New York Low Pressure Boiler COF Practice

What type of system is designed to operate at 125 psig after street steam PSI and temperature are reduced by a PRV?

1. 100 psig system

2. 90 psig system

3. 125 psig system

4. 150 psig system

The correct answer is: 125 psig system

A system designed to operate at 125 psig is specifically intended to maintain that pressure as its optimal operating condition. The mention of reducing street steam pressure and temperature by a Pressure Reducing Valve (PRV) indicates that the system is engineered to handle the conversion from higher incoming pressures to a stable, lower pressure suitable for its intended operation. When a PRV is employed, it effectively regulates and lowers the pressure from the street steam system down to the desired working pressure, which, in this case, is 125 psig. Thus, the system is tailored to function efficiently at that pressure, ensuring safety, efficiency, and compatibility with the design specifications of the equipment it serves. In contrast, systems operating at pressures different from 125 psig (like 100 psig, 90 psig, or 150 psig) would not be suitable for this configuration, as they would be designed for specific conditions that differ from the stated 125 psig operation. Each of those systems would require adjustments to their safety and operational protocols to manage pressures either lower or higher than 125 psig effectively.