APA appointed Nacap to provide expert construction guidance of emergency repair the DN250 Roma to Brisbane Gas Pipeline Queensland.
The project included the section repair (80m approx.) of the 438km long, DN250 (10”) Roma to Brisbane pipeline. The repair site was on the Toowoomba ridge and was caused by a landslide due to heavy rains.
The pipeline provides a strategic link between Roma and Brisbane and forms part of the dual high pressure system with the adjacent DN400 pipeline. It supply’s major customers such as CS Energy’s Swanbank Power Station, BP’s Bulwer Island Refinery, the South West Queensland Producers, energy retailers AGL, Origin Energy and Alinta Energy.
Nacap responded with the mobilisation of key personnel and key pipeline specialist equipment in 24 hours. The works were completed safely with the strong emphasis to minimise supply downtime. The crews worked meticulously to ensure the stability of the slope was not compromised or to impact the operating adjacent DN400 line.
Nacap provided strategic direction in relation to the safe site set out, including excavation around live assets, and guidance for non-destructive testing. A critical risk was to ensure that pipe stresses were removed prior to the commencement of repair work. Nacap surveyed and executed the bending of the replacement pipe section to ensure that the new pipe was installed safely.
It was acknowledged by the site team that the specific constraints of this repair project required and interactive “teamwork” focus. Nacap worked as one with APA’s management and engineering, support construction crew / specialist subcontractors to achieve safe outcomes to all who participated and the pipeline was put back in service without delay.