Mount Crosby East Bank Flood Resilience CEI D&C
About the project
Pensar was engaged by Seqwater for the design and construction of the critical electrical infrastructure (CEI) renewal as part of the East Bank Flood Resilience Project. Pensar was awarded this project after completing a six-month Early Contractor Involvement (ECI) arrangement to undertake the design and project development.
Location
Brisbane, Queensland
Client & Duration
Seqwater
Apr 2024 - June 2026
Project Scope
- Complete all detailed design
- Replace transformers at the Water Treatment Plant (WTP)
- Replace 16 x high voltage motors at the Recycled Water Pump Station (RWPS)
- Replace high voltage main switchboard at RWPS
- Construct new spares shed
- Construct new HV conduit bank and pits for cable route between substation and RWPS
- Monitoring and control system (MCS) works
- Strengthening works to existing RWPS building
Challenges
- The heritage listed building has poor flood immunity resulting in risk of system failure and prolonged loss of water supply. To combat this, operational risks addressed include, connecting the RWPS to the new 11kV Energex substation, delivering new pump motors plus spares and providing various improvements in flood immunity
- Careful considerations required due to the building being heritage listed at approximately 130 years old
- Maintaining operation of the most critical asset in the Southeast Queensland water grid throughout duration of works.
Achievements
- Pensar identified some scope items that could be altered from the Principal Project Requirements to provide a better outcome for the client, such as the replacement of the HV switchgear in lieu of refurbishment
- Our team utilised a full 3D model
- We conducted early workshops around constructability and undertook detailed site investigations to ensure constructability aspects were verified
- Close engagement with Seqwater and Energex to ensure the project is completed on time as per agreed program
- Pensar’s proposal to replace the switchgear was accepted and allowed the asset to remain operational as the new equipment could be installed and commissioned while the existing board was still in service.