What is the recommended minimum size for a decompression cylinder filled to 3000 psi?

Prepare for the SSI Decompression Diving Test with challenging multiple choice questions, detailed explanations, and in-depth study materials. Boost your chances of success!

The correct choice is based on the guidelines for selecting a decompression cylinder, which is an essential aspect of diving safety. A decompression cylinder is used to provide a backup source of gas during ascent or emergency situations, and it is crucial that it has adequate capacity to meet the demands of the dive.

In this context, the recommended minimum size for a decompression cylinder filled to 3000 psi is often set to ensure that divers have sufficient gas available for safe decompression. The S40 cylinder is commonly recognized in diving practices as being able to hold enough gas while remaining manageable in terms of weight and size for divers.

This choice balances the need for adequate gas volume with considerations like the diver’s ability to carry the cylinder comfortably and use it effectively during decompression stops. A smaller cylinder might not provide enough gas, which could lead to unsafe situations, while larger sizes may introduce unnecessary weight and complexity. Thus, the S40 strikes the right balance for safety and practicality in decompression scenarios.

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