This paper presents the summary of the activities related to data collection on the operating experiences gained in the Joint European Torus (JET) for the Vacuum and Active Gas Handling Systems and in the Tritium Laboratory of Karlsruhe (TLK). Failures/malfunctions, including information on failure modes and, where possible, causes and consequences of the failures, have been identified, as well as, whole sets of components, which the failures/malfunctions are related to. Reference components installed in the plant/facility have been classified and counted in order to find out their amount, related operating hours and/or related demands to operate. Main reliability parameters, (such as the failure rate and the corresponding standard errors and confidence intervals), associated to the components have been estimated.