Skip to content

TVO: Progress made in OL3's feedwater pump damage probe

Finland's newest nuclear reactor has been offline since October.

Feedwater pumps in the turbine plant of a nuclear power facility pump water from the feedwater tank to steam-powered generators. File photo of Olkiluoto 3. Image: Lucas Ekblad / Yle

An investigation into damaged feedwater pumps at Finland's beleaguered nuclear reactor, Olkiluoto 3, has shown some progress, according to its operator Teollisuuden Voima (TVO).

In a tweet on Friday, TVO said that laboratory investigations into the split impeller of OL3's feedwater pump had been completed "and the specific operational history has been clarified."

The company also noted that it has also looked into operational experiences of the same type of pumps from around the world.

OL3 has not been operational since October after cracks were found in all of OL3's feedwater pumps.

TVO said that it would issue a new update when more research is completed.

The company initially reported about the feedwater pump damage on 19 October, saying that it was unclear how long the issue would take to resolve, noting that the situation had "no impact on nuclear safety."

Feedwater pumps in the turbine plant of a nuclear power facility pump water from the feedwater tank to steam-powered generators.

The full commissioning of the facility is of major importance for Finland's energy self-sufficiency. If OL3 is not running before cold winter weather sets in, the situation will impact both electricity prices as well as supply.

The Olkiluoto 3 project — which had initially been due to start full power electricity production in 2009 — has been besieged by problems and setbacks, including faulty components, safety tests, and even a lawsuit.

The 1.6-gigawatt OL3 will become Finland’s fifth and biggest reactor, and is expected to produce around 14 percent of the country’s electricity once it is fully operational, possibly by the end of this year.

Latest: paketissa on 10 artikkelia