On the island of Olkiluoto off Finland’s west coast in the Gulf of Bothnia, the third block of the Olkiluoto nuclear reactor was erected. Olkiluoto3 has an electrical capacity of around 1,600 MW. Mauell carried out the following tasks.

Supply and installation of two 94-inch large-screen display units, two CCTV cabinets each equipped with two 42-inch LCD screens, and the complete control room walls furnished with mosaic-type displays for the simulator control room. The control rooms’ mosaic panels are more than 6 m long and approximately 1.5 m high. A total of about 35,000 mosaic modules were installed in the two plants. About 60% of them were printed with process symbols, texts or colored line diagrams.

Simulator control room

The simulator control room is used for training the power control room operators. Supervised by skilled personnel, the control room operators learn how to operate the reactor units and handle critical situations. It is possible to simulate the various fault which can occur to practice the best response. Simulator control rooms are the ideal environment for a thorough and realistic training of the personnel of fossil fuel and nuclear power plants. It is thus essential that the design and function of the simulator control room is completely identical to that of the real control room.

Real control room

The real control room (main control center) is the brain of the power station. It is here that all signals and process information are brought together and displayed. It represents the interface of the man/machine communication and is vital for the secure operation of the power plant.

Although computer screens have already arrived in power station control, too, and various control actions are executed via them, one wouldn’t want to rely solely on a few mouse clicks on a screen when it comes to shutting down a reactor block in the event of a fault. Mauell mosaic systems, therefore, are still highly accredited by the power industry: with an audible and perceptible keystroke, valves are opened or closed, or a LED display indicates the operational state of the plant without the electronics behind it.

Moreover, nuclear power plants normally implement redundant control spatially separated from the operating control room to be able to shut down the power plant if the main control room should fail. Here, too, mosaic systems are employed.