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MEP Systems in Healthcare Facilities Flashcards

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

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  1. At what minimum temperature must domestic hot water be stored in healthcare facilities to prevent Legionella pneumophila growth per ASHRAE 188?

    Answer: 140°F (60°C)

    ASHRAE 188 requires hot water storage at or above 140°F (60°C) to inhibit Legionella growth, as the bacteria cannot survive at this temperature.

  2. Which standard governs the installation, testing, and verification of medical gas and vacuum systems in healthcare facilities?

    Answer: NFPA 99

    NFPA 99 Health Care Facilities Code, Chapter 5, governs medical gas and vacuum system design, installation, testing, and verification in healthcare facilities.

  3. What is the required minimum slope for horizontal drain piping in healthcare facilities per standard plumbing codes?

    Answer: 1/4 inch per foot

    Standard plumbing codes require a minimum slope of 1/4 inch per foot for horizontal drain piping to ensure adequate gravity drainage and prevent standing water and biofilm accumulation.

  4. Which medical gas is distributed at significantly higher pipeline pressure (approximately 160–185 psig) compared to oxygen and medical air (50–55 psig)?

    Answer: Nitrogen

    Nitrogen is distributed at approximately 160–185 psig to power high-speed pneumatic surgical instruments, while most other medical gases operate at 50–55 psig.

  5. What type of testing is required by NFPA 99 before a newly installed medical gas system can be placed into clinical service?

    Answer: Level 1 performance verification testing by a Certified Medical Gas Verifier (CMGV)

    NFPA 99 requires Level 1 performance verification testing performed by a Certified Medical Gas Verifier (CMGV) before a new or modified medical gas system is placed into service.

  6. What is the primary function of a Building Automation System (BAS) in a healthcare facility?

    Answer: To monitor and control MEP systems, track alarms, and maintain required environmental conditions

    A BAS monitors and controls HVAC, electrical, plumbing, and other mechanical systems while tracking alarms and maintaining the precise environmental conditions required in each patient care area.

  7. During healthcare construction, what commissioning activity verifies that HVAC systems meet required airflow rates, static pressures, and temperature conditions before occupancy?

    Answer: Testing, Adjusting, and Balancing (TAB)

    Testing, Adjusting, and Balancing (TAB) physically measures and adjusts HVAC airflow rates, static pressures, and temperature differentials to confirm they match the engineer's design specifications.