A Brief Note On The Mile Island Is A Nuclear Generation Facility Essay

A Brief Note On The Mile Island Is A Nuclear Generation Facility Essay

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Introduction
Three Mile Island is a nuclear generation facility located on three miles in the Susquehanna River, South of Harrisburg, Pennsylvania in the Londonderry Township in the United State of America. The construction of this nuclear generating facility unit started on the 1968 and opened on September 2, 1974. The facility has two separate units, three mile Island One (TMI1) and the Three mile Island two (TMI2) and these together has an annual generating capacities of 6645 tones.
Accident
The TMI incident was a partial nuclear meltdown that occurred on March 28, 1979, in one of the units’ nuclear reactors. This incident was one of the worst incidents that happened in the United State, and in the history of commercial nuclear power plant. It was rated a five on the seven-point scale in the world. The accident on unit two happened at four the morning of 28 March 1979 when the reactor was operating at 97 percent power. It involved a relatively minor malfunction in the secondary cooling circuit which caused the temperature in the primary coolant to rise, causing the reactor to automatically shut down in about a second. The relief valve failed to close and the instrumentation did not reveal the fact causing the primary coolant to drain away, also the residual decay heat in the reactor core was not removed resulting in damage of the core.
The chain of events during the Three Mile Island Accident
The pilot-operated relief valve (PORV) on the reactor cooling system opened as it was supposed to within seconds of the shutdown. Ten seconds later it should have closed; nevertheless, it remained open, leaking vital reactor coolant water to the reactor coolant drain tank. Responding to the loss of cooling water, high-pressure injecti...


... middle of paper ...


...ctor in the history of nuclear power worldwide( 616 days and 23 hours) operation (“nuclear association,” n.d., para. 1). The TMI-2 accident led to the establishment of the Atlanta-based Institute of Nuclear Power Operations (INPO) and its National Academy for Nuclear Training. These two industry organizations have been effective in promoting excellence in the operation of nuclear plants and accrediting their training programs.
Conclusion
In conclusion, the root causes of the accident were found to be operator’s inability to diagnose or respond properly to the unplanned automatic shutdown of the reactor, deficient control room instrumentation and inadequate emergency response training. The lesson learned from this accident has helped in the improvement of operator training toward protecting a plants cooling capacity, regardless of what might be triggering the problem.

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