risks arising where maintenance or calibration are not possible (as with implants), from ageing of materials used or loss of accuracy of any measuring or control mechanism.
rioscaí a thagann chun cinn i gcás nach féidir an fheiste a chothabháil ná a chalabrú (i gcás ionchlannán), de dheasca aosú na n-ábhar atá in úsáid, nó de dheasca laghdú cruinnis aon sásra tomhais nó rialaithe.