Smoke extraction and smoke control ventilation systems (SDU)

We review layout solutions, room heights, evacuation routes and existing engineering systems. We define smoke extraction and pressurization zones, determine duct routes and fan room locations.

We calculate airflow rates, pressure losses and required pressure values. We select fans, dampers and ducts, prepare automation schemes and equipment specifications, and formalize design documentation for coordination with the customer and supervisory authorities.

We install smoke extraction and pressurization units, lay shafts and ducts with fire protection and thermal insulation. Suspension systems, inspection sections and route marking are organized based on fire resistance and service requirements.

We install smoke and fire dampers in corridors, halls and shafts, and mount SDU control panels. We route control and signaling cables, integrate the system with fire alarm, BMS and dispatching, and configure logic links and interlocks for emergency signals.

We tune operating modes for fans and dampers and verify start-up scenarios by the “Fire” signal. We measure airflow velocity and pressure at control points, check operation under shutdown and backup power conditions, and document test protocols and commissioning reports.

We prepare as-built documentation, automation diagrams, route plans and operating instructions. We train technical and duty staff on system operation, actions during a fire and regular checks.

We perform scheduled inspections and testing of automation and equipment, and upgrade components if needed. We help with preparation for supervisory inspections and propose solutions to modernize and expand SDU as the facility evolves.