Giulia Petroni is a journalism student at the Medill School of Journalism at Northwestern University.
The hypothesis of an "operation error" related to a ventilation valve, called 'Eco-19,' could explain the mystery of the tragedy that befell the ARA San Juan, the Argentine submarine that disappeared almost a year ago with 44-crew members on board.
The new details emerged in a report currently being prepared by a commission of experts based inside the Defence Ministry.
An error in the internal ventilation valve could have caused the entry of seawater into the submarine's batteries, leading to a short-circuit and the subsequent production of hydrogen, sources told the Perfil newspaper..
According to the report, the battery may not have been closed up properly or had some issues functioning, either "mechanical, human or incidental" in nature.
The report is being prepared by submarine experts commissioned by the Ministry, including Navy rear admirals (RE) Adolfo Trama and Alejandro Kenny, and captain (RE) Jorge Bergallo, who is the father of Jorge Ignacio Bergallo, the second commander of San Juan whose life was lost at sea.