Public procurement notice: Contract Award Notice
Published: 2017-01-17
Buyer: Minesto UK Ltd
Country: UK
Region: SVERIGE
Contract type: Supplies
Procedure: Open procedure
CPV classification: 35512400 | 35521000: Shipborne weapon systems | 38542000
Award criteria: The most economic tender
EU fund: ERDF

Technical requirements: Lot 1 — Manufacturing of 12-meter wing in composite material for a submerged tidal power plant. Main materials are carbon fibre and glass fibre. Design depth around 90 metres.
Lot 3 — Design and manufacturing of a test rig for test of the wing section, and the performing of tests on the wing section.
The wing section is intended to be consumed in a destructive test. The test facility could be located in Sweden or elsewhere in Europe.
The wing section is a composite structure intended to imitate a critical part of the wing. It has an outer shell with dimensions 1 500 mm x 730 mm x 460 mm (Length x Width x Height) which wraps around the main beams to simulate the wing profile skin. Thickness of the shell is set to 12 mm with internal and external fillets of 10 mm. The wing section has several holes, some for metal inserts, some for an external loading test system.
I found no CPV code for wing section of composite material. Please see the Invitation to Tender for more details.
The test of the wing section could be performed anywhere in Europe. Minesto's design engineers who are based in Göteborg need to be present during the test to failure.
This lot concerns building a test rig for the parts obtained from Lot B, and the testing itself. 2 tests are requested: 1 fatigue test and 1 static test to failure.
With an estimated fatigue failure strain of > 0.4 %, FE simulations show that a fatigue failure is expected to happen for a load of between 1.9 and 3 MN and a static failure in the range of 3 — 4.5 MN.
The test displacement necessary is at least 10 mm. For fatigue with a load of 3 MN and R = 0.5, the stroke as calculated here by FE modelling is 2 mm. With some margin for flexibility in the rig etc., a requirement of preferably 3 Hz and at least 1 Hz at 3 MN and with 5 mm stroke (range) is a requirement for specification of the test machine.
The wing is a composite structure sized about 12 x 3 m. The main objective of the wing is to create a lift force of which a minor part will be used as the propulsive force of the power plant, however it has other sub functions as well.
The basic design is a glass fibre shell with a foam core and carbon fibre beams. There are many different openings/hatches for cabling and other subsystems.
— Optional transport to Minesto's office in Anglesey, Wales, DDP. Please note that the assembled wing does not fit into a 40ft standard shipping container. You may want to consider other container shapes or sea transport.
Please note that Minesto is a private company and does not qualify as a ‘contracting authority’ as defined in Directive 2004/18/EC of the European Parliament and of the Council. Minesto therefore is neither bound to nor intends to comply with requirements on contracting authorities described in EC guidelines. Nevertheless, Minesto is carefully intent on procuring the requested parts and service in a way that is fair, equitable, transparent, competitive and cost effective. Minesto publishes this ITT in the OJEU in the interest of the involved member states and for the benefit of exposure to more potential suppliers.


Winner: Green Marine
Number of bids: 8