CHIEF ENGINEER Unit 18 Q1

1 / 5

Which of the following is NOT a precaution to be taken before releasing CO₂ into a machinery space?

B) Opening all ventilation dampers

D) Informing the bridge

C) Shutting down electrical equipment

A) Evacuating all personnel from the space

2 / 5

How long should one typically wait before considering re-entry into a machinery space after a CO₂ discharge?

C) 15 minutes

A) 5 minutes

D) 30 minutes

B) 10 minutes

3 / 5

If entry into the space is urgent before ventilation is complete, what safety measure must be taken?

A) Wear a self-contained breathing apparatus (SCBA)

B) Increase the CO₂ concentration

C) Keep the door open at all times

D) Turn on all lights

4 / 5

What is the primary reason for evacuating all personnel from the machinery space before CO₂ flooding?

A) To prevent CO₂ from escaping

C) To increase the effectiveness of CO₂

B) To avoid suffocation risks

D) To save energy

5 / 5

Which of the following is an essential step before re-entering a machinery space after a CO₂ release?

B) Ventilating the space

D) Sealing off the space completely

A) Turning on all machine

C) Igniting a flare to test for oxygen levels

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