What went wrong? 

The volcano had been warning the population of Armero that it was going to explode, unfortunately they could not do anything about it, if they had left the town temporarily, surely many people would have been saved, by the way the lava was going down with a velocity of 35km/h so in the case that they could leave from Armero just in the moment that the volcano exploded it would have been very difficult for them to get out of there safely. from our point of view, we believe that what condemned the people to this tragedy was the fact that other big cities had not helped them, because if it had been so many people would have been prepared for the catastrophe and if the government had provided the correct evacuation protocols, the people could have left before the destruction of Armero. 

A record of almost 20 thousand people dead and an incalculable amount of material losses make this the greatest natural tragedy so far in national history. Many of these lives could be saved according to a teacher “we told the population that, in case something happened, not to go to the main park, and it was very sad to see the images of people walking in that direction”. 
According to the professor, the gap between technical languages ​​and the population to which the message should reach is decisive when evaluating the reasons that explain the magnitude of the losses resulting from the avalanche. Humberto González assures that the message was not delivered in the best way, "it is not time to go in to judge, but I think the press did not give the event the importance it deserved or did not know how to adequately convey the message." 

 

Carlos Felipe Ayala Prieto 

Mateo Andrés Trujillo 

Alejandro Mondragón 

 

Weather conditions would have notified people about the tsunami, this had saved thousands of lives. If the reactors had been shut down in time, the nuclear coolant would have been able to cool without causing the explosion.   If there had set up some emergency power equipment and cooling pumps in bunkers, it would not have happened. 

Mariana Tellez
Katherin Avila 
Juan Pablo Mateus

Description: 

 

Fukushima nuclear disaster was a 2011 nuclear accident at the Fukushima Daiichi nuclear plant located in Japan, the proximate cause of this disaster was 2011 Tokohu earthquake and Tsunami, when they located the earthquake the active reactors of the nuclear power plant automatically shut down their normal process of the fission reactions. Cause of the electricity shutdowns and another electric problem the emergency of diesel generators started to function; these were required to provide electrical power to the pumps that circulated coolant through the reactors' cores. Also, the earthquake generates a tsunami of 14 meters high that arrived at the nuclear power plant causing some floods that damage the emergency generators, this caused the resulting loss of reactors of cooling machines, leading to made 3 nuclear meltdowns, explosion of excessive and the release of radioactive contamination 

  

What went wrong? 

If tsunami hadn’t dropped the bomb to Japan,  less people would have died.  

If Japan had had periodic safety reviews to assess and update the safety status of nuclear installations at 10-year intervals, the plant might have been saved along with many people. 

If Japanese industry had had moved emergency diesel generators and other emergency power sources to higher ground on the plant site, the radiation might have affected a lot less people. 

Mariana Tovar 
Gabriela Peralta 
Lina García

 

Uruguayan Air Force flight 571, also called Miracle of the Andes, flight of an ariplane charted by a Uruguayan amateur rugby team that crashed in the Andes mountains in Argentina on October 13, 1972. Of the 45 people on board only 16 survived the ordeal, it was revealed that the survivors commited cannibalism, thats why the accident gained international attention. 

What went wrong?

 

Miguel Melguizo
Danilo Urdaneta
Juan David Rodríguez

 

Description of the event: 

On 15 April 2019, just before 18:20 CEST, a fire broke out beneath the roof of Notre-Dame de Paris cathedral in Paris. By the time the structure fire was extinguished, the building's spire had collapsed and most of its roof had been destroyed and its upper walls were severely damaged. Extensive damage to the interior was prevented by its stone vaulted ceiling, which largely contained the burning roof as it collapsed. Many works of art and religious relics were moved to safety early in the emergency, but others suffered smoke damage, and some of the exterior art was damaged or destroyed. The cathedral's altar, two pipe organs, and three 13th-century rose windows suffered little or no damage. Three emergency workers were injured. The fire resulted in the contamination of the site and nearby areas of the city with toxic dust and lead. 
 

What went wrong? 

According to this case, many people say that if there had been more security at the time of entering the church, there would not have been so many possibilities of it burning. At the same time, if they had checked the condition of the facilities frequently, the fire would not have happened.
Finally, badly extinguished cigarette, a short circuit in the elevator leading to the needle, or a short circuit in the wires to operate the bells, If the person had put out the cigarette well, the accident would never have happened. 


Mateo Benavides
Santiago A. Diaz
Lesly K. Gutierrez