What does "power plant" refer to?

The term "power plant" typically refers to a facility where power is generated, often through the use of boilers that produce steam or another form of vapor. In this context, the correct choice accurately defines a power plant as consisting of one or more boilers that generate steam or vapor at a pressure exceeding 103 kPa (15 psi). This distinction is important because it encompasses a broader range of operations that can occur within a power generation facility compared to options that specify additional conditions, such as pressure or temperature limits.

By focusing on the generation of steam or vapor at a specified minimum pressure, this definition aligns with the operational standards for many power plants that serve various energy generation formats, including those utilized in electricity production and industrial applications. This broad interpretation allows for flexibility in how power plants can operate, confirming the validity of this definition in the context of power engineering.

In contrast, other choices introduce additional constraints regarding the state of the liquid, the upper limits for pressure, or specific temperature thresholds, which narrow the definition and may not universally apply to all types of power plants.