Practice Test Geeks(313D) Residential Air Conditioning Systems Mechanic Certification Practice Test
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Safety and Regulations Flashcards

7 cards from real 313D practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Safety and Regulations flashcards as text

  1. What refrigerant container color indicates R-410A under the ARI (now AHRI) color-coding standard?

    Answer: Pink (rose)

    ARI/AHRI standard color coding assigns rose/pink to R-410A cylinders, helping technicians quickly identify refrigerant type.

  2. A technician is recovering refrigerant from a system with a charge of 15 lbs. Which EPA vacuum level must be achieved before opening the system for repair?

    Answer: The system size determines the required recovery vacuum from EPA tables

    EPA requires different recovery vacuum levels based on refrigerant type and system charge size; technicians must consult the EPA Section 608 tables for the applicable requirement.

  3. Which type of fire extinguisher is appropriate for an electrical fire involving an HVAC control panel?

    Answer: Class C

    Class C fire extinguishers are rated for energized electrical equipment fires because they use non-conductive agents.

  4. Under EPA regulations, what must a technician do if refrigerant accidentally vents to the atmosphere during service?

    Answer: Document the release in a service log

    While venting is prohibited, accidental releases do not require EPA reporting; however, technicians should document releases and take steps to prevent future occurrences.

  5. When installing refrigerant piping through a fire-rated wall, what is required by most building codes?

    Answer: A fire stop seal must be applied around the penetration

    Building codes require fire-stopping materials around any penetration through a fire-rated assembly to maintain the assembly's fire resistance rating.

  6. What does the acronym GWP stand for as it relates to refrigerant selection and environmental regulations?

    Answer: Global Warming Potential

    GWP (Global Warming Potential) measures a refrigerant's heat-trapping ability relative to CO₂ over 100 years and is used to evaluate environmental impact of refrigerant choices.

  7. According to ASHRAE 15, a machinery room must have a refrigerant detector that activates ventilation at what concentration threshold?

    Answer: The detector must activate at the TLV or lower

    ASHRAE 15 requires that the refrigerant detector activate emergency ventilation at or below the refrigerant's TLV (Threshold Limit Value) to protect occupants before dangerous concentrations are reached.