Helipad Drainage & Firefighting Provisions

A helipad stores a lot of energy in a small footprint: a fuelled aircraft, a hot engine, and sometimes a patient being moved in a hurry. Drainage and firefighting provisions are what limit the consequence of a spill or a fire, and they are built into the pad, not added later. NLS Contractors prices them as a works package covering installation, testing and handover.

Drainage is the quieter half. The pad surface is graded to drain, and fuel that spills on it should not run toward the building or into the storm network unchecked. The drainage scope therefore includes surface channels or gullies, an interceptor or containment arrangement for fuel as the design shows, and an outfall to the approved point. On a ground-level pad this is a civil question of falls and pipework. On a rooftop pad it is also a building services question, because the drainage has to be routed through the building, and the roof structure must be protected from spilled fuel.

Firefighting provisions depend on what the owner and Civil Defense require. NFPA 418 covers heliports, and ICAO Annex 14 Volume II gives rescue and firefighting guidance. The provision level is not set by the contractor. It may be as simple as extinguishers and hose reels at the pad, or it may include hydrants on a fire main, a foam provision, and a store for rescue equipment near the landing area. The offer follows the approved fire drawings and lists each item by type and quantity.

Rooftop specifics need care. A fire main connection has to reach the roof, with isolating valves and pressure suited to the hose reels or hydrants served. The roof structure under the pad is protected where the design requires it, and routes from the pad to the stair and the emergency department stay clear.

Testing is recorded. Drainage lines are water or air tested, and fire mains are pressure tested and flushed. Civil Defense inspects the completed provisions, and the contractor supports that inspection with drawings, test records and equipment datasheets.

Handover includes drainage and fire drawings, pressure test records, Civil Defense inspection support documents and as-builts. To price it, send the fire and drainage drawings, the specification clauses, the Civil Defense comments and the BOQ. Price and lead time depend on the scope, and the offer states both.