🔍 Key Concepts

• Insulating flanges are used where metal cargo lines connect ship and shore equipment • How static electricity can build up and discharge during liquid cargo transfer • Which hazards are controlled by procedures and equipment versus crew behavior (like smoking)

💭 Think About

• Ask yourself: When would you need to electrically separate (insulate) the ship from shore or different piping systems? • Which of these choices involves an electrical path and possible sparks between metal systems? • Which hazards on the list are mainly handled by operational rules (like no‑smoking policies) rather than by installing special fittings in the cargo line?

✅ Before You Answer

• Identify which option is directly related to electrical continuity/charge buildup in metal pipelines and equipment • Eliminate options that are mainly about pressure control or crew discipline rather than electrical hazards • Think about what could cause a spark at the ship–shore connection during cargo transfer and which answer fits that scenario