Planning of Dependable Remote Handling Control System Architecture for ITER
Tutkimustuotos › › vertaisarvioitu
|Otsikko||European Nuclear Young Generation Forum, ENYGF 2011, 17.5.-22.5.2011, Praha|
|Tila||Julkaistu - 2011|
|OKM-julkaisutyyppi||A4 Artikkeli konferenssijulkaisussa|
|Nimi||European Nuclear Young Generation Forum ENYGF|
The experimental ITER fusion reactor will feature a number of remote handling (RH) systems that perform maintenance and replacement operations in the reactor. RH control systems must be fail-safe and recoverable, since no humans are allowed in the reactor and a failure could cause major economic losses or setbacks for the research program. ITER is a complex system and requirements for RH system opera-tions are demanding, including radiation toler-ance, limits for available space, heavy objects etc. The RH control software must be dependa-ble and operate in real-time, while supporting the changes introduced during the multidecadal lifetime of the ITER plant. Although the funda-mentals of implementing teleoperation systems are well-known, the application remains de-manding because of the environment, dependa-bility and interoperability requirements. Fault-tolerance techniques based on replication of components can be costly and introduce addi-tional complexity in the system. To achieve the goal cost-efficiently, the research aims to find and utilize the most useful methods from fault prevention, fault removal, fault tolerance and fault forecasting methodologies, all of which are necessary to ensure required dependability. These will be combined in a lean systems engi-neering framework that will include a reference architecture, hardware and software modules, processes and recommendations for develop-ment practices.