Incident analysis physical damage

Cause-consequence analysis serx es to characterize tlie physical effects resulting from a specific incident and the impact of these physical effects on people, the environment, and property. Some consequence models or equations used to estimate tlie potential for damage or injury are as follows Source Models, Dispersion Models, Fire Explosion Models, and Effect Models. Likelihood estimation (frequency estimation), cliaractcrizcs the probability of occurrence for each potential incident considered in tlie analysis. The major tools used for likelihood estimation are as follows Historical Data, Failure sequence modeling techniques, and Expert Judgment. 

Property damages and legal liabilities are not the only sources of financial impacts a company may suffer at the time of an incident. Business interruption losses will also occur since the facility will not longer be able to function as intended. Analysis of insurance industry claims data shows that business interruption losses are generally three times the amount of physical property damage. Often the justification for a safety feature may not be the loss of the component itself but of the impact to operations and loss revenue it produces. 

Finding all earthquake-induced failure patterns of a slope is an important base for the probability analysis of any special earthquake-induced damage pattern of the slope. The earthquake-induced failure of a slope is relevant to the seismic loading direction and the dynamic response of the slope. At present, little research has been completed concerning this aspect. The research of Zhao (2012) and Liu (2012) indicates that the dynamic failure of loess slope is nearly irrelevant to the vibrating directions of vertically incident seismic waves. Recently, the research on slope model with uniform and isotropic layers has verified the physical essence and inevitability of such phenomenon (J.Z. Sun, S.Y. Dong, G. Li, et al., 2013). However, the question whether the changes in incident direction of seismic wave would lead to different seismic response of identical slope still needs to be answered. 

This paper presents a sununaiy of evaluations made by the Babcock Wilcox Company (B W) in support of its customers. General Public Utilities. (GPU), to assess the potential for reciiticality of the damaged Three Mile Island Unit 2 Reactor (TMI-2) core and to provide a basis for recommendations to prevent die occurrence, of such an event. The TMI-2 incident occurred on March 28, 1979 on March 31, B W formed a Criticality Analysis Task Force composed of penoniiel from the Company s reactor physics unit and their nuclear criticality safety unit. The Task Force at maximum strength utiliaed ten individuals and completed all pertinent evaluations in two weeks advisory activity continued for several months. 

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