TapRooT® is a patented, scientifically vetted root cause analysis (RCA) methodology. Unlike subjective brainstorming techniques like the "5 Whys," TapRooT® combines a strict timeline process with built-in human factors checklist technology. This ensures that investigations remain objective, repeatable, and deeply focused on systemic issues rather than individual blame. The system relies on a specific workflow:
Using the dictionary requires strict adherence to evidence rather than assumptions. Investigators follow a simple three-step cycle for every potential root cause. Step 1: Locate the Category on the Tree
: Pinpoint the specific mistakes or failures that, if corrected, would have prevented the incident.
: By identifying the correct root cause, you can use the Corrective Action Helper® to develop fixes that actually work, rather than just "retraining" the staff. Example Application of TapRooT® - Flight Safety Foundation
A frequently cited source where a version of the "TapRooT : root cause tree dictionary" has been uploaded for public view and, in some cases, borrow/download. taproot root cause tree dictionary pdf free
Many safety professionals search for terms like "taproot root cause tree dictionary pdf free" hoping to quickly download these reference manuals. However, it is vital to understand the licensing and copyright structure of these materials. Copyright and Intellectual Property
The dictionary contains precise definitions, specific examples, and explicit cross-referencing questions for every single terminal node (root cause) on the tree. When navigating the tree, an investigator must consult the dictionary. If the evidence collected during the investigation does not perfectly match the dictionary’s criteria for a specific root cause, that path is discarded. This methodology ensures that two independent investigators examining the same evidence will arrive at the exact same root causes. How to Use the Tree and Dictionary Together
Because over 80% of industrial incidents involve human error, the TapRooT® tree places a heavy emphasis on Human Performance. It breaks human errors down into seven :
: The investigator might blame "complacency" and recommend the operator "be more careful." This does not fix the system. TapRooT® is a patented, scientifically vetted root cause
The is a fundamental component of the TapRooT® System, a structured methodology designed to help investigators identify the true root causes of human performance and equipment reliability issues.
Human Factors Engineering: Seeing if the workspace or tool design led to a mistake.
The TapRoot system, including the Root Cause Tree and its Dictionary, is copyrighted intellectual property owned by System Improvements, Inc. (now often associated with Sologic or other RCA entities after various acquisitions and rebrandings). A full, official, current PDF of the dictionary is not legally available for free from the publisher, as it is part of their paid training and software suite.
Evaluates the design of displays, controls, tools, and the physical work environment. The system relies on a specific workflow: Using
Shifts the focus from "Who messed up?" to "Why did the system fail them?"
Navigate the tree to: "Equipment Failure" -> "Design" -> "Inadequate Specification for Duty Cycle."
Is the label placed in a location hidden by other equipment?
The tree is divided into major branches that cover the vast majority of industrial and operational failures:
