How frequently must outlets with valves be located along water lines in haulageways?

Outlets with valves along water lines in haulageways must be positioned at intervals of not more than 500 feet to ensure adequate access for maintenance and emergency use. This spacing is established to enable timely response in the event of an emergency, such as a fire or a need for quick access to water for dust control or other safety measures. Additionally, having outlets at this frequency ensures that water is readily available throughout the length of the haulageways, contributing to overall safety and operational efficiency.

The specific interval of 500 feet balances accessibility with practicality, adhering to guidelines that promote safe working environments in locations where water lines are essential. Having outlets closer together than this could lead to unnecessary resource expenditure and could also complicate the layout of the system. Thus, this standard helps maintain effective safety protocols in haulageways.