🔍 Key Concepts

• 46 CFR fire protection requirements for engine rooms on inspected vessels • Differences between hose construction materials and nozzle/applicator types • Why certain equipment might be unsafe or easily damaged in a high‑heat machinery space

💭 Think About

• Think about which item could be most vulnerable to heat, oil, and mechanical damage in an engine room environment. • Ask yourself which devices are specifically mentioned in Coast Guard regulations as acceptable fixed or semi‑portable systems in machinery spaces. • Consider which choice sounds like a general description of construction, versus named firefighting appliances that are commonly approved for machinery spaces.

✅ Before You Answer

• Check 46 CFR fire protection sections for machinery/engine space firefighting equipment and see which items are explicitly listed as acceptable. • Identify which item depends on a material that can melt, blister, or fail when exposed to engine‑room temperatures and fuel/oil contamination. • Confirm whether CO₂ systems, combination nozzles, and applicators are normally specified for use in machinery spaces under 46 CFR.