Colongra peaks with Enerflex

Enerflex was contracted to complete gas compression and conditioning facilities to supply Delta Electricity’s 660 MW Colongra Gas Turbine, designed to be able to start up quickly and achieve its full capacity within 20 minutes.

Jemena and Enerflex worked collaboratively to complete the project successfully.

At one end of the Colongra Lateral Pipeline, Enerflex has installed the metering system and gas compressor station. The compressor station comprises two Enerflex-packaged reciprocating compressors, after coolers and filtration. It uses grid connection as primary power for the site with emergency backup facilities. The inlet metering and custody transfer systems were built as an integral part of the station with significant attention given to site security requirements.

The gas delivery station was located adjacent to the delivery point at the existing Delta Electricity Munmorah Power Plant and was constructed in parallel to the main compression facility. The compressor packages were engineered and assembled at Enerflex’s Canadian manufacturing facility in Calgary, Alberta.

Enerflex also installed the
6 MW water bath heater, the largest ever built in Australia, to condition the gas supplied to the Colongra Gas Turbine. The water bath heater pre-heats high-pressure gas before it is cooled during pressure reduction. Cooling can cause the formation of hydrates and liquids that can damage the power turbine generators, and so must be compensated for by pre-heating the high-pressure gas.

Enerflex Business Development Manager Kelvin Andrijich said that the project is very much part of the company’s core business and the company was on track to complete the project on time and on budget. At the time of writing, the project was in the final stages of commissioning.

“We used a streamlined project and construction management approach that involved close collaboration with our client Jemena early in the proposal stages of the overall project,” said Mr Andrijich.

“Enerflex also managed the entire engineering, procurement and construction process successfully for the compression, offtake and conditioning facilities.”

Jemena Engineer Manager Andrew O’Neill said that the overall experience of working with Enerflex was a positive one.

“Enerflex is highly experienced,” said Mr O’Neill. “The company takes a client-focused approach and is able to produce high-quality documentation on time.

“We had a very short timeframe on this project and it really suited the engineering, procurement, construction approach, which was what Enerflex chose to use.”

The project was built on a greenfields site, with both Enerflex and Jemena working to stringent environmental requirements.

“On the safety side of the project, we were able to report zero lost time injuries,” said Mr Andrijich.

Enerflex provides specialised engineering, construction, fabrication and maintenance services to the oil and gas, infrastructure and manufacturing industries. For further information visit

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