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Three mile island accident

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  1. Introduction.
  2. The begining of the problem.
    1. Water in the main turbines.
    2. Two feed water pumps have fail.
    3. Faulty gages in the operating room.
    4. The water in the cooling loops.
  3. The lack of emergency procedures.
  4. The primary coolant water's radioactivity level.
  5. The situation as of 7:45 a.m.
  6. The situation by Friday.
  7. The reason for the formation of the bubble.
  8. Conclusion.

Three Mile Island Crisis started at four a.m. on March 28th, 1979. There was a clog in one of the pipes and the men working there had to clear it out, which was a regular occurrence. They shot air into the pipe in order to unclog it, which worked and then they went about their usual business at the power plant. What they didn't know was that when they cleared out the pipe a cup's worth of water had leaked out. This water was blown into the main turbines. This small amount of water caused the valves to automatically shut off because the water was interrupting the airflow into the valve. This is what started the Three Mile Island Crisis. Even though the valves had stopped, the plant was still running at ninety-seven percent, which is enough to light 300,000 homes. Then, two feed water pumps have failed in the secondary cooling system which meant that there wasn't any water circulating to remove heat from the unit so the temperature and the pressure rose dramatically.

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