The brain of Mochovce NPP unit 3 switched on

03/11/2015
The brain of Mochovce NPP unit 3 switched on
Slovenské elektrárne switched on the control room of Unit 3, the brain of the nuclear plant, now 90 % completed and entering the testing phase.

Slovenské elektrárne, an Enel Group subsidiary, has switched on its new Control Room, the “brain” of Unit 3 of its Mochovce Nuclear Power Plant, which is now 90% completed. Overall, the entire project is 84% completed. Following this important milestone Unit 3 enters its testing phase.

“Today we switched on the brain of the new Mochovce unit 3, which will remotely control all the unit’s systems,” said Nicola Cotugno, General Director and Chairman of the Board of Directors of Slovenské elektrárne. “Our team and suppliers have been working relentlessly for more than 45 million hours, and their efforts have been rewarded with today’s launch of this innovative facility. Thus, we confirm our commitment to complete the Mochovce nuclear power plant in line with schedule.”

The third unit of the Mochovce nuclear power plant makes use of state of the art technology. The main control room is completely digitalised, which means that information is provided to operators and the plant control and protection functions via by a network of powerful computers. In total, it can process 37,000 signals, which originate from more than 4,000 instruments that are distributed in the power plant and are connected to the control system by approximately 3,600 km kilometres of cables.

Along with the main control room, an emergency control room is also ready. With regard to common equipment of the third and fourth unit of the Mochovce nuclear power plant, including a waste water treatment plant, a common control room of this power plant part was energised today as well.

The control room relied on innovative Instrumentation and Control (I&C) systems implemented and licensed in several countries all over the world such as the USA, Switzerland, Hungary and the Czech Republic as well as Slovakia.

The switch on of Unit 3 control room was preceded by energisation of the whole chain of power supply to the distributed control system (DCS), from the external 110 kV line and the medium and low voltage distribution to the 24 V power supply.

Mochovce 3&4 – the current state

The significant acceleration of construction activities and increased number of construction workers have characterised the first 10 months of this year at the Mochovce completion project in Slovakia. The peak number of workers has risen by 20% to 4,800 in 2015 from 3,940 in 2014, and up to now about 45 million man-hours have been completed at the project.

Of the total 110 site contractors, 53% are Slovak companies and 10% Czech. There are approximately 1,100 sub-contractors on the site, of which 46% are from Slovakia; 24% from the Czech Republic; 10% from Germany; and 7% from Italy and other countries. In total 78% of workers are Slovak. It is estimated that the construction of Mochovce contributes directly or indirectly to the creation of 10,000 jobs.

The completion of Mochovce is one of the biggest private investments in the history of Slovakia. Each unit of the power plant will provide 471 MW; this power covers approximately 13% of electricity consumption in Slovakia and will prevent release of more than 3.5 million tonnes of CO2 emissions into the atmosphere.

Total power plant completion costs are 4.63 billion euros; they will be covered solely by the company’s own finances.

Mochovce 3&4 construction in numbers