South Brittany network strengthening project

After seven months of construction, the network reinforcement project comes to an end. To find out all about the restoration of the land crossed and the filling of the pipeline with gas, consult the newsletter:

The safety of structures is at the heart of GRTgaz's concerns. The Bretagne Sud project is no exception to the rule. From site supervision, to hydraulic tests that check the compliance of the structure, discover all the processes in place to deliver a faultless structure.

The completion of four directional drilling operations on the site marks a key step in its progress. Installation works over the 98 km route are moving forward at pace, while the delivery stations are preparing the for connection of a new pipeline.

Discover the site’s main activities before the rehabilitation work!

An exceptional worksite with outstanding organisation! Two GRTgaz teams are supervising two groups of companies working simultaneously on the main sections of the pipeline. Opening accesses, earthworks for platforms, directional drilling... more and more operations are taking place along the 98 km of future pipeline. Planning, players, and some big steps to come...

Pour tout savoir sur le chantier de pose :

>> Newsletter No. 8 - Morbihan - February 2021
>> Newsletter No. 8 - Britany - February 2021

The prefectures of Morbihan and Finistère grant GRTgaz the use of administrative servitudes.

Public meetings were initially scheduled in the four municipalities crossed by the pipeline. However, these had to be cancelled due to the health crisis. GRTgaz suggested live web conference as a digital alternative.

The Finistère Prefect issued a temporary occupancy decree for the municipalities of Châteauneuf-du-Faou (29) and Spezet (29) for the subsurface drilling of the River Aulne.

 Launch of the project’s first directed drilling operation. The pipeline extends 1.2 km between the municipalities of Berné and Plouay, reaching a depth of almost 18 meters under the River Scorff in Morbihan.

The procedure involves drilling the subsoils using a drill with an adjustable bit. Once the bit emerges, we expand the borehole by drilling successive bores into which the pipe will later be inserted. The equipment needed for the works will be installed from platforms located on both sides of the borehole. Directional drilling has the advantage of avoiding impacts on the valleys of these watercourses and their woodland areas, conserving their environmental stability.

As part of the project, three other subsurface directional drilling operations are being prepared for the River Blavet, the River Aulne and the River Aër – the three main watercourses crossed by the pipeline.

• Newsletter No. 11 - November 2021
• Newsletter No. 10 - August 2021
• Newsletter No. 9 - May 2021
• Newsletter No. 8 - Morbihan - February 2021
  Newsletter No. 8 - Britany - February 2021
• Newsletter No. 7 - December 2020
• Newsletter No. 6 - June 2020
• Newsletter No. 5 - October 2019
• Newsletter No. 4 - July 2019

2020

• 7 December 2020 – Transferability Decree (Morbihan and Finistère Prefectures)
• 9 November 2020 – Temporary Occupancy Decree – Finistère
• 1 October 2020 – Temporary Occupancy Decree – Morbihan
• 14 September 2020 – National Nature Protection Agency (CPPN) Amending Decree
• August 2020 – New Occupancy and Temporary Trespass Decree
• June 2020 – Prorogation of the Declaration of Public Utility for construction and operation works relating to the pipeline by Inter-Prefectural Decree
• June 2020 - Supplementary Inter-Prefectural Decree to the authorisation to construct and operate obtained in September 2015
• May 2020 - Authorisation to trespass on private property – Finistère Prefecture

2019

• July 2019 - Decrees authorising the temporary occupancy of private plots
  >> See the Occupancy Decree for Morbihan
  >> See the Occupancy Decree for Finistère
• May 2019 - Decree prescribing archaeological diagnostics
  >> Phase 1 | Phase 2 | Phase 3
• January 2019 - Decrees authorising trespass on private property
  The prefectural authorisation to trespass on private property is to enable operations by GRTgaz agents and subcontractors in the study phase and for preparatory land works. The Decree is displayed in the town hall of every municipality affected by the project.
  >> See the Trespass Decree for the Department of Morbihan
  >> See the Trespass Decree for the Department of Finistère

2017 - 2018

• 27 November 2018 - Dismissal of the Appeal against the Declaration of Public Utility
  >> See the decision of the Nantes Administrative Court of Appeal
• 23 January 2017 - CNPN Decree
  >> See the Inter-Prefectural Decree

2014 - 2015

• September 2015 - Ministerial Decree authorising the construction and operation of the pipeline
  >> See the Ministerial Decree
• May 2015 - Declaration of Public Utility (DUP) for the project awarded on 20 April 2015
  >> Download the Declaration of Public Utility (DUP)
• September 2014 – Notice of Public Inquiry into the South Brittany project
  >> See the Notice of Public Inquiry
• May 2014 - Notice of the Environmental Authority
  >> See the Notice of the Environmental Authority