How high must steam safety or pressure relief valves terminate above the floor?

The requirement for steam safety or pressure relief valves to terminate between 6 to 12 inches above the floor is rooted in safety and efficiency considerations. When these valves discharge steam, the elevation ensures that the steam disperses upward and away from any personnel or equipment in the vicinity.

If the valves were too close to the floor, there would be a risk of steam buildup in an area where people might be present or where equipment could be affected. By terminating within this specified height range, the steam can dissipate quickly and safely into the atmosphere, minimizing the risk of burns or other hazards.

This design also accounts for practical considerations in the layout of equipment and ensures accessibility for maintenance and inspection without compromising safety. Adhering to these specifications is crucial for compliance with safety regulations and promoting a safe working environment.