🔍 Key Concepts

• static electricity generation on tank vessels when handling petroleum cargoes • effects of liquid flow, spraying, and settling on charge buildup • differences between water discharge vs. petroleum movement in terms of static risk

💭 Think About

• For each option, ask yourself: does this involve movement, separation, or fine droplets of a hydrocarbon liquid that can promote charge separation? • Which process would most likely be specifically mentioned in tanker safety guidance (like loading, stripping, or tank washing) as a static hazard? • Is there any option that mainly involves water on deck rather than movement of petroleum inside systems or tanks?

✅ Before You Answer

• Identify which options involve petroleum in motion or in fine droplets (known high‑risk conditions for static buildup). • Check which process would cause mixing or separation of different phases (oil/water/solids), another known source of static charge. • Verify which single option involves an action that is primarily water-related on open deck instead of petroleum inside a confined system.