Upper Crescent Wastewater Pumping Station

Originally constructed in the 1970s, Upper Crescent Wastewater Pumping Station required significant capacity and robustness improvements. Following a drainage area study, GRAHAM developed an innovative solution within the constrained footprint of the existing asset. The project delivered a new 245 l/s terminal pumping station with substantial storm storage, dramatically improving service
reliability whilst working in a challenging residential location.

We developed an innovative design that provided a new 245 l/s terminal pumping station with 687,000 litres of storm storage on the existing site. The solution incorporated three pumps capable of passing forward flow of 245 l/s, operating in duty/assist/standby mode, a screening facility for overflow to storm pumping station, and a new Motor Control Centre (MCC) and Generator.
The project was delivered in two phases.

Phase 1 involved preliminary works including removal of existing NIE overhead cables, installation of a new NIE transformer and Motor Control Centre, installation of a containerised generator, and demolition of the existing generator building.

Phase 2 encompassed the civil and structural construction and MEICA installation of the new underground wastewater pumping station. GRAHAM’s innovative approach to construction phasing, temporary works design, stakeholder engagement and client collaboration ensured this challenging project, which included exceptionally deep excavation in restricted conditions, was completed safely and efficiently.