Where is 3 mile island happened

Here's a look at what we will be doing. A security force will safeguard the facility until all nuclear fuel has been removed from the site. A highly qualified, skilled staff of experts will oversee and conduct the entire dismantlement process. Using company employees and contracted experts, Exelon will continue a strong environmental monitoring program through decommissioning.

Teams of qualified employees, both on and off-site, will be on-call all day, every day to work to protect the plant and the public in an unlikely emergency situation. Turn on more accessible mode. Turn off more accessible mode. Skip to main content.

Page Image. Page Content. Three Mile Island Generating Station Unit 1 TMI Unit 1 permanently shut down on September 20, , leaving a year legacy of safe, reliable, carbon-free electricity generation and service to the community.

The temperature began to drop, and pressure in the reactor was reduced. The reactor had come within less than an hour of a complete meltdown. More than half the core was destroyed or molten, but it had not broken its protective shell, and no radiation was escaping. The crisis was apparently over. Two days later, however, on March 30, a bubble of highly flammable hydrogen gas was discovered within the reactor building. The bubble of gas was created two days before when exposed core materials reacted with super-heated steam.

On March 28, some of this gas had exploded, releasing a small amount of radiation into the atmosphere. At that time, plant operators had not registered the explosion, which sounded like a ventilation door closing. After the radiation leak was discovered on March 30, residents were advised to stay indoors.

Carter, a trained nuclear engineer, had helped dismantle a damaged Canadian nuclear reactor while serving in the U. His visit achieved its aim of calming local residents and the nation. That afternoon, experts agreed that the hydrogen bubble was not in danger of exploding.

Slowly, the hydrogen was bled from the system as the reactor cooled. At the height of the crisis, plant workers were exposed to unhealthy levels of radiation, but no one outside Three Mile Island had their health adversely affected by the accident.

The unharmed Unit-1 reactor at Three Mile Island, which was shut down during the crisis, did not resume operation until Cleanup continued on Unit-2 until , but it was too damaged to be rendered usable again. But if you see something that doesn't look right, click here to contact us!

Dwight D. The crisis at TMI threatens to turn into a full-scale disaster. But, a visit from President Jimmy Carter and some good fortune appear to turn the tide. March 28, AM. Support for WITF is provided by:. Terms of Use Privacy Policy.