🔍 Key Concepts

• Air regeneration canisters on survival craft (used to remove CO₂ and add oxygen in enclosed lifeboats) • Manufacturer’s activation method for chemical canisters versus simple mechanical switches • Difference between actions that start a chemical reaction and actions that would damage or flood the canister

💭 Think About

• Think about how a chemical air regeneration canister is usually started: does it need water, tearing, flipping, or a control built into the unit? • Which of these actions would be clearly unsafe or harmful to the chemical contents of the canister in an enclosed lifeboat? • On a crowded, enclosed survival craft, what kind of activation step is most practical and least likely to be done by accident?

✅ Before You Answer

• Eliminate any option that would likely flood, contaminate, or damage the chemical medium inside the canister. • Ask whether the canister itself is usually directly manipulated, or whether it is typically part of a system with a simple control or switch. • Consider how survival craft equipment is designed: for quick, obvious activation under stress with minimal risk of misuse.