 INES 2 |
Loss of shutdown cooling due to station blackout during refueling outage |
On February 9, 2012, during a refueling outage, loss of off-site power (LOOP) occurred and emergency diesel generator (EDG) 'B' failed to start while EDG 'A' was out of service for scheduled maintenance, resulting in a station blackout (SBO). Off-site power was restored 12 minutes after the SBO condition began.
The LOOP was caused by a human error during a protective relay test of the main generator. The EDG 'B' failing to start was caused by the failure of the EDG air start system.
China appears to be edging ahead in the international contest to build a new nuclear power station on Turkey’s Black Sea coast – a sign of how the ambitions of its nuclear companies are poised to reshape the global nuclear industry.
Beijing is not looking for government guarantees for the project and can supply its own financing, according to an Ankara official, pointing to China’s advantage in the race to build the reactor for Turkey.
SOFIA, March 28 (Reuters) - Bulgaria has abandoned plans to build the 2,000 megawatt Belene nuclear power plant on the Danube River and will construct a new gas power plant instead, Prime Minister Boiko Borisov said on Wednesday.
The Belene project has failed to attract serious foreign investors in the past three years after Germany's RWE pulled out in 2009 due to funding concerns.
INES 2 |
Failure of the reactor component cooling water system and others by tsunami |
Unit 2 of the Onagawa Nuclear Power Station started operation since 14:00 on March 11, and the Tohoku District – Off the Pacific Ocean Earthquake occurred at 14:46 on the same day. The reactor was automatically stopped and emergency diesel generator A (EDG (A)), emergency diesel generator B (EDG (B)), and high-pressure core-spray diesel generator (EDG (H)) automatically started.
The management of Bulgaria's NPP Kozloduy has required a certificate of quality of the metal, of which the two high pressure heaters recently installed at power units five and six are made. This has become clear from a statement of NPP Kozloduy CEO Alexander Nikolov. The two heaters cost 29 million euros.
The nuclear plant's management has sent letters to the manufacturer, OAO ZiO-Podolsk, and the supplier, Atomtoploproekt, in which they insist on being provided with extra information regarding the control on the parts' manufacturing.
Having spent five years combining its nuclear power, engineering and research enterprises into the single entity of Rosatom, the Russian government now sees privatisation of the firm as part of a plan for industrial modernisation.
Rosatom is just one of several vertically integrated state holding companies Russia established to "discourage the decline of the more intellectual sectors of national industry" in the post-Soviet era, wrote Vladimir Putin in the Vedomosti newspaper on 30 January.
INES 1 |
Leakage of Heavy Water from Feeder Pipe |
Plant was in shutdown state since October 05, 2011 because of maintenance activities. As per normal procedure during shutdown state, Standby Cooling System (SH) was in service to remove decay heat from the reactor core while Primary Heat Transport (PHT) system was in depressurized state. On October 19, 2011, inspection of channel S-11 grayloc seal was carried out to find out any foreign material in the orifice. During normalization of the system, Boiler Room (B/R) floor beetle alarm received in control room. Later, 'Tritium in Air High' alarm also annunciated.
FRANKFURT/DUESSELDORF, July 11 (Reuters) - Germany's cartel office said on Monday it would "closely" examine any investment by Gazprom in RWE after reports the weakened German utility was open to an investment by the Russian gas monopoly.
Essen-based RWE has been hit by loss-making gas contracts and weak power prices, and is also under threat from a German tax on nuclear fuel that came into effect this year.
European Union member state experts have agreed on a draft text for a new nuclear waste and spent fuel management directive that would allow permanent exports of waste from the EU under certain conditions.
INES 2 |
Over exposure of workers beyond annual regulatory limit |
Kakrapar Atomic Power Station (KAPS) is a twin unit station with 220 MWe Pressurized Heavy Water Reactors. Refueling of these reactors is done when the reactor is on-power. The spent fuel bundles discharged from the reactor are transferred to Spent Fuel Storage Bay (SFSB) through the Spent Fuel Transfer Duct (SFTD). The radiation field in the SFTD area goes high during transfer of spent fuel bundles through SFTD.
On May 30, 2011, Unit-2 of KAPS was operating at 98% FP. For carrying out painting job, SFTD shielding blocks were removed.
