FREE MRSO Cryogen Safety Questions and Answers

Question 1

What is the primary and most immediate danger to personnel inside the magnet room during a quench?

Accepted Answer

Asphyxiation due to oxygen displacement

Answer

Frostbite from contact with cold gas

Answer

Impact from a high-pressure jet of liquid helium

Answer

Injury from the sudden loss of the magnetic field

Question 2

What is the minimum required Personal Protective Equipment (PPE) when handling or transferring liquid cryogens?

Accepted Answer

Insulated gloves, a face shield/goggles, and closed-toe shoes

Answer

A standard lab coat and safety glasses

Answer

A fire-retardant suit and steel-toed boots

Answer

A simple dust mask and latex gloves

Question 3

Where is the proper location for storing a dewar of liquid helium?

Accepted Answer

In a well-ventilated area, away from patient care areas

Answer

In a sealed, airtight room to prevent evaporation

Answer

Directly inside the magnet room (Zone IV) for easy access

Answer

In a standard refrigerated unit to keep it extra cold

Question 4

An oxygen (O2) monitor in the magnet room alarms, showing a level of 18.5%. What is the appropriate first action?

Accepted Answer

Immediately evacuate all personnel from the magnet room

Answer

Reset the alarm and continue scanning while observing the patient

Answer

Call the engineering department to check the monitor's calibration

Answer

Prop open the magnet room door to let in fresh air

Question 5

What is the primary function of the quench pipe or vent?

Accepted Answer

To safely vent helium gas outside the building during a quench

Answer

To act as a port for refilling the magnet with liquid helium

Answer

To provide a pressure reading of the cryostat to the operator console

Answer

To circulate cryogen gas to cool the magnet room's air conditioning system

Question 6

In the event of a small liquid nitrogen spill on the floor in a well-ventilated service area, what is the correct procedure?

Accepted Answer

Evacuate the immediate area and allow it to evaporate naturally

Answer

Immediately pour warm water on the spill to make it evaporate faster

Answer

Cover the spill with a thick blanket to contain the cold

Answer

Use a standard mop and bucket to clean it up immediately