Loviisa

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Finland should approve all three nuclear power stations -Ex-PM

Wednesday, October 15, 2008

The former Finnish prime minister Paavo Lipponen (soc dem) said at an energy seminar Thursday that Finland should greenlight all three nuclear power stations planned by utilities in order to bolster the country's energy security.

He added Finland should simultaneously boost spending on energy research and development and investments.

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Russian Company Retains Contract to Supply Nuclear Fuel to Slovakia

Wednesday, July 16, 2008

Bratislava, 16 July: Russian open joint-stock company TVEL has maintained its position in Slovakia, having won the tender for the supply of nuclear fuel for five power-generating units of the local Mochovce and Bohunice nuclear power plants until 2015, management company Slovenskie Elektrarne has reported.

These plants were built to Russian design and equipped with VVER-440 reactors.

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Minor fault shuts down generator at Finnish nuclear power plant

Thursday, September 13, 2007

HELSINKI, Finland: Plant officials shut down a nuclear reactor in southern Finland Thursday, after a faulty turbine caused a generator to lose power, but no radiation leak or other damage was reported, officials said.

The 250-megawatt generator, at the Loviisa plant, 90 kilometers (55 miles) east of Helsinki, was shut down but the other 250-megwatt unit was running normally, operations manager Markku Tiitinen said.

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INES-event
INES 1

Water leakages at Loviisa-1 NPP unit from the fuel loading pool on 17 and 18 August 2000 during the annual maintenance outage

At the Loviisa nuclear power plant unit 1 on the 17.8.2000 there was a water leakage from the fuel loading pool during the annual maintenance outage in connection to a test run of the fuel pool cooling system. Low activity water leaked from the pool into a room outside the containment due to a manual valve incorrectly set open. The volume of the leaked water was 20 m3. The leakage caused temporary doserate of 0.1 mSv/h outside the room door. There was no liquid or air release from the plant. Access to the contaminated area was restricted and the cleaning procedure was started.

Category: Power Reactor Finland Loviisa »

INES-event
INES 2

FEEDWATER PIPE RUPTURE

At Loviisa NPP unit 2, a feedwater pipe rupture occurred on 25 February 1993. The plant is now under control and there were no releases of radioactive material off-site. The rupture occurred during starting up of a feedwater pump. After the pipe rupture, the leakage was rapidly isolated and the operating feedwater pumps stopped. The water levels of the steam generators were controlled by the auxiliary feedwater pumps which started automatically.
The pipe rupture occurred at the turbine hall. A few cubic meters of non-radioactive water flowed on the floor of the turbine hall.

Category: Power Reactor Finland Loviisa »

INES-event
INES 1

FUEL BUNDLE LATTICE SPACING FAILURES

The Loviisa fuel bundles have ten spacing latices. The on-site examinations of spent fuel have revealed deformation and relocation of the uppermost lattice. The extent and the consequences of this failure mode are being evaluated.
BASIS FOR RATING: Safety function availability: full. Real initiator: fuel bundle spacinglattice failure. Initiator frequency: Possible. Table A2 gives 1.
DIFFICULTIES IN RATING:

Category: Power Reactor Finland Loviisa »

INES-event
INES 1

FEEDWATER TUBE RUPTURE DUE TO EROSION CORROSION

One pipe of the feedwater system of Loviisa 1 broke. The ruptured tube was situated in the turbine hall of the unit. Water and steam flew into the turbine hall. The operation of the Unit was stopped by a manual reactor scram immediately after trip of all feedwater pumps. Both auxiliary feedwater pumps started as planned and the transient in the steam generator level was small. The leak was isolated in about twenty minutes. The local damages to nearby cables and smaller pipelines were significant but no important functions were lost besides the main feedwater system.

Category: Power Reactor Finland Loviisa »