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is3_76 - Radiological Emergency Management Independent...

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Radiological Emergency Management Independent Study Course 3-16 After TMI, the nuclear power plants have expanded their operator training programs. Plants have also modified their control room indicators, and have modified some plant equipment to prevent other accidents from occurring. Another serious commercial power reactor accident occurred at the Chernobyl nuclear power plant in the Soviet Union. At Chernobyl, on April 26,1986, a nuclear power plant accident released large amounts of radioactive fission products to the environment. The Chernobyl accident was caused by a combination of errors, deliberate failure to follow procedure and a poor design. The design of the Chernobyl reactor resulted in a very rapid increase in power after the water used to cool the core was lost. As a result, the pressure increased to the point that the reactor was blown apart. Such an accident is impossible at a U.S. PWR or BWR. In PWRs or BWRs, such a loss of water would have shut down the reactor. Thirty-one people, all of whom were onsite emergency response personnel, died as a result of the
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