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Teollisuuden Voima Oyj’s Interim Report January – June 2019

During the first half of 2019, Teollisuuden Voima’s (TVO) electricity generation at Olkiluoto 1 and Olkiluoto 2 plant units continued safely and reliably. The electricity production of Olkiluoto nuclear power plant reached 500 TWh on 21 April.

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OL3 EPR's regular electricity generation starts in July 2020

Teollisuuden Voima Oyj (TVO) has received an updated schedule for the commissioning of the OL3 EPR plant unit from the plant supplier Areva-Siemens Consortium. According to the received information, the regular electricity generation at the OL3 plant unit will start in July 2020.

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Annual outages reach completion in Olkiluoto

The annual outages of 2019 reached completion on Tuesday, 11 June, at 10.46 p.m. when the Olkiluoto 1 plant unit (OL1) was re-connected to electricity production. This year OL1 underwent a refuelling outage while more extensive maintenance work was carried out at the Olkiluoto 2 plant unit (OL2). The total duration of the annual outages was about six weeks.

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Annual outages in Olkiluoto reach halfway point

The annual outage has been completed at the Olkiluoto 2 plant unit (OL2). The plant unit was re-connected to electricity production on Sunday, 26 May, and is again producing electricity for Finland. The annual outage started at OL2 on Wednesday, 1 May.

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Olkiluoto 3 surge line vibration is resolved

The cooling circuit’s pressurizer surge line vibration detected in hot functional testing of OL3 EPR plant unit in the first half of 2018 will be eliminated by liquid absorbers. The material used in absorbers is bitumen which has been approved by the Finnish Radiation and Nuclear Authority (STUK).

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Annual outages brought forward in Olkiluoto due to fuel damage

Annual outages at the operational plant units in Olkiluoto will be started four days earlier than originally planned. The reason for this is the need for procedures needed at the unit Olkiluoto 2 to remove damaged fuel from the reactor. Some amount of radioactive substances are released from damaged fuel into reactor water. This does not cause any risk to the environment.

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Historical 500-terawatt hour milestone in electricity production reached in Olkiluoto

​Olkiluoto nuclear power plant of Teollisuuden Voima reached a historical 500-terawatt hour milestone in electricity production at 8:50 pm on 21 April.

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