SEAGas pipeline
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The SEA Gas pipeline ''(South East Australia Gas pipeline)'' is a 687 km
natural gas Natural gas (also called fossil gas or simply gas) is a naturally occurring mixture of gaseous hydrocarbons consisting primarily of methane in addition to various smaller amounts of other higher alkanes. Low levels of trace gases like carbo ...
pipeline from the Iona Gas Plant near
Port Campbell Port Campbell () is a coastal town in Victoria, Australia. The town is on the Great Ocean Road, west of the Twelve Apostles, in the Shire of Corangamite. At the , Port Campbell had a population of 478. History The port and the town are name ...
in
Victoria Victoria most commonly refers to: * Victoria (Australia), a state of the Commonwealth of Australia * Victoria, British Columbia, provincial capital of British Columbia, Canada * Victoria (mythology), Roman goddess of Victory * Victoria, Seychelle ...
to the
Pelican Point Power Station The Pelican Point Power Station is located at Pelican Point, 20 km from the centre of Adelaide, South Australia on the Lefevre Peninsula. It is operated by Engie (previously known as GDF Suez Australian Energy), which owns 72 per cent of ...
at
Port Adelaide Port Adelaide is a port-side region of Adelaide, approximately northwest of the Adelaide CBD. It is also the namesake of the City of Port Adelaide Enfield council, a suburb, a federal and state electoral division and is the main port for the ...
. It connects Adelaide's gas supply to sources from Victoria's
Otway Basin The Otway Basin is a northwest trending sedimentary basin located along the southern coast of Australia. The basin covers an area of 150,000 square kilometers and spans from southeastern South Australia to southwestern Victoria, with 80% lying off ...
, thus increasing the security of natural gas supply to Adelaide. The pipeline is owned and operated by South East Australia Gas Pty Ltd who are owned in a 50-50 partnership by
APA Group (Australia) APA Group is a company in Australia which owns and operates natural gas and electricity assets. It is Australia's largest natural gas infrastructure business. It was founded in 2000, when Corporate spin-off, spun off from the Australian Gas ...
and the
Retail Employees Superannuation Trust Rest Super is an Australian industry superannuation fund established in 1988. It is one of Australia's largest superannuation funds by membership, with around 1.9 million members in June 2022. Rest currently manages A$66 billion in funds. Go ...
.


Route and branches

The main pipeline is from the
Minerva Minerva (; ett, Menrva) is the Roman goddess of wisdom, justice, law, victory, and the sponsor of arts, trade, and strategy. Minerva is not a patron of violence such as Mars, but of strategic war. From the second century BC onward, the Roma ...
gas processing plant at Port Campbell in Victoria to the
Pelican Point Power Station The Pelican Point Power Station is located at Pelican Point, 20 km from the centre of Adelaide, South Australia on the Lefevre Peninsula. It is operated by Engie (previously known as GDF Suez Australian Energy), which owns 72 per cent of ...
in northwestern Adelaide. There are two compressors on the route. The Miakite compressor at Grassdale in Victoria, and the
Coomandook Coomandook is a settlement about east-south-east of Adelaide on Dukes Highway in South Australia South Australia (commonly abbreviated as SA) is a state in the southern central part of Australia. It covers some of the most arid parts of th ...
compressor in South Australia are connected by two pipes. The rest of the pipeline is a single pipe. This central section has offtakes at Poolaijelo and Naracoorte. There are also offtakes to Jervois and the
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Meter Station. The pipeline now supplies not just the Pelican Point power station on Le Fevre Peninsula, but also both
Torrens Island Power Station Torrens Island Power Station is located on Torrens Island, near Adelaide, South Australia and is operated by AGL Energy. It burns natural gas in eight steam turbines to generate up to 1,280 MW of electricity. The gas is supplied via the SEAGas ...
and
Quarantine Power Station Quarantine Power Station is a gas-powered electricity generation facility near the northern end of Torrens Island in the northwestern suburbs of Adelaide, South Australia. It is at the opposite end of Torrens Island from AGL Energy's Torrens Isla ...
on
Torrens Island Torrens Island is an island in the Australian state of South Australia located in the Adelaide metropolitan area in the Port River Estuary about northwest of the  Adelaide city centre. Since European settlement of Adelaide in 1836, it has b ...
east of the peninsula. At the supply end of the pipeline, there is an lateral that connects Lochard Energy's Iona Gas Plant and
Beach Energy Beach Energy Limited is an Australian oil and gas exploration and production company based in Adelaide, South Australia. Formerly known as Beach Petroleum, the company changed its name to Beach Energy in December 2009. It is a component of the S&P ...
's
Otway Gas Plant Otway may refer to: Places Australia *Cape Otway, a geographical feature on the coast of Victoria, Australia *Shire of Colac Otway, Victoria, Australia *Great Otway National Park, a national park in Victoria, Australia *Otway Basin, a geological fe ...
to the main pipeline and a bidirectional connection between the Minerva Gas Plant and the Victorian gas transmission network. The offtake at Poolaijelo is the South East South Australia pipeline owned by APA. It supplies Epic Energy's South East Pipeline System at the Katnook processing plant southwest of Penola. The SEAGas gas replaces gas from the depleted Katnook Gas Field. It supplies
Mount Gambier Mount Gambier is the second most populated city in South Australia, with an estimated urban population of 33,233 . The city is located on the slopes of Mount Gambier, a volcano in the south east of the state, about south-east of the capital Ad ...
and Snuggery near Millicent as well as towns along the way and the
Ladbroke Grove Power Station Ladbroke Grove Power Station is a gas-fired power station in the locality of Monbulla near Penola in the Limestone Coast region of South Australia. It was built by Boral Limited in 2000. It is now owned by Origin Energy. The power station was ...
.


