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Three Mile Island

Nuclear Hazard

three mile island

on 20 December 2012

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Transcript of Three Mile Island

Three Mile Island Jacob St. Jean & Luke Rosinski Three mile island facts!!! Three mile island is only 2 1/2 miles long
The most serious nuclear reactor accident to date in the United States occurred at 4 a.m. on March 28, 1979.
No one died in three mile accident.
The Nuclear Generating station is located on 814 acres on an island in the Susquehanna River some 10 miles southeast of Harrisburg, Pennsylvania. Are Nuclear Reactors Fail-Safe
What do you think? We think Nuclear Reactors are not fail-safe and we think this because of all the Nuclear disasters that have happened over the years. The many nuclear accidents that have happened is because of people not being focused and because of electrical malfunctions. We think that Nuclear Reactors will never be 100% safe because there are to many possibility's that something could go wrong. A misreading by one of the engineers on duty compounded with a series of equipment and instrument malfunctions led to a dangerous loss of water coolant from the reactor core. As a result, the reactor core was partially exposed, which led to some radioactive gases escaping into the containment section of the reactor building. Though some of this radiation was released into the surrounding area. "Interesting Facts And Articles." : Meltdown at Three Mile Island Nuclear Generating Station. N.p., n.d. Web. 19 Dec. 2012. Non-Human Error
Electrical Malfunction During routine maintenance an automatically operated valve in the Unit 2 reactor closed when it should not have. Most likely due to either a mechanical or electrical failure. This shut off the water supply to the system that cools down the reactor core and prevented the steam generators from removing heat. The Human Error
A Misreading
http://edu.glogster.com/media/4/32/75/7/32750751.jpg http://www.citydictionary.com/Uploaded/Images/Three-Mile-Island-20080428102620.jpg Three Mile Island Pictures Bibliography In 1979 at Three Mile Island nuclear power plant in USA a cooling malfunction caused part of the core to melt in the # 2 reactor. The TMI-2 reactor was destroyed. Safety Systems
Why didn't they work? http://www.nrc.gov/reading-rm/doc-collections/fact-sheets/tmi-2.gif "Three Mile Island Accident." Three Mile Island. N.p., n.d. Web. 19 Dec. 2012. When the reactor was operating at 97% power. It involved a relatively minor malfunction in the secondary cooling circuit which caused the temperature in the primary coolant to rise. This in turn caused the reactor to shut down automatically. The shut down took about one second. At this point a relief valve failed to close.
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