Client Portfolio
Baulderstone Hornibrook Nepean Dam Project
Contractor Baulderstone Hornibrook approached AGE Developments to help solve a particularly tricky problem they were encountering on the Nepean Dam Project.
48” dam scour pipe valves on the downstream face of a 1920’s constructed dam needed to be removed, repositioned and re-installed at a later date. With 75m water pressure acting against the valve and the only access being approximately 100m below the dam service road, the job required a custom designed and manufactured tool.
AGE designed and manufactured a dual seal inflatable packer system
complete with roller housings and counter weights to balance the system
horizontally when submerged in water. The packer system was weighted,
balanced and installed via a crane located on the dam wall whilst being
directed by divers below. The final packer design was 1140mm OD and had
an effective rubber length of 1200mm.
Once the dual packer system was inflated, the monitoring ports
provided the confidence for personnel to enter the confined valve
access area downstream of the packer supporting the 75m head of
pressure.
The packer system alone finished the job of holding back the entire dam
contents under the head pressure for six months whilst the downstream
pipe work was modified.
To find out how AGE Developments can provide solutions to your organisation, contact us today.
