System Testing Flashcards

What type of gas must NOT be used to perform a pressure leak test on an oxidizer (oxygen or nitrous oxide) medical gas pipeline?

Answer: Compressed oxygen

Oxygen itself must not be used for pressure testing because high-pressure oxygen in contact with system contaminants or lubricants creates a serious fire and explosion hazard.

An RMGA notices that a medical gas outlet station label reads 'O₂' but the outlet body is color-coded green and has a DISS connector for oxygen. What additional verification should be performed?

Answer: Cross-connection test and gas purity analysis at that outlet

Visual labeling and physical connector verification alone are insufficient; a cross-connection test and gas analysis must confirm the correct gas is actually being supplied to that outlet.

During medical gas system testing, which of the following alarm conditions must be tested and verified to function correctly?

Answer: Both master alarm panels and area alarm panels

NFPA 99 requires that both master alarm panels (at the source) and area alarm panels (at each zone) be tested and verified to annunciate correctly during system testing.

What is the significance of the 'blow-down' test performed on WAGD (Waste Anesthetic Gas Disposal) systems?

Answer: It verifies the system can achieve adequate flow and negative pressure to capture waste anesthetic gas

The blow-down test confirms that the WAGD system can generate sufficient negative pressure and flow to effectively capture and remove waste anesthetic gases from operating room equipment.

According to NFPA 99, after a repair is made to a medical gas pipeline, which tests must be repeated before returning the system to service?

Answer: Leak test and cross-connection test for the affected section

After any repair, NFPA 99 requires at minimum a pressure leak test and a cross-connection test on the affected portion of the system before returning it to service.

When conducting a source equipment test on a bulk liquid oxygen system, what condition triggers the activation of the reserve supply alarm?

Answer: When the primary supply reaches a predetermined low-level setpoint

The reserve supply alarm activates when the primary liquid oxygen supply drops to a pre-set low level, alerting staff to arrange resupply before the reserve is needed.

A verifier finds that a zone valve for the oxygen system is labeled 'Medical Air' during final verification walk-through. What is the correct action?

Answer: Immediately stop all testing and require correction before proceeding

Incorrect zone valve labeling is a safety-critical finding that must be corrected before testing continues, as mislabeled valves can result in shutting off the wrong gas during an emergency.