Posiva has decided to implement the production facility which is designed for spent fuel handling and consists of the encapsulation plant and the final disposal facility. In addition to construction of the encapsulation plant the rooms that have already been excavated in ONKALO® shall be equipped with the systems needed for starting the final disposal.
Posiva’s expertise in the final disposal of spent nuclear fuel has attracted a lot of international demand. Posiva Solutions, a subsidiary of Posiva, has clients both in Finland and in other parts of the world.
Posiva Oy and YIT Construction Ltd have today signed a contract on the excavation of the first tunnels for Posiva's final disposal facility. The value of the contract is about EUR 20 million, and the estimated employment resulting from the contract, including the subcontractors, is about 100 – 125 person years.
The Czech Radioactive Waste Repository Authority SÚRAO will procure knowhow, which is accumulated during Posiva's final disposal project, for the final disposal of radioactive waste in the Czech Republic. The four-year service contract is worth EUR 2.75 million.
During Five Year Project in Greenland an International Team of Researchers Increased Understanding of Ice Sheet Processes.
Posiva Solutions has agreed to provide Fennovoima with expert services related to the final disposal of spent nuclear fuel. In its service business, Posiva Solutions will make use of the know-how and expertise of its parent company, Posiva. Posiva's know-how is the result of decades of research in the development of a responsible final disposal solution for the spent nuclear fuel generated in Posiva's owners' nuclear power plants in Olkiluoto and Loviisa.
Mr. Mika Pohjonen has been appointed as Sales Director of Posiva Oy as of 7 March 2016.
Posiva Oy and YIT Rakennus Oy have signed a contract on the next excavation project in the underground bedrock research facility ONKALO located in Olkiluoto. The bedrock facilities of ONKALO are utilised in research and testing activities, and later also for purposes related to the construction and use of the final disposal facility for spent nuclear fuel.
KONE Corporation, one of the global leaders in the elevator and escalator industry, and Posiva, an expert in nuclear waste management, have signed a contract on the delivery of a passenger elevator for ONKALO, Posiva’s final disposal facility for spent nuclear fuel in Olkiluoto, western Finland. The engineering and manufacturing of the elevator, which will reach a depth of more than 400 meters, are major stages in the construction of the disposal facility. The passenger elevator will feature KONE’s innovative UltraRope® technology.
The Finnish Government has today granted a licence to Posiva for the construction of a final disposal facility for spent nuclear fuel. After an extensive and multidisciplinary research and development work Posiva can now proceed to construction of the final disposal facility in Olkiluoto according to the concept it has developed. The final disposal of the spent fuel generated in the Olkiluoto and Loviisa nuclear power plants into the Finnish bedrock is planned to start in the early 2020's.
05.11.2015 Posiva sets sights on export markets
Posiva Oy, a Finnish expert company in nuclear waste management, has developed a final disposal solution for spent nuclear fuel within a pioneering R&D initiative. The solution attracts wide global interest and Posiva is now about to convert the expertise accumulated over several decades into a business opportunity. To this end, Posiva aims at offering expertise services on global markets.
22.05.2015 ONKALO hoist building reaches rooftop height
Work on the second phase of the ONKALO hoist building in Olkiluoto has reached rooftop height. After the second phase is complete, a personnel lift providing access to the underground facilities of ONKALO can be installed into the hoist building. The personnel lift will be the primary means of accessing the final disposal research tunnel for spent nuclear fuel, which reaches a depth of nearly 450 meters.
As the finishing touches are being applied to the building automation works in Posiva’s 10-year-old ONKALO, testing of deposition equipment prototypes is already underway in the ONKALO area
Copper - cast iron canister is the most important engineered barrier in the KBS-3 disposal concept for spent nuclear fuel adopted in Finland and Sweden. The copper canister consists of a copper tube with an integrated or a welded bottom and of a lid which is welded in the encapsulation plant after the spent fuel has been assembled into the canister. The properties of the weld shall not deviate from the properties of the copper components.
The deployment, on a large scale, of European and international collaborative research, development, and demonstration for deep geological disposal follows from the IGD-TP initiative, a dedicated technology platform launched in 2009. IGD-TPs draft Deployment Plan is now available for public consultation at the website www.igdtp.eu until 13th February 2012.
