* South American nation expects to buy up to 83 cargoes * LNG imports estimated at 56 cargoes in 2012 BUENOS AIRES, Dec 6 (Reuters) - Argentina will buy as many as 83 cargoes of liquefied natural gas (LNG) in 2013, rising to a record on expectations for brisker economic growth, a source at state energy company Enarsa said on Thursday. The South American country originally planned to import 80 cargoes this year, but slower economic growth and increased supplies of piped natural gas from Bolivia reduced the original forecast to 56 cargoes. "At the moment, there are going to be 83, but this year we expected something similar. When there was less demand and more gas being sent from Bolivia ... we ended up asking for 30 percent less than we'd anticipated," the source said, asking not to be identified. The source said the date for tenders to be opened had not yet been set and that 35 of the planned cargoes would be handled by the Escobar import terminal and the remaining 48 by the Bahia Blanca regasification plant. Latin America's No. 3 economy, which has seen its energy bills spike in recent years due to surging demand and stagnant domestic production, is showing signs of recovering from a sharp slowdown earlier this year. The energy shortfall prompted President Cristina Fernandez to nationalize the country's largest energy company YPF earlier this year.