RAC 2

Question 2

Why is working safely important?

Answer 2

It prevents accidents and injuries, ensuring a safe working environment.

Question 3

What is the Icebergs Theory of Accident?

Answer 3

It illustrates that visible accidents are just the tip of the iceberg, with many underlying factors contributing to safety issues.

Question 4

What are direct costs of accidents?

Answer 4

• Wages during injury
• Cost of medical treatment
• Property damage

Question 5

What are indirect costs of accidents?

Answer 5

• Working hours of other workers
• Loss of time of the injured
• Company reputation
• Employee morale
• Loss in productivity
• Stress to the injured

Question 6

What is the role of DOLE in occupational safety?

Answer 6

The DOLE is the lead agency for the administration and enforcement of laws on occupational safety and health.

Question 7

What is the legal basis for occupational safety in the Philippines?

Answer 7

• Presidential Decree No. 442
• Republic Act No. 11058

Question 8

What should a beginner HVAC service technician know about tools?

Answer 8

They should understand how to install, operate, and troubleshoot air-conditioning and refrigeration equipment.

Question 9

Name three essential tools for HVAC technicians.

Answer 9

• Reciprocating saw
• Cordless drill
• Vacuum pump

Question 10

What is a utility knife used for in HVAC work?

Answer 10

Cutting various materials safely and effectively.

Question 11

What are the recommended lengths for sheet metal shears?

Answer 11

12” long with a 3” bite.

Question 12

What is the purpose of a multimeter in HVAC?

Answer 12

It is used for troubleshooting electronic components of the system.

Question 13

True or False: Personal Protective Equipment (PPE) is a substitute for engineering controls.

Answer 13

False

Question 14

What are some electrical hazards in HVAC work?

Answer 14

• Frayed and cut wires
• Open panels
• Defective plugs

Question 15

What should technicians do before working on HVAC equipment?

Answer 15

Turn off the power at the circuit breaker.

Question 16

Define ergonomic hazards in the context of HVAC work.

Answer 16

Hazards related to manual lifting, posture, repetitive motion, and over-exertion.

Question 17

What types of chemicals are HVAC technicians exposed to?

Answer 17

• Oil
• Lubricant
• Degreaser
• Acids

Question 18

What is the purpose of Lockout-Tagout procedures?

Answer 18

To safeguard employees from unexpected startup of machinery or release of hazardous energy.

Question 19

What types of PPE are required for eye and face protection?

Answer 19

Protection against flying particles, molten materials, and harmful chemicals.

Question 20

What is the importance of using PPE in HVAC and Refrigeration?

Answer 20

To protect workers from injury and exposure to harmful substances.

Question 21

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 _______.

Answer 21

falling objects

Question 22

What is the function of a valve core removal tool?

Answer 22

To evacuate and recover refrigerant during equipment installation or replacement.

Question 23

What are pinch points in mechanical hazards?

Answer 23

Areas where rotating and fixed parts can create shearing, crushing, or abrading actions.

Question 24

What should technicians wear to protect against chemical exposure?

Answer 24

Protective gear including gloves and goggles.

Question 25

What does the acronym PPE stand for?

Answer 25

Personal Protective Equipment

Question 26

What is a filter puller used for in HVAC?

Answer 26

To easily remove filters that are hard to access.

Question 27

What is the primary purpose of Personal Protective Equipment (PPE) in the workplace?

Answer 27

To protect workers from exposure to the virus and contracting the disease.

Question 28

What does PPE help prevent in addition to protecting the individual worker?

Answer 28

It helps prevent workers from unknowingly spreading the virus.

Question 29

Who must understand their responsibilities regarding PPE?

Answer 29

Both employers and service technicians.

Question 30

What is the recommended PPE for HVAC and Refrigeration technicians?

Answer 30

* Face shield or safety glasses * Respirator with HEPA filter or N95 face mask * Inner nitrile gloves * Outer work gloves * Work boots * Hard hats

Question 31

What do safety glasses protect against?

Answer 31

Debris, chemicals, and flying objects.

Question 32

What is the purpose of a respirator with a HEPA filter or N95 face mask?

Answer 32

To protect from inhaling dangerous chemicals and contaminants.

Question 33

What type of gloves should HVAC service technicians use?

Answer 33

Inner nitrile gloves and outer work gloves.

Question 34

What should be readily available before conducting refrigeration and air conditioning servicing work?

Answer 34

Fire extinguishers.

Question 35

What does the PASS protocol stand for in fire extinguisher use?

Answer 35

* Pull the pin * Aim at the base of the fire * Squeeze the handle * Sweep from side to side

Question 36

What does the RACE fire response protocol stand for?

Answer 36

* Rescue * Alarm * Contain * Evacuate

Question 37

What should you do if an electrical fire occurs?

Answer 37

* Disconnect power supply (if safe) * Use a CO₂ or dry chemical extinguisher * Do not use water

Question 38

What is a Fire Risk Assessment (FRA)?

Answer 38

A systematic evaluation of fire hazards, risks, and control measures in a RAC servicing environment.

Question 39

What are ignition sources that can cause fires in RAC systems?

Answer 39

* Electrical faults * Hot work activities * Static electricity * Friction heat

Question 40

What are considered fuel sources in fire risk assessments for RAC systems?

Answer 40

* Refrigerants * Lubricants and oils * Insulation materials * Dust accumulation

Question 41

What are the risk categories in fire risk assessments?

Answer 41

* High Risk * Medium Risk * Low Risk

Question 42

What are some engineering controls to mitigate fire risks?

Answer 42

* Use non-flammable refrigerants * Install automatic leak detectors * Ensure proper ventilation * Use explosion-proof electrical components

Question 43

What is the purpose of fire emergency procedures?

Answer 43

To ensure detection, suppression, evacuation, and post-fire recovery.

Question 44

What should be included in post-fire actions?

Answer 44

* Account for all personnel * Report injuries * Inspect fire damage * Document the incident

Question 45

Fill in the blank: A __________ is used to detect flammable refrigerant leaks.

Answer 45

[leak detection system]

Question 46

True or False: It is safe to use water to extinguish flammable refrigerant fires.

Answer 46

False

Question 47

What are some key safety precautions to prevent fire in RAC servicing?

Answer 47

* Perform leak tests * Avoid open flames * Follow grounding procedures * Ensure proper ventilation * Safely store refrigerants

Question 48

What type of fire extinguisher should be used for oil or lubricant fires?

Answer 48

Foam or dry chemical.

Question 49

What should be done to prepare for a fire emergency in the workplace?

Answer 49

* Train personnel in fire safety * Have a fire emergency plan * Identify flammable materials

Question 50

What is the importance of a pre-operational checklist?

Answer 50

To ensure equipment’s safety features are functional.

Question 51

What is the primary goal of using prescribed PPE?

Answer 51

To prevent/control workplace hazards.