ITER – “The Way”
The ITER will be built in Cadarache, in the south of France but joint work will continue in Germany and Japan. The ITER device will consist of a Tokamak-like design which is a torus-shaped device containing a hot gas controlled through magnetic effects. A complete technical documentation list can be found here.
The controls and data acquisition system is defined as the Codac sampling data at around 5MHz, but streaming data at 200MB/s from 4000 channels and saving up to 60 TB of data per year.
According to Joe Lister the ITER seeks a new level of reliability in an increasingly regulated industry for nuclear power generation. Their goal is 98.65% uptime over a 6 year period. They plan to have 3000 analog data points for feedback with a 1 to 5msec response rate for sensors to actuators. The 1588 bus is under consideration for timing applications.
There are nearly 120 unique plant systems that must be controlled using a “classical” distributed control design model. They are currently in the design stage of the CODAC system and plan to start operations in 2016. The CODAC is based on 3-levels of control including Interlock and Safety subsystems. The CODAC defines a set of XML schemas common to all plant systems that allow the system to be data driven. One of the challenges is coordinating the systems from 3 separate PLC vendors.