🔍 Key Concepts

• Bilge pits / bilge wells on drilling rigs and what they are used for • Typical methods used to monitor liquid levels in enclosed spaces (alarms vs. gauges vs. control units) • Difference between a sensor/switch and an indicator/control unit

💭 Think About

• Ask yourself: on an offshore drilling unit, would you expect the bilge pit levels to be constantly visually checked, or automatically monitored with some form of sensor? • Which of these options sounds like a specific type of level-detection device rather than a general alarm level (high/low) or a broader control system? • Consider which answer most directly refers to a device installed at the bilge pit itself to detect the presence/height of water.

✅ Before You Answer

• Verify which choice names an actual field device located in the bilge pit rather than a remote indication or control unit. • Check whether the option you’re leaning toward would reasonably provide automatic detection without needing someone to be physically present. • Eliminate any options that mainly describe the result (e.g., alarms) instead of the sensor that detects the water level.