How do Mechanical Inspection Bureau rules classify steam boilers?

The classification of steam boilers as high pressure is defined by regulations set by the Mechanical Inspection Bureau. According to these guidelines, a steam boiler is considered high pressure if it has a rating exceeding 15 psi. This definition is crucial for ensuring that operators understand the safety requirements, operational standards, and maintenance protocols that must be followed for high-pressure systems.

Boilers that operate above this threshold require specific safety measures because the risks associated with high-pressure steam, such as equipment failure and hazardous steam releases, increase significantly. Understanding this classification helps ensure compliance with safety regulations and protects both personnel and property by enforcing stricter operational practices for high-pressure steam systems.