The Leak-Rupture Boundary (LRB) Calculator and Training Manual provide a tool that allows operators to determine the leak-rupture boundary for a pipe segment based on properties such as the diameter, toughness, and yield strength. Operators can use the calculator for risk modeling and consequence analysis. This tool includes a closed-form solution that allows the calculation of the LRB as a percentage of SMYS with a confidence that 97.5% of pipelines with the selected attributes of yield strength, toughness, diameter, and wall thickness would fail by leak instead of rupture. A user-friendly calculator was created to allow operators to perform analysis for specific pipe segments. This product contains the Final Report pdf, Training Manual pdf and the .CDF file to install the calculator after downloading the Wolfram CDF Player.