Sometimes other signs and symptoms precede sudden cardiac arrest. These may include fatigue, fainting, blackouts, dizziness, chest pain, shortness of breath, weakness, palpitations or vomiting. But sudden cardiac arrest often occurs with no warning.
In the core of nuclear reactors, the fission of uranium atoms releases energy that heats water to about 520 degrees Farenheit. This hot water is then used to spin turbines that are connected to generators, producing electricity.
Types of Reactors. Nuclear fission produces heat, and this heat is used to heat water and make steam. The steam powers turbines which turn generators. The generators produce electricity. Nuclear power generates electricity much like coal- or diesel-powered plants.