Atucha Nuclear Power Plant


The Atucha Nuclear Complex, or Atucha Nuclear Power Plant, is the location for two adjacent nuclear power plants in Lima, Zárate, Buenos Aires Province, about from Buenos Aires, on the right-hand shore of the Paraná de las Palmas River. Both are pressurized heavy-water reactors employing a mixture of natural uranium and enriched uranium, and use heavy water for cooling and neutron moderation.

Atucha I

Atucha I was started in 1968 and began operation in 1974; it was the first nuclear power plant in Latin America. On 25 March 1973, before its completion, the plant was temporarily captured by the People's Revolutionary Army who stole a FMK-3 submachine gun and three.45 caliber handguns. When they retired they had a confrontation with the police, injuring two police officers.
It has a thermal power of 1,179 MWth, and generates 357 MWe of electricity, which is delivered at 220 kilovolts to the Argentine Interconnection System, supplying about 2.5% of the total electricity production.

Atucha II

Atucha II construction started in June 1981 under a contract with Siemens. It was planned to have a much higher power than Atucha I. At the time when it was started, it had the largest reactor pressure vessel of any nuclear power plant worldwide. The total cost as of 2006 was estimated at US$3.8 billion, or about $5500/kWe.
Partly as a response to the energy shortage caused by natural gas crisis of 2004, the issue of Atucha II was taken up by the Argentine government. In 2005 President Néstor Kirchner signed a decree to reactivate the construction and pledged to finish it by 2009. New technicians were hired and a budget of about $120 million was requested for 2006. Eduardo Messi, president of Nucleoeléctrica Argentina S.A., told reporters that 93% of the components were either in storage or already installed.
On 23 August 2006 the government announced the re-activation of the national nuclear programme, and updated its promise to finish Atucha II by 2010, devoting a total of 1,850 million pesos. The plant was slated to come online with an installed capacity of about 750 MW.
Atucha II was "pre-started" on September 28, 2011 by President Cristina Fernández de Kirchner and it was scheduled to start commercial service by mid-2013.
On June 3, 2014 reached its first criticality, and on June 27, 2014 began to produce energy.
On 19 February 2015, the plant reached 100% power production for the first time, increasing the percentage of nuclear power in Argentina's energy mix from 7% to 10%.