When will construction of the pipeline commence?
When will the gas become available?
Why has it taken until now to decide to build Galsi?
Why was it decided to pass through Sardinia?
How was the route decided and why were the Gulf of Palmas, Olbia and Piombino chosen as landing sites?
How will the gas delivered by Galsi be distributed in Sardinia?
Are there any constraints limiting the route of the onshore pipeline?
What criteria have been followed for selecting the location of Olbia compressor station? Why the location must be so close to the coast?
What are the biggest pipelines currently operating between Italy and other countries?
Has the route chosen by Galsi been presented and shared with the areas crossed by it?
Will owners of land crossed by the gas pipeline be reimbursed for their trouble during the construction?
Will lands crossed by the gas pipeline be expropriated?
Who will make connection networks from the Galsi pipeline to urban networks in Sardinia, and who will fund them?
How long will pipeline construction works last?
How much space will the work track take during construction?
When will construction of the pipeline commence?
Pipeline construction is expected to begin in 2011.
When will the gas become available?
The pipeline should be operational by 2014.
Why has it taken until now to decide to build Galsi?
Recent breakthroughs in technology have made projects like Galsi possible, allowing pipelines to be laid on the sea bed at very great depths. Indeed Galsi represents a huge technological challenge. At a depth of 2885 m between Algeria and Italy, Galsi will be the world's deepest subsea gas pipeline.
Why was it decided to pass through Sardinia?
Because Sardinia is the most direct and quickest route between the Algerian deposits and the Italian peninsula. Sardinia is also the only region of Italy which still has no methane. Galsi will allow the trading and distribution of natural gas across the island to meet its energy needs.
How was the route decided and why were the Gulf of Palmas, Olbia and Piombino chosen as landing sites?
Plotting the route involved several years of studies and inspections to avoid areas of greatest natural beauty and archaeological value and far from centres of population to minimise disturbance during the construction phase. The landings at Porto Botte, Olbia and Piombino were chosen following detailed geomorphological / geotechnical / seismic surveys conducted by specialist firms over many months, employing expert geologists and highly sophisticated equipment. The choice of landing sites was determined by the optimal sea floor passage.
How will the gas delivered by Galsi be distributed in Sardinia?
Galsi will build the International segment of the pipeline while Snam Rete Gas will build the whole domestic segment. As to connecting the main line of Galsi with urban networks for methane distribution to users, Sardinia regional authority is already dealing with it. The methanization plan of Sardinia cities has already been started by the Regional authority which has earmarked enough funds for the methanization of all areas. Some networks have already been completed and others are being built. The Sardinia regional authority is preparing the plan for the construction of connections of local networks to Galsi, on which Snam Rete Gas has already confirmed that it is ready to build them.
Are there any constraints limiting the route of the onshore pipeline?
The only limitation to the passage of the onshore section will be a small protected zone where building permission is denied.
What criteria have been followed for selecting the location of Olbia compressor station? Why the location must be so close to the coast?
The position of the compressor station was decided on the basis of the following criteria: • low population density in the area; • flat terrain means minimum environmental impact compared with hilly areas that would require excavations; • the zone is hidden from view from the sea and the coast; • the area already has activities that are not conducive to tourism (a landfill and a quarry). In addition, the technical operating specifications require such compressor stations to be located as close as possible to the coast. This is to reduce the length of overground piping from the station to the undersea pipeline where the gas pressure is higher than that of the main gas network (to enable the gas to complete the crossing between Olbia and Piombino). The site, which was suggested by the town council itself, is in an area designated for agriculture and hidden from the coast.
What are the biggest pipelines currently operating between Italy and other countries?
There are four main pipelines supplying natural gas to Italy: - TAG, which delivers Russian gas through Austria - TRANSITGAS which brings gas mainly from the North Sea via Switzerland - TRANSMED, from Algeria to Sicily via Tunisia (Mazara del Vallo), - GREENSTREAM, the gas pipeline from Libya with point of entry at Gela in Sicily Further information can be found on the SnamReteGas and ENI web sites.
Has the route chosen by Galsi been presented and shared with the areas crossed by it?
Galsi route has been presented to all city councils affected by it. Galsi met individually, even many times, all directors and technical offices of each municipality to present the project, the route in the relevant area and share comments and observations. The final route is also the result of the observations and requests of change received, nearly all of which have been accepted.
Will owners of land crossed by the gas pipeline be reimbursed for their trouble during the construction?
As is envisaged by law, owners of lands crossed by the pipeline will be indemnified for the trouble suffered during construction and for the lack of harvest in case of agricultural land.
Will lands crossed by the gas pipeline be expropriated?
Absolutely not. Land crossed by the pipeline will remain in the hands of the legitimate owners. A right of way of 20 metres on both sides of the tunnel will simply be applied. Only building will be prohibited in that area.
Who will make connection networks from the Galsi pipeline to urban networks in Sardinia, and who will fund them?
Connection networks from the Galsi pipeline to urban networks, that will build the regional network, can be constructed, as was the case for the south of Italy, by Snam Rete Gas which has already confirmed that it is ready to do so to the Sardinian regional authority. The construction of these networks will be funded by Snam Rete Gas amortising the cost on the whole transport domestic system.
How long will pipeline construction works last?
Gas pipeline construction works will last around 18 months on the whole and will be divided on the whole area in various building sites working simultaneously. Building site progress speed is of 500 linear metres per day.
How much space will the work track take during construction?
The work track used for construction activities will be 30 metres on the whole. in the environmentally most sensitive areas, the work track will be narrower and limit to a minimum the area used for laying operations.