Safety comes first in Fennovoima

Fennovoima is responsible for the safety of the nuclear power plant. Safety is always prioritized in all aspects of our project from planning to construction and operation.

STUK's preliminary safety assessment

In May 2014, the Finnish Radiation and Nuclear Safety Authority STUK submitted a preliminary safety assessment to the Ministry of Employment and the Economy concerning the supplemented Decision-in-Principle of the Fennovoima nuclear power plant project.

Read the unofficial translation of STUK's preliminary safety assessment here.

Preparing and improving

Fennovoima is responsible for that the nuclear power plant is designed and constructed in a manner that secures safe operation.

Preparedness for all kinds of threats is ensured with extensive risk analysis and thorough planning. The principle of continuous improvement is followed meticulously: safety is constantly strengthened and improved.

Extreme nature phenomena such as sea level rise, storms, Arctic conditions and even earthquakes, are taken into consideration when designing the plant. The plant is also strong enough to withstand crash from a large commercial aircraft. The emergency cooling and power generating systems are a part of the safety design.

Best practices

In a modern nuclear power plant, the risk of accidents is minimized with technical solutions and multiple safety systems design for prevention as well as mitigation of impacts in case of any incidents.

The basic principle is the defence-in-depth: if one safety system should fail, there are other independently functioning systems that can take over and ensure all radioactive materials are contained and leaks prevented.

There are several inherent safety features in light water reactors. If for example the cooling of the nuclear fuel in the reactor would fail, the reactor will turn itself off so that the chain reaction in the fuel can no longer continue. Residual heat generated in the reactor has to be removed even when the reactor has been shut down.