1982 and 1992, operations in Angra were halted 16 times for different reasons. The inefficiency of the plant led to a widespread feeling that the nuclear deal with Westinghouse had been a poor decision. Due to the constant interruptions, the power plant of Angra 1 became known in Brazil as the vagalume, or "firefly". Amid the unfolding political transition post-dictatorship, a new Constitution was drafted in 1987–1988, for which Brazil's nuclear development program became a focal point of debate. The article approved by the Constitutional Assembly declared: "All nuclear activity within the national territory shall only be admitted for peaceful purposes and subject to the approval of the National Congress." While current official discourse often presents this decree as a unilateral guarantee that Brazil will never build nuclear artifacts, at the time of the new Constitution Brazil was still arguing for the legality of peaceful nuclear explosions—and oral history evidence points to the notion that those drafting the constitution sought to incorporate language consistent with such technologies. Brazil would only renounce nuclear explosions in 1990, two years after the Constitution was passed. President Fernando Collor de Mello, the first to be elected by popular vote since 1964 and the first ever to be elected after universal suffrage was enacted, officially renounced pacific nuclear explosions and held a public ceremony to seal shut the shafts located at the Air Force base in Serra do Cachimbo, Pará, in September 1990. That same year, a CPI was established to investigate the military's autonomous nuclear program. Among the main findings were details of illicit trade of nuclear material, as well as information about illegal financial operations that had served to keep the secret program going. In its final report, the inquiry commission recommended that the parallel program be dismantled with some of its activities to be integrated into the safeguarded civilian program. It also recommended the establishment of accountability mechanisms to increase the safety and security of the program. The economic crisis that had already affected the development of Brazilian nuclear project in the 1980s continued through the 1990s. Nuclear activities slowed down, the program for developing the nuclear submarine ground to a halt and plans to build two additional nuclear power plants were put on hold. Only in 1994 did the Brazilian government decide to resume construction of Angra 2. 2001–present In 2001 more than two decades after the beginning its construction, the