Some of the drainage pipes installed in the Gotthard Base Tunnel display reduced durability. This is the conclusion of SKZ Kunststoff Zentrum Würzburg, which was commissioned by AlpTransit Gotthard Ltd. to test the pipe material. However, based on this knowledge and the test results, the replacement of already installed drainage pipes is not an issue for discussion. As things stand today, there is nothing to prevent commissioning of the Gotthard Base Tunnel at the end of 2016.
According to the experts commissioned by the principal, it has been demonstrated that the material of some of the drainage pipes that were supplied and installed in the Gotthard Base Tunnel does not match the specifications of the work contract. Laboratory tests additionally indicate reduced durability of the pipes that do not conform to the contract as compared with the durability of conforming pipes.
In collaboration with Swiss Federal Railways (SBB), a monitoring concept has been established for the pipeline sections that are affected. The risk analyses that were performed by the engineering constoria indicate that at present, approximately 30 km of a total of 456 km of piping must be monitored more closely.
By contrast, based on its own investigations, the construction consortium of the Bodio and Faido lots has concluded that the fitness for use of all of the pipes is guaranteed without restriction for a service life of 50 years.
In August 2013, AlpTransit Gotthard Ltd. informed the relevant tunnel construction consortia of the results. AlpTransit Gotthard Ltd. will communicate its detailed claims to the consortia within the next few weeks. Thereafter, the construction consortia can submit a proposal for remediation of the non-conformity.
In the meantime, the bilateral consultations between construction contractors and the principal on this issue have begun.
Ceneri Base Tunnel: Appeals against railway systems work awards
Appeals have been lodged with the Swiss Federal Administrative Court against both of the awards made by AlpTransit Gotthard Ltd. in August 2013 of the Ceneri Base Tunnel railway systems lots "Railway Track + Logistics" and "Railway Systems and Overall Coordination".
On August 12, 2013, the Board of Directors of AlpTransit Gotthard Ltd. awarded the Ceneri Base Tunnel "Railway Track + Logistics" lot to the Mons Ceneris Consortium under the lead management of Mancini&Marti AG for the price of approximately CHF 96 million and the "Railway Systems and Overall Coordination“ lot to the CPC Consortium under the lead management of Cablex AG for the price of approximately CHF 129 million.
Appeals have now been lodged with the Swiss Federal Adminstrative Court against these two awards. AlpTransit Gotthard Ltd. has a period of 14 days within which to respond to the Federal Adminstrative Court in relation to these appeals.