The Red-Bag Project Calculation Validation software or short PCALC is a software application for the validation of piping component and pressure equipment calculations.

The PCALC application can be used to study the code calculations for different design conditions, materials of construction and component dimensions. The tool is used for engineering training as conducted at InIPED, the International Institute of Plant Engineering and Design.

The application has in addition to regular calculation reports an unconventional output: it can show a detail report how every formula is passed and what the input/output is. This is very useful when for example an iteration is done to get a solution. The validation of each calculation is a separate report with a summary and the detail in- and output.

The dimensions entered are shown in a dimensional sketch to scale. The sketch can be exported to DXF format for further use in a CAD application. The sketch has a tool to measure dimensions working with the calculations.

The PCALC application is made for Notified Bodies, Authority Approval Companies and code calculation development.