In addition to the initial WTP upgrades we have installed a 4th tube settler Clarifier at Waila WTP and Sludge settling systems at both plants.
For this project we entered into a consortium with Fletchers
Pacific and Service Engineers.
The client is Water Authority Fiji (WAF). To operate in Fiji we had
to form a new company. Current Electrical (Fiji) Ltd. We
subcontracted Production Logistics (PLNZ) to write the PLC and
SCADA Code. The MCC's were built by Lynn Electrical
The contract was for two Water treatment Plants (WTP's) Waila,
Tamavua and Waila Pump Station. All 3 of these sites have been
completely re-furbished, and in most cases re-wired. It was quite a
task to ensure that Suva did not run dry, except for major planned
shutdowns, with these 2 plants supplying all of the city's
water.
Harrison Grierson designed the process, McMahon Engineering
Consultants specified the electrical requirements, supplied Generic
drawings and some schedules. We generated the rest of the schedules
and 412 A3 drawings
At Waila WTP There are 6 High Lift pumps sending the treated
water into Suva, with a total load 2,060 kW. Then there is of
course the plant itself. 7 sand filters and all of the PLC / SCADA
/ MCC's etc required to run the plant
Waila Pump station has 5x 160kW Pumps. Each pump on a VSD to
regulate the flow to the Treatment plant via Serck Telemetry.
Tamavua WTP is very similar to Waila WTP but being on the Hills
above Suva is without the High Lift pumps
Sample
High Lift Pump wiring drawing available here
Sample Waila SLD here