What classification is given to a boiler that operates at pressures above 100 kPa?

A boiler that operates at pressures above 100 kPa is classified as a high-pressure boiler. This classification is significant because it pertains to the design, materials, and safety considerations of the boiler. High-pressure boilers are typically used in applications that require greater heat and energy output, often in power generation and large-scale industrial processes.

When a boiler operates above this pressure threshold, it must meet strict regulatory standards to ensure safe operation. These standards dictate the type of materials used, the design of safety systems such as pressure relief valves, and maintenance protocols.

Conversely, low-pressure boilers are defined as having operating pressures below this level, and they are generally associated with lighter applications such as heating buildings. The terms externallty-fired and packaged boilers relate to the configuration and construction of the boiler rather than the pressure class, making them less relevant to the specific classification based on operating pressure. Understanding these classifications helps ensure proper boiler operation, maintenance, and compliance with applicable safety codes.