Under what wind speed should the inlet hazard distance be increased to 12 feet?

The correct choice, which indicates that the inlet hazard distance should be increased to 12 feet with wind speeds of 25 knots, is based on established safety protocols regarding operational conditions. At higher wind speeds, the potential for debris and turbulence increases significantly, thus heightening the risk of injury for personnel and damage to equipment.

Inlet hazard distance is a critical safety measure designed to protect both personnel on the ground and the operation itself by ensuring a safe zone around the inlet of a ventilation system or turbine. As the wind speed rises, the factors influencing the movement and aerodynamic behavior of objects within proximity also change.

At 25 knots, there is a recognized need to increase the inlet hazard distance to mitigate these risks effectively. This adjustment is informed by observational data and risk assessments that indicate the likelihood of hazardous conditions. Therefore, increasing the distance to 12 feet in such wind conditions reflects a proactive approach to safety management, ensuring that the area remains clear of personnel and obstacles that could be affected by powerful wind forces.

Understanding this principle is fundamental for operational safety, especially in environments where equipment is vulnerable to wind and other environmental factors.