Tertiary Variable Pumping System

Tertiary fire pumping systems in metro networks are deployed to serve dedicated fire zones such as underground tunnels, station platforms, electrical equipment rooms, signaling rooms, rolling stock depots, and maintenance workshops. These zones often require independent hydraulic control and reliable pressure delivery due to their structural complexity and risk profile.

Tertiary pumps provide localized pressure management, ensuring that hydrant and sprinkler systems in critical areas receive immediate and adequate water supply during emergencies. In long underground corridors, maintaining consistent pressure over extended pipeline distances is essential to prevent flow loss and ensure effective firefighting coverage.

These systems are equipped with automatic start mechanisms triggered by pressure drop detection, fire alarm integration, or manual override. Engine-driven standby pumps enhance reliability, especially in underground metro corridors where uninterrupted protection is mandatory.