Visual literacy is a massive part of engineering. Educational resources often include exercises on reading Process Flow Diagrams (PFDs) and Piping and Instrumentation Diagrams (P&IDs). Students must learn the English nomenclature for symbols representing pumps, compressors, heat exchangers, and reactors. Understanding the language of labeling (e.g., "V-101" for Vessel 101) is crucial for reading these documents correctly.
Here is a curated list of where to find legitimate files.