How is high pressure defined in the context of high-pressure boilers?

In the context of high-pressure boilers, high pressure is typically defined as any steam pressure greater than 15 psi. This definition aligns with industry standards and safety regulations that categorize boilers based on their operating pressures. When steam pressure exceeds 15 psi, the boiler is considered to operate under high pressure, which brings with it various requirements for design, construction, safety, and operational protocols to ensure safe and efficient functioning.

The significance of this threshold is highlighted in the rigorous testing, maintenance, and operational guidelines that apply to high-pressure boilers, which are distinct from those for low-pressure systems. As steam pressure increases, the risks associated with steam production and handling also amplify, necessitating enhanced safety measures and engineering practices. This is crucial for both the prevention of accidents and the efficient operation of such systems in industrial or commercial settings.