In high-flow discharge operations, what does line discipline refer to?

• A. Keeping lines at maximum pressure
• B. Assigning lines to individuals
• C. Keeping hoses/lines organized and under control to prevent movement and injury
• D. Painting lines for visibility

Answer: (C)

Line discipline means keeping hoses and lines organized and under control so they don’t move unpredictably, whip under high flow, or become trip hazards. In high-flow discharge, large volumes and pressure make unmanaged lines dangerous: loose or tangled hoses can spring back, kink, or shift and strike crew members, block access, or slow down operations. Practicing line discipline involves securing lines, routing them to clear paths, using clamps and fittings to keep connections tight, maintaining proper slack and gentle bends, and ensuring everyone knows where lines run and who handles them. This safety-focused organization helps prevent injuries and keeps the operation efficient.

Other options miss the point: one focuses on maintaining maximum pressure, which is about system pressure rather than how lines are managed; another is about who is assigned to lines—responsibility rather than safe handling; and painting lines for visibility is helpful but does not address keeping lines controlled and safe during discharge.