Container appurtenances refer to what?

Container appurtenances refer specifically to devices that are connected to openings in tanks and other containers. These appurtenances can include various fittings, valves, and connections that facilitate the handling, control, monitoring, and safety of liquids or gases stored within the containers. Understanding the function and types of these devices is crucial for fire investigation technicians, as they help in assessing the potential hazards associated with storage containers, especially in fire-related incidents. This ensures that investigations are comprehensive and consider all aspects of containment and safety.

The other choices mention tools and devices relevant to different contexts, such as measuring tank pressure, residential safety devices, and components of sprinkler systems, but they do not accurately describe the scope of container appurtenances, which are focused specifically on openings and connections pertaining to tanks and containers.