Fiji Nadarivatu Renewable Energy Project (Sinohydro)

Posted on August 24th, 2012 by editor

 

Sinohydro Dam Wall

Internal surfaces of the water pipes were coated with Denso ST Epoxy

 

Pipe in Position

 

Picturesque Fiji blessed with 332 magnificent islands, most with beautiful sandy white beaches, swaying coconut trees and pristine oceans is the scene for one of Denso Australia’s most recent projects.

Fiji, located in the tropical South Pacific, is situated on the International Date Line. On one of the islands (Tavueni), you can actually stand in a place where one foot is in the current day and the other foot in the day before. Fiji has a population of approximately half a million people the majority of whom either work in the Sugar or Tourism industries. Until the mid 19th century, the practice of eating one’s enemy was an accepted and honoured tradition so, if war had been declared, the Fijians would be sharpening their knives (and their forks)! Fiji is not only a holiday haven it is home to one of the world’s best Rugby Union teams and to golfer Vijay Singh.

Far from the white sandy beaches in the green lush highlands, the Fijian government is building a Hydroelectricity Station for which Denso provided products.  External and internal products were supplied to protect the 1.6km made up of 2250mmØ & 1600mmØ fresh water pipe.

The pipe was grit blasted to Sa2½ (with a blast profile of 50 – 70µm) externally and internally, the internals having a minimum blast profile of 65µm which was strictly adhered to. The first application was to stripe coat all weld seams using light grey Denso ST Epoxy (which has Potable Water Approval to AS/NZ 4020). This was followed by a full coat of the ST Epoxy at DFT of 250µm and allowed to cure. The second application was another stripe coat to all the weld seams and then a further full coat of the ST Epoxy in white at a minimum of 250µm DFT, achieving a total DFT of 500 – 600µm.

The external of the pipe was then coated with Primer D that was roller applied to a 50µm DFT then wrapped with Densopol 80 HT Tape with a 55% overlap.

Training and Inspection visits have been carried out by Denso on 3 separate occasions and we can report the project is going well and our products are certainly looking sensational!