Untitled Document

Giant anchor installation project under way at Australia's 48-MW Catagunya

Australia utility Hydro Tasmania reported June 3, 2009, it has installed the first four of 92 giant post-tensioned anchors in a dam safety refurbishment program at its 48-MW Catagunya Dam on Tasmania island’s Derwent River.

At a cost of A$38 million (US$30 million), the two-year project is to bring the 50-year-old dam up to current international safety standards. (HydroWorld 8/29/08)

At the time of its construction in 1962, the 49-meter-tall Catagunya was the largest dam of its type in the world. The utility said it is concerned that corrosion is weakening the steel cables that strengthen the concrete gravity dam.

The new anchors are steel wire bundles, 300 millimeters in diameter, with a holding force of 1,700 tons. Holes are being drilled up to 75 meters deep in the spillway. The cables, encased in grease and plastic pipe to protect against corrosion, are anchored in the holes and stretched tight by a jack at the top of the dam.

Hydro Tasmania Consulting performed design of the work, which is being carried out by local contractors.

Lake Catagunya water levels were lowered for the work, with normal levels to be restored upon completion, expected in mid-2010.

Catagunya is one of 10 power stations in the Derwent River catchment, which provides 27 percent of Tasmania’s electricity.

Latest Slideshow

Your Picture Here: Send Us Your Dam Selfie

View Slideshow >>

more slideshows >>   

Hydro Whitepapers

Hydro Industry Financials

Most Read Articles

Recent Comments

Continuing Education

Professional Development Hours
To access a course listing associated to a specific topic listed below, click on the topic of choice from the list below.

Volume 34, Issue 3
Volume 23, Issue 2

Archived Articles

2006 | 2007 | 2008 | 2009 | 2010 2011 | 2012 | 2013
Hydro Review Past Issues

Buyers Guide Products

Feasibility Studies

Knight Piesold implements feasibility studies, ...

Underwater Dam Inspection

Hibbard Inshore Inspects: Trash Racks, Lower Ou...

BoatBuster - Public Safety Boat Barriers

Worthington provides complete waterway barrier ...

Geotechnical Engineering, Geologoly and Dam

Design and planning of dams, dykes and structur...

Waterstop Repair

Emagineered Solutions® Hydrophilic Polyurethane...

Joint Leak Repair

Emagineered Solutions® has expertly serviced co...

Buyers Guide Companies

Toyo Pumps North America Corp

Provides slurry pumping solutions. Provides sub...

RST Instruments Ltd

Manufactures quality dam monitoring instrumenta...

McMillen LLC

Offers a “design-procure-build-operate” package...

Damwatch Engineering Ltd

Damwatch is a NZ-based dam engineering consulta...

Ruhfus Systemhydraulik GmbH

Designs and manufactures hydraulic servomotors ...