify potential hazards and evaluate risks Signup and view all the answers

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

Combustible fuels and highly combustible fuels Signup and view all the answers

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

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

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

To manage fire risks and take necessary actions Signup and view all the answers

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

To keep the assessment under review and revise as necessary Signup and view all the answers

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

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

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

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

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

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

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

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

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

Special foam (AFFF) containing water Signup and view all the answers

What is the primary purpose of wet chemical extinguishers?

To extinguish fires involving cooking oils and fats Signup and view all the answers

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

Red and yellow Signup and view all the answers

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

It leaves no residue Signup and view all the answers

What is the purpose of fire blankets?

To smother fires and block oxygen access Signup and view all the answers

What type of fires are wet chemical extinguishers suitable for?

Class A and F fires Signup and view all the answers

What is a characteristic of Halotron?

It is electrically nonconductive 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.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

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.