Application of the integrated reliability analysis system (IRAS)

The management of process control deployment using interactions in risks analyses

“…In the reliability domain, (Kócza and Bossche, 1999) implemented a tool to support the reliability analysis of a system. With their development, they can present reliability analyses with fault trees (FT) or under the FMECA template.…”

Reliability Modelling and Analysis of a Tribo-Mechanical System

“…In other words, the rate of flow of coolant into the heat exchanger keeps outflow temperature of the oil (i.e., bearing (21) inlet oil temperature) constant. The cool oil from the heat exchanger is filtered in a duplex-type filter (19) and then supplied to the bearing (21) through throttle (20). A temperature controller is mounted on the supply line between the heat exchanger (17) and the filter (19), and controls the temperature of oil inflow to, as well as outflow from, the heat exchanger.…”

“…The cool oil from the heat exchanger is filtered in a duplex-type filter (19) and then supplied to the bearing (21) through throttle (20). A temperature controller is mounted on the supply line between the heat exchanger (17) and the filter (19), and controls the temperature of oil inflow to, as well as outflow from, the heat exchanger. During start-up and run-down operations, a three-phase AC full load auxiliary oil pump (9) supplies the pressure oil system and takes over the function of the main oil pump when it is not in operation because the turbine is running too slowly.…”

“…• Disturbance in power sources (7, 8, and 14) will directly affect the performance and operation of pumps (9, 10, and 15 respectively). • A fault in the operation of the auxiliary oil pump (9) and emergency oil pump (10) is directly observed at non-return valves (11) and (12) • A fault in non-return valves (11) and (12) will damage throttle (13) and filter (19).…”

“…It is found that although these methods are mathematically correct, they do not yield the actual reliability observed in practice [6][7][8][9][10][11]. Event tree, fault tree methods, cause consequence diagrams, Markov models and multisignal flow graphs and so on have been used extensively for reliability and testability analysis of nuclear power plant systems, chemical process plant systems, aerospace systems, and the like [12][13][14][15][16][17][18][19][20][21]. Although tests incorporate the desired consideration for mechanical systems in terms of structure of the system and interactions, they are limited to first neighbour connection only.…”