Predefined trees MORT

Application of the MORT technique is based on a predefined tree structure laid out vertically (top down) in eight interconnecting trees. The structure is quite complex, but contains 98 generic problem areas and up to 1500 possible causes. A user s manual 02) provides detailed instructions on how to use the tree. 

The MORT technique has received domestic and international recognition, and has been applied to a wide range of projects from investigation of occupational incidents to hazards identification. It is supported by detailed documentation, and has been subjected to continued development efforts since it was originally introduced. Today there are several predefined trees available from public and proprietary sources that are based, at least in part, upon tbe MORT tool. 

Varieties of public and proprietary predefined trees are available for use, although most owe some allegiance to MORT. The comprehensiveness of the different trees varies from some that may not fully reach root causes, to others that are very detailed with numerous categories and sub-categories. Several of these trees are listed in the appendix and examples of TapRooT SOURCE /Root Cause Map and Comprehensive List of Causes (CLC) < 4) are included on the CD-ROM. 

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