40º aniversario de Three Mile Island infographic
El gráfico muestra lo sucedido en la Planta de Energía Nuclear de Three Mile Island el 28 de marzo de 1979.
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EUA

Conmemoración del accidente de Three Mile Island

March 28, 2019 - El 28 de marzo de 1979, una fusión parcial de un reactor nuclear en una estación de energía en Pensilvania causó una fuga de radiación que sigue siendo hasta ahora el incidente nuclear más grave en EUA.

The Three Mile Island accident was the partial meltdown of reactor number 2 of Three Mile Island Nuclear Generating Station in Dauphin County, Pennsylvania and subsequent radiation leak that occurred on March 28, 1979. It was the most significant accident in U.S. nuclear power plant history and rates a five on the seven-point International Nuclear Event Scale: Accident with wider consequences.

It began with failures in the non-nuclear secondary system, followed by a stuck-open pilot-operated relief valve in the primary system, which allowed large amounts of nuclear reactor coolant to escape. The mechanical failures were compounded by the failure of plant operators to recognise the situation as a loss-of-coolant accident due to inadequate training and human factors, such as ambiguous control room indicators in the power plant’s user interface.

The accident crystallised anti-nuclear safety concerns among activists and the general public, and resulted in new regulations for the nuclear industry.

People expressed worries about regional health effects from the accident, but studies of the rate of cancer in and around the area since the accident determined there was a statistically non-significant increase in the rate and thus no causal connection linking the accident with these cancers has been substantiated.

The bill for making the site safe was $1 billion, and took from 1979 to 1993.

The plant is due to close in September 2019, but cannot be decommissioned until 2040, when radiation levels have fallen sufficiently.

PUBLISHED: 18/03/2019; STORY: Graphic News; PICTURES: Apple Maps
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