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Hyperbaric Equipment Operation & Safety Flashcards

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

Read the first 7 Hyperbaric Equipment Operation & Safety flashcards as text

  1. What is the minimum required wall thickness for a monoplace hyperbaric chamber rated at 3 ATA working pressure?

    Answer: Determined by ASME PVHO-1 calculations based on diameter and material

    ASME PVHO-1 requires wall thickness to be calculated based on the vessel's diameter, material yield strength, and maximum allowable working pressure.

  2. During a hyperbaric treatment, the oxygen partial pressure (PO2) inside a multiplace chamber should not exceed which value to minimize oxygen toxicity risk?

    Answer: 1.6 ATA

    A PO2 greater than 1.6 ATA significantly increases the risk of central nervous system oxygen toxicity during hyperbaric treatments.

  3. Which type of valve is preferred at the oxygen inlet of a hyperbaric chamber due to its oxygen-compatible construction?

    Answer: Oxygen-cleaned stainless steel globe valve

    Oxygen service requires valves that are oxygen-cleaned, use compatible materials, and are rated for high-pressure oxygen to prevent ignition hazards.

  4. A chamber operator notices the pressure relief valve activating repeatedly during treatment. The FIRST action should be to:

    Answer: Identify and resolve the source of overpressure before continuing

    Repeated relief valve activation indicates a control or supply problem that must be diagnosed and corrected before safe operation can continue.

  5. What is the primary purpose of an oxygen monitor inside a multiplace hyperbaric chamber?

    Answer: To detect elevated oxygen concentrations that increase fire risk

    Ambient oxygen monitors detect dangerous enrichment of the chamber atmosphere, which dramatically increases the risk of fire or explosion.

  6. The inside observer in a multiplace chamber must be trained to perform which critical task independently?

    Answer: Emergency egress and manual decompression procedures

    Inside observers must be capable of initiating emergency decompression and guiding patient egress in case of outside crew incapacitation.

  7. Which NFPA standard specifically addresses fire protection for hyperbaric facilities?

    Answer: NFPA 99

    NFPA 99 (Health Care Facilities Code) contains specific requirements for hyperbaric facilities including construction, electrical, and fire safety.