As relays, sockets, relay boards and frames will soon reach their qualified life for the French 900 MW Fleet, EDF has to reassess this qualified life. Although several methods are proposed by the IEC 60780 standard, the only one which is applicable here consists in performing additional tests on aged equipment coming from different NPPs. The tests followed by this equipment are described as well as the results obtained. It is demonstrated that a large majority of this equipment can be safely used for 10 or 20 more years at least.