Essay On Risk Chain Analysis

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Throughout the last 30 years, the management of risks linked with the operation of major accident hazard facilities has been soaring high on the corporate agenda. This has been driven by an amount of major accidents including Flixborough (1974), Bhopal (1984), Piper-Alpha (1988) and, more recently, Enschede (2000), Toulouse (2001), Fluxys (2004) and Texas City (2005). The root causes and impacts of other acute and serious accidents at large civilian nuclear power plants are examined and assessed, for example the Three Mile Island accident in 1979, the Chernobyl accident in 1986, and the Fukushima Daiichi accident in 2011. Impacts comprise health effects, evacuation of contaminated areas as well as cost estimates and impacts on energy policies and nuclear safety work in different and diverse countries.
It is deduced that essential objectives for reactor safety work must be to avert accidents from developing into severe core damage, even if they are commenced by very unlikely natural or man-made events, and, identifying accidents with severe core damage may notwithstanding occur, to avert large-scale and long-lived ground contamination by restricting releases of radioactive nuclides such as cesium to less than about 100 TBq. To accomplish these
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The aim of the analysis is to identify consequence chains developing from failures or other unwanted events, and to roughly estimate these consequences with their probabilities. Cause-consequence analysis comprises the following phases, firstly is recognizing damage chains, recognizing the primary event, recognizing the follow-up events,final consequence damages, defining causes of primary and follow-up events to cause or fault trees and inserting realization probabilities for the causes of primary and follow-up

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