the activities subject to the contract must, for operational reasons, start immediately even though it is not yet possible to determine a firm fixed price in full due to significant risks or because the performance of the contract depends in part on the performance of other contracts.
nach mór, ar chúiseanna oibríochtúla, tús a chur láithreach leis na gníomhaíochtaí atá faoi réir an chonartha, cé nach féidir fós praghas seasta daingean a shocrú go hiomlán mar gheall ar rioscaí suntasacha nó toisc go mbraitheann comhlíonadh an chonartha i bpáirt ar chomhlíonadh conarthaí eile.