Management Oversight Risk Tree trees

NRI. 2002. MORT user s manual. For use with the management Oversight Risk Tree analytical logic diagram, NRI, 2002. 

Management oversight risk tree (MORT) A formal, disciplined logic or decision tree to relate and integrate a wide variety of safety concepts systematically. As an accident analysis technique, it focuses on three main con-... 

Johnson, W. G. (1973). MORT, the Management Oversight Risk Tree, U.S. Atomic Energy Commission, Washington, DC. 

Johnson, W.G. (1975), Management Oversight Risk Tree (MORT) , Journal of Safety Research, 7(1), 4-15. 

MORT Management Oversight and Risk Tree analysis lohnson, 197.1... 

FIGURE 6.6. Management Oversight and Risk Tree (lohnson, 1980). 

A last reference here is the Guide to Use of the Management Oversight and Risk Tree (MORT). In the abstract for that publication, MORT is described as a comprehensive analytical procedure that provides a disciplined method for determining the systemic causes and contributing factors of accidents. This reference to performance errors is of particular interest. 

Guide to Use of the Management Oversight and Risk Tree (SSDC-I03). Washington DC U.S. Department of Energy, November 1994. 

These are but a few of them single event theory chain of events theory epidemiological models systems theory models multilinear events sequencing human factors models life change unit theory motivation-reward satisfaction models and the management oversight and risk tree model. 

The definition of an accident contained in the original literature on MORT management oversight and risk tree) indicated that an injury was preceded by sequences of planning and operational errors which (a) failed to... 

Most causation models have minimized less than adequate design and engineering concepts and outcomes as a source of causal factors for hazards-related incidents, with one significant exception. That exception is MORT—the management oversight and risk tree. Concepts on which MORT is based have influenced my thinking greatly, and I am indebted to all who worked on the creation and betterment of MORT. 

In this supporting discussion, the influence of system safety concepts will be evident, as will the concepts on which MORT (management oversight and risk tree) is based. 

This causation model puts a major focus on less than adequate management practices that impact on the operations system as a source from which causal factors derive. A borrowing of significance is taken from the Guidelines to Use of the Management Oversight and Risk Tree to emphasize focusing on the system ... 

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