ensure that the functions of the system perform faultlessly, that the occurrence of faults in the functions is immediately reported (reliability) and that stored data cannot be corrupted by system malfunctions (integrity).
a áirithiú go bhfeidhmíonn feidhmeanna an chórais gan locht, go ndéantar tarlú lochtanna sna feidhmeanna a thuairisciú láithreach (iontaofacht) agus nach féidir sonraí stóráilte a thruailliú trí mhífheidhmeanna córais (sláine).