Mr. Calzetta holds a master´s degree in Physics from the National University of Buenos Aires (1978) and is a postgraduate in nuclear engineering from the same University (1981).
From May 2012 is responsible for the CAREM Project.
From 2008 to April 2012 was Planning and Evaluation Officer for the Brazilian-Argentine Agency for Accounting and Control of Nuclear Material (ABACC).
From 1986 to 2007 was the reactor manager of the RA-6 reactor in Bariloche, Argentina and also during this time was Professor of the Nuclear Engineer Career at the Balseiro Institute of the National University of Cuyo, Argentina.
Mr. Calzetta was also in charge of the start-up of the NUR reactor (Algerie) and of the start-up of the ETRR II reactor (Egypt). He acted as an advisor for INVAP SE during the start-up of the OPAL reactor (Australia).