The excavation of the underground characterisation facility ONKALO, commenced by Posiva in 2004, will soon be finished. The excavation will continue at a depth of 437 metres on the technical level where ONKALO's ventilation and personnel shafts will be completed during 2012. A second demonstration tunnel is being excavated above the technical level at a depth of 420 metres. The tunnel will be completed at the beginning of 2012. Full-scale test boring of final disposal holes will be launched in the demonstration tunnels in the next few days. For the boring, Posiva has created a project called KapRe, which involves acquisition of the required boring equipment, for example. The equipment has been designed and manufactured by TRB Raise Borers Oy, which is based in Tampere, Finland, and supplied by Sandvik Mining and Construction Finland Oy.
Posiva and SKB, a Swedish-based nuclear waste management company, have signed a three-year cooperation contract related to the research and development of the final disposal of spent nuclear fuel. Through the cooperation, the companies can effectively utilise their resources in encapsulation and final disposal technology.
The ONKALO ventilation building project located in Olkiluoto is now at rooftop height. In the future, the approximately 20-metre-high building will be the place for taking care of ONKALO’s ventilation in a centralised and effective way so that the capacity of the building’s ventilation systems will also cater to the needs of the final disposal facilities. The systems of the building will be gradually introduced during this year: air will be conducted through the intake air shaft to the level of ONKALO’s technical facilities at the depth of 437 metres. Rakennustyöt Ville Kauppi Oy is in charge of the ventilation building project.
03.01.2011 Worker dies in accident at ONKALO
A fatal accident took place at the construction site of the underground research facility ONKALO in Olkiluoto, Eurajoki late on Sunday 2 January 2011. The accident occurred at the back of a tunnel reaching a depth of over 400 metres. Three workers equipped with iron bars were scaling the tunnel walls and ceiling. One of the workers was caught under a block of stone being barred down and died of the injuries he sustained.
The competence required by a safe final disposal of spent nuclear fuel and highly high active activity nuclear waste will be developed in the seventh framework programme’s three-year PETRUS II project supported by the EU.
17.06.2010 Posiva’s ONKALO at the final disposal depth
ONKALO, the underground rockcharacterisation facility excavated in the Olkiluoto bedrock, will reach its final disposal depth in June.
Posiva has signed a contract with Destia Oy on further contracting related to ONKALO. The work comprises excavation of the access tunnel down to the level of technical facilities at the depth of 437 metres, and testing and demonstration facilities built at the final disposal depth (420 m). It is estimated that the project will be completed in spring 2011.
In its research and development work, Posiva Oy, responsible for the final disposal of its owners' spent nuclear fuel, aims to submit, in 2012, a construction license application pursuant to the Nuclear Energy Act for a final disposal facility. The development work dealing with the final disposal's technical barriers (metal canister, bentonite buffer, tunnel backfill material) has progressed far, and ONKALO, an underground characterisation facility excavated in Olkiluoto, will reach the final disposal depth (420m) during the spring.
The access tunnel of the characterisation facility ONKALO, excavated into the bedrock of Olkiluoto, has advanced for four kilometres to a depth of almost 400 metres. The planned final disposal depth - 420 metres - will be reached at the beginning of next year. At that point, the application of the excavation technique and methods in the final disposal facilities will be examined.
Technology Platform for Implementing Geological Disposal (IGD-TP) supported by the European Commission, has now been established to add momentum to final disposal programmes of high-level, long-lived nuclear waste.
Posiva Oy has today submitted an application for a decision-in-principle to the Government, concerning the final disposal of the spent fuel from the Loviisa 3 unit to Olkiluoto in Eurajoki. The application is part of the decision-in-principle process of Fortum Oyj and Fortum Power and Heat Oy (Fortum). On 5 February 2009, Fortum submitted an application to build a third nuclear power plant in Hästholmen in Loviisa.
31.10.2008 The environmental impact of the expansion of the final repository for spent nuclear fuel has been assessed - Posiva has today submitted the EIA report to the Ministry of Employment and the Economy
Posiva Oy, a company responsible for the final disposal of spent nuclear fuel of its owners, has today submitted the Environmental Impact Assessment programme to the Ministry of Employment and the Economy. The EIA procedure pertains to the extension of the final disposal facility of spent nuclear fuel under design in Olkiluoto by a volume of 3000 tons of uranium to accommodate a total of 12000 uranium tons of spent nuclear fuel instead of the previously designed 9000 uranium tons. With the planned extension of the final repository Posiva prepares for receiving spent nuclear fuel from the potential Loviisa 3 nuclear power plant unit of Fortum Power and Heat Oy.
Posiva Oy has today submitted an application to the Finnish Government for a decision in principle on the final disposal of spent nuclear fuel from Olkiluoto 4 in Olkiluoto in the Municipality of Eurajoki. The application is part of the decision in principle process of Teollisuuden Voima Oyj (TVO). TVO has today submitted an application for the construction of the fourth nuclear power plant unit in Olkiluoto.
The excavation of the underground research facility ONKALO designed for research on the final disposal of spent nuclear fuel has proceeded according to plans in Olkiluoto. The almost 2.6-kilometre long tunnel now extends to a depth of ca. 240 metres. Ventilation and personnel shafts have also been raise-bored to a depth of 180 metres.
The construction project of ONKALO, the underground facility for research related to final disposal of spent nuclear fuel, has reached another milestone, with the ventilation shaft completed at a depth of 178 metres. The shaft was excavated as a rise-boring operation, using a reamer bit with a 3.5 metre diameter. The Swedish Bergteamet Company was in charge of the rise-boring operation.
The construction of the underground characterisation facility ONKALO, built for investigations related to final disposal of spent nuclear fuel, has now progressed to a length of ca. 2010 metres, and to a depth of almost 200 metres. Investigations and excavation operations proceed on schedule, and according to plans the final disposal depth at -420 m level will be reached in 2009. The application for the construction licence of the repository is scheduled to be submitted to the Finnish Government in 2012.
The spent nuclear fuel-related final disposal research and development work has proceeded to a new programme stage. Posiva has the intention to present the first general description of the data for the evaluation of the authorities by the year 2009. On this basis, the construction permit for final disposal at Olkiluoto in Eurajoki shall be applied for. Currently, during the three-year research and development programme set into motion, Posiva shall specify on a sufficiently detailed level the operations particular to the final disposal concept in accordance with the requirements demanded by long-term safety under the bedrock conditions found at Olkiluoto.
SKB and Posiva have signed a new five-year agreement on continued collaboration on the method and development work for the final disposal of spent nuclear fuel. The purpose of the collaboration is to pool the two organizations’ resources in encapsulation and disposal technology as well as in bedrock investigations.
The ventilation shaft of ONKALO, the underground facility for research on final disposal, has been completed down to a depth of ca. 90 metres. The shaft was realised using the raise drilling technique, in which a raise borer at ground level pulls a 3.5-metre diameter reamer bit upward from the bottom of the pilot hole. The raise drilling operation was implemented by the Swedish company Bergteamet.
Research into the final disposal of spent nuclear fuel entered a new phase today when Posiva Oy, which is responsible for the project, started construction work on the ONKALO underground characterisation facility at Olkiluoto. The over 500-metre deep tunnel leading down to the characterisation facility is expected to be completed by 2010. Sinikka Mönkäre, Finnish Minister of Social Affairs and Health, set off the first blast that signified the start of the construction of ONKALO.
Posiva Oy, which is responsible for the final disposal of spent nuclear fuel in Finland, today filed the construction permit application for the underground research facility ONKALO with the Municipality of Eurajoki. The research facility will be constructed to verify the results so far obtained by drillings from above ground on the suitability of the bedrock in Olkiluoto for final disposal. The construction of ONKALO will facilitate the planning of the final repository and the research activities carried out in ONKALO will produce information required for filing the building permit application for the final repository with the Finnish Government.
In the next few years, Posiva will start to construct an underground characterization facility on the island of Olkiluoto in Eurajoki, which has been selected as the site for the final disposal facility of spent nuclear fuel. This characterization facility is called ONKALO, and it will be used to acquire detailed information about the bedrock in Olkiluoto, to be utilised in the planning of the final disposal facility. After an evaluation of various access way types for ONKALO, it has been decided to use an access tunnel. Another alternative that was considered would have been a shaft type access way.
24.05.2002 Finnish Parliament ratifies policy decisions
On 24 May, the Finnish Parliament ratified with 107 votes for, 92 votes against, the policy decisions taken by the Finnish Government on 17 January 2002, on the construction of a fifth nuclear reactor and the extension of the final disposal facility for spent nuclear fuel.
29.06.2001 Posiva and SKB into closer cooperation
Posiva and the Swedish nuclear waste management company SKB (Svensk Kärnbränslehantering) have concluded cooperation and information exchange agreements on research and technology for spent nuclear fuel. The agreements not only ensure continuation of cooperation that started already in the 1980s, but also widen the scope of collaboration in research and development activities focusing on final disposal and encapsulation technology. The agreements will remain in force for five years.