If a cryogenic leak occurs in a confined space, the correct action is to

If a cryogenic leak occurs in a confined space, the correct action is to

• A. Re-enter with PPE to stop the leak
• B. Ignore and carry on
• C. Open more windows and re-enter
• D. Evacuate area and ventilate; do not re-enter until safe

Answer: (D)

When a cryogenic leak happens in a confined space, the immediate danger is that the very cold gas can push out the breathable air, creating an oxygen-deficient, potentially life-threatening environment. The safest steps are to get people out of the area and start ventilating to dilute and remove the gas so the air quality can recover. Re-entry is not safe until the atmosphere is tested and confirmed to be within safe, breathable levels and the leak has been isolated by trained personnel. Simply trying to stop the leak from inside or opening more windows does not guarantee safe air; the priority is to remove people from danger, ventilate, and verify a safe environment before anyone returns.

When a cryogenic leak happens in a confined space, the immediate danger is that the very cold gas can push out the breathable air, creating an oxygen-deficient, potentially life-threatening environment. The safest steps are to get people out of the area and start ventilating to dilute and remove the gas so the air quality can recover. Re-entry is not safe until the atmosphere is tested and confirmed to be within safe, breathable levels and the leak has been isolated by trained personnel. Simply trying to stop the leak from inside or opening more windows does not guarantee safe air; the priority is to remove people from danger, ventilate, and verify a safe environment before anyone returns.