MORT management oversight and

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

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... 

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. 

The heart of the book is its presentation of Sequentially Timed Events Plotting (STEP). The accident investigation methodology presented relies on a new conceptual framework, building on system safety technology and the safety assurance systems of MORT (management oversight and risk tree). 

And it is appropriate to recognize that system safety concepts were foundational in the development of MORT (management oversight and risk tree). References to system concepts are frequent in Johnson s MORT Safety Assurance Systems and in other literature on MORT. 

The contract may require a wide range or types of system safety analyses to be performed for a variety of reasons during the life of the contract. For example, any time new equipment or hardware is introduced into the work environment, a series of system safety analyses should be performed. Likewise, when existing equipment is modified to the extent that critical functions of the equipment may be affected, a series of analyses should be conducted prior to the first operational use of the modified equipment. In addition, prudent system safety protocol will dictate that certain analyses be conducted under certain circumstances. For example, an accident investigation may utilize fault tree analysis, or the system safety technique known as MORT (Management Oversight and Risk Tree) to determine the exact cause(s) that lead to an accident/incident/mishap. 

CDM Construction (Design and Management) MORT Management oversight and risk tree... 

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. 

But, there has been a significant and appropriate change in the MORT literature concerning the identification of causal factors. In a November 1994 publication titled Guideline to Use of the Management Oversight and Risk Tree, this appears under Performance Errors ... 

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. 

Guide to Use of the Management Oversight and Risk Tree, SDDC-103. Idaho Falls, ID U.S. Department of Energy, Office of Safety and Quality, 1994. Johnson, William G. MORT Safety Assurance Systems. New York Marcel Dekker, 1980. 

Guide to Use of The Management Oversight and Risk Tree (MORT), a Department of Energy publication. 

In 1973 a revised management oversight and risk tree (MORT) manual was published by the AEC. Even though Johnson borrowed heavily from existing DOD and NASA programs, his MORT program bore little resemblance to programs based on MIL-STD-882 (Johnson 1973). 

AEC publishes MORT— The Management Oversight and Risk TVee (1973)... 

Another major approach tends to be very different from other efforts described. The Department of Energy s approach is based on the management oversight and risk tree (MORT), a comprehensive, state-of-the-art program for safety management and system safety. 

The management oversight and risk tree (MORT) chart is a large, complex, negative tree (see Chapter 18). Even though the project evaluation tree (PET) is depicted as a positive tree, it is mentally converted and used as a fault tree for accident analysis applications (see Chapter 16). 

Johnson, William G. 1973. MORT, the Management Oversight and Risk Tree. Washington, DC U.S. Atomic Energy Commission. 

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