Article 31Cases justifying use of the negotiated procedure without publication of a contract notice
Contracting authorities may award public contracts by a negotiated procedure without prior publication of a contract notice in the following cases:
for public works contracts, public supply contracts and public service contracts:
when no tenders or no suitable tenders or no applications have been submitted in response to an open procedure or a restricted procedure, provided that the initial conditions of contract are not substantially altered and on condition that a report is sent to the Commission if it so requests;
when, for technical or artistic reasons, or for reasons connected with the protection of exclusive rights, the contract may be awarded only to a particular economic operator;
insofar as is strictly necessary when, for reasons of extreme urgency brought about by events unforeseeable by the contracting authorities in question, the time limit for the open, restricted or negotiated procedures with publication of a contract notice as referred to in Article 30 cannot be complied with. The circumstances invoked to justify extreme urgency must not in any event be attributable to the contracting authority;
for public supply contracts:
when the products involved are manufactured purely for the purpose of research, experimentation, study or development; this provision does not extend to quantity production to establish commercial viability or to recover research and development costs;
for additional deliveries by the original supplier which are intended either as a partial replacement of normal supplies or installations or as the extension of existing supplies or installations where a change of supplier would oblige the contracting authority to acquire material having different technical characteristics which would result in incompatibility or disproportionate technical difficulties in operation and maintenance; the length of such contracts as well as that of recurrent contracts may not, as a general rule, exceed three years;
for supplies quoted and purchased on a commodity market;
for the purchase of supplies on particularly advantageous terms, from either a supplier which is definitively winding up its business activities, or the receivers or liquidators of a bankruptcy, an arrangement with creditors, or a similar procedure under national laws or regulations;
for public service contracts, when the contract concerned follows a design contest and must, under the applicable rules, be awarded to the successful candidate or to one of the successful candidates, in the latter case, all successful candidates must be invited to participate in the negotiations;
for public works contracts and public service contracts:
for additional works or services not included in the project initially considered or in the original contract but which have, through unforeseen circumstances, become necessary for the performance of the works or services described therein, on condition that the award is made to the economic operator performing such works or services:
when such additional works or services cannot be technically or economically separated from the original contract without major inconvenience to the contracting authorities,
or
when such works or services, although separable from the performance of the original contract, are strictly necessary for its completion.
However, the aggregate value of contracts awarded for additional works or services may not exceed 50 % of the amount of the original contract;
for new works or services consisting in the repetition of similar works or services entrusted to the economic operator to whom the same contracting authorities awarded an original contract, provided that such works or services are in conformity with a basic project for which the original contract was awarded according to the open or restricted procedure.
As soon as the first project is put up for tender, the possible use of this procedure shall be disclosed and the total estimated cost of subsequent works or services shall be taken into consideration by the contracting authorities when they apply the provisions of Article 7.
This procedure may be used only during the three years following the conclusion of the original contract.