History and construction

The requirement for an upgrade to South Australia's natural gas infrastructure was first identified in June 2000 when the capacity of the MAPS (
Moomba Adelaide Pipeline System The Moomba Adelaide Pipeline System is a natural gas pipeline delivering gas from the Cooper Basin gas wells near Moomba to Adelaide, with spur pipelines to Angaston and Whyalla. It can also receive gas from Southeastern Queensland through the ...
) was close to being fully utilised. At this time, the MAP was the sole source of natural gas for Adelaide. As about two thirds of electricity consumed in South Australia was produced by gas-fired power stations, it was determined that the state needed an additional source of supply of natural gas. An additional factor was the redundancy provided by having two independent supplies. The need for this redundancy was dramatically confirmed when a fire at Moomba cut most of Adelaide's gas supply on the day SEA Gas began operation. The new pipeline supplied nearly all of Adelaide's gas needs at times while the damage was repaired. The pipeline was operated by a joint venture formed in May 2001 by Pelican Point Power (a subsidiary of
International Power Engie Energy International, formerly International Power, is a multinational electricity generation company headquartered in Newcastle upon Tyne, and a wholly owned subsidiary of the French company Engie (formerly GDF Suez). The company was form ...
and operator of the Pelican Point Power Station) and
Origin Energy Origin Energy an ASX listed public company with headquarters in Sydney. It is a major integrated electricity generator, and electricity and natural gas retailer. It operates Australia’s largest coal-fired power station at Lake Macquarie, New ...
(a major Australian energy producer and retailer). In September 2003,
TRUenergy EnergyAustralia (formerly TRUenergy) is an electricity generation, electricity and gas retailing private company in Australia, a wholly owned subsidiary of the Hong Kong-based and listed China Light and Power (CLP Group). EnergyAustralia also ...
(then owner and operator of the
Torrens Island Power Station Torrens Island Power Station is located on Torrens Island, near Adelaide, South Australia and is operated by AGL Energy. It burns natural gas in eight steam turbines to generate up to 1,280 MW of electricity. The gas is supplied via the SEAGas ...
) joined as an equal one-third partner. The initial proposal was to build a 14" diameter high-pressure gas pipeline, operating at 15
MPa MPA or mPa may refer to: Academia Academic degrees * Master of Performing Arts * Master of Professional Accountancy * Master of Public Administration * Master of Public Affairs Schools * Mesa Preparatory Academy * Morgan Park Academy * Mound ...
. This was modified to dual 14" pipes for 338 km of the route and an 18" pipe for the remainder when TRUenergy joined SEA Gas as to accommodate the additional capacity required by the Torrens Island Power Station. Construction commenced in October 2002, 180 km south east of Adelaide near Tintinara. Operations commenced on 1 January 2004, however the project was not officially opened until 15 March 2004. Construction was carried out on an engineer-procure-construct (EPC) basis by a joint venture between Australian pipeline company AJ Lucas Group and French company Spie Capag.


See also

*
List of natural gas pipelines This is a list of pipelines used to transport natural gas. Africa * Trans-Saharan gas pipeline (planned) * West African Gas Pipeline * Escravos–Lagos Pipeline System Asia * Altai gas pipeline (planned) * Arab Gas Pipeline * Pak Arab Pipeli ...


References


External links

* {{official website, http://www.seagas.com.au/ Natural gas pipelines in Australia Energy in South Australia Energy in Victoria (Australia) 2004 establishments in Australia Pipelines in South Australia Transport buildings and structures in Victoria (Australia)