CHS Hyperbaric Equipment Operation & Safety 2

Question 1

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

Accepted Answer

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

Answer

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

Question 2

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

Accepted Answer

1.6 ATA

Answer

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

Question 3

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

Accepted Answer

Oxygen-cleaned stainless steel globe valve

Answer

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

Question 4

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

Accepted Answer

Identify and resolve the source of overpressure before continuing

Answer

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

Question 5

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

Accepted Answer

To detect elevated oxygen concentrations that increase fire risk

Answer

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

(CHS) Certified Hyperbaric Specialist Practice Test

(CHS) Certified Hyperbaric Specialist Practice Test

CHS Hyperbaric Equipment Operation & Safety 2