🔍 Key Concepts
• Fire hose construction – inner rubber lining, cotton or synthetic jacket, and how they are bonded together
• Effects of heat, petroleum products, and moisture on hose materials over time
• What "indefinitely maintain" implies about long‑term deterioration vs. a single, isolated hazard
đź’ Think About
• For each option, ask yourself: Does this condition actually damage some part of the hose (lining, jacket, or bond) over time, or is it harmless?
• Consider whether fire hoses are designed to be resistant to any of these conditions, or only to withstand them for limited exposure before damage occurs.
• Think about real‑world storage and use: Which of these conditions are you specifically trained to avoid when caring for fire hoses on board?
âś… Before You Answer
• Check how petroleum products (gasoline, oil) interact with rubber and hose bonding materials over time.
• Verify what heat does to rubber linings when hoses are stored near engines, boilers, or in direct sun for long periods.
• Confirm how moisture and poor drying after use affect the cotton or fabric jacket, especially regarding mildew and rot.