Mochovce 3: Nuclear authority issued a draft decision on fuel loading

Mochovce 3: Nuclear authority issued a draft decision on fuel loading
When Slovenské elektrárne meets the conditions, UJD SR will issue a first-instance decision. When it comes into force, the fuel loading will start.

Slovenské elektrárne is approaching the Mochovce Nuclear Power Plant Unit 3 commissioning. The Nuclear Regulatory Authority of the Slovak Republic (UJD) issued a draft decision for fuel loading. “This means that at the beginning of the summer, we will be able to load fuel into Unit 3. In the worst case, it will be the end of 2020,” said Branislav Strýček, CEO of Slovenské elektrárne on 18 February 2020.

According to Mr. Strýček the draft was preceded by many technical tests and verifications. All the authorities involved in this procedure will have time to comment on the draft decision by 15 April 2020. UJD will then issue a decision to load fuel at Mochovce 3.

The verification of the preparedness of Unit 3 for operation also included two international reviews by the International Atomic Energy Agency (Pre-OSART Mission) and another one by the World Association of Nuclear Operators (WANO PSUR).

No obstacles

The missions ended in December and January and found no obstacles to the commissioning of Unit 3.

Fuel loading is delayed by two months compared to the deadlines we declared before. UJD considers most of the conditions to be fulfilled, we are only working on some minor issues that need to be fixed.

Branislav Strýček
Chairman of the BoD and CEO
Slovenské elektrárne, a.s.

Tests completed

  • After cold hydrotesting, hot hydrotesting and extended revision, Slovenské elektrárne performed reheating of the primary circuit in the end of 2019 and beginning of 2020.
  • In December and January, the company successfully performed the primary circuit pressure and leakage test, the pressure tests of all steam generators, the tests of back-up diesel generators, tests of essential service water flow, tests of heating, ventilation and air-conditioning and other systems.

Once the fuel is loaded into the Unit 3, physical commissioning will take eight weeks, and will be followed by power testing. The turbine test is started consequently and the plant operation is initiated. Thus, power generation of Unit 3 should be in testing mode within ten weeks after the fuel loading.“

Peter Andraško
Director of General Construction Management
Slovenské elektrárne, a.s.

The new nuclear units in Mochovce will have an installed capacity of 471 megawatts (total 942 MW), which will cover about 13% of the total electricity consumption in Slovakia.