• Always for  specific contracts of value </= 200.000  € • Optional, based on the  Contracting Authority ’s  internal decision for the service need in  question, for contracts of value >200.000 €  <= 5 00.000 € • Optional, based on  the  Contracting Authority ’s  internal decision for the service need in  question, for contracts of value >200.000 €  <= 5 00.000 € • Always for contracts of value >  500.000  € In case of unavailability of the first contractor, e.g. having failed the deadlines, having  proposed unsuitable consultants, or having conflict of interest (see section 3.2.4), etc.,  the second best ranked framework contractor will be approached, and so forth. The cascade process will terminate either with the award of the assignment in question  to one of the contractors, or with the failure to award the assignment to any contractor.  In the event of failure the Contracting Authority will withdraw the request, or redefine  the assignment and start the procedure based on a new request with the first ranked  contractor. Once the  Contracting Authority  agrees to the offer of a contractor the specific  contract will be signed. The process of implementation of the FWC in cascade is set out in Article I.4.3 of the  Draft Framework Contract. Subject to the provision on conflict of interest (see section 3.2.4), the reopening of  competition will entail the following phases: All framework contractors will be invited to  submit an offer. The  Contracting Authority  will evaluate the received offers and rank  them based on the award criteria stipulated in part 3.6 of these Tender Specifications.  The  Contracting Authority  will sign a specific contract with the winner of the reopened  competition. The process of implementation of the FWC via reopening of competition is set out in  Article I.4.3 of the Draft Framework Contract. Note on extension orders : a specific contract awarded to a FWC contractor under re- opening of competition can be extended with the same contractor, either via  amendments and/or via new specific contracts for optional services and/or phases when  originally foreseen in the request for offer, and at the same conditions of the initial  specific contract 2 . For additional services that have become necessary and are brought by circumstances  not initially foreseen (e.g. increase in the scope of the tasks mandated, additional funds  $^{2}$  The relevant provisions of the Framework Contract on price indexation applies. 8 B) Reopening competition: