Archive 2015

  • Unit Oskarshamn 3 Restarted

    Pressrelease Monday, December 21, 2015

    Early in the morning of 19 December, the electricity delivery at unit Oskarshamn 3 was resumed following only four days of downtime.

  • Temporary Operational Disturbance at Oskarshamn 3

    Pressrelease Tuesday, December 15, 2015

    On the night before Tuesday 15 December the electricity production at unit O3 was stopped due to a fault detected in connection with a capacity test being performed on a battery in the unit's auxiliary power system.

  • New Managing Director of OKG Appointed

    Pressrelease Monday, December 07, 2015

    OKG's board of directors has today appointed the present production manager at unit Oskarshamn 3, Johan Dasht, new Managing Director of OKG as from 1 January, 2016. Johan Dasht succeeds Johan Svenningsson who after three and a half years as the managing director of OKG now will be the Country Chairman of the parent company Uniper in Sweden.

  • Unit Oskarshamn 3 has Resumed the Electricity Deliveries

    Pressrelease Monday, December 07, 2015

    After nearly two weeks of maintenance activities, unit Oskarshamn 3 (O3) resumed the electricity deliveries early on 3 December. Maximum capacity is estimated to be reached after the weekend.

  • Temporary Shutdown at unit Oskarshamn 3 for the Purpose of Replacing a Fuel Assembly

    Pressrelease Friday, November 20, 2015

    The production at unit Oskarshamn 3 (O3) will be temporarily shut down on Saturday 21 November due to a damaged fuel assembly that must be replaced. The time required to complete the measure has been estimated at eight days and the intention is to have the reactor in operation again on 29 November.

  • Our Aim – Learning from the Best

    News Thursday, October 22, 2015

    A team of approximately thirty international nuclear experts are currently at OKG for a few weeks with the purpose of performing one of the regular recurrent reviews of the company’s activities.

  • Decision Made Regarding Premature Shutdown of Units Oskarshamn 1 and Oskarshamn 2

    Pressrelease Wednesday, October 14, 2015

    At an extraordinary shareholders’ meeting held today on 14 October 2015, OKG’s majority owner E.ON upheld their policy decision on the premature shutdown of units Oskarshamn 1 (O1) and Oskarshamn 2 (O2). However, this decision does not affect OKG’s largest reactor, Oskarshamn 3 (O3), which in the future will still be a central part of the stability of the Swedish electricity supply.

  • Maximum Production at Unit Oskarshamn 1

    Pressrelease Friday, October 09, 2015

    The production at unit Oskarshamn 1 (O1) was resumed on the evening of 8 October, and maximum power was obtained the following morning.

  • Johan Svenningsson appointed President of Uniper, Sweden

    Pressrelease Tuesday, September 29, 2015

    The Managing Director of OKG, Johan Svenningsson has been appointed president of Uniper’s Swedish operations and president of Sydkraft Nuclear Power AB, formerly known as E.ON Kärnkraft Sverige AB. This means that Svenningsson will resign his position as Managing Director of OKG. The process of finding and appointing his successor has been initiated.

  • Restart of Unit Oskarshamn 1 Obstructed

    Pressrelease Friday, September 25, 2015

    A technical failure on a valve resulted in that the restart of unit Oskarshamn 1 (O1) was stopped on Thursday evening. The operational disturbance occurred in connection with a compulsory performance test and an internal analysis has been initiated to establish the cause of the valve not functioning as expected.

  • Oskarshamn 1 Taken off the Grid in order for Troubleshooting to be Performed

    Pressrelease Wednesday, August 19, 2015

    Due to air leakage into the condenser, unit Oskarshamn 1 (O1) has been taken off the grid and troubleshooting has commenced.

  • Unfavourable Conditions Curb Production at OKG

    Pressrelease Monday, July 20, 2015

    During the past weekend, OKG was ordered to reduce the electricity production. This measure is a temporary adaptation to the reduced demand during the holiday season and a consequence of the energy policy means of control that disfavour the competitiveness of nuclear power based electricity production.

  • Resumed Electricity Deliveries at Units Oskarshamn 1 and Oskarshamn 3 after Successful Maintenance Measures

    Pressrelease Monday, June 29, 2015

    The measures at Oskarshamn 1 (O1) and Oskarshamn 3 (O3) have been very successful. Unit Oskarshamn 1 resumed the production on the night before this past Sunday, one day sooner than estimated, and unit Oskarshamn 3 resumed the electricity production last night, a few hours sooner than scheduled.

  • Resumed Electricity Deliveries at Unit Oskarshamn 3 and Maintenance Work in Progress at Unit Oskarshamn 1

    Pressrelease Monday, June 22, 2015

    The electricity deliveries from unit Oskarshamn 3 (O3) to the Swedish grid were resumed on 20 June, after disturbances that occurred during the power ascent following the annual outage. Unit Oskarshamn 1 (O1) was taken off the grid on Sunday 21 June for a scheduled shut down for maintenance work.

  • Application for Environmental Court Ruling on the Shutdown of unit Oskarshamn 1 has been Submitted

    Pressrelease Thursday, June 18, 2015

    The time of the shutdown of Oskarshamn 1 (O1) has not yet been established. By OKG submitting an application for an environmental court ruling, an important milestone in the preparations for a shutdown has now been passed.

  • Unit Oskarshamn 3 Restarted According to Plan after the Outage – Problems Detected during the Power Ascent

    Pressrelease Thursday, June 18, 2015

    On Sunday 14 June, unit Oskarshamn 3 (O3), the largest boiling water reactor in the world, was restarted according to plan after the annual outage had been completed. However, the power ascent had to be discontinued due to disturbances in the turbine plant, and analysis and measures are currently being performed in order to restart the facility.

  • Power Uprate at Unit Oskarshamn 2 Postponed

    Pressrelease Thursday, June 18, 2015

    OKG has recently renegotiated the supplier contract concerning the power uprate at unit Oskarshamn 2 (O2). The new contract states that the power uprate on circa 180 MW planned to take place in 2017, has been turned into an option. At present, no decision has been made regarding when this option shall be redeemed.

  • Resumed Electricity Deliveries at OKG – The Outage at Unit Oskarshamn 1 has been completed

    Pressrelease Tuesday, June 09, 2015

    Early in the morning of this past Saturday, unit Oskarshamn 1 (O1) was again synchronized to the grid after the annual outage had been completed. Maximum electricity delivery is estimated to be reached later this week when the initial test period has been completed.

  • Problems with a Turbine Valve Delay the Restart of Unit O1

    News Sunday, May 31, 2015

    Correcting the problems with a valve in the conventional turbine equipment means that the planned restart of unit Oskarshamn 1 (O1) is now scheduled to take place at the end of the week.

  • Time for the Outage at Unit Oskarhamn 3

    Pressrelease Tuesday, May 26, 2015

    After a peaceful operating season with stable electricity deliveries, it is now time for the annual outage at unit Oskarshamn 3 (O3), an outage which involves a great deal of work to be performed in a short period of time.

  • Subcontractor Benefited by Invalid Medical Certificates

    Pressrelease Monday, May 11, 2015

    Last week, four individuals have been suspended from work at OKG. The reason for this was that falsifications in their admission documents were found. The case concerns invalid medical certificates. OKG has immediately looked into if there are more of these invalid documents, and the company's supplier of occupational health service, Previa, has also reported the matter to the police.

  • Important Milestone Reached for Unit Oskarshamn 2

    Pressrelease Friday, April 24, 2015

    The safety modernisation currently being conducted at unit Oskarshamn 2 (O2) has now reached an important milestone. The extensive work with cable pulling has been completed and the project will now enter the finishing stage – the start-up.

  • Shutdown at unit Oskarshamn 1 after a record long operating period

    Pressrelease Wednesday, March 25, 2015

    After a record long operating period without any interruptions, unit Oskarshamn 1 (O1) suffered an operational disturbance on Monday 23 March. The disturbance began only two days before a planned shutdown was about to start in order to correct a water leak in the facility's fuel preheating system. Since the annual maintenance outage is about to start this following Easter, it has been decided that the unit will not be restarted until after the work has been completed on 22 May.

  • Total safety modernisation of Oskarshamn 2 completed before the turn of the year

    Pressrelease Friday, March 13, 2015

    It is now believed that the ongoing safety modernisation of Oskarshamn 2 (O2) will be completed before the turn of the year. The reason behind this assessment and the revised schedule is greater precision in the estimate of the time required for the remaining works and additional analytical works.

  • The Year of 2014 at OKG – Focus on Deliveries for the Future

    Pressrelease Wednesday, January 21, 2015

    The OKG organisation continued in 2014 to lay the foundations of a long-term reliable electricity delivery. Unit Oskarshamn 1 (O1) as well as Oskarshamn 3 (O3) delivered electricity on a stable and high level, as well as conducting very extensive outages. At the same time at unit Oskarshamn 2 (O2), the investment project was intensified, a project that creates the future conditions for a durable delivery capacity during the following twenty years.

  • O3 back in operation

    News Monday, January 19, 2015

    On Saturday afternoon, January 17, the world’s largest boiling water reactor Oskarshamn 3 (O3) could after well conducted measures supply electricity to the Swedish power grid.

  • Continuing operational disturbances at O3

    News Tuesday, January 13, 2015

    There are continuing operational disturbances at Oskarshamn 3 (O3) and intense efforts are ongoing to resume operation.

  • Failure at Oskarshamn 3

    News Monday, January 05, 2015

    Operation at Oskarshamn 3 was interrupted Sunday morning due to a problem in the feed water system. Measures are now taken to solve this and information on when the reactor will resume operation will be delivered Tuesday morning at the latest.