lexiara

(b)

for additional deliveries by the original supplier which are intended either as a partial replacement of supplies or installations or as the extension of existing supplies or installations where a change of supplier would oblige the contracting authority to acquire supplies having different technical characteristics which would result in incompatibility or disproportionate technical difficulties in operation and maintenance; the duration of such contracts as well as that of recurrent contracts shall not, as a general rule, exceed three years;

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Source: EUR-Lex CELLAR · retrieved 2026-09-04 · Text as consolidated on 2026-01-01; changes after this date are not shown.