As the senior engineer of a vessel of more than 1600 gross tons on an international voyage, you have just activated the CO2 release handle for the engine room to extinguish a fire. How would you direct the emergency team to re-enter the engine room?

Correct Answer: Option B — Wait until there are no signs of smoke or heat, then, with the team dressed in firefighting gear and SCBA, approach the engine room door. Crack the door open with a charged fire hose at the ready and advance, if no fire is detected.

Re-entry after a CO2 discharge requires extreme caution to prevent re-ignition. Personnel must wait for the space to cool, then approach with SCBA and a charged hose. Cracking the door allows for a controlled assessment of the atmosphere and temperature before fully committing the firefighting team to the space.