🔍 Key Concepts

• Acetylene cylinder construction and why acetylene is unstable at high pressure • Role of porous filler material and acetone inside the cylinder • How explosion risk is controlled in high‑energy fuel gas storage

💭 Think About

• Think about what makes acetylene particularly dangerous compared to other gases when it is compressed by itself. • Ask yourself: is the filler material supposed to change the chemical nature of acetylene, or to change the way it is stored physically? • Compare the ideas of preventing an explosion, neutralizing a gas, starting a chemical reaction, and resisting fire: which one matches the primary engineering purpose of the porous filler?

✅ Before You Answer

• Verify whether acetylene is stored as a free compressed gas or dissolved in acetone in a porous mass. • Check if the filler material is intended to chemically react with gases, or to distribute/absorb them to prevent dangerous decomposition. • Confirm whether "fire resistance" is the main goal inside the cylinder, or if the priority is controlling pressure and decomposition of acetylene.