Slow Testing May Delay Olkiluoto 3 Startup

The Areva-Siemens consortium building the 1.6 GW Olkiluoto 3 European Pressurized Reactor in western Finland will revisit the timetable for start up in December, taking into account delays in testing, utility-operator Teollisuuden Voima (TVO) said this week.

Olkiluoto 3 The final testing phase has been slower than expected TVO said confirming the delays on Thursday.

”The completion of the commissioning tests has not been progressing according to the updated schedule for commissioning by the plant supplier Areva-Siemens,” TVO said.

The startup schedule announced in June 2017 slated the first power testing by May 2019 with the startup of operations scheduled for September 2019.

However, the plant is already close to a decade behind schedule. The original startup date of 2009 has long gone by.

With that problem already established, the consortium will be penalized for further delays. Areva-Siemens is already set to pay the operator 450 million euros ($518 million) due to delays and will have to pay an additional 500 million ($575 million) if the startup is pushed past September 2019.

Whether that startup schedule has been threatened or not has not been announced. “TVO cannot estimate whether or not the schedule will influence the start of regular electricity production in September 2019,” the company said.


Olkiluoto 3 will be Finland’s fifth and largest nuclear reactor. It is expected to generate 10 percent of Finland’s electricity.

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