UV Cured-In-Place Pipe Relining at One of Australia's Busiest Public Hospitals
Hydro Logic was engaged to rehabilitate 8 metres of deteriorated oviform sewer pipe at Royal Prince Alfred Hospital as part of a major facility upgrade program. Sydney Water required the existing asset to be upgraded to meet future service requirements. Due to the extent of deterioration and the operational sensitivity of the site, a UV cured-in-place relining system was specified to restore and protect the asset without the need for excavation or full replacement. All works were planned and executed entirely after hours to ensure zero disruption to one of Australia's busiest public hospitals.
After-Hours Delivery in a Live Hospital Environment
Delivering this project required precise coordination across multiple constraints simultaneously. The sewer required a full bypass for two days while rehabilitation works were carried out. Every aspect of the program, including mobilisation, surface preparation, product installation and demobilisation, was conducted outside of normal hospital operating hours. This was non-negotiable. Royal Prince Alfred Hospital operates continuously and any disruption to services, access or the facility upgrade program was not acceptable.
Adding further complexity, the specialist UV relining product required for the oviform pipe configuration was not available locally and had to be sourced and flown in from Germany, requiring tight procurement and logistics planning to protect the after-hours program schedule.
German UV CIPP System, Precision After-Hours Execution
Hydro Logic applied a German-manufactured UV cured relining system specifically engineered for oviform pipe configurations. All site works were scheduled, mobilised and completed during after-hours windows, with crews operating overnight to meet the program. Prior to lining installation, the asset was prepared using high-pressure water jetting and vacuum excavation to achieve the required surface condition.
A sewer bypass was designed and operated throughout the rehabilitation works to maintain continuous service to the hospital. The UV curing process was carefully managed to ensure full structural integration within each approved works window.
Zero Disruption. 50-Year Design Life. Full Documentation.
The rehabilitation was completed entirely within after-hours windows, with no disruption to hospital operations at any stage of the project. The asset was returned to service within the client's operational constraints and a post-installation CCTV inspection was completed and reported back to Sydney Water, confirming the asset met the required standard. The rehabilitated pipeline is now protected for long-term service life, eliminating the need for further near-term capital intervention.