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Quarterly update: Hanhikivi 1 is preparing for the construction phase

In the first quarter of the year, Hanhikivi 1 project participants have continued design and licensing work. Turbine manufacturing progressed to the next stage when the generator rotor forging was completed in Japan.

The Hanhikivi 1 project is actively preparing for the construction of the nuclear power plant. Together, Fennovoima and the plant supplier RAOS Project have set construction readiness as the principal target for this year.

"Construction readiness consists of several different areas. The most important of which are design and licensing work and the ability of the entire supply chain to promote the construction of the power plant smoothly following Finnish requirements," says Jouni Takakarhu, Fennovoima's Project Director.

Last year, the Hanhikivi 1 project made significant progress in both design and licensing work. Fennovoima is currently reviewing the material for the second stage of the basic design and will continue to submit licensing material as part of the Preliminary Safety Analysis Report (PSAR) for approval to the Radiation and Nuclear Safety Authority (STUK). By the end of March, Fennovoima has submitted seven out of fifteen PSAR document batches to STUK, the most recent of which was submitted in February. Fennovoima will submit the next two batches in April. PSAR is the most important part of a nuclear power plant's license application, comprising about 80-90% of all the documentation required for the construction license.

Manufacturing of the main components moves forward

At the end of last year, the manufacturing of the turbine generator rotor forging was approved in Japan at the Japan Steelworks Works factory, where manufacturing started in autumn 2019. In March this year, the rotor arrived by sea at GE Steam Power's factory in Belfort, France.


Photo: The generator rotor was transported from Japan to France. Photo by GE Steam Powers.

"This is a significant step for the whole project. We are now able to test the project's internal quality control processes and practices in good time before the large-scale manufacturing starts," says Tiina Partanen, Turbine Island director at Fennovoima.

The generator is one of the most important parts of the power plant. It generates electricity by converting the turbine's kinetic energy into electrical energy. The generator rotor, in turn, transmits that energy to the generator. The generator rotor is 14 meters long and two meters in diameter. The rotor weighs 240 tons. The manufacture of the entire generator takes about 5-6 years.

Due to the corona pandemic, quality inspections related to the rotor's manufacture were outsourced to a local inspection company in Japan. Fennovoima's and RAOS Project's experts monitored and supervised its operations remotely. During the construction of the power plant, the equipment will be manufactured all around the world. The majority of the quality inspections of the standard non-safety-related equipment will be outsourced.

Preparations for the construction of the power plant continue at the site

At the construction site in Pyhäjoki, Fennovoima and RAOS Project continue to build the power plant area's infrastructure. Fennovoima focuses now on constructing the administrative building, which is the most significant individual building under Fennovoima's scope of works. Currently, formwork and reinforcement work are underway in the administration building project.

Fennovoima’s temporary office on the left. Administration building construction site on the right. March 2021.

In the scope of delivery of the RAOS Project, the main focus is on constructing the support buildings and the necessary infrastructure. Crushing and transport of excavated stone also continue on the construction site.

"At the moment, we are building a large warehouse area next to the accommodation village. There will be eight warehouses in total, each with an area around 5000 m2 which is about the size of a football pitch," says Rainer Goehring, Site Director of RAOS Project.

Warehouse area along the Hanhikiventie road. January 2021.

In other respects, work continues as planned at various sites in the construction base area, such as the reinforcement workshop, painting workshopand the turbine workshop.

The works at the administration building site and under the plant supplier's responsibility have increased the site's daily workforce to almost 400. During the first months of the year, nearly 200 new employees and 40 companies have been permitted to the Hanhikivi 1 site.

Fennovoima’s year 2020 report published

The newly published Fennovoima's Year 2020 report provides a snapshot of the Hanhikivi 1 plant's design and safety assessment and our responsibility work.

Fennovoima's 2020 report shows that the design and licensing work for the Hanhikivi 1 plant has progressed during the year.

In the report, Fennovoima's experts share their views on their respective areas of responsibility and the project's next steps. The report is available in Responsibility section at the Hanhikivi 1 website.

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