RAC 2 Flashcards
Why is working safely important?
It prevents accidents and injuries, ensuring a safe working environment.
What is the Icebergs Theory of Accident?
It illustrates that visible accidents are just the tip of the iceberg, with many underlying factors contributing to safety issues.
What are direct costs of accidents?
- Wages during injury
- Cost of medical treatment
- Property damage
What are indirect costs of accidents?
- Working hours of other workers
- Loss of time of the injured
- Company reputation
- Employee morale
- Loss in productivity
- Stress to the injured
What is the role of DOLE in occupational safety?
The DOLE is the lead agency for the administration and enforcement of laws on occupational safety and health.
What is the legal basis for occupational safety in the Philippines?
- Presidential Decree No. 442
- Republic Act No. 11058
What should a beginner HVAC service technician know about tools?
They should understand how to install, operate, and troubleshoot air-conditioning and refrigeration equipment.
Name three essential tools for HVAC technicians.
- Reciprocating saw
- Cordless drill
- Vacuum pump
What is a utility knife used for in HVAC work?
Cutting various materials safely and effectively.
What are the recommended lengths for sheet metal shears?
12” long with a 3” bite.
What is the purpose of a multimeter in HVAC?
It is used for troubleshooting electronic components of the system.
True or False: Personal Protective Equipment (PPE) is a substitute for engineering controls.
False
What are some electrical hazards in HVAC work?
- Frayed and cut wires
- Open panels
- Defective plugs
What should technicians do before working on HVAC equipment?
Turn off the power at the circuit breaker.
Define ergonomic hazards in the context of HVAC work.
Hazards related to manual lifting, posture, repetitive motion, and over-exertion.
What types of chemicals are HVAC technicians exposed to?
- Oil
- Lubricant
- Degreaser
- Acids
What is the purpose of Lockout-Tagout procedures?
To safeguard employees from unexpected startup of machinery or release of hazardous energy.
What types of PPE are required for eye and face protection?
Protection against flying particles, molten materials, and harmful chemicals.
What is the importance of using PPE in HVAC and Refrigeration?
To protect workers from injury and exposure to harmful substances.
Fill in the blank: The employer shall ensure that each affected employee wears a protective helmet (hard hat) when working in areas where there is a potential for injury to the head from _______.
falling objects
What is the function of a valve core removal tool?
To evacuate and recover refrigerant during equipment installation or replacement.
What are pinch points in mechanical hazards?
Areas where rotating and fixed parts can create shearing, crushing, or abrading actions.
What should technicians wear to protect against chemical exposure?
Protective gear including gloves and goggles.
What does the acronym PPE stand for?
Personal Protective Equipment
What is a filter puller used for in HVAC?
To easily remove filters that are hard to access.
What is the primary purpose of Personal Protective Equipment (PPE) in the workplace?
To protect workers from exposure to the virus and contracting the disease.
What does PPE help prevent in addition to protecting the individual worker?
It helps prevent workers from unknowingly spreading the virus.
Who must understand their responsibilities regarding PPE?
Both employers and service technicians.
What is the recommended PPE for HVAC and Refrigeration technicians?
- Face shield or safety glasses
- Respirator with HEPA filter or N95 face mask
- Inner nitrile gloves
- Outer work gloves
- Work boots
- Hard hats
What do safety glasses protect against?
Debris, chemicals, and flying objects.
What is the purpose of a respirator with a HEPA filter or N95 face mask?
To protect from inhaling dangerous chemicals and contaminants.
What type of gloves should HVAC service technicians use?
Inner nitrile gloves and outer work gloves.
What should be readily available before conducting refrigeration and air conditioning servicing work?
Fire extinguishers.
What does the PASS protocol stand for in fire extinguisher use?
- Pull the pin
- Aim at the base of the fire
- Squeeze the handle
- Sweep from side to side
What does the RACE fire response protocol stand for?
- Rescue
- Alarm
- Contain
- Evacuate
What should you do if an electrical fire occurs?
- Disconnect power supply (if safe)
- Use a CO₂ or dry chemical extinguisher
- Do not use water
What is a Fire Risk Assessment (FRA)?
A systematic evaluation of fire hazards, risks, and control measures in a RAC servicing environment.
What are ignition sources that can cause fires in RAC systems?
- Electrical faults
- Hot work activities
- Static electricity
- Friction heat
What are considered fuel sources in fire risk assessments for RAC systems?
- Refrigerants
- Lubricants and oils
- Insulation materials
- Dust accumulation
What are the risk categories in fire risk assessments?
- High Risk
- Medium Risk
- Low Risk
What are some engineering controls to mitigate fire risks?
- Use non-flammable refrigerants
- Install automatic leak detectors
- Ensure proper ventilation
- Use explosion-proof electrical components
What is the purpose of fire emergency procedures?
To ensure detection, suppression, evacuation, and post-fire recovery.
What should be included in post-fire actions?
- Account for all personnel
- Report injuries
- Inspect fire damage
- Document the incident
Fill in the blank: A __________ is used to detect flammable refrigerant leaks.
[leak detection system]
True or False: It is safe to use water to extinguish flammable refrigerant fires.
False
What are some key safety precautions to prevent fire in RAC servicing?
- Perform leak tests
- Avoid open flames
- Follow grounding procedures
- Ensure proper ventilation
- Safely store refrigerants
What type of fire extinguisher should be used for oil or lubricant fires?
Foam or dry chemical.
What should be done to prepare for a fire emergency in the workplace?
- Train personnel in fire safety
- Have a fire emergency plan
- Identify flammable materials
What is the importance of a pre-operational checklist?
To ensure equipment’s safety features are functional.
What is the primary goal of using prescribed PPE?
To prevent/control workplace hazards.
